Ocean Current and Wave Measurements at the
Georgetown Ocean Dredged Material Disposal
Sites
October 2007 through September 2008
1ft
0 1 2 3km
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EPA-904-R-10-002
March 2010
Ocean Current and Wave Measurements
at the
Georgetown Ocean Dredged Material Disposal Sites
October 2007 through September 2008
By:
Christopher J. McArthur, P.E.
Wetlands & Marine Regulatory Section
Water Protection Division
with the assistance of:
Ecological Evaluation Section
Science and Ecosystem Support Division
and funding from:
U.S. Army Corps of Engineers
Charleston District
Under Interagency Agreement #RW-96-94605201
MIPR #SAC-0706/MIPRW81D
U.S. Environmental Protection Agency Region 4
Atlanta, Georgia
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Table of Contents
1.0 Introduction 1
2.0 Methods 2
2.1 Study Area 2
2.2 Deployment Periods 3
2.3 Instrumentation 2
2.4 Data Analysis 5
2.4.1 Wave Data 5
2.4.2 Current Data 5
3.0 Results
3.1 Waves 6
3.3 Currents 6
4.0 Summary and Conclusions 8
5.0 Acknowledgements 9
6.0 References 10
Tables
Table 1 Instrument Deployment Locations 2
Table 2 Deployment periods 3
Table3 ADCP Settings 4
Table 4 Principal Tidal Constituents at the Georgetown ODMDS 7
Table 5 Summary of Harmonic Analysis of Water Depth at the Georgetown ODMDS.... 7
Table 6 Summary of Harmonic Analysis of Currents at the Georgetown ODMDS 8
Table 7 Recommended STFATE ambient velocity parameters
for the Georgetown ODMDS 9
Appendices
Appendix A
Appendix B
Appendix C
Figures
Data Files
Complete Tidal Analysis Output from T_TIDE
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Ocean Current and Wave Measurements at the
Georgetown Ocean Dredged Material Disposal Site
1.0 INTRODUCTION
It is the responsibility of the U.S. Environmental Protection Agency (EPA) and the U.S. Army
Corps of Engineers (USAGE) under the Marine Protection, Research, and Sanctuaries Act
(MPRSA) of 1972 to manage and monitor each of the Ocean Dredged Material Disposal Sites
(ODMDSs) designated by the EPA pursuant to Section 102 of MPRSA. Additionally, the
Memorandum of Understanding (MOU) between EPA Region 4 and the USAGE South Atlantic
Division specifies that it is in the best interest of the EPA and the USAGE to act in partnership
concerning the management and monitoring of all ODMDSs.
The Georgetown Harbor Ocean Dredged Material Disposal Site (ODMDS) was designated by
the U.S. Environmental Protection Agency (EPA) in 1988 for the disposal of dredged material
from the greater Georgetown, South Carolina area. Since that time approximately 4.6 million
cubic yards of dredged material has been disposed at the ODMDS. As a result of disposal,
significant shoaling within the ODMDS has occurred decreasing depths within the eastern half
of the ODMDS from 36 feet prior to designation to 25 feet presently. Further shoaling of the
ODMDS could result in a navigation hazard and would present operation problems for vessels
attempting to disposal of dredged material from the Georgetown Harbor federal project.
Consequently, in 2001, the USAGE Charleston District (SAC) requested that EPA consider
enlarging the ODMDS. Consistent with EPA's Statement of Policy for Voluntary Preparation of
National Environmental Policy Act (NEPA) Documents (See 63 FR 58045 [October 29, 1998],
"Notice of Policy and Procedures for Voluntary Preparation of NEPA Documents"), EPA
determined that an Environmental Assessment (EA) would be the appropriate mechanism for
modifying the site designation. Consistent with a Memorandum of Understanding (MOU)
between EPA Region 4 and the US ACE South Atlantic Division (SAD) it is the US ACE's
responsibility to provide EPA with the information necessary to develop the appropriate NEPA
documentation. SAC in consultation with EPA Region 4 developed a study plan for collecting
the information necessary for the EA including: single beam bathymetry, side-scan sonar and
magnetometer surveys of a 4 nmi by 4 nmi study area; benthic and water quality sampling; and
current and wave measurements. EPA Region 4, through funding from the USAGE, has
developed the capability to conduct wave and current measurements at ocean dredged material
disposal sites. Therefore, SAC requested that EPA Region 4 conduct a one year study of the
currents and waves in the vicinity of the Georgetown Harbor ODMDS in support of site
designation modification.
In September 2007, EPA Region 4 and the SAC entered into an agreement to collect one year of
current and wave data at the Georgetown ODMDS. This report details the results of that study.
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2.0 METHODS
2.1 Study Area
The study area consists of an area approximately 11 kilometers (6 nautical miles) offshore the
entrance to Winyah Bay, South Carolina. A location approximately one kilometers (0.5 nautical
miles) east of the existing Georgetown ODMDS was selected for the main instrument
deployment. Two additional instrument deployment locations were established for short term
current measurements. One was located 1.8 kilometers (1 nautical mile) east and the other 2.2
kilometers (1.2 nautical miles) southeast of the existing Georgetown ODMDS. The coordinates
and water depths of the instrument deployment locations are provided in table 1 and shown in
figure 1.
Table 1: Instrument Deployment Locations
Deployment Location
Site A (600kHz ADCP with Wave
Package)
Site B (600kHz ADCP)
Site C (1200kHz ADCP)
Latitude
(dd mm. mm)
33ฐ 11.132'
33ฐ 09.903'
33ฐ 10.739'
Longitude
(dd mm. mm)
79ฐ 04.781'
79ฐ 04.757'
79ฐ 03. 972'
Water Depth
(m)
12.8
12.8
12.2
2.2 Deployment Periods
A diver deployable fiberglass base manufactured by Ocean Science was utilized for the main
instrument deployment (figure 2). The two additional instrument deployments utilized stainless
steel bases designed by EPA Region 4 (figure 3). The main instrument package, which included
wave measurements, required four deployments each of 3 to 4 months beginning on October 23,
2007. The deployment periods are shown in Table 2.
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Table 2: ADCP Deployment Periods
First Ensemble Date-Time (UTC) | Last Ensemble Date-Time (UTC) \ Duration (days)
Site A
10/23/07-20:45 j 01/29/08 - 17:45 ' 97.875
01/29/08-20:15 I 04/29/08-18:45 I 90.938
04/29/08-20:15
06/19/08-02:451
50.271
08/05/08 - 20:45 j 09/14/08 - 08:452 j 39.500
SiteB
04/30/08-18:30 j 08/05/08 - 12:30 j 96.75
SiteC
04/30/08 - 20:00 j 07/26/08-08:15 | 86.510
Deployment 3 ended prematurely due to unexplained instrument failure. Wave data ended on June 19 at 02:00 hr.
Current data was available until August 26, 2008 with 48 missing ensembles. The instrument recovery date was
August 5, 2008.
Deployment 4 ended prematurely due to an unexplained loss of battery power. The instrument recovery date was
October 29, 2008.
2.3 Instrumentation
600 kHz Acoustic Doppler Current Profilers (ADCP) manufactured by RD Instruments were
used to measure wave parameters and currents at the Georgetown Harbor ODMDS Site A and
currents only at Site B. A 1200 kHz ADCP was used to measure currents at Site C.
ADCPs work by transmitting sound along four separate beams at a fixed frequency and listening
to the echoes returned by sound scatterers, such as plankton or small particles, in the water. By
calculating the Doppler shift and time of travel of the echoes, the ADCP can calculate velocities
for various depths in the water. The calculations performed by the instrument split the water
column into equally sized depth cells or bins (in this case the bin size was set at 0.5 m). In each
bin, an average velocity vector is calculated. The raw data from the instrument is reported as a
velocity magnitude and direction for each bin.
To calculate wave parameters, the wave orbital velocities below the surface are measured by the
ADCP. To get a surface height spectrum the velocity spectrum is translated to surface
displacement using linear wave kinematics. The ADCP can also measure wave height spectra
from its pressure sensor and from echo ranging the surface. For directional spectrum, each depth
cell of the ADCP can be considered to be an independent sensor that makes a measurement of
one component of the wave field velocity. The ensemble of depth cells along the four beams
constitutes an array of sensors from which magnitude and directional information about the wave
field can be determined. (Strong, 2000)
In this study the velocity or current profile was sampled every 15 minutes and waves every hour
-3-
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using the ADCPs. Instrument settings are summarized in table 3.
Table 3: ADCP Settings
ADCP Setup
Number of Bins
Bin Size (m)
Pings per Ensemble- Currents
Standard Deviation (cm/s)
Interval - Currents (h:m:s)
Burst Duration - Waves
(minutes)
Burst Interval - Waves (h:m:s)
Salinity (ppt)
Magnetic Variation (degrees)
Temperature (C)
First Bin Range (m)
Last Bin Range (m)
Battery Usage (Wh) /
Maximum Deployment
Duration (days)
Required Storage (MB)
Minimum Observable Wave
Period for non-directional
(sec)
Minimum Observable Wave
Period for directional (sec)
Samples per Wave Burst
Altitude of Sensor Head
above the bottom (m)
Site A
32
0.50 (1.6 ft)
180
1.02
00:15:00
18
01:00:00
35
0*
20
1.6 (5.3 ft)
17.1 (56ft)
1348/105
412
2.00
2.95
2160
0.46 (1.5 ft)
SiteB
27
0.50 (1.6 ft)
210
0.94
00:15:00
N/A
N/A
35
0*
20
1.6 (5. 3 ft)
14.6 (47.9 ft)
401/105
6.67
N/A
N/A
N/A
0.41 (1.3ft)
SiteC
36
0.50 (1.6 ft)
90
0.73
00:15:00
N/A
N/A
35
0*
20
1.1 (3.6 ft)
18. 6 (61.0 ft)
180/105
8.4
N/A
N/A
N/A
0.41 (1.3ft)
*A magnetic declination of -7.9 degrees was applied during post-processing.
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The ADCPs were mounted in the bases with their face oriented up at approximately 0.5 meters
above the bottom. Therefore, the first bin measurement is actually approximately two meters
above the bottom.
2.4 Data Analysis
2.4.1 Wave Data
Raw binary data files from the instrument were converted utilizing the RD Instruments software
WaveMonฎ version 3.04 into binary waves data files and binary current data files utilizing the
protocols and processing options outlined in the United States Geological Survey (USGS) Wave
Data Processing Toolbox Manual (USGS, 2006). A magnetic declination of-7.9 degrees was
applied to the data. The USGS Wave Data Processing Toolbox MATLABฎ programs were used
to remove out-of-water data collected during instrument deployment and recovery and to convert
the statistical wave parameters to EPIC-standard variables (NOAA-PMEL, 2006) and write the
data to a NetCDF file (Unidata, 2008) for distribution and archival. The NetCDF format embeds
a metadata structure with the data to document pertinent information regarding the deployment
and the parameters used to process the data. NetCDF data is portable to any computer platform
and is viewable with public-domain freely available software (e.g. ncbrowse).
2.4.2 Current Data
Current data was processed using the USGS ADCP Data Processing System (USGS, 2005) and
CMGTool (USGS, 2002). The ADCP Data Processing System consists of a series of
MATLABฎ programs that allows for data editing and quality assessment and converts the data
into NetCDF format with embedded metadata and in an EPIC compatible format. The ADCP
Data Processing System was used to check the data files for missing ensembles and to remove
bad data from the beginning and end of the files. It was also used to correct for magnetic
declination for sites B and C. CMGTooL provides a library of MATLABฎ programs for
analyzing ADCP data. These programs were used to conduct smoothing and lowpass filtering of
the data.
Because the ADCP reports current data for bins beyond the surface, the bins beyond the surface
need to be removed from the record. Additionally, the surface can provide scatterers in the water
column that can overwhelm the side lobe suppression of the transducers. Therefore, RD
Instruments (1996) cautions that data from the upper 6% of the water column can be
contaminated. The water depth and surface bins were determined using the depths reported in
the ADCP Data Processing System from the pressure sensor and/or the echo return intensity and
any bins that appeared to be out of the water, or within the top 6% of the surface were removed.
The resulting analysis determined that bins 1 through 18 at site A and bins 1 through 20 at sites
B and C provide reliable current data. This correlates to 2.1 to 10.6 meters (7 to 35 feet) above
the instrument face for site A, 2.1 to 11.6 meters (7 to 38 feet) for site B, and 1.6 to 11.1 meters
(5 to 36 feet) for site C.
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The water depth above the transducer was determined to vary from 9.8 to 12.9 meters (32.2 to
42.3 feet) at site A, 10.1 to 12.9 meters (33.1 to 42.3) at site B, and 9.5 to 12.3 meters (31.2 to
40.4 feet) at site C above the ADCP.
Surface, bottom and depth average currents were analyzed. Bin 18 (11.1 meters or 36 feet) at
site A, bin 20 (12.1 meters or 40 feet) at site B, and bin 20 (11.6 meters or 38 feet) were selected
to represent surface currents. Bin 1 was used to represent bottom currents at sites A and B and
bin 2 and site C. All correspond to an altitude of 2.1 meters (7 feet) above the bottom. To
determine average currents, the bins were averaged from bin 1 to the surface bin. To average
over the bins, the north and east components were averaged for each ensemble. These average
north and average east components were then used to calculate an average current magnitude and
direction for each ensemble. In calculating overall summary data and statistics, current data
from site A and B were combined to cover data gaps at site A. Tidal components were examined
after smoothing the data over one hour periods utilizing both a low pass filter (USGS, 2002) and
classical tidal harmonic analysis using a set of MATLABฎ programs, T_Tide (Pawlowicz et. al.,
2002). Harmonic analysis was conducted for a 326 day data record beginning October 23, 2007
using data from sites A and B for the most complete data record.
3.0 RESULTS
3.1 Waves
A wave rose for the entire deployment period is shown in figures 4 and 5 for wave height and
period, respectively. Waves are predominately out of the east and few exceed 2 meters (6.6 feet)
in height or 15 seconds in period. Figure 6 shows the wave roses for each quarterly deployment.
Figures 7 and 8 show box plots of the monthly significant wave heights and wave periods,
respectively. Monthly median significant wave heights ranged from 0.7 meters (2.3 feet) in June
to 1.2 meters (3.9 feet) in October. Wave periods were typically in the 4 to 11 second range.
Histograms of significant wave height and wave period are shown in figures 9 and 10. Overall,
the median and mean wave heights were 0.78 and 0.86 meters (2.6 and 2.8 feet), respectively.
The median and mean wave periods were both 7.3 seconds.
3.2 Currents
A current rose for depth average currents for the entire deployment period is shown in figure 11.
Currents flow is predominately in the north-northwest and south-southeast direction. Quarterly
current roses for depth average currents are shown in figure 12. The summer months appeared to
have a more dominate northerly current and the fall months a more southerly current. Current
roses for near surface and near bottom currents are shown in figure 13. Near surface currents are
up to 2.3 meters (7.5 feet) below the surface depending on tidal state. Near bottom currents are
approximately 2.1 meters (6.9 feet) above the bottom (1.6 meters above the instrument face).
Histograms for the currents are shown in figures 14 and 15. As is typically the case, surface
currents are stronger than near bottom currents. The median surface current was 24 cm/sec (0.8
ft/sec) whereas the median bottom currents was 13 cm/sec (0.4 ft/sec). The depth average
median current velocity was 17 cm/sec (0.6 ft/sec). For depth averaged currents most current
measurements were in the 15 to 20 cm/sec (0.5 to 0.7 ft/sec) range with 90 percent of the
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measurements below 35 cm/sec (1.1 ft/sec). The net direction of transport as shown by a
progressive vector diagram is to the north northeast. Bottom currents have a northwestern trend
and surface currents a northeastern trend (see figure 16).
Little spatial variability was seen between the three instrumented locations. Current roses for
sites B and C are shown in figure 17. Figures 18 through 20 show a comparison of the current
magnitude and direction of the three locations for a two week period in May 2008. The most
variability is observable in the surface currents. This may be an artifact of the different water
depths of the surface measurements for the different locations (see section 2.4.2).
A low pass filter was applied to data smoothed over one-hour periods to analyze non-tidal
variability. T_Tide was used to analyze the tidal components. Results are summarized in tables
4 through 6 and appendix C provides the complete tidal analysis output from T_Tide. Figure 21
shows the tidal cycle as represented by water depth for both the actual data set and a synthesized
data set utilizing the calculated tidal constituents. Two distinct high and low tides are seen per
day. Figures 22 and 23 show the north and east depth average current components for the
smoothed data, the non-tidal component and the predicted tidal component.
Table 4: Principal Tidal Constituents at the Georgetown ODMDSs
Symbol < Name Frequency (cycles/hour) Period (hours)
Oi
Ki
N2
M2
S2
1 I
1 Principal lunar diurnal |
; Lunisolar diurnal I
Lunar elliptic semidiurnal
! Principal lunar semidiurnal
| Principal solar semidiurnal |
0.0387
0.0418
0.0790
0.0805
0.0833
25.84
I 23.92
12.66
12.42
1 12.00
Table 5: Summary of Harmonic Analysis of Water Depth at the Georgetown ODMDS
Symbol i Amplitude (meters) ; Phase (degrees)
Oi
Kl
N2
M2
S2
0
0
0
0
0
0711
0967
1553
6525
1238
192.18
186.92
335.49
355.02
21.85
-7-
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Table 6: Summary of Harmonic Analysis of Currents at the Georgetown ODMDS
Symbol
Major Axis
(cm/s)
Minor Axis
(cm/s)
Inclination
(cc from east-degrees)
Phase
(degrees)
Surface Currents
N2
M2
S2
5.155
16.842
4.093
0.132
-1.643
-0.548
120.46
115.63
116.09
273.84
296.10
319.12
Bottom Currents
N2
M2
S2
3.243
14.269
2.591
-0.585
-1.710
-0.301
113.71
109.74
108.84
256.31
281.09
305.99
Depth Averaged Currents
N2
M2
S2
4.631
19.042
3.561
-0.543
-2.221
-0.597
115.21
114.80
112.17
266.85
291.76
312.93
4.0 SUMMARY AND CONCLUSIONS
Currents in the vicinity of the Georgetown ODMDS tend to have a significant semidiurnal tidal
component. Tidal excursions are estimated to be 1 to 3.5 km (0.5 to 1.9 nmi) in the north/south
direction and 0.5 to 1 km (0.3 to 0.5 nmi) in the east/west direction. Non-tidal currents are
predominately in the along shore direction and show periodic oscillations (see figures 22 and 23)
that may be related to overrides (e.g. the Me tidal constituent). There is a definite and consistent
northerly drift to the non-tidal currents. However, there were some periods of southerly currents
that occurred early in the study and during April, July and August of 2008 (see figure 16).
Spring and summer currents showed a definite northerly trend. The depth averaged median
current velocity was 17 cm/sec (0.6 ft/sec) with 90 percent of the measurements below 35 cm/sec
(1.1 ft/sec). Based on the progressive vector diagram, the average current drift over the study
period was 2.5 cm/sec (0.08 ft/sec) to the north and 2.3 cm/sec (0.07 ft/sec) to the east.
Waves in the vicinity of the Georgetown ODMDS are out the east. The highest measured waves
were in excess of 2.5 meters (8.2 feet) and occurred in September. Ninety percent of the wave
measurements were less than 1.3 meters (4.3 feet) with wave periods in the 4 to 11 second range.
Figure 24 compares the measured ocean wave height to the Wave Information Study (WIS)
hindcast data from 1980 through 1999 for station 333 23.4 km (12.6 nmi) east of the ODMDS
(U.S. Army, 2009). In general, measured wave heights were less than those in the WIS
especially during the winter months. The most frequent wave period was 9 seconds. Based on
linear wave theory, wave periods in excess of 4 seconds are of sufficient length to influence
bottom velocities at the depths of the ODMDS (USAGE, 1984) and therefore waves are likely to
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affect resuspension and transport of dredged material at the ODMDS.
Data from this study will be used to characterize the disposal, as input parameters for site
capacity models (e.g. MDFATE, MPFATE and LTFATE) and as input for water quality models
for evaluating dredged material (e.g. STFATE). Using the median values in this report,
recommend STFATE model input parameters for dredged material evaluations are provided in
Table 7.
Table 7: Recommended STFATE ambient velocity parameters for the Georgetown ODMDS
Depth1 (ft) Magnitude Direction
7.5 0.80 15ฐ from North
3J_8 0_4 330ฐ from North
1 Total water depth is 38.7 feet
5.0 ACKNOWLEDGEMENTS
Mel Parsons of the EPA Region 4 Science and Ecosystem Support Division led the field efforts
for deployment and recovery of the instruments. Doug Jager, Sarah Waterson and Drew Kendall
of the EPA Region 4 Dive Team and Nadia Lombardero of ANAMAR Environmental
Consulting provided additional diving support. Phil Wolf with the SAC provided technical
oversight as well as field support.
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6.0 REFERENCES
Coastal Engineering Research Center (1984). Shore Protection Manual. Department of the Army
Waterways Experiment Station. Vicksburg, MS.
Godin, Gabriel (1972). The Analysis of Tides. University of Toronto Press, Toronto, 264pp.
National Oceanic and Atmospheric Administration Pacific Marine Environmental Laboratory
(NOAA-PEML). http://www.epic.noaa.gov/epic/index.html. May 26, 2006.
Pawlowicz, R., B. Beardsley, and S. Lentz, (2002) Classical tidal harmonic analysis including
error estimates inMATLAB using T TIDE, Computers and Geosciences 28 (2002), pp. 929-937.
RD Instruments (1996) Acoustic Doppler Current Profiler: Principles of Operation, A Practical
Primer. January 1996, San Diego.
Strong, Brandon (2000). Workhorse ADCP Multi-Directional Wave Gauge Primer. RD
Instruments. Oct. 2000.
Unidata NetCDF (network Common Data Form).
http://www.unidata.ucar.edu/software/netcdf/index.html Accessed 2008 Feb. 5.
U.S. Army Engineer Waterways Experiment Station. (1984). Shore Protection Manual, Coastal
Engineeering Research Center, Vicksburg, MS.
U.S. Army Engineer Research Center Coastal Hydraulics Laboratory (2009). Wave Information
Study, http://frf.usace.army.mil/cgi-bin/wis/atl/atl main.html Accessed 2009 August 12. Station
333.
U.S. Geological Survey (2005). Acoustic Doppler Current Profiler Data Processing System
Manual. Open-File Report 00-458, Version 3. Woods Hole, MA. Sept. 2005.
U.S. Geological Survey (2006). Wave Data Processing Toolbox Manual. Open-File Report
2005-1211. Woods Hole, MA.
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APPENDIX A
FIGURES
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List of Figures
Figure 1 Instrumentation Location
Figure 2 Ocean Science Fiberglass ADCP Base at Site A
Figure 3 EPA Region 4 ADCP Base at Sites B and C
Figure 4 Georgetown ODMDS Wave Rose for Significant Wave Height
Figure 5 Georgetown ODMDS Wave Rose for Peak Wave Period
Figure 6 Georgetown ODMDS Quarterly Wave Rose Diagrams for Significant Wave
Height.
Figure 7 Georgetown ODMDS Monthly Significant Wave Heights
Figure 8 Georgetown ODMDS Monthly Peak Wave Periods
Figure 9 Georgetown ODMDS Histogram of Significant Wave Height
Figure 10 Georgetown ODMDS Histogram of Peak Wave Period
Figure 11 Georgetown ODMDS Depth Averaged Current Rose Diagram
Figure 12 Georgetown ODMDS Quarterly Current Rose Diagram for Depth Averaged
Currents
Figure 13 Georgetown ODMDS Current Rose for Surface and Near Bottom Currents
Figure 14 Georgetown ODMDS Current Magnitude Histogram
Figure 15 Georgetown ODMDS Current Direction Histogram
Figure 16
Figure 17 Georgetown ODMDS Depth Average Current Roses for Sites B and C.
Figure 18 Comparison of Depth Averaged Currents at Sites A, B, and C
Figure 19 Comparison of Surface Currents at Sites A, B, and C
Figure 20 Comparison of Near Bottom Averaged Currents at Sites A, B, and C
Figure 21 Georgetown ODMDS Tides for March 2008
Figure 22 Georgetown ODMDS Filtered and Tidal Currents (north/south component) for
March 2008
Figure 23 Georgetown ODMDS Filtered and Tidal Currents (east/west component) for
March 2008
Figure 24 Comparison of Measured Mean Wave Height to Wave Information Study (WIS)
Hindcast Mean Wave Heights
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o
w
m
2
w
o
Q
5
1
O
-------
./
Figure 2: Ocean Science fiberglass ADCP Base
at Site A
Figure 3: EPA Region 4 ADCP Base at Sites B
andC
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315
North
0
Wave Height (meters)
<=0.5
>0.5-1
EH>1 -1.5
45
270
225
135
180
Figure 4: Georgetown ODMDS Wave Rose for Significant Wave Height.
The figure represents the direction from which the waves are approaching.
North
0
Wave Period (seconds)
<=5
>5-10
315
45
270
0%
225
135
180
Figure 5: Georgetown ODMDS Wave Rose for Peak Wave Period.
The figure represents the direction from which the waves are approaching.
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Wave Height (meters)
<=0.5
O>0.5-1
>1-1.5
>1.5-2
>2-2.5
/ November -
February
orth
/ March -
May
Wave Height (meters)
<=0.5
O>0.5-1
>1-1.5
>1.5-2
>2-2.5
Jorth
June -
July
Wave Height (meters)
>2-2.5
Frequency
Jorth
August-
October
' Wave Height (meters)
<=0.5
>2-2.5
Frequency
8% 12% 16% 2(5%
Figure 6: Georgetown ODMDS Quarterly Wave Rose Diagrams for
Significant Wave Height. The figures represents the direction from which
the waves are approaching. The last two quarters are from incomplete
data (see table 2).
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2.5
2.0 -
CD
-i'
CD
1.5 -
1.0 -
0.5 -
0.0
I
I \ \ \ I I I I
Figure 7: Georgetown ODMDS Monthly Significant Wave Heights
* Incomplete data record.
18
16 -
14 -
12 -
o 10 -
o
o
% 8^
.
: I i T T "
I
i
i T T IT
i fzf
' : : : i
T T S
i
-r- - T
T -p. T 4-
TT i !
1 !
Figure 8: Georgetown ODMSD Monthly Peak Wave Periods
* Incomplete data record.
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cr
20% -i
18% -
16% -
14% -
12% -
10% -
8% -
6% -
4% -
2% -
0% -
n
i i | f\\
i
1
-
1
1
/
r
I
t
1
-
/
_
/
-
/
/
-
/
s
I-I
X
X
-
x--~-
Mean = 0.86 meters
Median = 0.78 meters
HHn
1 II Irinn^
100%
- 90%
- 80%
- 70%
>,
ฃ
- 60% 8
E
LL
- 50% s>
>
"ro
- 40% |
D
O
- 30%
- 20%
- 10%
r 0%
0.0 0.5 1.0 1.5 2.0
Significant Wave Height (m)
2.5
3.0
Figure 9: Georgetown ODMDS Histogram of Significant Wave Height
Z.O 70
20% -
gj. 15% -
c
0)
3
cr
ฎ
U- 10% -
5% -
no/, .
^
, i
y
/
/
/
/
y
/
/
/
/
/
f
/
f
/
/
/,
/
| 1
/"
X1
x-
^-^
mean = 7.3 seconds
median = 7.3 seconds
nn_
" 1 UU
- 90
- 80
-70 >,
o
c
0)
-60 =
ฃ
LJ_
- 50 a,
>
15
- 40 3
E
3
-30 ฐ
- 20
- 10
- n
5 10 15
Dominant Wave Period (seconds)
20
Figure 10: Georgetown ODMDS Histogram of Peak Wave Period
-------
315
270
225
North
0
45
135
Depth Averaged Currents
Current Speed
(cm/sec)
n<=io
I|>10-15
>15-20
>20 - 25
>25 - 30
>30 - 35
I l>35
180
Figure 11: Georgetown ODMDS Depth Averaged Current Rose Diagram.
Diagram indicates direction currents are flowing.
-------
North
0
315 /
45
270
225 \y
180
North
0
315 /
270
90
225 \/
4% 8% 12%-r6%
Frequency /
vX 135
North
0
315 /""
r /Feb. -/
/ /Apr/
270
225
45
90
4% /8% t2%t)6%
O Frequency /
315 /
270
180
180
Figure 12: Georgetown ODMDS Quarterly Current Rose Diagrams for
Depth Averaged Currents. Diagram indicates direction currents are flowing.
-------
North
0
315
270
225
315 /
270
225
\ 45
135
180
North
0
45
Surface Currents
Current Speed
(cm/sec)
n<=io
I |>10-15
O>15-20
>20 - 25
>25 - 30
>30 - 35
Bottom Currents
Current Speed
(cm/sec)
n<=io
I |>10-15
O>15-20
I I >20 - 25
>25 - 30
>30 - 35
135
180
Figure 13: Georgetown ODMDS Current Rose for Surface and Near Bottom
Currents. Diagrams indicate direction currents are flowing.
-------
O
c
O)
cr
O)
25% -
20% -
15% -
10% -
5% -
A
Y
' X
p
i -
/
\
i
..c
'"" /
.,
X
1 X
Vr
.r
>"" m
S
xj
7^~
V
-, 'ฑ^^
^
'
^
^.''
^-
r'"
^^H Depth Average
'" \ \ Near Bottom
^H Surface
Depth Average
-O- Near Bottom
T~ Surface
i
1 1
II li
1
ll 1
3
j
I,
; 90%
- 80%
- 70%
- 60%
- 50%
- /ino/.
- 30%
- 20%
- 10%
10 15 20 25 30
Current Speed (cm/sec)
35
40
>s
o
0
c
cr
0
E
3
O
45
Figure 14: Georgetown ODMDS Current Magnitude Histogram
4n% -
>. -3n% -
C
-------
North
0
315
270
225
45
135
Depth Averaged Currents
SiteB
Current Speed
(cm/sec)
n<=io
O>10- 15
I |>15-20
I I >20 - 25
>25 - 30
>30 - 35
180
North
0
315
270
225
180
45
Depth Averaged Currents
SiteC
/ 135
Current Speed
(cm/sec)
>10-15
^>15-20
>20 - 25
>25 - 30
>30 - 35
H>35
Figure 17: Georgetown ODMDS Depth Averaged Current Roses for Sites B
and C. Diagrams indicate direction currents are flowing.
-------
E
cp
D)
CD
0
0
0
D)
O
Q.
-------
5/15 5/16 5/17 5/18 5/19 5/20 5/21
360
r
5/15
5/16
5/17
5/18
5/19
5/20
5/21
Figure 18: Comparison of Depth Averaged Currents at Sites A, B and C.
-------
120 -r
5/15
5/16
5/17
5/18 5/19
5/20
5/21
g
'-4ซ
O
ฃ
b
-!-
c
b
3
o
360
315 -
270 -
225 -
180 -
135 -
90 -
45 -
5/14
5/15
5/16
5/17 5/18
5/19
5/20
5/21
Figure 18: Comparison of Surface Currents at Sites A, B and C.
-------
5/14 5/15 5/16 5/17 5/18
5/19 5/20 5/21
360
315 -
270 -
ฃ 225 -
o
o>
180 -
135 -
90 -
45 -
O
r
5/14
5/15
5/16
5/17
5/18
5/19
5/20
5/21
Figure 20: Comparison of Near Bottom Currents at Sites A, B and C.
-------
13.0
Q.
(U
Q
i_
(U
(U
(0
(U
Mean
3/1/08
3/8/08
3/15/08
3/22/08
3/29/08
13.0
Q.
(U
Q
s_
(U
-I
.CO
(0
(U
N
'(/)
(U
^
"c
5^
CO
10.0 4
3/1/08
Mean
3/8/08
3/15/08
3/22/08
3/29/08
Figure 21: Georgetown ODMDS Tides for March, 2008.
-------
O
_O
O>
80
60 -
40 -
20 -
0 -
-20 -
o -40 H
E
w -60 H
-80
3/1/08
3/8/08
3/15/08
3/22/08
3/29/08
3/8/08
3/15/08
3/22/08
3/29/08
3/8/08
3/15/08
3/22/08
3/29/08
Figure 22: Georgetown ODMDS Filtered and Tidal Currents
(north/south component) for March 2008.
-------
10
3/8/08
3/15/08
3/22/08
3/29/08
o
8 -
ฃ 6-
o
_o
O>
a
CD
CD
^ 0
4 -
2 -
CO
CL
I
-2 -
-4 -
-6
3/1/08
3/8/08
3/15/08
3/22/08
3/29/08
CD 10 -
ฃ
Q.
O)
95%
O
a.
E
o
0
"CD
a
i-
-10 -
-20 -
'.rril|l||||||||||l|Tnilll|||||||!||!H'M"ซ
3/1/08 3/8/08 3/15/08 3/22/08 3/29/08
95%
Figure 23: Georgetown ODMDS Filtered and Tidal Currents
(east/west component) for March 2008.
-------
(/)
cc
CD
CL
O
Q
CO
Q
oo n
co ^
co u
c ง
o >
'= 2
CO D)
CO O
=r CD
*%
K
ป
^
C
.0
"co
E
0
CO
0 f-
=^6
0 CO
> o>
2 0
(/) CD
CD ^
0 >
q
c\i
(LU)
]H
]H
^>x
IO
10
o
A|L|iuo|/\|
C
O
CD
o
8
3 "?
.^3
LL C/)
-------
This page intentionally left
blank for duplex printing.
-------
APPENDIX B
DATA FILES
-------
DATA FILES
Georgetown_ODMDS_Wave&Current_Study.pdf Study Report
Georgetown ODMDS Processed Data CSV Files
GeorgetownODMDS_Waves.csv Wave Statistic Output
GeorgetownODMDS_Currents_15min.csv . Depth averaged and individual bin u & v currents
and surface, bottom and depth averaged current
magnitude and direction every 15 minutes. Data
record from 10/23/07 to 9/14/08.
GeorgetownODMDS_Currents_lhr.csv . Depth averaged and individual bin u & v currents
and surface, bottom and depth averaged current
magnitude and direction averaged over one hour
periods. Data record from 10/23/07 to 9/14/08.
Georgetown ODMDS Processed Data Excel Files
Current Files 15 minute and one hour interval
current record at sites A, B, and C.
GTOD_Waves_all.xls Wave and water depth parameters by season.
NetCDF Files
NCBrowse
ncBrowse_install_rel 1_6_3 .exe
This software can be used to view the NetCDF files (*.nc). This software was developed at the Joint Institute for
the Study of the Atmosphere and Ocean (JISAO), a joint institute of the University of Washington (UW) and the
National Oceanic and Atmospheric Administration's (NOAA) Pacific Marine Environmental Laboratory (PMEL),
and funded by NOAA/ESDIM, NOAA/HPCC, NSF, and NOAA/PMEL. Help, updates and a users guide can be
found at: http://www.epic.noaa.gov/java/ncBrowse/
Georgetown ODMDS Processed NetCDF Wave Data Files
GTOlWavesp-cal.nc Deployment 1 Time series of pressure & velocities
GT02Wavesp-cal.nc.nc Deployment 2 Time series of pressure & velocities
GT03Wavesp-cal.nc.nc Deployment 3 Time series of pressure & velocities
GT04Wavesp-cal.nc.nc Deployment 4 Time series of pressure & velocities
GTOlWavesr-cal.nc Deployment 1 Time series of statistical wave parameters
GTOlWavesr-cal.nc Deployment 2 Time series of statistical wave parameters
GTOlWavesr-cal.nc Deployment 3 Time series of statistical wave parameters
GTOlWavesr-cal.nc Deployment 4 Time series of statistical wave parameters
-------
Georgetown ODMDS Processed NetCDF Current Data Files
GTOO_001 .nc Deployment 1 EPIC NetCDF Best Basic Version (BB V)
GTOO_002.nc Deployment 2 EPIC NetCDF Best Basic Version (BBV)
GTOO_003a.nc .Deployment 3, Site A, EPIC NetCDF Best Basic Version (BBV)
GTOO_003b.nc . Deployment 3, Site B, EPIC NetCDF Best Basic Version (BBV)
GTOO_003c.nc . Deployment 3, Site C, EPIC NetCDF Best Basic Version (BBV)
GTOO_004.nc Deployment 4 EPIC NetCDF Best Basic Version (BBV)
Binary Files
Georgetown ODMDS RD Instruments Raw Binary Data
GTOD1001.000 Deployment 1 binary ADCP Data
GTOD2AOO.OOO Deployment 2 binary ADCP Data
GTOD3000.000 Deployment 3 binary ADCP Data
GTOD4000.000 Deployment 4 binary ADCP Data
Georgetown ODMDS RD Instruments Binary Current Data
GTOD_001_000_CUR.PDO Deployment 1 binary ADCP current data
GTOD_002_000_CUR.PDO Deployment 2 binary ADCP current data
GTOD_003_000_CUR.PDO Deployment 3, Site A, binary ADCP current data
GTODBOOO.OOO Deployment 3, Site B, binary ADCP current data
GTODCOOO.OOO Deployment 3, Site C, binary ADCP current data
GTOD_004_000_CUR.PDO Deployment 4 binary ADCP current data
Georgetown ODMDS RD Instruments Binary Wave Data
GTOD_001_OOO.wvs
GTOD_001_001.wvs
GTOD_001_002.wvs
GTOD_001_003.wvs
GTOD_001_004.wvs
GTOD_001_005.wvs
GTOD_001_006.wvs
GTOD_001_007.wvs
GTOD_001_008.wvs
GTOD_001_009.wvs
GTOD_001_010.wvs
GTOD_001_011.wvs
GTOD_001_012.wvs
GTOD_001_013.wvs
GTOD_001_014.wvs
GTOD_001_015.wvs Deployment 1 binary wave data
-------
GTOD
GTOD"
GTOD"
GTOD
GTOD"
GTOD"
GTOD"
GTOD
GTOD"
GTOD"
GTOD"
GTOD
GTOD"
GTOD"
GTOD"
_002_000.wvs
_002_001.wvs
002_002.wvs
002_003.wvs
002_004.wvs
002_005.wvs
002_006.wvs
002_007.wvs
002_008.wvs
002_009.wvs
002_010.wvs
002_011.wvs
002_012.wvs
002_013.wvs
002 014.WVS
GTOD_003
GTOD_003~
GTOD_003~
GTOD_003
GTOD_003~
GTOD_003~
GTOD_003~
GTOD_003
GTOD 003"
OOO.wvs
OOl.wvs
002.WVS
003. wvs
004.wvs
OOS.wvs
006.WVS
007.WVS
OOS.wvs
GTOD
GTOD
GTOD"
GTOD"
GTOD"
GTOD
GTOD"
004_000.wvs
004_001.wvs
004_002.wvs
004_003.wvs
004_004.wvs
004_005.wvs
004 006.WVS
Deployment 2 binary wave data
Deployment 3 binary wave data
Deployment 4 binary wave data
-------
APPENDIX C
COMPLETE TIDAL ANALYSIS OUTPUT
PROMT TIDE
T_TIDE output includes the following columns:
tide: tidal constituent
freq: frequency (cycles/hour)
Currents
major: major axis of tidal ellipse (cm/sec)
emaj: error estimate (95% confidence limit) for major axis (cm/sec)
minor: minor axis of tidal ellipse (cm/sec)
emin: error estimate (95% confidence limit) for minor axis (cm/sec)
inc: inclination of major axis (counter clockwise from east in degrees)
einc: error estimate (95% confidence limit) for inclination (degrees)
Water Depth
amp: amplitude (meters)
amp_err: error estimate (95% confidence limit) for amplitude (meters)
phase: constituent phases (degrees relative to Greenwich)
epha: error estimate (95% confidence limit) of phase (degrees)
snr: signal to noise ratio
-------
Georgetown ODMDS Bottom Currents
file name: GTBinl.out
date: 08-Jul-2009
nobs = 7835, ngood = 7820, record length (days) = 326.46
start time: 23-Oct-2007 22:00:00
rayleigh criterion = 1.0
Greenwich phase computed with nodal corrections applied to amplitude \n and phase relative to
center time
2.2, x trend= 0
tide
SSA
MSM
MM
MSF
MF
ALP1
2Q1
SIG1
Ql
RHO1
Ol
TAU1
BET1
NO1
CHI1
PI
*K1
PHI1
THE1
Jl
SOI
OO1
UPS1
OQ2
EPS2
*2N2
MU2
*N2
*NU2
*M2
*MKS2
LDA2
*L2
*S2
*K2
MSN2
ETA2
*MO3
*M3
SO3
MK3
*SK3
MN4
*M4
SN4
*MS4
MK4
*S4
SK4
f reg
0.0002282
0.0013098
0.0015122
0.0028219
0.0030501
0.0343966
0.0357064
0.0359087
0.0372185
0.0374209
0.0387307
0.0389588
0.0400404
0.0402686
0.0404710
0.0415526
0.0417807
0.0420089
0.0430905
0.0432929
0.0446027
0.0448308
0.0463430
0.0759749
0.0761773
0.0774871
0.0776895
0.0789992
0.0792016
0.0805114
0.0807396
0.0818212
0.0820236
0.0833333
0.0835615
0.0848455
0.0850736
0.1192421
0.1207671
0.1220640
0.1222921
0.1251141
0.1595106
0.1610228
0.1623326
0.1638447
0.1640729
0.1666667
0.1668948
pha
204 .
270.
301.
180.
331.
28.
138.
168.
341.
324 .
132.
353 .
344.
347.
249.
5 .
122.
183.
1.
29 .
341.
95 .
93 .
103.
37 .
235.
243.
256.
237
281.
357 .
333.
272.
305.
336.
.18
.29
. 40
.36
. 33
.06
. 02
.24
.37
.24
.29
.00
.48
. 91
37
. 05
.73
. 95
. 02
.85
. 73
.13
.15
. 70
. 83
. 56
. 84
.31
, 62
.09
. 46
.18
. 68
. 99
. 50
epha
76.
101.
163.
151.
117.
51.
103.
101.
107 .
116.
78.
156.
62 .
191.
95 .
87 .
32.
68.
129.
133.
222 .
116.
167.
111.
143.
43.
142.
8.
59 .
1.
47.
65 .
31.
9 .
28.
. 63
. 61
. 92
.60
.00
. 82
. 22
.29
. 84
. 67
. 97
. 67
.18
. 25
. 23
. 47
. 04
. 04
. 44
. 68
.51
.20
.74
. 85
.33
. 49
. 50
37
. 27
.85
.03
. 67
. 06
. 08
.33
0
0
0
0
0
0
o
o
0
0
0
0
0
0
0.
0
0
o
0
o
snr
. 82
0. 4
.14
. 23
.45
1.3
.54
. 63
. 49
.34
1.2
.31
1.5
.11
.49
. 76
4 .5
1.3
. 46
. 29
013
. 44
.15
.53
.38
2. 6
. 42
56
2 . 4
l.le+003
2 . 5
1. 6
4 .1
32
4 .7
-------
*M6
2MS6 0.2443561
2MK6 0.2445843
2SM6 0.2471781
MSK6 0.2474062
3MK7
M8
total var= 306.3165 pred var= 107.7577
percent total var predicted/var original= 35.2 %
Georgetown ODMDS Surface Currents
file name: GTBinlS.out
date: 08-Jul-2009
nobs = 7835, ngood = 7820, record length (days) = 326.46
start time: 23-Oct-2007 22:00:00
rayleigh criterion = 1.0
Greenwich phase computed with nodal corrections applied to amplitude \n and phase relative to
center time
ellipse parameters with 95
CI estimates
tide
SSA
MSM
MM
MSF
MF
*ALP1
2Q1
SIG1
Ql
RHO1
01
TAU1
BET1
NO1
CHI1
PI
*K1
PHI1
THE1
Jl
SOI
OO1
UPS1
OQ2
EPS2
2N2
MU2
*N2
NU2
*M2
MKS2
LDA2
L2
*S2
freq
0.0002282
0.0013098
0.0015122
0.0028219
0.0030501
0.0343966
0.0357064
0.0359087
0.0372185
0.0374209
0.0387307
0.0389588
0.0400404
0.0402686
0.0404710
0.0415526
0.0417807
0.0420089
0.0430905
0.0432929
0.0446027
0.0448308
0.0463430
0.0759749
0.0761773
0.0774871
0.0776895
0.0789992
0.0792016
0.0805114
0.0807396
0.0818212
0.0820236
0.0833333
0.0835615
-------
MSN2
ETA2
MO3
M3
*SO3
MK3
SK3
*MN4
*M4
SN4
MS4
MK4
S4
SK4
2MK5
2SK5
*2MN6
*M6
*2MS6
2MK6
2SM6
MSK6
3MK7
*M8
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
0.
.0848455
. 0850736
.1192421
.1207671
.1220640
. 1222921
.1251141
.1595106
.1610228
.1623326
.1638447
.1640729
, 1666667
.1668948
.2028035
.2084474
.2400221
. 2415342
.2443561
.2445843
.2471781
.2474062
.2833149
.3220456
0.
0 .
0 .
0 .
0 .
0.
0.
1.
2 .
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
0.
.705
. 485
.341
.583
.775
.594
. 442
.268
.796
.294
. 841
.268
.294
. 470
.282
.283
.493
.596
.519
. 079
.126
.228
.158
. 423
0
0
0
0
0
0
0
0
0
0
o
o
0
o
0
0
0
0
0
0
0
0
0
0
0.
0 .
0 .
0 .
0 .
0.
0.
0.
1.
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
0.
.241
. 063
. 052
.135
. 003
.217
.073
.730
.674
. 032
. 012
. 047
.111
.167
.220
.184
.028
. 227
.229
. 031
. 026
. 071
.061
.018
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
0.
. 92
. 46
. 45
. 55
. 57
.58
. 48
.60
. 68
.41
. 64
.39
. 42
. 40
.31
. 2 6
33
. 35
.33
.20
.27
.22
.19
.20
344.
311.
79.
337 .
46.
132.
260.
197.
251.
49.
224 .
220.
251.
236.
243.
254 .
156.
174.
176.
129.
208.
151.
248.
53 .
.41
.52
. 79
.52
.25
7 7
.80
.31
. 44
7 7
. 50
. 85
.29
. 7 7
.13
.88
.49
. 02
.29
. 09
. 09
.37
. 73
. 2 9
134.
87 .
119.
81.
40.
71.
96.
53 .
23.
121.
50.
128.
135.
7 5 .
121.
103.
51.
50.
53.
192.
142.
75 .
108.
25 .
.43
. 07
. 04
. 41
. 88
. 92
. 12
. 89
. 64
. 84
. 76
. 96
.18
.20
. 4 2
. 52
.07
. 90
. 96
. 79
. 83
. 61
. 43
.38
total var= 838.1819 pred var= 168.8162
percent total var predicted/var original= 20.1 %
Georgetown ODMDS Depth Average Currents
file name: GT_avg.out
date: 08-Jul-2~009
nobs = 7835, ngood = 7820, record length (days) = 326.46
start time: 23-Oct-2007 22:00:00
rayleigh criterion = 1.0
Greenwich phase computed with nodal corrections applied to amplitude \n and phase relative to
center time
tide
SSA
MSM
MM
MSF
MF
ALP1
2Q1
SIG1
Ql
RHO1
*O1
TAU1
BET1
NO1
CHI1
PI
*K1
PHI1
THE1
Jl
SOI
freq
0 .
0 .
0 .
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
0.
. 0002282
. 0013098
. 0015122
.0028219
.0030501
. 0343966
.0357064
. 0359087
. 0372185
. 0374209
. 0387307
. 0389588
. 0400404
. 0402686
.0404710
. 0415526
. 0417807
. 0420089
. 0430905
.0432929
. 0446027
ph;
194 .
281.
307 .
203.
311.
0
156.
167 .
325.
326.
140.
317.
337 .
324 .
269.
276.
125.
148.
20.
6.
211.
'i
.22
.29
. 88
. 23
.58
. 7 9
.11
.19
.15
. 93
. 75
93
. 44
. 32
. 95
. 41
. 63
.32
.11
. 27
.87
ept
70.
98.
154 .
184.
102.
55
112.
62.
120.
98.
86.
72 .
45.
161.
95 .
59.
21.
71.
112.
172.
144.
la
.37
. 60
. 94
.87
7 3
66
. 02
. 81
. 43
.72
. 05
. 83
.85
. 48
7 7
.71
. 88
.28
.29
. 67
.03
0
0
0
0
0
0
0
0
0
o
o
0
0
snr
. 61
. 64
.23
.19
.48
1 . 3
0.3
1.1
.58
. 75
2
. 68
1.7
.18
0.5
1. 9
7 .1
. 64
.52
.15
.34
-------
OO1
UPS1
OQ2
EPS2
*2N2
MU2
*N2
*NU2
*M2
*MKS2
LDA2
*L2
*S2
*K2
MSN2
ETA2
*MO3
*M3
*SO3
MK3
*SK3
MN4
*M4
SN4
*MS4
*MK4
S4
SK4
2MK5
*2SK5
2MN6
*M6
2MS6
2MK6
2SM6
MSK6
3MK7
M8
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0 .
0 .
0 .
0 .
.0448308
. 0463430
.0759749
. 0761773
. 0774871
.0776895
. 0789992
.0792016
.0805114
. 0807396
. 0818212
. 0820236
. 0833333
. 0835615
.0848455
. 0850736
.1192421
.1207671
.1220640
.1222921
.1251141
. 1595106
.1610228
.1623326
.1638447
.1640729
, 1666667
.1668948
.2028035
.2084474
.2400221
. 2415342
.2443561
.2445843
.2471781
.2474062
.2833149
.3220456
Georgetown ODMDS Water Depth
file name: GT_depth.out
date: OS-Jul-2009
nobs = 5741, ngood = 5737, record length (days) = 239.21
start time: 23-Oct-2007 22:00:00
rayleigh criterion = 1.0
Greenwich phase computed with nodal corrections applied to amplitude \n and phase relative to
center time
tidal amplitude and phase with 95% CI estimates
amp
amp err
pha
-------
BET1
NO1
CHI1
*P1
*K1
PHI1
THE1
Jl
SOI
OO1
UPS1
OQ2
EPS2
*2N2
*MU2
*N2
*NU2
*M2
MKS2
LDA2
*L2
^ S2
^K2
MSN2
ETA2
*MO3
*M3
SO3
MK3
*SK3
*MN4
*M4
SN4
*MS4
MK4
S4
SK4
2MK5
2SK5
*2MN6
*M6
*2MS6
2MK6
2SM6
MSK6
3MK7
M8
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0 .
0 .
0
0 .
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
. 0400404
. 0402686
. 0404710
. 0415526
. 0417807
. 0420089
.0430905
. 0432929
. 0446027
. 0448308
. 0463430
. 0759749
. 0761773
. 0774871
. 0776895
. 0789992
.0792016
.0805114
. 0807396
. 0818212
. 0820236
. 0833333
.0835615
. 0848455
.0850736
.1192421
.1207671
.1220640
. 1222921
.1251141
.1595106
.1610228
. 1623326
.1638447
.1640729
, 1666667
.1668948
.2028035
.2084474
.2400221
. 2415342
.2443561
.2445843
.2471781
.2474062
.2833149
.3220456
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0 .
0 .
0 .
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
.0007
. 0070
. 0016
. 0374
. 0967
.0009
.0018
. 0068
.0030
. 0029
. 0015
. 0039
. 0080
. 0190
.0207
.1553
.0346
. 6525
. 0038
. 0065
. 0194
.1238
. 0320
. 0029
.0025
.0069
. 0127
. 0036
.0020
. 0082
.0043
.0057
. 0007
.0051
. 0018
. 0025
. 0012
. 0006
.0008
.0030
.0031
. 0028
. 0014
. 0007
. 0007
. 0004
.0001
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0 .
0 .
0 .
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
0.
0.
0.
0 .
0 .
0 .
0 .
0.
.004
. u07
. 004
. 007
. 006
.006
.005
.007
.005
.004
. 003
. 004
. 006
. 006
.006
.005
.006
.006
. 004
. 006
. 005
. 006
.005
.005
.003
.004
. 005
. 004
. 004
.002
.002
. 001
.002
. 002
. 002
. 001
. 001
.001
.002
.002
.001
. 001
. 001
. 001
. 001
.000
185.
210.
197 .
191.
186.
139.
223.
186.
113.
268.
236.
298.
3.
313.
341.
335 .
330.
355 .
108.
353.
12.
21.
15.
74.
334 .
109.
55.
135.
281.
346.
326.
322 .
354 .
269.
292.
82.
13.
308.
268.
256.
312.
40.
350.
155.
156.
281.
301.
.31
. 57
.31
. 01
. 92
. 23
.19
.51
.09
.31
. 06
.21
.54
. 85
.10
.49
.41
. 02
. 63
.78
. 75
. 85
. 37
.85
. 57
.80
. 95
. 42
. 7 5
. 80
.08
.89
. 45
.04
. 08
. 70
. 68
.39
.05
. 66
.00
.18
. 00
. 42
. 57
. 46
. 25
214 .
57 .
168.
11.
3.
203.
185.
50.
105.
96.
133.
85.
41.
17 .
16.
2 .
10.
0.
67 .
58.
15.
2.
-J
117.
86.
35 .
23.
63.
112 .
31.
27 .
21 .
154 .
53.
48.
82.
106.
82.
31.
29 .
29 .
48.
138.
83.
127 .
210.
.19
. 61
. 47
.28
. 94
. 66
.40
. 57
9 9
. 2 4
. 96
.12
.74
.18
. 95
.13
.86
. 53
.34
. 57
. 48
. 85
.34
.54
. 2 6
. 82
. 7 5
. 92
9 9
. 06
.09
.00
. 03
.84
.36
. 81
.12
.58
. 35
. 37
. 63
. 2 4
.20
. 86
. 67
. 91
. 95
0.035
0. 93
0.14
28
2.3e+002
0. 026
0.14
1
0.38
0.5
0.18
0. 82
1. 9
11
12
8e+002
30
1.2e+004
0.79
1.3
16
3. 7e + 002
44
0.35
0.56
3.1
6.2
1
0.29
3. 4
4
6.7
0.21
6. 4
1.3
1.5
0. 86
0.37
0.74
3 . 3
3 . 9
4.1
1.7
0.31
0.59
0.33
0.029
------- |