all_bathy.html
Metadata also available as
Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator: Yael Sagy
- Originator: David Finlayson
- Publication_Date: 2007
- Title:
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all_bathy.txt - Sidescan sonar bathymetry image of the entier region
- Edition: (Version 1.0, May 15, 2007)
- Geospatial_Data_Presentation_Form: map
- Larger_Work_Citation:
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- Citation_Information:
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- Originator: Jonathan Warrick
- Originator: Guy R. Cochrane
- Originator: Yael Sagy
- Originator: David Finlayson
- Originator: Jodi Harney
- Publication_Date: 2006 (publication in process)
- Title:
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Sea-Floor Mapping and Benthic Habitat GIS at the mouth of the Elwha River, Washington.
- Geospatial_Data_Presentation_Form: map
- Series_Information:
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- Series_Name: USGS Data Series
- Issue_Identification: 320
- Publication_Information:
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- Publication_Place: Santa Cruz, CA
- Publisher: U.S. Geological Survey
- Online_Linkage: <URL:https://pubs.usgs.gov/ds/320)>
- Description:
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- Abstract:
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The sonar bathymetry image of the nearshore sea floor (0 to 80 m water depths)
of the Elwha River mouth area was mosaicked from data collected
in 2005. A 234 kHz Interferometric Submetix Swath Bathy Sonar System; SEA Swath Processor,
v. 2.05, SEA Grid Processor v. 2.05, was used for geophysical surveying.
The 2005 survey was navigated with a CodaOctopus, Model F180, Differential Global
Positioning System (DGPS). A KVH Industries Inc. azimuth digital
gyro-compass provided ship headings with 0.5 degree accuracy. Navigation
data were recorded using Yo-Nav version 1.19 (Gann, 1992). The sidescan
fish was towed approximately 30 m above the sea floor. The distance of
the fish behind the ship was not known during this survey and must be
estimated when the data are processed in order to produce the sidescan
image mosaics. The resolution of the processed data mosaics is 1 m.
This is one of a collection of digital files of a geographic
information system of spatially referenced data related to
the USGS Coastal and Marine Geology Program Nearshore Benthic Habitat Mapping
Project. See <http://walrus.wr.usgs.gov/research/projects/benthic_hab.html> for more information.
- Purpose:
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These data are intended for science researchers, students, policy
makers, and the general public. The data can be
used with geographic information systems (GIS) software
to display geologic and oceanographic information.
- Supplemental_Information:
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Additional information about the field activities from
which this data set was derived are available online at
<http://walrus.wr.usgs.gov/infobank/k/k105ps/html/k-1-05-ps.meta.html>
Any use of trade, product, or firm names is for descriptive purposes
only and does not imply endorsement by the
U.S. Government.ent.
Although this Federal Geographic Data Committee-compliant metadata
file is intended to document the data set in nonproprietary form,
as well as in ArcInfo format, this metadata file may include some
ArcInfo-specific terminology.
- Time_Period_of_Content:
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- Time_Period_Information:
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- Range_of_Dates/Times:
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- Beginning_Date: 20050315
- Ending_Date: 20050331
- Currentness_Reference: Ground Condition
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: As Needed
- Spatial_Domain:
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -123.636582
- East_Bounding_Coordinate: -123.542726
- North_Bounding_Coordinate: 48.170833
- South_Bounding_Coordinate: 48.136590
- Keywords:
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- Theme:
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- Theme_Keyword_Thesaurus: None
- Theme_Keyword: Coastal Geology
- Theme_Keyword: Marine Geology
- Theme_Keyword: sidescan sonar
- Theme_Keyword: remote-sensing image
- Theme_Keyword: MIPS
- Place:
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- Place_Keyword_Thesaurus: None
- Place_Keyword: Washington
- Place_Keyword: North Pacific Ocean
- Place_Keyword: Northern Pacific Ocean
- Place_Keyword: USA
- Place_Keyword: Olympic National Park
- Place_Keyword: Freshwater Bay
- Place_Keyword: Elwha River
- Place_Keyword: Ediz Hook
- Place_Keyword: Juan de Fuca Straits
- Place_Keyword: Port Angeles
- Access_Constraints: None
- Use_Constraints: None
- Point_of_Contact:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: Guy R. Cochrane
- Contact_Organization:
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United States Geological Survey (USGS)
Coastal and Marine Geology Program (CMGP)
- Contact_Position: Geophysicist
- Contact_Address:
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- Address_Type: mailing and physical address
- Address: USGS, 400 Natural Bridges Drive
- City: Santa Cruz
- State_or_Province: CA
- Postal_Code: 95060-5792
- Country: USA
- Contact_Voice_Telephone: (831) 427-4754
- Contact_Facsimile_Telephone: (831) 427-4748
- Contact_Electronic_Mail_Address: gcochrane@usgs.gov
- Data_Set_Credit:
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The authors would like to thank, Larry Kooker, Mike Boyle, Gerry Hatcher, Dave Hogg, and Hank
Chezar at the USGS Marine Facility (Redwood City, CA) contributed field support and logistical
support. Andrew Stevenson from the USGS Coastal and Marine Program.
The R/V Karluk was piloted by Katherine Peet from NOAA.
- Native_Data_Set_Environment:
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SunOS, 5.8, sun4u UNIX
Windows XP Professional, v. 2002, service pack 2
SEA Grid Processor v. 2.051
ArcGIS version 9.1
- Data_Quality_Information:
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- Attribute_Accuracy:
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- Attribute_Accuracy_Report: unknown
- Logical_Consistency_Report: Logical Consistency untested
- Completeness_Report: unknown
- Positional_Accuracy:
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- Horizontal_Positional_Accuracy:
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- Horizontal_Positional_Accuracy_Report: On the order of 10 meters
- Lineage:
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- Process_Step:
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- Process_Description:
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The following processing steps were applied in the same manner to all of the three
bathymetry grids: bat_east, bat_mid, and bat_west.
Started with .sxr files that were the output from A 234 kHz Interferometric Submetrix
Sonar System. We used Swath Processor (SEA SWATH_Plus) to process the sonar data. The .sxr
files were imported into SEA SWath Processor, inserting adjustments and offset information
such as ship's motion, tides, velocity of sound profiles, and relative sensor positions.
Lines were processed one by one and filter parameters were adjusted for each area and
julian date that the data was collected. The output is a .txt file that was leter on grided
and converted to an ESRGRID using Grid Processor and DMAgic softwares. In the
following we describe all the parameters used in Swath Processor listed by area and Julian date
(in output file format choose ASCII file and Attitude and Position):
EdizHook
Day 03.15.2005 (Julian day 74);
Bathy filters; Low-Amp = 20000, Range; Near Range (Max. Amplitude) = 3 m, Near Range
(Min. Amplitude) = 5 m, Phase Confidence = 50 %, Phase Smooth; Number of Points = 3,
Angle Proximity; Window = 25, Range = 0.1, threshold = 7, Minimum elevation = -90 degree,
Box; Min. Depth = 2 m, Max. Depth = 90 m, Median; Sample Window size = 3, Along track 1; Max.
Depth Difference = 3 m, Window Size = 2 m, Learn Rate = 0.6, Along track 2; Learn Rate = 0.6,
Mean; Window size = 1 m.
Set Filters; Approximate water Depth = 15 m, Maximum Range Required = 251 m,
Seabed Variation = Flat, Filter Level = Light.
Speed of sound; SOS Form; SOS table, Use of SOS Table; Full ray tracing, Default SOS; 1481.
1; Position; 467555 E 5332648 N, Time (HMS); 18;20;0, DMY; 15.3.2005.
Day 03.16.2005 (Julian day 75);
Bathy filters; Low-Amp = 110, Range; Near Range (Max. Amplitude) = 2 m, Near Range
(Min. Amplitude) = 5 m, Phase Confidence = 50 %, Phase Smooth; Number of Points = 3,
Angle Proximity; Window = 25, Range = 0.2, threshold = 7, Minimum elevation = -90 degree,
Box; Min. Depth = 2 m, Max. Depth = 80 m, Median; Sample Window size = 3, Along track 1; Max.
Depth Difference = 1 m, Window Size = 2 m, Learn Rate = 0.6, Along track 2; Max. Depth
Difference = 0.3 m, Window Size = 2 m, Learn Rate = 0.6, Mean; Window size = 1 m.
Set Filters; Approximate water Depth = 15 m, Maximum Range Required = 251 m, Seabed
Variation = Flat, Filter Level = Light.
Speed of sound; SOS Form; Auxiliary Port, Use of SOS Table; Full ray tracing, Default SOS; 1481.
1; Position; 467555 E 5332648 N, Time (HMS); 18;20;0, DMY; 15.3.2005.
Day 03.19.2005 (Julian day 78);
Bathy filters; Low-Amp = 110, Range; Near Range (Max. Amplitude) = 1 m, Near Range
(Min. Amplitude) = 2 m, Phase Confidence = 40 %, Phase Smooth; Number of Points = 3,
Angle Proximity; Window = 15, Range = 0.1, threshold = 5, Minimum elevation = -90 degree, Box;
Min. Depth = 1 m, Max. Depth = 25 m, Min. Horiz. Range = 0 m, Max. Horiz. Range = 80 m, Median;
Sample Window size = 3, Along track 1; Max. Depth Difference = 3 m, Window Size = 10 m,
Learn Rate = 0.6, Along track 2; Max. Depth Difference = 0.5 m, Window Size = 2 m,
Learn Rate = 0.6, Mean; Window size = 1 m.
Set Filters; Approximate water Depth = 5 m, Maximum Range Required = 80 m,
Seabed Variation = Flat, Filter Level = Medium.
Speed of sound; SOS Form; Auxiliary Port, Use of SOS Table; Full ray tracing, Default SOS; 1481.
1; Position; 455822 E 5332255 N, Time (HMS); 19;00;0, DMY; 18.3.2005.
2; Position; 456198 E 5332224 N, Time (HMS); 22;30;0, DMY; 17.3.2005.
3; Position; 465180 E 5332059 N, Time (HMS); 18;00;0, DMY; 19.3.2005.
Day 03.21.2005 (Julian day 80);
Bathy filters; Low-Amp = 110, Range; Near Range (Max. Amplitude) = 2 m, Near Range
(Min. Amplitude) = 4 m, Phase Confidence = 50 %, Phase Smooth; Number of Points = 3,
Angle Proximity; Window = 25, Range = 0.1, threshold = 7, Minimum elevation = -90 degree,
Box; Min. Depth = 3 m, Max. Depth = 40 m, Median; Sample Window size = 3, Along track 1;
Max. Depth Difference = 3 m, Window Size = 5 m, Learn Rate = 0.6, Along track 2; Max.
Depth Difference = 1 m, Window Size = 2 m, Learn Rate = 0.6, Mean; Window size = 1 m.
Set Filters; Approximate water Depth = 5 m, Maximum Range Required = 80 m, Seabed Variation = Flat,
Filter Level = Medium.
Speed of sound; SOS Form; Auxiliary Port, Use of SOS Table; Full ray tracing, Default SOS; 1481.
1; Position; 455822 E 5332255 N, Time (HMS); 19;00;0, DMY; 18.3.2005.
2; Position; 456198 E 5332224 N, Time (HMS); 22;30;0, DMY; 17.3.2005.
3; Position; 465180 E 5332059 N, Time (HMS); 18;00;0, DMY; 19.3.2005.
4; Position; 458858 E 5333511 N, Time (HMS); 18;20;0, DMY; 21.3.2005.
Day 03.27.2005 (Julian day 86);
Bathy filters; Low-Amp = 110, Range; Near Range (Max. Amplitude) = 2 m, Near Range
(Min. Amplitude) = 4 m, Phase Confidence = 42 %, Phase Smooth; Number of Points = 3,
Angle Proximity; Window = 5, Range = 0.3, threshold = 2, Minimum elevation = -90 degree,
Box; Min. Depth = 1 m, Max. Depth = 15 m, Median; Sample Window size = 3, Along track 1; Max.
Depth Difference = 2 m, Window Size = 5 m, Learn Rate = 0.6, Along track 2;
Max. Depth Difference = 0.5 m, Window Size = 2 m, Learn Rate = 0.6, Mean; Window size = 1 m.
Set Filters; Approximate water Depth = 5 m, Maximum Range Required = 80 m, Seabed Variation = Flat,
Filter Level = Medium.
Speed of sound; SOS Form; Auxiliary Port, Use of SOS Table; Full ray tracing, Default SOS; 1481.
1; Position; 454066 E 5332807 N, Time (HMS); 21;30;0, DMY; 27.3.2005.
Elwha
Day 03.17.2005 (Julian day 76);
Bathy filters; Low-Amp = 100, Range; Near Range (Max. Amplitude) = 2 m, Near Range
(Min. Amplitude) = 4 m, Phase Confidence = 42 %, Phase Smooth; Number of Points = 3,
Angle Proximity; Window = 25, Range = 0.1, threshold = 7, Minimum elevation = -90 degree,
Box; Min. Depth = 1 m, Max. Depth = 40 m, Median; Sample Window size = 3, Along track 1;
Max. Depth Difference = 2 m, Window Size = 7 m, Learn Rate = 0.6, Along track 2;
Max. Depth Difference = 0.5 m, Window Size = 2 m, Learn Rate = 0.6, Mean; Window size = 1 m.
Set Filters; Approximate water Depth = 15 m, Maximum Range Required = 251 m, Seabed Variation = Flat, Filter Level = Light.
Speed of sound; SOS Form; Auxiliary Port, Use of SOS Table; First value in table, Default SOS; 1481.
1; Position; 458233 E 5334156 N, Time (HMS); 18;50;0, DMY; 17.3.2005 (SVP 4).
2; Position; 456198 E 5332224 N, Time (HMS); 22;30;0, DMY; 17.3.2005.
Day 03.18.2005 (Julian day 77);
Bathy filters; Low-Amp = 110, Range; Near Range (Max. Amplitude) = 5 m, Near Range
(Min. Amplitude) = 9 m, Phase Confidence = 42 %, Phase Smooth; Number of Points = 3,
Angle Proximity; Window = 25, Range = 0.1, threshold = 3, Minimum elevation = -90 degree,
Box; Min. Depth = 10 m, Max. Depth = 40 m, Median; Sample Window size = 3, Along track 1;
Max. Depth Difference = 3 m, Window Size = 7 m, Learn Rate = 0.6, Along track 2;
Max. Depth Difference = 0.5 m, Window Size = 2 m, Learn Rate = 0.6, Mean; Window size = 1 m.
Set Filters; Approximate water Depth = 15 m, Maximum Range Required = 251 m, Seabed Variation = Flat, Filter Level = Light.
Speed of sound; SOS Form; Auxiliary Port, Use of SOS Table; Full ray tracing, Default SOS; 1481.
1; Position; 455822 E 5332255 N, Time (HMS); 19;00;0, DMY; 18.3.2005.
Day 03.19.2005 (Julian day 78);
Bathy filters; Low-Amp = 110, Range; Near Range (Max. Amplitude) = 1 m, Near Range
(Min. Amplitude) = 2 m, Phase Confidence = 40 %, Phase Smooth; Number of Points = 3,
Angle Proximity; Window = 15, Range = 0.1, threshold = 5, Minimum elevation = -90 degree,
Box; Min. Depth = 1 m, Max. Depth = 25 m, Min. Horiz. Range = 0 m, Max. Horiz. Range = 80 m,
Median; Sample Window size = 3, Along track 1; Max. Depth Difference = 3 m,
Window Size = 10 m, Learn Rate = 0.6, Along track 2; Max. Depth Difference = 0.5 m,
Window Size = 2 m, Learn Rate = 0.6, Mean; Window size = 1 m.
Set Filters; Approximate water Depth = 5 m, Maximum Range Required = 80 m, Seabed Variation = Flat, Filter Level = Medium.
Speed of sound; SOS Form; Auxiliary Port, Use of SOS Table; Full ray tracing, Default SOS; 1481.
1; Position; 455822 E 5332255 N, Time (HMS); 19;00;0, DMY; 18.3.2005.
2; Position; 456198 E 5332224 N, Time (HMS); 22;30;0, DMY; 17.3.2005.
3; Position; 465180 E 5332059 N, Time (HMS); 18;00;0, DMY; 19.3.2005.
Day 03.21.2005 (Julian day 80);
Bathy filters; Low-Amp = 110, Range; Near Range (Max. Amplitude) = 2 m, Near Range
(Min. Amplitude) = 4 m, Phase Confidence = 50 %, Phase Smooth; Number of Points = 3,
Angle Proximity; Window = 25, Range = 0.1, threshold = 7, Minimum elevation = -90 degree, Box;
Min. Depth = 3 m, Max. Depth = 40 m, Median; Sample Window size = 3, Along track 1;
Max. Depth Difference = 3 m, Window Size = 5 m, Learn Rate = 0.6, Along track 2;
Max. Depth Difference = 1 m, Window Size = 2 m, Learn Rate = 0.6, Mean; Window size = 1 m.
Set Filters; Approximate water Depth = 5 m, Maximum Range Required = 80 m, Seabed Variation = Flat, Filter Level = Medium.
Speed of sound; SOS Form; Auxiliary Port, Use of SOS Table; Full ray tracing, Default SOS; 1481.
1; Position; 455822 E 5332255 N, Time (HMS); 19;00;0, DMY; 18.3.2005.
2; Position; 456198 E 5332224 N, Time (HMS); 22;30;0, DMY; 17.3.2005.
3; Position; 465180 E 5332059 N, Time (HMS); 18;00;0, DMY; 19.3.2005.
4; Position; 458858 E 5333511 N, Time (HMS); 18;20;0, DMY; 21.3.2005.
Day 03.25.2005 (Julian day 84);
Bathy filters; Low-Amp = 110, Range; Near Range (Max. Amplitude) = 2 m, Near Range
(Min. Amplitude) = 3 m, Phase Confidence = 50 %, Phase Smooth; Number of Points = 3,
Angle Proximity; Window = 25, Range = 0.1, threshold = 7, Minimum elevation = -90 degree,
Box; Min. Depth = 3 m, Max. Depth = 45 m, Median; Sample Window size = 3, Along track 1;
Max. Depth Difference = 2 m, Window Size = 5 m, Learn Rate = 0.6, Along track 2;
Max. Depth Difference = 0.5 m, Window Size = 2 m, Learn Rate = 0.6, Mean; Window size = 1 m.
Set Filters; Approximate water Depth = 5 m, Maximum Range Required = 80 m, Seabed Variation = Flat, Filter Level = Medium.
Speed of sound; SOS Form; Auxiliary Port, Use of SOS Table; Full ray tracing, Default SOS; 1481.
1; Position; 452746 E 5333399 N, Time (HMS); 21;00;0, DMY; 25.3.2005.
Day 03.27.2005 (Julian day 86);
Bathy filters; Low-Amp = 110, Range; Near Range (Max. Amplitude) = 2 m, Near Range
(Min. Amplitude) = 4 m, Phase Confidence = 50 %, Phase Smooth; Number of Points = 3,
Angle Proximity; Window = 25, Range = 0.1, threshold = 7, Minimum elevation = -90 degree,
Box; Min. Depth = 1 m, Max. Depth = 15 m, Median; Sample Window size = 3, Along track 1;
Max. Depth Difference = 2 m, Window Size = 5 m, Learn Rate = 0.6, Along track 2;
Max. Depth Difference = 0.5 m, Window Size = 2 m, Learn Rate = 0.6, Mean; Window size = 1 m.
Set Filters; Approximate water Depth = 5 m, Maximum Range Required = 80 m, Seabed Variation = Flat, Filter Level = Medium.
Speed of sound; SOS Form; Auxiliary Port, Use of SOS Table; Full ray tracing, Default SOS; 1481.
1; Position; 454066 E 5332807 N, Time (HMS); 21;30;0, DMY; 27.3.2005.
ElwhaEast
Day 03.17.2005 (Julian day 76);
Bathy filters; Low-Amp = 100, Range; Near Range (Max. Amplitude) = 2 m, Near Range
(Min. Amplitude) = 4 m, Phase Confidence = 42 %, Phase Smooth; Number of Points = 3,
Angle Proximity; Window = 25, Range = 0.1, threshold = 7, Minimum elevation = -90 degree,
Box; Min. Depth = 1 m, Max. Depth = 40 m, Median; Sample Window size = 3, Along track 1;
Max. Depth Difference = 2 m, Window Size = 7 m, Learn Rate = 0.6, Along track 2;
Max. Depth Difference = 0.5 m, Window Size = 2 m, Learn Rate = 0.6, Mean; Window size = 1 m.
Set Filters; Approximate water Depth = 15 m, Maximum Range Required = 251 m,
Seabed Variation = Flat, Filter Level = Light.
Speed of sound; SOS Form; Auxiliary Port, Use of SOS Table; First value in table, Default SOS; 1481.
1; Position; 458233 E 5334156 N, Time (HMS); 18;50;0, DMY; 17.3.2005 (SVP 4).
2; Position; 456198 E 5332224 N, Time (HMS); 22;30;0, DMY; 17.3.2005.
Day 03.19.2005 (Julian day 78);
Bathy filters; Low-Amp = 110, Range; Near Range (Max. Amplitude) = 1 m, Near Range
(Min. Amplitude) = 2 m, Phase Confidence = 40 %, Phase Smooth; Number of Points = 3,
Angle Proximity; Window = 15, Range = 0.1, threshold = 5, Minimum elevation = -90 degree,
Box; Min. Depth = 1 m, Max. Depth = 25 m, Min. Horiz. Range = 0 m, Max. Horiz. Range = 80 m,
Median; Sample Window size = 3, Along track 1; Max. Depth Difference = 3 m, Window Size = 10 m,
Learn Rate = 0.6, Along track 2; Max. Depth Difference = 0.5 m, Window Size = 2 m,
Learn Rate = 0.6, Mean; Window size = 1 m.
Set Filters; Approximate water Depth = 5 m, Maximum Range Required = 80 m, Seabed Variation = Flat, Filter Level = Medium.
Speed of sound; SOS Form; Auxiliary Port, Use of SOS Table; Full ray tracing, Default SOS; 1481.
1; Position; 455822 E 5332255 N, Time (HMS); 19;00;0, DMY; 18.3.2005.
2; Position; 456198 E 5332224 N, Time (HMS); 22;30;0, DMY; 17.3.2005.
3; Position; 465180 E 5332059 N, Time (HMS); 18;00;0, DMY; 19.3.2005.
Day 03.21.2005 (Julian day 80);
Bathy filters; Low-Amp = 110, Range; Near Range (Max. Amplitude) = 2 m, Near Range
(Min. Amplitude) = 4 m, Phase Confidence = 50 %, Phase Smooth; Number of Points = 3,
Angle Proximity; Window = 25, Range = 0.1, threshold = 7, Minimum elevation = -90 degree,
Box; Min. Depth = 3 m, Max. Depth = 40 m, Median; Sample Window size = 3, Along track 1;
Max. Depth Difference = 3 m, Window Size = 5 m, Learn Rate = 0.6, Along track 2;
Max. Depth Difference = 1 m, Window Size = 2 m, Learn Rate = 0.6, Mean; Window size = 1 m.
Set Filters; Approximate water Depth = 5 m, Maximum Range Required = 80 m,
Seabed Variation = Flat, Filter Level = Medium.
Speed of sound; SOS Form; Auxiliary Port, Use of SOS Table; Full ray tracing, Default SOS; 1481.
1; Position; 455822 E 5332255 N, Time (HMS); 19;00;0, DMY; 18.3.2005.
2; Position; 456198 E 5332224 N, Time (HMS); 22;30;0, DMY; 17.3.2005.
3; Position; 465180 E 5332059 N, Time (HMS); 18;00;0, DMY; 19.3.2005.
4; Position; 458858 E 5333511 N, Time (HMS); 18;20;0, DMY; 21.3.2005.
Day 03.24.2005 (Julian day 83);
Bathy filters; Low-Amp = 110, Range; Near Range (Max. Amplitude) = 2 m, Near Range
(Min. Amplitude) = 4 m, Phase Confidence = 45 %, Phase Smooth; Number of Points = 3,
Angle Proximity; Window = 25, Range = 0.1, threshold = 7, Minimum elevation = -90 degree,
Box; Min. Depth = 3 m, Max. Depth = 30 m, Max. Horiz. Range = 60 m, Median;
Sample Window size = 3, Along track 1; Max. Depth Difference = 2 m, Window Size = 5 m,
Learn Rate = 0.6, Along track 2; Max. Depth Difference = 0.5 m, Window Size = 2 m,
Learn Rate = 0.6, Mean; Window size = 1 m.
Set Filters; Approximate water Depth = 5 m, Maximum Range Required = 80 m,
Seabed Variation = Flat, Filter Level = Medium.
Speed of sound; SOS Form; Auxiliary Port, Use of SOS Table; Full ray tracing, Default SOS; 1481.
1; Position; 454066 E 5332807 N, Time (HMS); 21;30;0, DMY; 24.3.2005.
Day 03.25.2005 (Julian day 84);
Bathy filters; Low-Amp = 110, Range; Near Range (Max. Amplitude) = 2 m, Near Range
(Min. Amplitude) = 3 m, Phase Confidence = 50 %, Phase Smooth; Number of Points = 3,
Angle Proximity; Window = 25, Range = 0.1, threshold = 7, Minimum elevation = -90 degree,
Box; Min. Depth = 3 m, Max. Depth = 45 m, Median; Sample Window size = 3, Along track 1;
Max. Depth Difference = 2 m, Window Size = 5 m, Learn Rate = 0.6, Along track 2;
Max. Depth Difference = 0.5 m, Window Size = 2 m, Learn Rate = 0.6, Mean; Window size = 1 m.
Set Filters; Approximate water Depth = 5 m, Maximum Range Required = 80 m,
Seabed Variation = Flat, Filter Level = Medium.
Speed of sound; SOS Form; Auxiliary Port, Use of SOS Table; Full ray tracing, Default SOS; 1481.
1; Position; 452746 E 5333399 N, Time (HMS); 21;00;0, DMY; 25.3.2005.
Day 03.27.2005 (Julian day 86);
Bathy filters; Low-Amp = 110, Range; Near Range (Max. Amplitude) = 2 m, Near Range
(Min. Amplitude) = 4 m, Phase Confidence = 50 %, Phase Smooth; Number of Points = 3,
Angle Proximity; Window = 25, Range = 0.1, threshold = 7, Minimum elevation = -90 degree,
Box; Min. Depth = 1 m, Max. Depth = 15 m, Median; Sample Window size = 3, Along track 1;
Max. Depth Difference = 2 m, Window Size = 5 m, Learn Rate = 0.6, Along track 2;
Max. Depth Difference = 0.5 m, Window Size = 2 m, Learn Rate = 0.6, Mean; Window size = 1 m.
Set Filters; Approximate water Depth = 5 m, Maximum Range Required = 80 m,
Seabed Variation = Flat, Filter Level = Medium.
Speed of sound; SOS Form; Auxiliary Port, Use of SOS Table; Full ray tracing, Default SOS; 1481.
1; Position; 454066 E 5332807 N, Time (HMS); 21;30;0, DMY; 27.3.2005.
FreshwaterBay
Day 03.24.2005 (Julian day 83);
Bathy filters; Low-Amp = 110, Range; Near Range (Max. Amplitude) = 2 m, Near Range
(Min. Amplitude) = 4 m, Phase Confidence = 45 %, Phase Smooth; Number of Points = 3,
Angle Proximity; Window = 25, Range = 0.1, threshold = 7, Minimum elevation = -90 degree,
Box; Min. Depth = 3 m, Max. Depth = 30 m, Max. Horiz. Range = 60 m, Median;
Sample Window size = 3, Along track 1; Max. Depth Difference = 2 m, Window Size = 5 m,
Learn Rate = 0.6, Along track 2; Max. Depth Difference = 0.5 m, Window Size = 2 m,
Learn Rate = 0.6, Mean; Window size = 1 m.
Set Filters; Approximate water Depth = 5 m, Maximum Range Required = 80 m,
Seabed Variation = Flat, Filter Level = Medium.
Speed of sound; SOS Form; Auxiliary Port, Use of SOS Table; Full ray tracing, Default SOS; 1481.
1; Position; 454066 E 5332807 N, Time (HMS); 21;30;0, DMY; 24.3.2005.
Day 03.25.2005 (Julian day 84);
Bathy filters; Low-Amp = 110, Range; Near Range (Max. Amplitude) = 2 m, Near Range
(Min. Amplitude) = 3 m, Phase Confidence = 50 %, Phase Smooth; Number of Points = 3,
Angle Proximity; Window = 25, Range = 0.1, threshold = 7, Minimum elevation = -90 degree,
Box; Min. Depth = 3 m, Max. Depth = 45 m, Median; Sample Window size = 3, Along track 1;
Max. Depth Difference = 2 m, Window Size = 5 m, Learn Rate = 0.6, Along track 2;
Max. Depth Difference = 0.5 m, Window Size = 2 m, Learn Rate = 0.6, Mean; Window size = 1 m.
Set Filters; Approximate water Depth = 5 m, Maximum Range Required = 80 m,
Seabed Variation = Flat, Filter Level = Medium.
Speed of sound; SOS Form; Auxiliary Port, Use of SOS Table; Full ray tracing, Default SOS; 1481.
1; Position; 452746 E 5333399 N, Time (HMS); 21;00;0, DMY; 25.3.2005.
- Process_Date: 20060909
- Process_Step:
-
- Process_Description:
-
The .sxp files outputed from Swath Processor were imported to Grid Processor and exported as text files.
Text files were imported into DMagic and exported as .asc files. Then the .asc files were imported to ArcMap
and converted to an ESRIGRID format.
- Process_Date: 20060922
- Process_Step:
-
- Process_Description:
-
In ArcGIS, The individual swath grids were mosaiced atop adjacent nearshore swaths sequentially.
The nearshore side of each swath was masked to remove far-range and noisy data areas without producing gaps or
exposing lower quality data in the adjacent swath when overlain on the mosaic. Mosaicing was done by manually drawing a
mask around the best possible data for each line. Best possible data was determined subjectively and included the least
no data values as possible in the overlapping areas. Where the swaths overlapped the data in the underlying deeper edge of
the mosaic were overwritten by the values in the masked swath, values were not averaged where overlap occurred, to preserve data texture.
Merging the masked lines (create a mosaic) together using Mosaic To New Raster with the option "First" such that the better lines are on top
and so to avoid averaging overlapping areas (in order to preserve rugosity).
- Process_Date: 20060930
- Spatial_Data_Organization_Information:
-
- Direct_Spatial_Reference_Method: Raster
- Raster_Object_Information:
-
- Raster_Object_Type: Grid Cell
- Row_Count: 3753
- Column_Count: 6952
- Vertical_Count: 1
- Spatial_Reference_Information:
-
- Horizontal_Coordinate_System_Definition:
-
- Planar:
-
- Grid_Coordinate_System:
-
- Grid_Coordinate_System_Name: Universal Transverse Mercator
- Universal_Transverse_Mercator:
-
- UTM_Zone_Number: 10
- Transverse_Mercator:
-
- Scale_Factor_at_Central_Meridian: 0.999600
- Longitude_of_Central_Meridian: -123.000000
- Latitude_of_Projection_Origin: 0.000000
- False_Easting: 500000.000000
- False_Northing: 0.000000
- Planar_Coordinate_Information:
-
- Planar_Coordinate_Encoding_Method: row and column
- Coordinate_Representation:
-
- Abscissa_Resolution: 1.000000
- Ordinate_Resolution: 1.000000
- Planar_Distance_Units: meters
- Geodetic_Model:
-
- Horizontal_Datum_Name: D_WGS_1984
- Ellipsoid_Name: WGS_1984
- Semi-major_Axis: 6378137.000000
- Denominator_of_Flattening_Ratio: 298.257224
- Distribution_Information:
-
- Distributor:
-
- Contact_Information:
-
- Contact_Organization_Primary:
-
- Contact_Organization:
-
United States Geological Survey (USGS)
Coastal and Marine Geology Program (CMGP)
- Contact_Person: Guy R. Cochrane
- Contact_Position: Geophysicist
- Contact_Address:
-
- Address_Type: mailing and physical address
- Address: USGS, 400 Natural Bridges Drive
- City: Santa Cruz
- State_or_Province: CA
- Postal_Code: 95060-5792
- Country: USA
- Contact_Voice_Telephone: (831) 427-4754
- Contact_Facsimile_Telephone: (831) 427-4748
- Contact_Electronic_Mail_Address: gcochrane@usgs.gov
- Distribution_Liability:
-
Please recognize the U.S. Geological Survey (USGS) as the source of
this information.
Although these data have been used by the U.S. Geological Survey,
U.S. Department of the Interior, no warranty expressed or implied
is made by the U.S. Geological Survey as to the accuracy of the
data.
The act of distribution shall not constitute any such warranty,
and no responsibility is assumed by the U.S. Geological Survey in
the use of this data, software, or related materials.
- Metadata_Reference_Information:
-
- Metadata_Date: 2007
- Metadata_Review_Date: 2007
- Metadata_Contact:
-
- Contact_Information:
-
- Contact_Organization_Primary:
-
- Contact_Organization:
-
United States Geological Survey (USGS)
Coastal and Marine Geology Program (CMGP)
- Contact_Person: Guy R. Cochrane
- Contact_Position: Geophysicist
- Contact_Address:
-
- Address_Type: mailing and physical address
- Address: USGS, 400 Natural Bridges Drive
- City: Santa Cruz
- State_or_Province: CA
- Postal_Code: 95060-5792
- Country: USA
- Contact_Voice_Telephone: (831) 427-4754
- Contact_Facsimile_Telephone: (831) 427-4748
- Contact_Electronic_Mail_Address: gcochrane@usgs.gov
- Metadata_Standard_Name:
-
FGDC Content Standards for Digital Geospatial Metadata ("CSDGM version 2")
- Metadata_Standard_Version: FGDC-STD-001-1998
- Metadata_Access_Constraints: none
- Metadata_Use_Constraints: none
Generated by mp version 2.9.2 on Wed Sep 26 13:42:08 2007