GAK_250M_LCC_WGS84.TIF - Gulf of Alaska U.S. EEZ GLORIA sidescan-sonar composite mosaic (LCC, 250 m, WGS84)
Metadata also available as - [Questions & Answers] - [Parseable text]
Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator: U.S. Geological Survey
- Publication_Date: 2011
- Title:
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GAK_250M_LCC_WGS84.TIF - Gulf of Alaska U.S. EEZ GLORIA sidescan-sonar composite mosaic (LCC, 250 m, WGS84)
- Edition: 1.0
- Geospatial_Data_Presentation_Form: remote-sensing image
- Series_Information:
-
- Series_Name: Open-File Report
- Issue_Identification: 2010-1332
- Publication_Information:
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- Publication_Place: Pacific Coastal and Marine Science Center, Menlo Park, CA
- Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
- Online_Linkage:
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<https://pubs.usgs.gov/of/2010/1332/gloria_data/gulf_of_alaska/composite/gak_250m_lcc_wgs84.zip>
- Larger_Work_Citation:
-
- Citation_Information:
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- 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:
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GLORIA Sidescan-Sonar Imagery for Parts of the U.S. Exclusive Economic Zone and Adjacent Areas
- Edition: 1.0
- Series_Information:
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- Series_Name: Open-File Report
- Issue_Identification: 2010-1332
- Publication_Information:
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- 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:
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- Abstract:
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The Gulf of Alaska U.S. EEZ GLORIA digital sidescan-sonar mosaic covers about 806,000 square kilometers (sq km) of sea-floor. The mosaic shows the sea-floor morphology from Uminak Pass to Dixon Entrance, from the shelf break seaward to about 400 km. An additional 70-km-wide swath was imaged along the British Columbia margin to follow the trace of the Queen Charlotte Fault south of the Dixon Entrance. Major features visible on the mosaic include continental-margin deformation structures and submarine-channel systems. 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 sea-floor. A total of 30 digital mosaics with a 50-meter pixel resolution were assembled to complete the Gulf of Alaska overview mosaic.
- Purpose:
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This remote sensing image of the sea-floor is a reduced-resolution (250-meter) composite mosaic of the 30 mosaics created from the Gulf of Alaska U.S. EEZ GLORIA sidescan-sonar data.
- Time_Period_of_Content:
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- Time_Period_Information:
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- Range_of_Dates/Times:
-
- Beginning_Date: 19860624, 19880706, 19880805, 19890516, 19890614
- Ending_Date: 19860703, 19880802, 19880831, 19890612, 19890710
- Currentness_Reference: ground condition
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: None planned
- Spatial_Domain:
-
- Bounding_Coordinates:
-
- West_Bounding_Coordinate: -166.307494
- East_Bounding_Coordinate: -125.485934
- North_Bounding_Coordinate: 60.006665
- South_Bounding_Coordinate: 50.013922
- Keywords:
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- 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: Western Coastal and Marine Geology
- Theme_Keyword: WCMG
- Theme_Keyword: Geological LOng-Range Inclined Asdic
- Theme_Keyword: GLORIA
- Theme_Keyword: GeoTIFF image
- Theme_Keyword: grey scale image
- Theme_Keyword: sidescan-sonar mosaic
- Theme_Keyword: composite mosaic
- Theme_Keyword: backscatter
- Theme_Keyword: acoustic reflectivity
- Theme_Keyword: marine geology
- Theme_Keyword: 250-meter
- Theme_Keyword: Lambert Conformal Conic
- Theme_Keyword: Exclusive Economic Zone
- Theme_Keyword: EEZ
- Theme_Keyword: Infobank identifier F-8-88-AA
- Theme_Keyword: Infobank identifier F-1-86-GA
- Theme_Keyword: Infobank identifier F-6-89-GA
- Theme_Keyword: Infobank identifier F-7-89-EG
- Theme_Keyword: Infobank identifier F-9-88-WG
- 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:
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- 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:
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- Place_Keyword_Thesaurus: General
- Place_Keyword: Alaska
- Place_Keyword: Gulf of Alaska
- Place_Keyword: Aleutian Trench
- Place_Keyword: Aleutian Abyssal Plain
- Place_Keyword: Surveyor Channel
- Place_Keyword: Chirikof Channel
- Place_Keyword: Kodiak-Bowie seamount chain
- Place_Keyword: Alaskan Abyssal Plain
- Place_Keyword: Yakutat Margin
- Place_Keyword: British Columbia Margin
- Place_Keyword: Queen Charlotte Fault
- Place:
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- Place_Keyword_Thesaurus: NASA/Global Change Master Directory (GCMD) Place Keywords
- Place_Keyword: Ocean > Pacific Ocean
- Place_Keyword: Ocean > Pacific Ocean > North Pacific Ocean
- Place_Keyword: Ocean > Pacific Ocean > North Pacific Ocean > Gulf Of Alaska
- Access_Constraints: None
- Use_Constraints:
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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:
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- 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
- Browse_Graphic:
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- Browse_Graphic_File_Name:
-
<https://pubs.usgs.gov/of/2010/1332/gloria_data/gulf_of_alaska/composite/browse/gak_250m_lcc_wgs84-thumb.gif>
- Browse_Graphic_File_Description:
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Thumbnail image showing an overview of the Gulf of Alaska U.S. EEZ GLORIA composite mosaic.
- Browse_Graphic_File_Type: GIF
- Browse_Graphic:
-
- Browse_Graphic_File_Name:
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<https://pubs.usgs.gov/of/2010/1332/gloria_data/gulf_of_alaska/composite/browse/gak_250m_lcc_wgs84.gif>
- Browse_Graphic_File_Description:
-
Browse image showing an overview of the Gulf of Alaska U.S. EEZ GLORIA composite mosaic.
- Browse_Graphic_File_Type: GIF
- Data_Set_Credit:
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Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. 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:
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Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535
- Cross_Reference:
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- Citation_Information:
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- Originator: J.V. Gardner (editor)
- Originator: M.E. Field (editor)
- Originator: D.C. Twichell (editor)
- Publication_Date: 1996
- Title: Geology of the United States Seafloor: The View from GLORIA
- Edition: 1.0
- Publication_Information:
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- Publication_Place: Cambridge, U.K.
- Publisher: Cambridge University Press
- Cross_Reference:
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- Citation_Information:
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- Originator: P.S. Chavez Jr.
- Publication_Date: 1986
- Title: Processing Techniques for Digital Sonar Images from GLORIA
- Series_Information:
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- Series_Name: Photogrammetric Engineering and Remote Sensing
- Issue_Identification: Vol. 52, No. 8, August 1986, p. 1133-1145
- Publication_Information:
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- Publication_Place: Falls Church, VA 22046
- Publisher: American Society for Photogrammetry and Remote Sensing
- Cross_Reference:
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- Citation_Information:
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- Originator: P.S. Chavez Jr.
- Publication_Date: 1984
- Title: U.S. Geological Survey mini image processing system (MIPS)
- Series_Information:
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- Series_Name: Open-File Report
- Issue_Identification: 84-880
- Publication_Information:
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- Publication_Place: Reston, VA
- Publisher: U.S. Geological Survey
- Data_Quality_Information:
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- Attribute_Accuracy:
-
- Attribute_Accuracy_Report: There are no attributes associated with a GeoTIFF image.
- Logical_Consistency_Report: not applicable
- Completeness_Report:
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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:
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- Horizontal_Positional_Accuracy:
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- Horizontal_Positional_Accuracy_Report:
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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:
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- Type_of_Source_Media: disc
- Source_Time_Period_of_Content:
-
- Time_Period_Information:
-
- Range_of_Dates/Times:
-
- Beginning_Date: 19860624, 19880706, 19880805, 19890516, 19890614
- Ending_Date: 19860703, 19880802, 19880831, 19890612, 19890710
- Source_Currentness_Reference: ground condition
- Source_Citation_Abbreviation: Gulf of Alaska U.S. EEZ GLORIA mosaics 31-60
- Source_Contribution:
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The 30 completed 50-meter mosaics were combined to create an Lambert Conic Conformal (LCC) Conic projection, 250-meter composite overview.
- Process_Step:
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- Process_Description:
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An empty PCI database for the full extent of the Gulf of Alaska U.S. EEZ GLORIA was defined. The imagery database was defined with an Lambert Conic Conformal (LCC) Conic projection at a resolution of 250-meters. Standard parallels of 50 and 59 and a central longitude of -144 and a central latitude of 55 were selected with a WGS84 spheroid.
- Process_Date: 20070827
- Source_Produced_Citation_Abbreviation: gak_250m_lcc_wgs84.pix
- Process_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
- Process_Step:
-
- Process_Description:
-
Using the PCI Geomatics tool GCPworks, the 30 individual 50-meter mosaics were combined to create a composite overview of the Gulf of Alaska U.S. EEZ GLORIA data at a resolution of 250-meters. The individual full-resolution GLORIA mosaics with the white flood-filled background were mosaiced together to create a single reduced-resolution composite mosaic for the Gulf of Alaska. Individual mosaics were "dropped" into the composite database. No rubber sheeting or geometric corrections were applied to the mosaics. However, some mosaics were radiometrically enhanced to reduce the effect of the individual square boundaries and produce a more uniform overview image. The individual 30 mosaics were combined using a bi-linear resampling mode to reduce noise and blockiness.
- Source_Used_Citation_Abbreviation: gak_q31.tif
- Source_Used_Citation_Abbreviation: gak_q32.tif
- Source_Used_Citation_Abbreviation: gak_q33.tif
- Source_Used_Citation_Abbreviation: gak_q34.tif
- Source_Used_Citation_Abbreviation: gak_q35.tif
- Source_Used_Citation_Abbreviation: gak_q36.tif
- Source_Used_Citation_Abbreviation: gak_q37.tif
- Source_Used_Citation_Abbreviation: gak_q38.tif
- Source_Used_Citation_Abbreviation: gak_q39.tif
- Source_Used_Citation_Abbreviation: gak_q40.tif
- Source_Used_Citation_Abbreviation: gak_q41.tif
- Source_Used_Citation_Abbreviation: gak_q42.tif
- Source_Used_Citation_Abbreviation: gak_q43.tif
- Source_Used_Citation_Abbreviation: gak_q44.tif
- Source_Used_Citation_Abbreviation: gak_q45.tif
- Source_Used_Citation_Abbreviation: gak_q46.tif
- Source_Used_Citation_Abbreviation: gak_q47.tif
- Source_Used_Citation_Abbreviation: gak_q48.tif
- Source_Used_Citation_Abbreviation: gak_q49.tif
- Source_Used_Citation_Abbreviation: gak_q50.tif
- Source_Used_Citation_Abbreviation: gak_q51.tif
- Source_Used_Citation_Abbreviation: gak_q52.tif
- Source_Used_Citation_Abbreviation: gak_q53.tif
- Source_Used_Citation_Abbreviation: gak_q54.tif
- Source_Used_Citation_Abbreviation: gak_q55.tif
- Source_Used_Citation_Abbreviation: gak_q56.tif
- Source_Used_Citation_Abbreviation: gak_q57.tif
- Source_Used_Citation_Abbreviation: gak_q58.tif
- Source_Used_Citation_Abbreviation: gak_q59.tif
- Source_Used_Citation_Abbreviation: gak_q60.tif
- Source_Used_Citation_Abbreviation: gak_250m_lcc_wgs84.pix
- Process_Date: 20070827
- Source_Produced_Citation_Abbreviation: gak_250m_lcc_wgs84.pix
- Process_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
- Process_Step:
-
- Process_Description:
-
The completed reduced 250-meter mosaic was exported from the PCI database as a GeoTIFF image with associated world file.
- Source_Used_Citation_Abbreviation: gak_250m_lcc_wgs84.pix
- Process_Date: 20070827
- Source_Produced_Citation_Abbreviation: gak_250m_lcc_wgs84.tif
- Source_Produced_Citation_Abbreviation: gak_250m_lcc_wgs84.tfw
- Process_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
- Spatial_Data_Organization_Information:
-
- Direct_Spatial_Reference_Method: Raster
- Raster_Object_Information:
-
- Raster_Object_Type: Pixel
- Row_Count: 3770
- Column_Count: 9397
- Vertical_Count: 1
- Spatial_Reference_Information:
-
- Horizontal_Coordinate_System_Definition:
-
- Planar:
-
- Map_Projection:
-
- Map_Projection_Name: Lambert Conformal Conic
- Lambert_Conformal_Conic:
-
- Standard_Parallel: 50.000000
- Standard_Parallel: 59.000000
- Longitude_of_Central_Meridian: -144.000000
- Latitude_of_Projection_Origin: 55.000000
- False_Easting: 0.000000
- False_Northing: 0.000000
- Planar_Coordinate_Information:
-
- Planar_Coordinate_Encoding_Method: row and column
- Coordinate_Representation:
-
- Abscissa_Resolution: 250.000000
- Ordinate_Resolution: 250.000000
- 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
- Entity_and_Attribute_Information:
-
- Overview_Description:
-
- Entity_and_Attribute_Overview:
-
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). These data have NOT been radiometrically enhanced.
- 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: 9.8
- Digital_Transfer_Option:
-
- Online_Option:
-
- Computer_Contact_Information:
-
- Network_Address:
-
- Network_Resource_Name:
-
<https://pubs.usgs.gov/of/2010/1332/gloria_data/gulf_of_alaska/composite/gak_250m_lcc_wgs84.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: 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: 9.8
- Digital_Transfer_Option:
-
- Online_Option:
-
- Computer_Contact_Information:
-
- Network_Address:
-
- Network_Resource_Name:
-
<https://pubs.usgs.gov/of/2010/1332/gloria_data/gulf_of_alaska/composite/gak_250m_lcc_wgs84.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 composite 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 view the georeference information contained in a separate file included in the zip file.
- Metadata_Reference_Information:
-
- Metadata_Date: 20110331
- 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 11:40:20 2011