GMX_Q04.TIF - U.S. Gulf of Mexico EEZ GLORIA sidescan-sonar data mosaic (4 of 16) (ACEA, 50 m, Clarke1866)

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2011
Title:
GMX_Q04.TIF - U.S. Gulf of Mexico EEZ GLORIA sidescan-sonar data mosaic (4 of 16) (ACEA, 50 m, Clarke1866)
Edition: 1.0
Geospatial_Data_Presentation_Form: remote-sensing image
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2010-1332
Publication_Information:
Publication_Place: Pacific Coastal and Marine Science Center, Menlo Park, CA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: <https://pubs.usgs.gov/of/2010/1332/gloria_data/gomex/gmx_q04.zip>
Larger_Work_Citation:
Citation_Information:
Originator: Valerie F. Paskevich
Originator: Florence L. Wong
Originator: John J. O'Malley
Originator: Andrew J. Stevenson
Originator: Christina E. Gutmacher
Publication_Date: 2011
Title:
GLORIA Sidescan-Sonar Imagery for Parts of the U.S. Exclusive Economic Zone and Adjacent Areas
Edition: 1.0
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2010-1332
Publication_Information:
Publication_Place: Pacific Coastal and Marine Science Center, Menlo Park, CA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: <https://pubs.usgs.gov/of/2010/1332/>
Description:
Abstract:
During February 1982 and again from August 7 to October 22, 1985 the U.S. Geological Survey (USGS) conducted four cruises to cover the U.S. Gulf of Mexico Continental Margin Exclusive Economic Zone (EEZ) seaward of the continental shelf edge. As in earlier EEZ reconnaissance surveys, the USGS utilized the GLORIA (Geological LOng-Range Inclined Asdic) sidescan-sonar system to complete the geologic mapping. The collected GLORIA data were processed and digitally mosaicked to produce continuous imagery of the seafloor. A total of 16 digital mosaics of a 2 degree by 2 degree (or smaller) area with a 50-meter pixel resolution were completed for the Gulf of Mexico region.
Purpose:
This remote sensing image of the seafloor is 1 of 16 mosaics created from the Gulf of Mexico GLORIA sidescan-sonar data.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19820202, 19850807, 19850905, 19851002
Ending_Date: 19820224, 19850903, 19850929, 19851022
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -88.023262
East_Bounding_Coordinate: -85.977330
North_Bounding_Coordinate: 26.003555
South_Bounding_Coordinate: 23.990473
Keywords:
Theme:
Theme_Keyword_Thesaurus: General
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: Woods Hole Science Center
Theme_Keyword: WHSC
Theme_Keyword: Geological LOng-Range Inclined Asdic
Theme_Keyword: GLORIA
Theme_Keyword: GeoTIFF image
Theme_Keyword: grey scale image
Theme_Keyword: backscatter
Theme_Keyword: acoustic reflectivity
Theme_Keyword: marine geology
Theme_Keyword: sidescan-sonar mosaic
Theme_Keyword: Exclusive Economic Zone
Theme_Keyword: EEZ
Theme_Keyword: WHSC serial number 82005
Theme_Keyword: WHSC serial number 85027
Theme_Keyword: WHSC serial number 85028
Theme_Keyword: WHSC serial number 85034
Theme_Keyword: WHSC cruise identifier 82FARN-7
Theme_Keyword: WHSC cruise identifier FRNL 85 LEG 1
Theme_Keyword: WHSC cruise identifier FRNL 85 LEG 2
Theme_Keyword: WHSC cruise identifier FRNL 85 LEG 3
Theme_Keyword: Infobank identifier F-7-82-GM
Theme_Keyword: Infobank identifier F-1-85-GM
Theme_Keyword: Infobank identifier F-2-85-GM
Theme_Keyword: Infobank identifier F-3A-85-GM
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: oceans and estuaries
Theme_Keyword: oceans and coastal
Theme_Keyword: geoscientificInformation
Theme_Keyword: imageryBaseMapsEarthCover
Theme:
Theme_Keyword_Thesaurus:
NASA/Global Change Master Directory (GCMD) Earth Science Keywords, Version 6.0.0.0.0
Theme_Keyword: Oceans > Ocean Acoustics > Acoustic Reflectivity
Theme:
Theme_Keyword_Thesaurus: NASA/Global Change Master Directory (GCMD) Instrument Keywords
Theme_Keyword: ACOUSTIC RECEIVERS
Theme_Keyword: GLORIA > Geological Long-Range Inclined ASDIC
Theme_Keyword: SIDE-SCAN SONAR
Place:
Place_Keyword_Thesaurus: General
Place_Keyword: Gulf of Mexico
Place_Keyword: continental slope
Place_Keyword: continental rise
Place_Keyword: continental margin
Place_Keyword: continental shelf
Place_Keyword: Mississippi Canyon and Fan
Place_Keyword: Sigsbee Escarpment
Place_Keyword: Florida Escarpment
Place:
Place_Keyword_Thesaurus:
NASA/Global Change Master Directory (GCMD) Location Keywords, Version 6.0.0.0.0
Place_Keyword: Ocean > Atlantic Ocean
Place_Keyword: Ocean > Atlantic Ocean > North Atlantic Ocean
Place_Keyword: Ocean > Atlantic Ocean > North Atlantic Ocean > Gulf Of Mexico
Access_Constraints: None
Use_Constraints:
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Florence Wong
Contact_Address:
Address_Type: mailing and physical address
Address: 345 Middlefield Road MS 999
City: Menlo Park
State_or_Province: CA
Postal_Code: 94025
Country: USA
Contact_Voice_Telephone: (650) 329-5327
Contact_Facsimile_Telephone: (650) 329-5198
Contact_Electronic_Mail_Address: fwong@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name:
<https://pubs.usgs.gov/of/2010/1332/gloria_data/gomex/browse/gmx_q04-thumb.gif>
Browse_Graphic_File_Description:
Thumbnail image showing an overview of the Gulf of Mexico GLORIA mosaic 4.
Browse_Graphic_File_Type: GIF
Browse_Graphic:
Browse_Graphic_File_Name:
<https://pubs.usgs.gov/of/2010/1332/gloria_data/gomex/browse/gmx_q04.gif>
Browse_Graphic_File_Description:
Browse image showing an overview of the Gulf of Mexico GLORIA mosaic 4.
Browse_Graphic_File_Type: GIF
Data_Set_Credit:
The U.S. Geological Survey (USGS) must be referenced as the originator of the dataset in any future products or research derived from these data.
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535
Cross_Reference:
Citation_Information:
Originator: EEZ-SCAN 85 Scientific Staff
Publication_Date: 1987
Title:
Atlas of the U.S. Exclusive Economic Zone, Gulf of Mexico and Eastern Caribbean Areas
Edition: 1.0
Series_Information:
Series_Name: Miscellaneous Investigation Series
Issue_Identification: I-1864-A,B
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details: 160 p.
Cross_Reference:
Citation_Information:
Originator: J.V. Gardner (editor)
Originator: M.E. Field (editor)
Originator: D.C. Twichell (editor)
Publication_Date: 2011
Title: Geology of the United States Seafloor: The View from GLORIA
Edition: 1.0
Publication_Information:
Publication_Place: Cambridge, U.K.
Publisher: Cambridge University Press
Cross_Reference:
Citation_Information:
Originator: P.S. Chavez Jr.
Publication_Date: 1986
Title: Processing Techniques for Digital Sonar Images from GLORIA
Series_Information:
Series_Name: Photogrammetric Engineering and Remote Sensing
Issue_Identification: Vol. 52, No. 8, August 1986, p. 1133-1145
Publication_Information:
Publication_Place: Falls Church, VA 22046
Publisher: American Society for Photogrammetry and Remote Sensing
Cross_Reference:
Citation_Information:
Originator: P.S. Chavez Jr.
Publication_Date: 1984
Title: U.S. Geological Survey mini image processing system (MIPS)
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 84-880
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Cross_Reference:
Citation_Information:
Originator: V. Paskevich
Publication_Date: 1996
Title:
Digital mosaics of the GLORIA sidescan-sonar data of the Gulf of Mexico
Edition: 1.0
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 96-657
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Other_Citation_Details: 1 CD-ROM
Cross_Reference:
Citation_Information:
Originator: V. Paskevich
Publication_Date: 2000
Title:
Gulf of Mexico GLORIA sidescan-sonar Geologic Interpretation: ArcView Data Coverages
Edition: 1.0
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 00-019
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Other_Citation_Details: 1 CD-ROM
Online_Linkage: <https://pubs.usgs.gov/of/of00-019/>
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: There are no attributes associated with a GeoTIFF image.
Logical_Consistency_Report: not applicable
Completeness_Report:
All available imagery were used to create this mosaic. Data were acquired during several cruises using the 6.5 kHz GLORIA sidescan-sonar system and a 45-km total swath width.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Primary navigational control for this survey was by Loran-C supplemented by satellite navigation. Accuracy of location of the navigation fixes is estimated to be better than 100 meters.
Lineage:
Source_Information:
Type_of_Source_Media: digital tape media
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19820202, 19850807, 19850905, 19851002
Ending_Date: 19820224, 19850903, 19850929, 19851022
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: GLORIA pass data
Source_Contribution:
GLORIA data were logged to magnetic tape in 6-hour portions referred to as "passes". Each completed pass contained a maximum 720 "lines" of data at the usual 30-second pulse repetition rate. Each line consisted of a 1024 byte record that contained the port and starboard returns from a single ping as well as header information. These "passes" contained geometric and radiometric distortions which had to be corrected before they could be digitally mosaicked.
Process_Step:
Process_Description:
The GLORIA "passes" necessary to complete the mosaic were retrieved from magnetic tape. Navigation data were merged into the individual "passes" to update the header information with depth and location coordinates.
Source_Used_Citation_Abbreviation: GLORIA pass data
Process_Date: 1986
Source_Produced_Citation_Abbreviation: "pass".mrg
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700
Contact_Facsimile_Telephone: (508) 457-2310
Process_Step:
Process_Description:
Slant-Range correction, the first of two geometric corrections, was applied to the "passes". This processing step corrects slant-range to ground-range and removes the water column. Slant-range error is mislocation of pixels in the cross-track direction compared to their proper location on a map. This error occurs due to the way that the sidescan-sonar senses distance to a target. After the slant-range correction has been made, the across-track location of targets is accurate.
Source_Used_Citation_Abbreviation: "pass".mrg
Process_Date: 1986
Source_Produced_Citation_Abbreviation: "pass".slr
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700
Contact_Facsimile_Telephone: (508) 457-2310
Process_Step:
Process_Description:
A series of radiometric corrections were then applied to the "passes". The first enhancement was used to correct for shading problems that occur in the across-track direction and are a function of attenuation in range distance and transmitter power build-up.
Source_Used_Citation_Abbreviation: "pass".slr
Process_Date: 1986
Source_Produced_Citation_Abbreviation: "pass".shd
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700
Contact_Facsimile_Telephone: (508) 457-2310
Process_Step:
Process_Description:
The next radiometric enhancement was applied in a two-part filtering process to remove the striped noise that can be found in side-scan sonar image in the across-track direction. The noise was removed by applying two separate boxcar filters: (1) a high-pass filter that will contain the high-frequency component of the image without the noise; and (2) a low-pass filter that will include the low-frequency component of the image without the noise.
Source_Used_Citation_Abbreviation: "pass".shd
Process_Date: 1986
Source_Produced_Citation_Abbreviation: "pass".hpf
Source_Produced_Citation_Abbreviation: "pass".lpf
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700
Contact_Facsimile_Telephone: (508) 457-2310
Process_Step:
Process_Description:
The two filtered images were combined to recreate an image similar to the original but without the noise.
Source_Used_Citation_Abbreviation: "pass".hpf
Source_Used_Citation_Abbreviation: "pass".lpf
Process_Date: 1986
Source_Produced_Citation_Abbreviation: "pass".wco
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700
Contact_Facsimile_Telephone: (508) 457-2310
Process_Step:
Process_Description:
The second geometric correction, aspect-ratio distortion, was applied to the "passes". The aspect-ratio distortion was removed by using the navigation data to compute the distance traveled by the ship. Given the distance traveled, the number of pixels (each representing 50 m) required along the particular segment was calculated. The original pixels were then duplicated the appropriate number of times to fill the space with 50-meter pixels and thus achieve a 1:1 ratio between along-track and across-track distances. The practice of duplication to create a square 50-meter pixel size was followed so that information in the across-track direction would not have to be omitted.
Source_Used_Citation_Abbreviation: "pass".wco
Process_Date: 1986
Source_Produced_Citation_Abbreviation: "pass".vel
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700
Contact_Facsimile_Telephone: (508) 457-2310
Process_Step:
Process_Description:
The final enhancement, a 2 by 2 low-pass filter for smoothing the images, was applied to the "passes". Because the delta velocity correction typically stretches the imagery 1:2.5 times, a 2 by 2 low-pass filter is applied to the image to smooth and reduce the blockiness that results from the line duplication. The 2 by 2 low-pass filter smoothes out the blockiness introduced into the image without over smoothing and blurring the image.
Source_Used_Citation_Abbreviation: "pass".vel
Process_Date: 1986
Source_Produced_Citation_Abbreviation: "pass".2b2
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700
Contact_Facsimile_Telephone: (508) 457-2310
Process_Step:
Process_Description:
After the geometric and radiometric corrections were applied, the data were ready for the digital mosaicking. The necessary segments of processed data, each representing about 6-hours of data acquisition, were spliced end-to-end to make continuous swaths for portions of the tracklines where the ship's heading remained generally constant and passed through the mosaic area. The segments were tone-matched by adjusting the average brightness to minimize the tonal contrast at the seams where they were joined. Latitude, longitude, and heading were determined along the trackline of each continuous segment of data at the start, end, and two intermediate points. These four control points, with eight additional points that were computed for the edges of the image segment, were used to position the segment within the map grid.
Source_Used_Citation_Abbreviation: "pass".2b2
Process_Date: 1986
Source_Produced_Citation_Abbreviation: gmx_q04_line"n"
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700
Contact_Facsimile_Telephone: (508) 457-2310
Process_Step:
Process_Description:
When the individual trackline segments had been georeferenced, the next step was to digitally stencil the segments to remove unwanted data (i.e. noise). Interactively, a line was drawn on a video display outlining the portion of each image segment to be retained while comparing it to adjacent segments. Then all pixels outside the area enclosed by the line were converted to zero values, thereby retaining only that portion of the image desired. Finally, each stenciled segment was mosaicked to adjacent segments, sequentially building the composite map. In this way a digital file was created with the desired map projection for each imagery sheet (mosaic).
Source_Used_Citation_Abbreviation: gmx_q04_line"n"
Process_Date: 1986
Source_Produced_Citation_Abbreviation: gmx_q04
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700
Contact_Facsimile_Telephone: (508) 457-2310
Process_Step:
Process_Description:
A linear contrast stretch was applied to the image to increase the dynamic range of the data and enhance the image for viewing. Original digital values of 0 (no data) surrounding the mosaic data were changed to 127. These enhancements were applied to prepare the image for printing.
Source_Used_Citation_Abbreviation: gmx_q04
Process_Date: 1986
Source_Produced_Citation_Abbreviation: gmx_q04
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700
Contact_Facsimile_Telephone: (508) 457-2310
Process_Step:
Process_Description:
The binary image files of the GLORIA mosaics were imported into a PCI database file allowing the images to be georeferenced. The image georeference report was saved for future reference.
Source_Used_Citation_Abbreviation: gmx_q04.bin
Process_Date: 20020624
Source_Produced_Citation_Abbreviation: gmx_q04.pix
Source_Produced_Citation_Abbreviation: gmx_q04-georep.txt
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Valerie Paskevich
Contact_Organization: U.S. Geological Survey
Contact_Position: Information Specialist / GIS Coordinator, retired
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700
Contact_Facsimile_Telephone: (508) 457-2310
Process_Step:
Process_Description:
The GLORIA image was exported from the PCI database file to a GeoTIFF image with an accompanying world file.
Source_Used_Citation_Abbreviation: gmx_q04.pix
Process_Date: 20020624
Source_Produced_Citation_Abbreviation: gmx_q04.tif
Source_Produced_Citation_Abbreviation: gmx_q04.tfw
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Valerie Paskevich
Contact_Organization: U.S. Geological Survey
Contact_Position: Information Specialist / GIS Coordinator, retired
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700
Contact_Facsimile_Telephone: (508) 457-2310
Process_Step:
Process_Description:
The image was modified to flood-fill the background 127 (grey) data value to 255 (white). After modification, the header portion of the image was updated to restore the georeferencing information.
Source_Used_Citation_Abbreviation: gmx_q04.tif
Source_Used_Citation_Abbreviation: gmx_q04.tfw
Process_Date: 20020624
Source_Produced_Citation_Abbreviation: gmx_q04.tif
Source_Produced_Citation_Abbreviation: gmx_q04.tfw
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Valerie Paskevich
Contact_Organization: U.S. Geological Survey
Contact_Position: Information Specialist / GIS Coordinator, retired
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700
Contact_Facsimile_Telephone: (508) 457-2310
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 4381
Column_Count: 4180
Vertical_Count: 1
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Albers Conical Equal Area
Albers_Conical_Equal_Area:
Standard_Parallel: 29.500000
Standard_Parallel: 45.500000
Longitude_of_Central_Meridian: -87.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 0.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 50.000000
Ordinate_Resolution: 50.000000
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6378206.400000
Denominator_of_Flattening_Ratio: 294.978698
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
There are no attributes associated with a GeoTIFF image. associated with a GeoTIFF 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). These data have been radiometrically enhanced for better viewing.
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700
Contact_Facsimile_Telephone: (508) 457-2310
Resource_Description: Downloadable Data
Distribution_Liability:
Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. 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.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: TIFF
Format_Specification: GeoTIFF
Format_Information_Content:
A zip archive containing the GeoTIFF image, world file, browse graphics and metadata files.
File_Decompression_Technique: zip archive
Transfer_Size: 8.05
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <https://pubs.usgs.gov/of/2010/1332/gloria_data/gomex/gmx_q04.zip>
Access_Instructions: Data are available for download on the World Wide Web (WWW).
Offline_Option:
Offline_Media: DVD-ROM
Recording_Capacity:
Recording_Density: 4.75
Recording_Density_Units: Gbytes
Recording_Format: UDF
Fees: None
Technical_Prerequisites:
The sidescan-sonar mosaic is available as a GeoTIFF image with accompanying world file and georeference report. To utilize this data, the user must have an image viewer, image processing or GIS software package capable of importing a GeoTIFF image. If the georeferencing information cannot be imported, the user may wish to obtain the georeference information contained in a separate file included in the zip file.
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 345 Middlefield Road MS 999
City: Menlo Park
State_or_Province: CA
Postal_Code: 94025
Country: USA
Contact_Voice_Telephone: (650) 329-5078
Contact_Facsimile_Telephone: (650) 329-5190
Resource_Description: Downloadable Data
Distribution_Liability:
Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. 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.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: TIFF
Format_Specification: GeoTIFF
Format_Information_Content:
A zip archive containing the GeoTIFF image, world file, browse graphics and metadata files.
File_Decompression_Technique: zip archive
Transfer_Size: 8.05
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <https://pubs.usgs.gov/of/2010/1332/gloria_data/gomex/gmx_q04.zip>
Access_Instructions: Data are available for download on the World Wide Web (WWW).
Offline_Option:
Offline_Media: DVD-ROM
Recording_Capacity:
Recording_Density: 4.75
Recording_Density_Units: Gbytes
Recording_Format: UDF
Fees: None
Technical_Prerequisites:
The sidescan-sonar mosaic is available as a GeoTIFF image with accompanying world file and georeference report. To utilize this data, the user must have an image viewer, image processing or GIS software package capable of importing a GeoTIFF image. If the georeferencing information cannot be imported, the user may wish to obtain the georeference information contained in a separate file included in the zip file.
Metadata_Reference_Information:
Metadata_Date: 20050616
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Valerie Paskevich
Contact_Position: Information Specialist / GIS Coordinator, retired
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700
Contact_Facsimile_Telephone: (508) 457-2310
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Generated by mp version 2.9.8 on Thu Mar 31 11:39:11 2011