U.S. Geological Survey
2007
Autonomous Surface Vehicle Sidescan-sonar mosaic from St Vincent Bar, St. George Sound, Florida (ASV176.TIF)
1.0
remote-sensing image
Open-File Report
2006-1381
Woods Hole Coastal and Marine Science Center, Woods Hole, Massachusetts
U.S. Geological Survey, Coastal and Marine Geology Program
https://doi.org/10.3133/ofr20061381
http://pubs.usgs.gov/of/2006/1381/GIS/raster/asv/asv176.zip
David C. Twichell
Brian D. Andrews
H. Lee Edmiston
William R. Stevenson
2007
Geophysical Mapping of oyster habitats in a shallow estuary; Apalachicola Bay, Florida
1.0
Open-File Report
2006-1381
Reston, VA
U.S. Geological Survey
http://pubs.usgs.gov/of/2006/1381/
These data were collected under a cooperative mapping program between the U.S. Geological Survey (USGS), the National Oceanic and Atmospheric Administration Coastal Services Center (NOAA\CSC), and the Apalachicola National Estuarine Research Reserve (NERR). The primary objectives of this program were to collect marine geophysical data to develop a suite of seafloor maps to better define the extent of oyster habitats, the overall seafloor geology of the bay and provide updated information for management of this resource. In addition to their value for management of the bay's oyster resources, the maps also provide a geologic framework for scientific research and the public.
High-resolution bathymetry, backscatter intensity, and seismic profile data were collected over a 230 square kilometers of the floor of the bay. The study focused on the Apalachicola Bay and Western St. George Sound portions of the estuary mostly in depths > 2.0 meters.
These data are high-resolution acoustic backscatter measurements collected over the central part of St. Vincent Bar in Apalachicola Bay, Florida. These data were collected using the Autonomous Surface Vessel (ASV) IRIS primarily over known oyster bars in waters less than 1-2 meters deep.
20060625
ground condition
None planned
-85.058344
-85.045605
29.656682
29.638461
USGS Metadata Identifier
USGS:439ba694-ca3e-42e1-9974-6893e020715e
None
U.S. Geological Survey
USGS
Coastal and Marine Geology Program
CMGP
Woods Hole Science Center
WHSC
Seafloor
Marine Geology
GeoTIFF image
field activity serial number 06001
Sidescan
Sidescan-Sonar
EdgeTech
EdgeTech 4200 FS
ASV
IRIS
Autonomous Surface Vehicle
ISO 19115 Topic Category
oceans
imageryBaseMapsEarthCover
geoscientificInformation
USGS Thesaurus
sea-floor acoustic reflectivity
image mosaics
sidescan sonar
marine geophysics
geospatial datasets
None
Apalachicola Bay
Florida
Apalachicola National Estuarine Research Reserve
Gulf of Mexico
United States
None
Seafloor
sea floor
None
2006
None
Data are not intended for navigational use.
These data should not be used at resolutions for which it is not intended.
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.
Brian Andrews
U.S. Geological Survey
Geographer
mailing and physical address
384 Woods Hole Rd
Woods Hole
MA
02543-1598
USA
508-548-8700 x2348
508-457-2310
bandrews@usgs.gov
http://pubs.usgs.gov/of/2006/1381/GIS/thumbnails/asv176.jpg
grey-scale image of sidescan sonar mosaic
JPEG
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.2.1350
Danforth, W.W.
1997
Xsonar/ShowImage: A complete system for rapid sidescan-sonar processing and display
1.0
Open-File Report
97-686
Reston, VA
U.S. Geological Survey
https://pubs.er.usgs.gov/publication/ofr97686
Information unavailable from original metadata.
Although both the 100 kHz and 400 kHz frequency data were collected, only the high frequency 400 kHz data were processed and included in this mosaic. Small differences in contrast stretch (DN values) exist because of variations in sea and weather conditions on each survey day.
The ASV used RTK-GPS for navigation. RTK-GPS is assumed to be accurate within 1-2 meters. All GPS/DGPS data are referenced to WGS84. The sidescan-sonar transducers are mounted on a metal frame between the two pontoons about 0.5m below water surface directly below the GPS antenna.
The sidescan-sonar data were acquired with a EdgeTech 4200 FS dual-frequency sidescan-sonar system. The EdgeTech 4200 operates in a frequency range of 100 and 400 kHz. Data were collected and logged to onboard in .jsf format using EdgeTech JStar acquisition software. All jsf files for each Julian day were imported to Xsonar and converted to Xsonar format using the 400 kHz channel. Each file was corrected for slant range and beam pattern corrections as described in Danforth (1997). The individual line files were mosaiced in Xsonar with a range cutoff of 25m. The composite mosaic was exported as a GeoTIFF image, with an associated world file.
200609
Brian Andrews
U.S. Geological Survey
Geographer
mailing and physical address
384 Woods Hole Rd.
Woods Hole
MA
02543-1598
USA
508-548-8700 x2348
508-457-2310
bandrews@usgs.gov
Edits to the metadata were made to fix any errors that MP v 2.9.32 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). Added an online link to the cross-reference. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent.
20160628
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
mailing and physical address
384 Woods Hole Rd.
Woods Hole
MA
02543
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
USGS Thesaurus keywords added to the keyword section.
20180720
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Crossref DOI link was added as the first link in the metadata.
20191118
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Added keywords section with USGS persistent identifier as theme keyword.
20200908
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Raster
Pixel
2000
1200
1
Universal Transverse Mercator
16
0.999600
-87.000000
0.000000
500000.000000
0.000000
row and column
1.000000
1.000000
meters
D_WGS_1984
WGS_1984
6378137.000000
298.257224
There are no attributes associated with a GeoTIFF image. Image pixel values contain acoustic reflectivity values normalized to an 8-bit data range (0-255). Low-backscatter is represented by dark tones (low values) and high-backscatter is represented by bright tones (high values).
U.S. Geological Survey
Brian Andrews
U.S. Geological Survey
Geographer
mailing and physical address
384 Woods Hole Rd.
Woods Hole
MA
02543-1598
USA
508-548-8700 x2348
508-457-2310
bandrews@usgs.gov
Downloadable Data
Although this data set has been used by the U.S. Geological Survey (USGS), no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials.
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
TIFF
ArcGIS 9.2
GeoTIFF
File contains sidescan-sonar imagery data collected in the Apalachicola Bay, Florida
zip
0.6
http://pubs.usgs.gov/of/2006/1381/GIS/raster/asv/asv176.zip
Data can be downloaded via the World Wide Web (WWW)
DVD-ROM
4.75
Gbytes
UDF
None
These data are available in GeoTIFF format. The user must have software capable of viewing a GeoTIFF data file.
20240318
U.S. Geological Survey
Brian Andrews
Geographer
mailing and physical address
384 Woods Hole Rd.
Woods Hole
MA
02543-1598
USA
508-548-8700 x2348
508-457-2310
whsc_data_contact@usgs.gov
The metadata contact email address is a generic address in the event the person is no longer with USGS. (updated on 20240318)
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time
None
None