Metadata: Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2010 Title: Composite sidescan-sonar mosaic collected by the National Oceanic and Atmospheric Administration offshore of Massachusetts in the approaches to Boston Harbor near Hull (DH_NOAA_backscatter1m, UTM Zone 19N, GeoTIFF) Edition: 1.0 Geospatial_Data_Presentation_Form: remote-sensing image Series_Information: Series_Name: Open-File Report Issue_Identification: 2009-1072 Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: https://doi.org/10.3133/ofr20091072 Online_Linkage: http://pubs.usgs.gov/of/2009/1072/GIS/raster/backscatter/DH_NOAA_backscatter1m.zip Online_Linkage: http://pubs.usgs.gov/of/2009/1072/html/appendix1.html Larger_Work_Citation: Citation_Information: Originator: Walter A. Barnhardt Originator: Seth D. Ackerman Originator: Brian D. Andrews Originator: Wayne E. Baldwin Publication_Date: 2010 Title: Geophysical and Sampling Data from the Inner Continental Shelf: Duxbury to Hull, Massachusetts. Edition: 1.0 Series_Information: Series_Name: Open-File Report Issue_Identification: 2009-1072 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2009/1072/ Description: Abstract: These data were collected under a cooperative agreement with the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS), Coastal and Marine Geology Program, Woods Hole Science Center (WHSC). Initiated in 2003, the primary objective of this program is to develop regional geologic framework information for the management of coastal and marine resources. Accurate data and maps of sea-floor geology are important first steps toward protecting fish habitat, delineating marine resources, and assessing environmental changes due to natural or human impacts. The project is focused on the inshore waters (5-30 m deep) of Massachusetts between the New Hampshire border and Cape Cod Bay. Data collected for the mapping cooperative have been released in a series of USGS Open-File Reports (http://woodshole.er.usgs.gov/project-pages/coastal_mass/html/current_map.html). This spatial dataset is from the study area located between Duxbury and Hull Massachusetts, and consists of high-resolution geophysics (bathymetry, backscatter intensity, and seismic reflection) and ground validation (sediment samples, video tracklines and bottom photographs). The data were collected during four separate surveys conducted between 2003 and 2007 (NOAA survey H10993 in 2003, USGS-WHSC survey 06012 in 2006, and USGS-WHSC surveys 07001 and 07003 in 2007) and cover more than 200 square kilometers of the inner continental shelf. Purpose: This GeoTIFF (Tagged Image File Format) contains approximately 45 square-km of RESON SeaBat 8101 and 8125 multibeam-echosounder backscatter data that were collected by the National Oceanic and Atmospheric Administration during hydrographic survey H10993 offshore of Massachusetts, in the approaches to Boston Harbor near Hull. These data are used to define the sea-floor morphology as part of the Massachusetts Sea-floor Mapping Project. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20030820 Ending_Date: 20031003 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -70.833278 East_Bounding_Coordinate: -70.721592 North_Bounding_Coordinate: 42.349316 South_Bounding_Coordinate: 42.257596 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:d479ef15-e0df-453f-93f5-878202765d84 Theme: Theme_Keyword_Thesaurus: None 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: Seafloor Theme_Keyword: Marine Geology Theme_Keyword: NOAA hydrographic survey registry number H10993 Theme_Keyword: multibeam Theme_Keyword: multibeam echosounder Theme_Keyword: multibeam backscatter Theme_Keyword: backscatter Theme_Keyword: sonar Theme_Keyword: GeoTIFF image Theme_Keyword: grey scale Theme_Keyword: mosaic Theme_Keyword: RESON Theme_Keyword: RESON SeaBat Theme_Keyword: RESON 8101 Theme_Keyword: RESON 8125 Theme_Keyword: NOAA Ship Thomas Jefferson Theme_Keyword: NOAA Launch 1005 Theme_Keyword: NOAA Launch 1014 Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: geoscientificInformation Theme_Keyword: imageryBaseMapsEarthCover Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: sea-floor acoustic reflectivity Theme_Keyword: image mosaics Theme_Keyword: sidescan sonar Theme_Keyword: marine geophysics Theme_Keyword: geospatial datasets Place: Place_Keyword_Thesaurus: None Place_Keyword: North America Place_Keyword: United States Place_Keyword: Atlantic Ocean Place_Keyword: Massachusetts Place_Keyword: Boston South Shore Place_Keyword: Massachusetts Bay Place_Keyword: Cape Cod Bay Place_Keyword: Nantasket Beach Place_Keyword: Hull Bay Place_Keyword: Scituate Place_Keyword: Marshfield Place_Keyword: Brant Rock Place_Keyword: Duxbury Beach Place_Keyword: Duxbury Bay 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_Person_Primary: Contact_Person: Seth Ackerman Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2315 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: sackerman@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/of/2009/1072/GIS/browse_jpg/big/DH_NOAA_backscatter1m.jpg Browse_Graphic_File_Description: grey scale image of multibeam-echosounder backscatter mosaic Browse_Graphic_File_Type: JPEG Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.1850 Cross_Reference: Citation_Information: Originator: J. Beaudoin Originator: J.E. Hughes-Clarke Originator: E.J. van den Ameele Originator: J.V. Gardner Publication_Date: 2002 Title: Geometric and radiometric correction of multibeam backscatter derived from RESON 8101 systems Series_Information: Series_Name: Canadian Hydrographic Conference Proceedings CDROM Issue_Identification: 2002 Publication_Information: Publication_Place: unknown Publisher: Canadian Hydrographic Service Cross_Reference: Citation_Information: Originator: Walter A. Barnhardt Originator: Brian D. Andrews Originator: Bradford Butman Publication_Date: 2006 Title: High-Resolution Mapping of the Inner Continental Shelf: Nahant to Gloucester, Massachusetts Series_Information: Series_Name: Open-File Report Issue_Identification: 2005-1293 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2005/1293/ Cross_Reference: Citation_Information: Originator: Seth D. Ackerman Originator: Bradford Butman Originator: Walter A. Barnhardt Originator: William W. Danforth Originator: James M. Crocker Publication_Date: 2006 Title: High-Resolution Geologic Mapping of the Inner Continental Shelf: Boston Harbor and Approaches, Massachusetts Series_Information: Series_Name: Open-File Report Issue_Identification: 2006-1008 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2006/1008/ Cross_Reference: Citation_Information: Originator: Walter A. Barnhardt Originator: Brian D. Andrews Originator: Seth D. Ackerman Originator: Wayne E. Baldwin Originator: Christopher J. Hein Publication_Date: 2009 Title: High-Resolution Geological Mapping of the Inner Continental Shelf: Cape Ann to Salisbury Beach, Massachusetts Series_Information: Series_Name: Open-File Report Issue_Identification: 2007-1373 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2007/1373/ Cross_Reference: Citation_Information: Originator: NOAA (National Oceanic and Atmospheric Administration) Publication_Date: 2003 Title: Data Acquisition and Process Report - NOAA Ship Thomas Jefferson (August - November 2003) Series_Information: Series_Name: Data Acquisition and Process Report (DAPR) Issue_Identification: NOAA Ship Thomas Jefferson (August - November 2003) Publication_Information: Publication_Place: National Geophysical Data Center, Boulder, CO Publisher: National Oceanic and Atmospheric Administration, National Geophysical Data Center (NGDC) Online_Linkage: http://surveys.ngdc.noaa.gov/mgg/NOS/DAPRs/NOAAShipTHOMASJEFFERSONAugNov2003.pdf Cross_Reference: Citation_Information: Originator: NOAA (National Oceanic and Atmospheric Administration) Publication_Date: 2003 Title: Descriptive Report, Basic Hydrographic Survey H10993, Approaches to Boston Harbor, Massachusetts Bay, Massachusetts Series_Information: Series_Name: Descriptive Report (DR) Issue_Identification: H10993 Publication_Information: Publication_Place: National Geophysical Data Center, Boulder, CO Publisher: National Oceanic and Atmospheric Administration, National Geophysical Data Center (NGDC) Online_Linkage: http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H10993/DR/H10993.pdf Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: 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). Logical_Consistency_Report: This image represents backscatter imagery from multibeam echosounder sonar data along the main survey lines; no crossline data were included in this image. Gaps may occur along-track and between adjacent lines. Significant tonal variation occur as a result of different sonar equipment and changes in acquisition setting that were not able to be accounted for in the processing. Completeness_Report: This backscatter mosaic was created from the subset of multibeam-echosounder backscatter data collected during NOAA hydrographic survey H10993 that are within the study area between Duxbury and Hull. Additional multibeam-echosounder data located outside the Duxbury to Hull study area were not processed. Some sections of sonar data with excess noise may have been clipped during processing. No additional visual enhancement was performed. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Hydrographic survey H10993: Horizontal sounding positional control for the NOAA H10993 survey was determined using the Global Positioning System (GPS) corrected by U.S. Coast Guard differential GPS (DGPS) beacon stations. The primary and only DGPS beacon used for survey H10993 was Portsmouth Harbor, NH (Beacon No. 771). No horizontal control stations were established for the NOAA survey. Additional information may be found in the NOAA Descriptive Report for survey H10993, the Data Acquisition and Processing Report, and the Horizontal and Vertical Control Report. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: unpublished material Title: Information unavailable from original metadata. Other_Citation_Details: The source information was incomplete and had to be modified to meet the standard. Type_of_Source_Media: disc Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20030820 Ending_Date: 20031003 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Information unavailable from original metadata. Source_Contribution: For NOAA Hydrographic survey H10993: Launch 1005 acquired multibeam-echosounder data using a hull-mounted RESON SeaBat 8101 multibeam system. All positioning and attitude on Launch 1005 were determined with a TSS POS/MV 320 (version 2) GPS aided inertial navigation system. Launch 1014 acquired multibeam-echosounder data using a hull-mounted RESON SeaBat 8125 multibeam system. For continuous refraction correctors at the transducer, a Digibar Pro was used for the surface sound velocity and all positioning and attitudes on Launch 1014 were determined with a TSS POS/MV 320 (version 3) GPS-aided inertial navigation system. The RESON SeaBat 8101 is a 1.5 deg beam angle system which operates at a frequency of 240 kHz and collects 101 individual soundings in a swath oriented perpendicular to the vessel track. The RESON SeaBat 8125 is a 0.5 deg beam angle system which operates at a frequency of 455 kHz and collects 240 individual soundings in a swath oriented perpendicular to the vessel track. Sounding positional control was determined using the Global Positioning System (GPS) corrected by U.S. Coast Guard differential GPS (DGPS) beacon stations. The primary and only DGPS beacon used for this survey was Portsmouth Harbor, NH (Beacon # 771). No horizontal control stations were established for this survey. NOAA's Computer Aided Resource Information System (CARIS) directory with all of the processed multibeam bathymetric data was provided to the USGS. The raw eXtended Triton Format (XTF) multibeam backscatter data from NOAA survey H10993 was also delivered to the USGS where it was processed using a radiometric-correction technique developed by the Ocean Mapping Group and the University of New Brunswick (Beaudoin and others, 2002). Refer to the Fall Data Acquisition and Processing Report (DAPR) and the Horizontal and Vertical Control Report, for detailed equipment, vessel configuration and setting information. No additional visual enhancement was performed. Significant tonal variation occurs in this dataset as a result of the system parameters during acquisition. Process_Step: Process_Description: The raw eXtended Triton Format (XTF) multibeam backscatter data from NOAA survey H10993 was also delivered to the USGS where it was processed (in SwathEd, build January2008) using a radiometric-correction technique developed by the Ocean Mapping Group and the University of New Brunswick (Beaudoin and others, 2002). Processing occurred in 2008 and 2009. Process_Date: 2009 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Seth Ackerman Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: (508) 548-8700x2315 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: sackerman@usgs.gov Process_Step: Process_Description: Each survey day was individually mosaicked into a separate mosaic file (MOS) with the bounds of the entire H10993 survey area and converted to a Portable GrayMap image (PGM) using SwathEd (build January2008) software. The PGM files were then converted to TIFF images using ImageMagick (v6.3.7). TIFF World Files (TFW) were created for each TIFF image from the MOS files using the SwathEd command "edhead." Process_Date: 2009 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Seth Ackerman Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: (508) 548-8700x2315 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: sackerman@usgs.gov Process_Step: Process_Description: The TIFF images for each individual survey day were combined using Adobe Photoshop (CS2); the backscatter from the hull-mounted multibeam system displayed no layback offset that needed to be accounted for. No additional visual enhancement was performed. Significant tonal variation occurs in this dataset as a result of the system parameters during acquisition. Process_Date: 2009 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Seth Ackerman Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: (508) 548-8700x2315 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: sackerman@usgs.gov Process_Step: Process_Description: A TIFF World File (TFW) was created using Mentor Software GeoTiffExaminer (no version) to define the spatial extent of the TIFF image. GeoTiffExaminer was also used to transfer the spatial information to the TIFF, creating a GeoTIFF image Source_Used_Citation_Abbreviation: DH_NOAA_backscatter1m.tfw Process_Date: 2009 Source_Produced_Citation_Abbreviation: DH_NOAA_backscatter1m.tif Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Seth Ackerman Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: (508) 548-8700x2315 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: sackerman@usgs.gov Process_Step: Process_Description: Edits to the metadata were made to fix any errors that MP v 2.9.30 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. The source information was incomplete and had to be modified to meet the standard. The distribution format was modified in an attempt to be more consistent with other metadata files of the same data format. Other minor edits were probably performed (title, publisher, publication place, etc.). 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. Process_Date: 20151112 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 Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@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: Crossref DOI link was added as the first link in the metadata. Process_Date: 20191118 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: 20200908 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: 13001 Column_Count: 9001 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: 19 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -69.000000 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 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) with the data range 0-254. Low-backscatter is represented by dark tones (low values) and high-backscatter is represented by bright tones (high values). The background color is set to 255 and can be turned off without removing data values. Entity_and_Attribute_Detail_Citation: U.S. Geological Survey Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Seth Ackerman Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2315 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: sackerman@usgs.gov 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 U.S. Geological Survey 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: Adobe Photoshop CS2 Format_Information_Content: This WinZip file contains a geographic GeoTIFF image of multibeam-echosounder data from the Duxbury to Hull survey area. File_Decompression_Technique: use WinZip or pkUnzip Transfer_Size: 29.000 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2009/1072/GIS/raster/backscatter/DH_NOAA_backscatter1m.zip Access_Instructions: Data can be downloaded via 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: This zip file contains a GeoTIFF image with an accompanying world file. To utilize this data, the user must have an image viewer, image processing or GIS software package capable of importing a GeoTIFF image. A free spatial data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com. Metadata_Reference_Information: Metadata_Date: 20240318 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Seth Ackerman Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2315 Contact_Facsimile_Telephone: 508-457-2310 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 20240318) Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time