Identification_Information: Citation: Citation_Information: Originator: Wayne Baldwin Publication_Date: 2016 Title: 10-m Bathymetry grid of Vineyard and western Nantucket Sounds produced from lead-line and single-beam sonar soundings, swath-interferometric, multibeam, and lidar datasets (Esri binary grid, UTM Zone 19N, WGS84) Edition: 1 Geospatial_Data_Presentation_Form: raster digital data Series_Information: Series_Name: Open-File Report Issue_Identification: 2016-1119 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: http://pubs.usgs.gov/of/2016/1119/GIS_catalog/SourceData/bathy/vns10m_navd88.zip Larger_Work_Citation: Citation_Information: Originator: Wayne E. Baldwin Originator: David S. Foster Originator: Elizabeth A. Pendleton Originator: Walter A. Barnhardt Originator: William C. Schwab Originator: Brian D. Andrews Originator: Seth D. Ackerman Publication_Date: 2016 Title: Shallow Geology, Sea-Floor Texture, and Physiographic Zones of Vineyard and western Nantucket Sounds, Massachusetts Edition: 1 Series_Information: Series_Name: Open-File Report Issue_Identification: 2016-1119 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2016/1119/ Description: Abstract: Geologic, sediment texture, and physiographic zone maps characterize the sea floor of Vineyard and western Nantucket Sounds, Massachusetts. These maps were derived from interpretations of seismic-reflection profiles, high-resolution bathymetry, acoustic-backscatter intensity, bottom photographs, and surficial sediment samples. The interpretation of the seismic stratigraphy and mapping of glacial and Holocene marine units provided a foundation on which the surficial maps were created. This mapping is a result of a collaborative effort between the U.S. Geological Survey and the Massachusetts Office of Coastal Zone Management to characterize the surface and subsurface geologic framework offshore of Massachusetts. Purpose: This bathymetric grid was created as a single continuous surface for the sea floor of Vineyard and western Nantucket Sounds. These data helped define the sediment texture and distribution maps presented as interpretive data layers in USGS OFR 2016-1119 Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1938 Ending_Date: 20110831 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -71.035443 East_Bounding_Coordinate: -70.428111 North_Bounding_Coordinate: 41.561895 South_Bounding_Coordinate: 41.319300 Keywords: 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 Coastal and Marine Science Center Theme_Keyword: WHCMSC Theme_Keyword: Massachusetts Office of Coastal Zone Management Theme_Keyword: CZM Theme_Keyword: SEA Ltd Swathplus interferometric sonar Theme_Keyword: bathymetry Theme_Keyword: Esri grid Theme_Keyword: lidar Theme_Keyword: multibeam bathymetry Theme_Keyword: seamless surface Theme_Keyword: U.S. Geological Survey Open-File Report 2006-1357 Theme_Keyword: U.S. Geological Survey Open-File Report 2008-1004 Theme_Keyword: U.S. Geological Survey Open-File Report 2009-1001 Theme_Keyword: U.S. Geological Survey Open-File Report 2011-1184 Theme_Keyword: U.S. Geological Survey Open-File Report 2012-1006 Theme_Keyword: U.S. Geological Survey Open-File Report 2013-1020 Theme_Keyword: RESON SeaBat 8125 Theme_Keyword: RESON SeaBat 8101 Theme_Keyword: National Oceanic and Atmospheric Administration Theme_Keyword: NOAA Theme_Keyword: Hydrographic Survey H11076 Theme_Keyword: Hydrographic Survey H11077 Theme_Keyword: Hydrographic Survey H11346 Theme_Keyword: Hydrographic Survey H11920 Theme_Keyword: Hydrographic Survey H11921 Theme_Keyword: U.S. Army Corps of Engineers Theme_Keyword: USACE Joint Airborne Lidar Bathymetry Technical Center of Expertise Theme: Theme_Keyword_Thesaurus: SO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: geoscientific Information Theme_Keyword: imageryBaseMapsEarthCover Theme_Keyword: elevation Place: Place_Keyword_Thesaurus: None Place_Keyword: Vineyard Sound Place_Keyword: Nantucket Sound Place_Keyword: Atlantic Ocean Place_Keyword: Cape Cod Place_Keyword: Succonnesset Point Place_Keyword: Falmouth Place_Keyword: Woods Hole Place_Keyword: Gosnold Place_Keyword: Elizabeth Islands Place_Keyword: Nonamesset Island Place_Keyword: Naushon Island Place_Keyword: Pasque Island Place_Keyword: Nashawena Island Place_Keyword: Cuttyhunk Island Place_Keyword: Martha's Vineyard Place_Keyword: Aquinnah Place_Keyword: Menemsha Place_Keyword: Vineyard Haven Place_Keyword: Oak Bluffs Place_Keyword: Edgartown Place_Keyword: Cape Poge Place_Keyword: Lucas Shoal Place_Keyword: Middle Ground Shoal Place_Keyword: L'Hommedieu Shoal Place_Keyword: Succonnesset Shoal Place_Keyword: Hedge Fence Shoal Place_Keyword: Squash Meadow Shoal Stratum: Stratum_Keyword_Thesaurus: None Stratum_Keyword: Sea floor Access_Constraints: None Use_Constraints: Not to be used for navigation. Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Wayne Baldwin 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 Country: USA Contact_Voice_Telephone: 508-548-8700 x2226 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: wbaldwin@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/of/2016/1119/GIS_catalog/SourceData/bathy/vns10m_navd88.png Browse_Graphic_File_Description: Bathymetric grid Browse_Graphic_File_Type: PNG Native_Data_Set_Environment: Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.1850 Cross_Reference: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2015 Title: Geologic Mapping of the Seafloor Offshore of Massachusetts Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Other_Citation_Details: Geologic mapping of the Massachusetts inner continental shelf is a cooperative effort that was initiated in 2003 by the U.S. Geological Survey (USGS) and the Massachusetts Office of Coastal Zone Management (CZM). The National Oceanic and Atmospheric Administration (NOAA-NOS) is also an important partner and contributes hydrographic data that are integrated into the maps. The overall goal of this cooperative is to determine the geologic framework of the sea floor inside the 3-mile limit of State waters, using high-resolution geophysical techniques, sediment sampling, and sea-floor photography. These topographic and bathymetric source data related to the composite topographic and bathymetric grid are cited in detail in the source citation section of this metadata file. Online_Linkage: http://woodshole.er.usgs.gov/project-pages/coastal_mass/ Data_Quality_Information: Logical_Consistency_Report: This bathymetric grid was created from several smaller bathymetry and lidar datasets that were processed and published in various formats and datums (see Source Information for the individual input data). NOAA single-beam sonar soundings and lead-line soundings were merged with the swath bathymetry and lidar. Bathymetric source datasets that were referenced to tidal datums (mean lower low water) were transformed to the North American Vertical Datum of 1988 (NAVD 88) using VDATUM (version 3.2). Individual datasets were imported into ArcGIS, evaluated for overlap and edited to subsets (generally on the basis of source quality, sounding density, and temporal relevance), compiled into a terrain model, then exported to an interpolated grid at 10 meters per pixel using the Natural Neighbors algorithm. The final output bathymetric DEM is composed of the best available bathymetric data for Vineyard and western Nantucket Sounds at the time of this publication. Completeness_Report: This grid includes lead-line soundings, single-beam sonar, swath interferometric, multibeam, and lidar data collected during several surveys in Vineyard and western Nantucket Sounds. The input grids can be downloaded by visiting the publications listed in the Source Information. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The horizontal accuracy of the source multibeam bathymetry (DGPS) is reported at +/- 3 meters. The horizontal accuracy of the swath bathymetry (DGPS and/or RTK-GPS) is conservatively estimated to be +/- 10 meters. The lidar data were collected to meet the +/- 3-meter accuracy specification. Horizontal accuracy for lead-line and single-beam sonar soundings are not documented. This composite topographic and bathymetric grid is assumed to be horizontally accurate to within 20 meters, as additional errors could have been introduced during resampling, vertical and horizontal reprojections, and interpolation. See USGS Open File Reports and NOAA survey descriptive reports for individual survey positioning methods. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The vertical accuracy for NOAA lead-line and single-beam sonar soundings are not documented. NOAA survey methods and processing of sounding data are in descriptive reports. All XYZ sounding data downloaded from NGDC are in tenths of meters. The vertical accuracy of the source multibeam bathymetry (RESON SeaBat 8101) is reported at +/- 30 to 50 cm. The vertical accuracy of the swath bathymetry is estimated to be +/- 10 to 60 cm. The lidar data were collected to meet the +/- 30-cm accuracy specification. This composite topographic and bathymetric grid is assumed to be vertically accurate to within 1-meter, as additional errors could have been introduced during resampling, vertical and horizontal reprojections, and interpolation. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Poppe, L.J. Originator: Ackerman, S.D. Originator: Foster, D.S. Originator: Blackwood, D.S. Originator: Butman, B. Originator: Moser, M.S. Originator: Stewart, H.F. Publication_Date: 2007 Title: Sea-floor character and surface processes in the vicinity of Quicks Hole, Elizabeth Islands, Massachusetts Series_Information: Series_Name: Open-File Report Issue_Identification: 2006-1357 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2006/1357/ Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20040810 Ending_Date: 20050617 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Poppe and others, 2007 Source_Contribution: This publication provides the source multibeam bathymetry for the Quicks Hole area. Two 29-foot launches deployed from the NOAA Ship Thomas Jefferson were used to acquire bathymetric and backscatter data during 2004. The multibeam bathymetric data were collected with hull-mounted 455-kHz RESON 8125 and 240-kHz RESON 8101 systems. The sidescan-sonar data were acquired with a hull-mounted Klein 5250 system operating at 100 kHz. Sediment samples and bottom photos were collected aboard the R/V Rafael with a modified Van Veen grab sampler and SEABOSS, respectively. Source_Information: Source_Citation: Citation_Information: Originator: Poppe, L.J. Originator: McMullen, K.Y. Originator: Foster, D.S. Originator: Blackwood, D.S. Originator: Williams, S.J. Originator: Ackerman, S.D. Originator: Moser, M.S. Originator: Glomb, K.A. Publication_Date: 2010 Title: Geological interpretation of the sea floor offshore of Edgartown, Massachusetts Series_Information: Series_Name: Open-File Report Issue_Identification: 2009-1001 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2009/1001/ Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20040814 Ending_Date: 20080909 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Poppe and others, 2010 Source_Contribution: This publication provides the source geophysical (backscatter and bathymetry) and bottom photographs and sediment samples in the vicinity of Edgartown. Two 29-foot launches deployed from the NOAA Ship Thomas Jefferson were used to acquire bathymetric and backscatter data during 2004. The multibeam bathymetric data were collected with hull-mounted 455-kHz RESON 8125 and 240-kHz RESON 8101 systems. The sidescan-sonar data were acquired with a hull-mounted Klein 5250 system operating at 100 kHz. Sediment samples and bottom photos were collected aboard the R/V Rafael with a modified Van Veen grab sampler and SEABOSS, respectively. Source_Information: Source_Citation: Citation_Information: Originator: Pendleton, E.A. Originator: Twichell, D.C. Originator: Foster, D.S. Originator: Worley, C.R Originator: Irwin, B.J. Originator: Danforth, W.W. Publication_Date: 2012 Title: High-resolution geophysical data from the sea floor surrounding the Western Elizabeth Islands, Massachusetts Series_Information: Series_Name: Open-File Report Issue_Identification: 2011-1184 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2011/1184/ Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20100909 Ending_Date: 20100918 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Pendleton and others, 2012 Source_Contribution: This report provided swath bathymetry for the area of Vineyard Sound surrounding the western Elizabeth Islands. Surveying was conducted aboard the RV Rafael in September 2010. Interferometric-sonar, sidescan-sonar, and chirp seismic-reflection systems were deployed simultaneously during the cruise. Bathymetric sounding data were collected with an SEA SWATHplus 234-kilohertz (kHz) interferometric sonar system. Sidescan-sonar (acoustic-backscatter) data were acquired with a Klein 3000 dual-frequency (100 and 500 kHz) sidescan-sonar system. Source_Information: Source_Citation: Citation_Information: Originator: Andrews, B.D. Originator: Ackerman, S.D. Originator: Baldwin, W.E. Originator: Foster, D.S. Originator: Schwab, W.C. Publication_Date: 2014 Title: High-Resolution Geophysical Data from the Inner Continental Shelf: Vineyard Sound, Massachusetts Edition: 2 Series_Information: Series_Name: Open-File Report Issue_Identification: 2012-1006 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2012/1006/ Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20090528 Ending_Date: 20110517 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Andrews and others, 2014 Source_Contribution: This report provided swath bathymetry for Vineyard and western Nantucket Sounds. The mapping was conducted during research cruises aboard the Megan T. Miller (2009 and 2010) and the Scarlett Isabella (2011). Bathymetric data were acquired using a Systems Engineering and Assessment, Ltd. (SEA) SWATHplus-M 234-kilohertz (kHz) interferometric sonar system; acoustic backscatter data were collected with a Klein 3000 dual-frequency sidescan-sonar (132 and 445 kHz). Source_Information: Source_Citation: Citation_Information: Originator: Pendleton, E.A. Originator: Andrews, B.D. Originator: Danforth, W.W. Originator: Foster, D.S. Publication_Date: 2014 Title: High-resolution geophysical data collected aboard the U.S. Geological Survey research vessel Rafael to supplement existing datasets from Buzzards Bay and Vineyard Sound, Massachusetts Series_Information: Series_Name: Open-File Report Issue_Identification: 2013-1020 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2013/1020/ Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20071005 Ending_Date: 20110413 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Pendleton and others, 2014 Source_Contribution: This report provided swath bathymetry for shallow zones along the nearshore and across Middle Ground, L'Hommediue, Hedge Fence, and Squash Meadow shoals within Vineyard and western Nantucket Sounds. These areas were surveyed with the RV Rafael in 2011. Swath bathymetry data were collected with an SEA SWATHplus 234-kilohertz (kHz) interferometric sonar system. Sidescan-sonar (acoustic-backscatter) data were acquired with a Klein 3000 dual-frequency (100 and 500 kHz) sidescan-sonar system. Source_Information: Source_Citation: Citation_Information: Originator: Poppe, L.J. Originator: McMullen, K.Y. Originator: Foster, D.S. Originator: Blackwood, D.S. Originator: Williams, S.J. Originator: Ackerman, S.D. Originator: Barnum, S.R. Originator: Brennan, R.T. Publication_Date: 2008 Title: Sea-floor character and sedimentary processes in the vicinity of Woods Hole, Massachusetts Edition: 1.0 Geospatial_Data_Presentation_Form: raster digital data Series_Information: Series_Name: Open File Report Issue_Identification: 2008-1004 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2008/1004/ Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20010101 Ending_Date: 20071119 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Poppe and others, 2008 Source_Contribution: This publication provides multibeam bathymetry for Woods Hole. Two 29-foot launches deployed from the NOAA Ship Whiting were used to acquire bathymetric and backscatter data during 2001. The bathymetric data were collected with a hull-mounted 240-kHz RESON 8101 shallow-water system aboard launch 1005. The sidescan-sonar data were acquired with a hull-mounted Klein T-5000 system operating at 455 kHz aboard launch 1014. Source_Information: Source_Citation: Citation_Information: Originator: National Oceanic and Atmospheric Administration Originator: National Ocean Survey Publication_Date: 2008 Title: Descriptive report, navigable area survey H11920, Vineyard Sound, Massachusetts, Gay Head to Cedar Tree Neck Edition: 1.0 Geospatial_Data_Presentation_Form: BAG files Series_Information: Series_Name: Descriptive Report Issue_Identification: H11920 Publication_Information: Publication_Place: Norfolk, VA Publisher: National Oceanographic and Atmospheric Administration - National Ocean Survey Online_Linkage: http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11920/ Online_Linkage: http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11920/DR/H11920.pdf Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20080715 Ending_Date: 20080908 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: NOAA, 2008 Source_Contribution: The Bathymetry Attributed Grid (BAG) files accompanying this publication provide the source bathymetry data for portions of Vineyard Sound around the Menemsha Bight. Two 29-foot launches deployed from the NOAA Ship Thomas Jefferson were used to acquire bathymetry during 2008 using hull-mounted 455-kHz RESON 8125 and 240-kHz RESON 8101 systems. Source_Information: Source_Citation: Citation_Information: Originator: National Oceanic and Atmospheric Administration Originator: National Ocean Survey Publication_Date: 2008 Title: Descriptive report, navigable area survey H11921, Vineyard Sound, Massachusetts, Sow and Pigs reef to Quicks Hole Edition: 1.0 Geospatial_Data_Presentation_Form: BAG files Series_Information: Series_Name: Descriptive Report Issue_Identification: H11921 Publication_Information: Publication_Place: Norfolk, VA Publisher: National Oceanographic and Atmospheric Administration - National Ocean Survey Online_Linkage: http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11921/ Online_Linkage: http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11921/DR/H11921.pdf Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20080806 Ending_Date: 20080908 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: NOAA, 2008 Source_Contribution: The BAG files accompanying this publication provide multibeam bathymetry for portions of Vineyard Sound around Cuttyhunk Island and Quicks Hole. Two 29-foot launches deployed from the NOAA Ship Thomas Jefferson were used to acquire bathymetry during 2008 using hull-mounted 455-kHz RESON 8125 and 240-kHz RESON 8101 systems. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Army Corps of Engineers - Joint Airborne Lidar Bathymetry Center of Expertise Publication_Date: 2009 Title: 2005 - 2007 US Army Corps of Engineers (USACE) Topo/Bathy Lidar: Maine, Massachusetts, and Rhode Island Geospatial_Data_Presentation_Form: digital point data Publication_Information: Publication_Place: Charleston, SC Publisher: NOAA National Ocean Service (NOS), Coastal Services Center (CSC) Online_Linkage: http://coast.noaa.gov/dataviewer/index.html?action=advsearch&qType=in&qFld=ID&qVal=116 Online_Linkage: ftp://coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12a/data/116 Type_of_Source_Media: digital point data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20070527 Ending_Date: 20070527 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: USACE-JABLTCX, 2009 Source_Contribution: The source lidar data for the very nearshore (< -5 m) region along the northern shoreline of Vineyard and western Nantucket Sounds. Lidar (Light Detection and Ranging) data were acquired with a SHOALS-1000T (for hydrographic & topographic data) using the Joint Airborne Joint Airborne LiDAR Bathymetry Center of Expertise (JALBTCX) lidar plane. These data are now publically available in LAS lidar format via NOAA's Digital Coast website. Source_Information: Source_Citation: Citation_Information: Originator: NOAA National Geophysical Data Center Publication_Date: 2015 Title: NOS Hydrographic Survey Data Geospatial_Data_Presentation_Form: tabular digital data Online_Linkage: http://ngdc.noaa.gov/mgg/bathymetry/hydro.html Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1938 Ending_Date: 1977 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: NOAA Single-Beam Soundings Source_Contribution: These data include NOAA lead-line and single-beam sonar soundings, which were used to cover areas where no swath bathymetry or lidar data exist. Process_Step: Process_Description: Collected and prepared non-USGS source datasets: NOAA data from NOS hydrographic surveys in the 1900s (lead-line and single-beam soundings) were downloaded from the NGDC website individually (http://maps.ngdc.noaa.gov/viewers/bathymetry/) in XYZ ASCII format; the data are referenced to Geographic NAD83 and Mean Lower Low Water. Data from NOAA NOS hydrographic surveys conducted since 2000 were also downloaded from the NGDC website. The 2000 era data were in either XYZ or BAG format, and referenced to UTM Zone 19N, and Mean Lower Low Water. The following NOAA NOS survey data were used: 1930s - H06348, H06349, H06350, H06468; 1940's - H06533; 1950s - H08170; 1960s - H08820, H08821, H08902, H08903, H08904; 1970s - H09645, H09646; 2000s - H11920, H11921. Datasets obtained in BAG format were imported into Fledermaus (v7.4.0) then exported to XYZ text format. USACE JALBTCX lidar data were obtained online from the NOAA Coastal Services Center Digital Coast Data Access Viewer, which provided an ftp download of a subset of the bathymetric lidar data within a defined area of interest. The data were delivered in XYZ format, and referenced to Geographic NAD83 and NAVD88. XYZ coordinates referenced to NAD 83 were projected to UTM Zone 19N using proj (v4.8.0). Source_Used_Citation_Abbreviation: NOAA single-beam soundings; NOAA, 2008; USACE-JABLTCX; 2014 Process_Date: 2014 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Wayne Baldwin 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 Country: USA Contact_Voice_Telephone: 508-548-8700 x2226 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: wbaldwin@usgs.gov Process_Step: Process_Description: Collected and prepared USGS source datasets: For swath bathymetry data sources from previously published USGS Open File Reports (including 2006-1357, 2008-1004, 2009-1001, 2012-1006, 2011-1184, and 2013-1020), XYZ formatted text files were exported from the same Caris Base surfaces used to export Esri format grids for publications. The Esri format grids can be downloaded from the publications listed in the Source Citations. They are referenced to UTM Zone 19N, and Mean Lower Low Water. Source_Used_Citation_Abbreviation: Poppe and others, 2007; Poppe and others, 2008; Poppe and others, 2010; Pendleton and others, 2012; Andrews and others, 2013; Pendleton and others, 2014 Process_Date: 2014 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Wayne Baldwin 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 Country: USA Contact_Voice_Telephone: 508-548-8700 x2226 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: wbaldwin@usgs.gov Process_Step: Process_Description: Using NOAA VDatum (v3.2), all of the source datasets referenced to tidal datums were converted from MLLW to NAVD88 vertical datum Source_Used_Citation_Abbreviation: All sources referenced to tidal datums Process_Date: 2014 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Wayne Baldwin 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 Country: USA Contact_Voice_Telephone: 508-548-8700 x2226 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: wbaldwin@usgs.gov Process_Step: Process_Description: Evaluated source data overlap and created subsets for contribution to composite surface: Overlap of the swath bathymetry and lidar datasets was evaluated using polygon feature classes representing the areal outlines of the published grids and points. Point feature retention was determined by the following preferential hierarchy; 1) USGS swath-interferometric data (2012-1006, 2011-1184, and 2013-1020), 2) NOAA-NOS multibeam data (from USGS Open File Reports 2006-1357, 2008-1004, 2009-1001, and NOS Descriptive Reports H11920, H11921), 3) USACE-JABLTCX Lidar, and 4) NOS leadline and single-beam. Polygon outlines of higher-ranked source datasets were used to spatially select coincident points from lower-ranked XYZ feature datasets and delete them. After redundant source XYZ feature data were eliminated, the remaining subsets were imported to an ArcGIS (v9.3) geodatabase as point feature classes. Source_Used_Citation_Abbreviation: all bathymetry sources Process_Date: 2014 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Wayne Baldwin 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 Country: USA Contact_Voice_Telephone: 508-548-8700 x2226 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: wbaldwin@usgs.gov Process_Step: Process_Description: An ArcGIS (9.3.1) Terrain Dataset was created (ArcToolbox > 3D Analyst Tools > Terrain > Create Terrain), all of the contributing point feature datasets and a polygon feature encompassing the input points (used as a hard clip) were added to the terrain (ArcToolbox > 3D Analyst Tools > Terrain > Add Feature Class to Terrain), and the terrain was constructed (ArcToolbox > 3D Analyst Tools > Terrain > Build Terrain). Source_Used_Citation_Abbreviation: bathymetric point features contributing to composite and encompassing polygon feature Process_Date: 2014 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Wayne Baldwin 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 Country: USA Contact_Voice_Telephone: 508-548-8700 x2226 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: wbaldwin@usgs.gov Process_Step: Process_Description: The composite bathymetry was converted from the Terrain Dataset to a 10 meter per pixel, floating point Esri Grid (vns10m_navd88) using the natural neighbors interpolation method (ArcToolbox > 3D Analyst Tools > Conversion > From Terrain > Terrain to Raster). During the conversion, the polygon area encompassing the input points was specified to clip the extent of the output grid (Environmental Settings > Raster Analysis Settings > Mask) Source_Used_Citation_Abbreviation: Composite bathymetry terrain and encompassing polygon feature Process_Date: 2014 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Wayne Baldwin 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 Country: USA Contact_Voice_Telephone: 508-548-8700 x2226 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: wbaldwin@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Grid Cell Row_Count: 2594 Column_Count: 5024 Vertical_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 10.000000 Ordinate_Resolution: 10.000000 Planar_Distance_Units: meters 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 Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257224 Vertical_Coordinate_System_Definition: Depth_System_Definition: Depth_Datum_Name: North American Vertical Datum of 1988 Depth_Resolution: 0.1 Depth_Distance_Units: meters Depth_Encoding_Method: Implicit coordinate Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: There are no attributes associated with this Esri ArcRaster Grid. Pixel values represent bathymetric depths in meters referenced to the North American Vertical Datum of 1988, and range from -0.1 to -32.8 m. Entity_and_Attribute_Detail_Citation: U.S. Geological Survey Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Wayne Baldwin 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 Country: USA Contact_Voice_Telephone: 508-548-8700 x2226 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: wbaldwin@usgs.gov Resource_Description: vns10m_navd88.zip from USGS Open File report 2016-1119. WinZip V. 14.5 file contains bathymetry from Vineyard and western Nantucket Sounds, MA and the associated metadata. 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: AIG Format_Version_Number: ArcMAP 9.3.1 Format_Specification: Esri grid Format_Information_Content: WinZip V. 14.5 file contains bathymetry from Vineyard and western Nantucket Sounds, MA and the associated metadata File_Decompression_Technique: WinZip or pkUnzip Transfer_Size: 16.61 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2016/1119/GIS_catalog/SourceData/bathy/vns10m_navd88.zip Network_Resource_Name: http://pubs.usgs.gov/of/2016/1119/ofr2016-1119-data_catalog.html Access_Instructions: Data can be downloaded via the World Wide Web (WWW) Fees: None Technical_Prerequisites: The grid contained in the ZIP file is available as an Esri binary grid. To utilize this data, the user must have a GIS software package capable of reading an Esri binary grid. Metadata_Reference_Information: Metadata_Date: 20150728 Metadata_Review_Date: 2016 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Wayne Baldwin 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 Country: USA Contact_Voice_Telephone: 508-548-8700 x2226 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: wbaldwin@usgs.gov 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