GeoTIFF image of shaded-relief bathymetry, colored by backscatter intensity, of the sea floor of the Hudson Shelf Valley (12-m resolution, Mercator, WGS 84)

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2017
Title:
GeoTIFF image of shaded-relief bathymetry, colored by backscatter intensity, of the sea floor of the Hudson Shelf Valley (12-m resolution, Mercator, WGS 84)
Edition: 1.0
Geospatial_Data_Presentation_Form: remote-sensing image
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/F7C53J1Z
Publication_Information:
Publication_Place: Woods Hole Coastal and Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: https://doi.org/10.5066/F7C53J1Z
Online_Linkage:
https://www.sciencebase.gov/catalog/item/589a2039e4b0efcedb71a5a1
Larger_Work_Citation:
Citation_Information:
Originator: Bradford Butman
Originator: William W. Danforth
Originator: John E. Hughes Clarke
Originator: Richard P. Signell
Publication_Date: 2017
Title:
Bathymetry and backscatter intensity of the sea floor of the Hudson Shelf Valley
Edition: 1.0
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/F7C53J1Z
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Suggested citation: Butman, Bradford, Danforth, W.W., Clarke, J.E.H., and Signell, R.P., 2017, Bathymetry and backscatter intensity of the sea floor of the Hudson Shelf Valley: U.S. Geological Survey data release, https://doi.org/10.5066/F7C53J1Z.
Online_Linkage: https://doi.org/10.5066/F7C53J1Z
Description:
Abstract:
The Hudson Shelf Valley is the submerged seaward extension of the ancestral Hudson River drainage system and is the largest physiographic feature on the Middle Atlantic continental shelf. The valley begins offshore of New York and New Jersey at about 30-meter (m) water depth, runs southerly and then southeasterly across the Continental Shelf, and terminates on the outer shelf at about 85-m water depth landward of the head of the Hudson Canyon. Portions of the 150-kilometer-long valley were surveyed in 1996, 1998, and 2000 using a Simrad EM1000 multibeam echosounder mounted on the Canadian Coast Guard ship Frederick G. Creed. The purpose of the multibeam echosounder surveys was to map the bathymetry and backscatter intensity of the sea floor of the valley, providing a framework for geologic, oceanographic, and geochemical studies. The data from the three surveys are combined to produce grids of bathymetry and backscatter intensity at 12-m resolution that cover the entire valley and the head of the Hudson Canyon. The mapping was done by the U.S. Geological Survey in cooperation with the U.S. Army Corps of Engineers with support from the Canadian Hydrographic Service and the University of New Brunswick.
Purpose:
The GeoTIFF image of shaded-relief bathymetry, colored by backscatter intensity, provides a visualization of both bathymetry and backscatter intensity. The shaded-relief image was created by vertically exaggerating the bathymetry 4 times and then artificially illuminating the relief by a light source positioned 45 degrees above the horizon from the north. The backscatter intensity is represented by a suite of eight colors ranging from blue (low intensity) to green to yellow to red (high intensity). The image merges data obtained in 1996, 1998, and 2000.
Supplemental_Information:
Butman and others (1998), Butman and others (2003), and Thieler and others (2007) (see cross references) present maps and interpretations of the multibeam data. Additional edits, primarily sound velocity corrections, were made to the bathymetry grid compared to that shown in Butman and others (2003). In addition, in the image presented in Butman and others (2003), the value of 255 included both no data and the maximum data value. In this image, the value of 255 is no data. Other datasets from the survey of the Hudson Shelf Valley may be found in Butman and others (2017) (see larger work citation).
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19961123
Ending_Date: 20000504
Currentness_Reference:
Ground condition. Surveys of different parts of the valley were carried out 19961123 to 19961201, 19981029 to 19981102, and 20000407 to 20000504.
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -73.901667
East_Bounding_Coordinate: -71.999938
North_Bounding_Coordinate: 40.433333
South_Bounding_Coordinate: 39.333341
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:589a2039e4b0efcedb71a5a1
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: backscatter intensity
Theme_Keyword: shaded-relief bathymetry
Theme_Keyword: GeoTIFF image
Theme_Keyword: sea floor mapping
Theme_Keyword: multibeam
Theme_Keyword: Simrad EM1000
Theme_Keyword: Canadian Coast Guard ship Frederick G. Creed
Theme_Keyword: WHCMSC field activity 1996-043-FA
Theme_Keyword: WHCMSC field activity 1998-015-FA
Theme_Keyword: WHCMSC field activity 2000-015-FA
Theme_Keyword: Woods Hole Coastal and Marine Science Center (WHCMSC)
Theme_Keyword: Coastal and Marine Geology Program (CMGP)
Theme_Keyword: U.S. Geological Survey (USGS)
Theme_Keyword: Canadian Hydrographic Service (CHS)
Theme_Keyword: University of New Brunswick (UNB)
Theme_Keyword: USGS Open-File Report 03-372
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme_Keyword: imageryBaseMapsEarthCover
Theme_Keyword: oceans
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: sea-floor characteristics
Theme_Keyword: marine geophysics
Theme_Keyword: computational methods
Theme_Keyword: geospatial datasets
Theme_Keyword: multibeam sonar
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: Hudson Shelf Valley
Place_Keyword: New York Bight
Place_Keyword: mid-Atlantic Bight
Place_Keyword: Middle Atlantic Bight
Place_Keyword: New York
Place_Keyword: New Jersey
Place_Keyword: Hudson Canyon
Place_Keyword: North Atlantic Ocean
Stratum:
Stratum_Keyword_Thesaurus: none
Stratum_Keyword: sea floor
Access_Constraints: None
Use_Constraints: Not to be used for navigation.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Bradford Butman
Contact_Address:
Address_Type: mailing and physical address
Address: Woods Hole Coastal and Marine Science Center
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2212
Contact_Electronic_Mail_Address: bbutman@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name:
https://www.sciencebase.gov/catalog/file/get/589a2039e4b0efcedb71a5a1?name=hsv_srback12m_browsegraphic.jpg
Browse_Graphic_File_Description:
Browse graphic of the sea floor shaded-relief bathymetry colored by backscatter intensity.
Browse_Graphic_File_Type: JPEG
Native_Data_Set_Environment:
Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.4095
Cross_Reference:
Citation_Information:
Originator: Butman, Bradford
Originator: Middleton, T.J.
Originator: Thieler, E.R.
Originator: Schwab, W.C.
Publication_Date: 2003
Title:
Topography, shaded-relief and backscatter intensity of the Hudson Shelf Valley, Offshore of New York
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 03-372
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.usgs.gov/of/2003/of03-372/
Cross_Reference:
Citation_Information:
Originator: Thieler, E.R.
Originator: Butman, Bradford
Originator: Schwab, W.C.
Originator: Allison, M.A.
Originator: Driscoll, N.W.
Originator: Donnelly, J.P.
Originator: Uchupi, Elazar
Publication_Date: 2007
Title:
A catastrophic meltwater flood event and the formation of the Hudson Shelf Valley
Series_Information:
Series_Name: Palaeogeography, Palaeoclimatology, Palaeoecology
Issue_Identification: 246 (2007), 120-136; DOI: 10.1016/j.palaeo.2006.10.030
Publication_Information:
Publication_Place: Amsterdam
Publisher: Elsevier Ltd.
Online_Linkage: http://dx.doi.org/10.1016/j.palaeo.2006.10.030
Cross_Reference:
Citation_Information:
Originator: Butman, Bradford
Originator: Danforth, W.W.
Originator: Schwab, W.C.
Originator: ten Brink, M.B.
Publication_Date: 1998
Title:
Multibeam bathymetric and backscatter maps of the upper Hudson Shelf Valley and adjacent shelf, offshore of New York
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 98-616
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.usgs.gov/of/1998/of98-616/
Cross_Reference:
Citation_Information:
Originator: Butman, Bradford
Originator: Danforth, W.W.
Originator: Knowles, S.C.
Originator: May, Brian
Originator: Serrett, Laurie
Publication_Date: 2002
Title:
Sea floor topography and backscatter intensity of the Historic Area Remediation Site (HARS), offshore of New York, based on multibeam surveys conducted in 1996, 1998, and 2000
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 00-503
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.usgs.gov/of/2000/of00-503/
Cross_Reference:
Citation_Information:
Originator: Butman, Bradford
Originator: Twichell, D.C.
Originator: Rona, P.A.
Originator: Tucholke, B.E.
Originator: Middleton, T.J.
Originator: Robb, J.R.
Publication_Date: 2006
Title:
Sea floor topography and backscatter intensity of the Hudson Canyon region offshore of New York and New Jersey
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2004-1441
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.usgs.gov/of/2004/1441/
Cross_Reference:
Citation_Information:
Originator: Clarke, J.H.
Publication_Date: 1998
Title: SwathEd
Publication_Information:
Publication_Place: New Brunswick, Canada
Publisher: Ocean Mapping Group, University of New Brunswick
Online_Linkage: http://www.omg.unb.ca/~jhc/SwathEd.html
Cross_Reference:
Citation_Information:
Originator: Butman, Bradford
Originator: Danforth, W.W.
Originator: Clarke, J.E.H.
Originator: Signell, R.P.
Publication_Date: 2017
Title:
Bathymetry and backscatter intensity of the sea floor of the Historic Area Remediation Site in 1996, 1998, and 2000
Edition: 1.0
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/F74B2ZGX
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details:
This publication contains edition 2.0 of the bathymetry and derivative datasets that were originally released as part of Open-File Report 00-503. Edition 2.0 was created using revised processing software to correct a projection error in edition 1.0. The stretch for the images in edition 2.0 was also changed so that 255 is no data.
Online_Linkage: https://doi.org/10.5066/F74B2ZGX
Data_Quality_Information:
Logical_Consistency_Report:
All data were processed in the same manner. Some features in the multibeam data are artifacts of data collection and environmental conditions. They include small highs and lows and unnatural-looking features and patterns oriented parallel or perpendicular to survey tracklines. The orientation of a trackline is sometimes identified by the parallel stripes in the image.
Completeness_Report:
This image combines backscatter intensity and bathymetry data collected with a Simrad EM 1000 multibeam echosounder on Woods Hole Coastal and Marine Science Centerfield activities 1996-043-FA, 1998-015-FA, and 2000-015-FA that have been merged together. There are a few data gaps in image due to incomplete coverage by the multibeam system. Other datasets from the survey of the Hudson Shelf Valley may be found in Butman and others (2017) (see larger work citation).
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
These data were navigated with a Differential Global Positioning System (DGPS) which is typically accurate to +/- 3 meters, horizontally. Repeated surveys of the Historic Area Remediation Site (HARS) (Butman and others, 2017), made on the same cruises and using the same instrumentation as the surveys of the Hudson Shelf Valley, were used to qualitatively assess the horizontal accuracy of the 1996, 1998, and 2000 surveys. The difference in location of sea floor features in the HARS identified in the 1996 and 1998 surveys were typically 5 m or less, as expected when navigating with DGPS. The difference in location of same features in the 1998 and 2000 survey were typically 10-20 m and in the along-track direction of the survey. This analysis suggests that the data collected in 1996 and 1998 surveys of the Hudson Shelf Valley are accurate to +/- 3 m horizontally, and the data collected in the 2000 survey accurate to 10-20 m horizontally.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Canadian Hydrographic Service
Originator: William W. Danforth
Originator: John E. Hughes Clarke
Publication_Date: Unpublished Material
Title: raw multibeam data
Type_of_Source_Media: disc
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19961123
Ending_Date: 20000504
Source_Currentness_Reference:
Ground condition. Surveys of different parts of the valley were carried out 19961123 to 19961201, 19981029 to 19981102, and 20000407 to 20000504.
Source_Citation_Abbreviation: none
Source_Contribution:
The multibeam data were collected with a Simrad EM1000 multibeam echosounder mounted on the Canadian Coast Guard ship Frederick G. Creed. The multibeam system utilizes 60 electronically-aimed receive beams spaced at intervals of 2.5 degrees that insonify a strip of sea floor up to 7.5 times the water depth. The horizontal resolution of the beam on the sea floor is approximately 10 % of the water depth. Vertical resolution is approximately 1 % of the water depth. Data were collected along tracklines spaced 5-7 times the water depth apart at a speed of 10-14 knots. The valley was surveyed with lines running approximately parallel to the valley axis; in some areas the lines were run in a Zamboni pattern for efficiency. The piecemeal survey pattern was a result of the limited endurance of the Creed, about 2 days, and weather. The frequency of the sonar is 95 kHz. Sound velocity profiles, used to correct for refraction, were obtained when arriving at the start of each portion of the survey and then twice each day. Navigation was by means of differential GPS. Operation of the Simrad EM1000 was carried out by hydrographers of the Canadian Hydrographic Service. The data were collected on Woods Hole Coastal and Marine Science Center field activities 1996-043-FA (https://cmgds.marine.usgs.gov/fan_info.php?fa=1996-043-FA), 1998-015-FA (https://cmgds.marine.usgs.gov/fan_info.php?fa=1998-015-FA), and 2000-015-FA (https://cmgds.marine.usgs.gov/fan_info.php?fa=1998-015-FA).
Process_Step:
Process_Description:
A suite of processing software (called SwathEd) (Clarke, 1998; see cross reference), developed by the Ocean Mapping Group at the University of New Brunswick (UNB), Canada, was used to process and grid the multibeam bathymetric soundings and backscatter intensity data, and to produce images. The metadata for the grid (see larger work citation) describes the processing steps applied to the navigation and bathymetric soundings. The following processing steps produced the shaded-relief image of bathymetry, colored by backscatter intensity, for the 1996, 1998, and 2000 Hudson Shelf Valley datasets:
1. Create a blank 8-bit map file: Command line: make_blank mosaic_file This command commences a dialog to enable an 8-bit image and input the map boundaries and resolution. The program also prompts for the projection type and parameters to be used creating the binary map file (custom Mercator projection, central longitude of -75 degrees, latitude of true scale 40 degrees north).
Then the "blank" file is copied to two files required by the mosaic program:
Command line: cp mosaic_file.blank mosaic_file.mos
Command line: cp mosaic_file.blank mosaic_file.ran
2. Create backscatter files that can then be mosaicked from the backscatter time series:
Command line: getBeamPattern filename (prefix only) Command line: makess -pixel 1.0 -beam_patt beampatt filename (prefix only) output.ss Command line: glfill output.ss output.ss_fill (fills in data dropouts).
3. Mosaic all the backscatter files created in the last step (for each output.ss_fill), and then use a two point linear contrast stretch (0-254; 255 is no data) to enhance the backscatter image.
Command line: mos2 -autoseam -maxazi 10 -maxdist 10 mosaic_file output.ss_fill Command line: stretchacres -low 180 -high 220 -in mosaic_file -out mosaic_file.stretch
4. Create a shaded-relief image of the bathymetry using SwathEd routine addSUN (sun elevation of 45 degrees from the north, vertically exaggerating 4 times).
Command line: addSUN -elev 45 -azi 0 -vert_exag 4.0 gridFile.r4 filename.shade
Note: Errors in the UNB gridding software were identified in 2003 and 2007. These data were processed with corrected software.
Process_Date: 2007
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: William W. Danforth
Contact_Address:
Address_Type: mailing and physical address
Address: Woods Hole Coastal and Marine Science Center
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2274
Contact_Electronic_Mail_Address: bdanforth@usgs.gov
Process_Step:
Process_Description:
Use a two point linear contrast stretch (0-254; 255 is no data) to enhance the shaded-relief image:
Command line: stretchacres -low 150 -high 200 -in filename.shade -out filename_shade.stretch
(Note the value 255 in images presented in Butman and others (2003) include both no data and maximum data value. In this image, the value 255 is no data.)
Create an image of shaded-relief topography, colored by backscatter intensity:
Command line: mix_ci -c mosaic_file.stretch -i filename_shade.stretch -m mosaic_file.pseudo
Create a TIFF from the backscatter mosaic file using the netpbm utilities (http://netpbm.sourceforge.net/):
Command line: rawtopgm -headerskip 1024 image_width image_height mosaic_file.stretch | pnmtotiff -none - > mosaic_grayscale.tif
Process_Date: 2016
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: William W. Danforth
Contact_Address:
Address_Type: mailing and physical address
Address: Woods Hole Coastal and Marine Science Center
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2274
Contact_Electronic_Mail_Address: bdanforth@usgs.gov
Process_Step:
Process_Description:
Create a TIFF world file (tfw) for the shaded-relief image colored by backscatter intensity for import to ArcGIS. Copy bounding box and resolution information from the jview program output to the tfw file using UNIX text editor vi.
Command line: jview mosaic_file.pseudo
This file was created in 2007 for use with intermediate versions of the TIFF image and is unchanged for all versions.
Process_Date: 2007
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: William W. Danforth
Contact_Address:
Address_Type: mailing and physical address
Address: Woods Hole Coastal and Marine Science Center
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2274
Contact_Electronic_Mail_Address: bdanforth@usgs.gov
Process_Step:
Process_Description:
Import image into Adobe Photoshop (CS06, Mac version 13.0) and convert from an 8-bit image to a 3-band 24-bit RGB image. This improves the quality of the image when viewed in ArcMAP at large scale.
Process_Date: 2016
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: William W. Danforth
Contact_Address:
Address_Type: mailing and physical address
Address: Woods Hole Coastal and Marine Science Center
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2274
Contact_Electronic_Mail_Address: bdanforth@usgs.gov
Process_Step:
Process_Description:
Create GeoTIFF image using the Define Projection Tool in Data Management Tools, Projections and Transformations in ArcToolbox 9.3. Projection is custom Mercator, central meridian of -75.0 degrees, latitude of true scale 40.0 degrees north, false easting 0.0, false northing 0.0; Geographic Coordinate System WGS 1984.
Process_Date: 2016
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Bradford Butman
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 x 2212
Contact_Electronic_Mail_Address: bbutman@usgs.gov
Process_Step:
Process_Description: USGS Thesaurus keywords added to the keyword section.
Process_Date: 20180720
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Process_Step:
Process_Description:
Added keywords section with USGS persistent identifier as theme keyword.
Process_Date: 20200810
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 10161
Column_Count: 13533
Vertical_Count: 1
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Mercator
Mercator:
Standard_Parallel: 40.000000
Longitude_of_Central_Meridian: -75.000000
False_Easting: 0.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 12.000000
Ordinate_Resolution: 12.000000
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:
The backscatter intensity is combined with the topography to display the distribution of intensity in relation to the topography. The backscatter intensity is represented by a suite of eight colors ranging from blue (low intensity) to green to yellow to red (high intensity). These data are draped over a shaded-relief image created by vertically exaggerating the topography four times and then artificially illuminating the relief from the north by a light source positioned 45 degrees above the horizon. The resulting image displays light and dark intensities within each color band that result from a feature's position with respect to the light source. For example, north-facing slopes, receiving strong illumination, show as a light intensity within a color band, whereas south-facing slopes, being in shadow, show as a dark intensity within a color band. Image is 3-band, 24-bit R, G, B; (255,255,255) is no data.
Entity_and_Attribute_Detail_Citation: U.S. Geological Survey
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey - ScienceBase
Contact_Address:
Address_Type: mailing and physical address
Address: Denver Federal Center
Address: Building 810
Address: Mail Stop 302
City: Denver
State_or_Province: CO
Postal_Code: 80225
Contact_Voice_Telephone: 1-888-275-8747
Contact_Electronic_Mail_Address: sciencebase@usgs.gov
Resource_Description:
hsv_srback12m.zip: contains hsv_srback12m.tif, hsv_srback12m.tfw, hsv_srback12m_browsegraphic.jpg browse graphic, and CSDGM FGDC-compliant metadata in XML, HTML, and TXT formats.
Distribution_Liability:
Neither the U.S. Government, the Department of the Interior, nor the U.S. Geological Survey, nor the U.S. Army Corps of Engineers, 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: GeoTIFF
Format_Version_Number: ArcGIS 9.3
Format_Specification: GeoTIFF image
Format_Information_Content:
GeoTIFF image of shaded-relief bathymetry colored by backscatter intensity and associated metadata from multibeam surveys of the Hudson Shelf Valley compressed in a zip file.
File_Decompression_Technique: zip
Transfer_Size: 13.1
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
https://www.sciencebase.gov/catalog/file/get/589a2039e4b0efcedb71a5a1?name=hsv_srback12m.zip
Network_Resource_Name:
https://www.sciencebase.gov/catalog/file/get/589a2039e4b0efcedb71a5a1
Network_Resource_Name:
https://www.sciencebase.gov/catalog/item/589a2039e4b0efcedb71a5a1
Network_Resource_Name: https://doi.org/10.5066/F7C53J1Z
Access_Instructions:
The network resources offer the options of downloading all the files, individual files, or accessing the landing page of the data.
Fees: none
Technical_Prerequisites:
The GeoTIFF image of shaded-relief bathymetry colored by backscatter intensity is compressed into a zip file (hsv_srback12m.zip). To use these data, the user must have software capable of uncompressing the zip file and ArcGIS or another GIS application package capable of viewing the data.
Metadata_Reference_Information:
Metadata_Date: 20240319
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Bradford Butman
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2212
Contact_Electronic_Mail_Address: whsc_data_contact@usgs.gov
Contact_Instructions:
The metadata contact email address is a generic address in the event the person is no longer with USGS. (updated on 20240319)
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/SB_data_release/DR_F7C53J1Z/hsv_srback12m.tif_meta.html>
Generated by mp version 2.9.51 on Wed Jun 26 15:25:02 2024