U.S. Geological Survey 2014 2.0 vector digital data Open-File Report 2012-1006 Woods Hole Coastal and Marine Science Center, Woods Hole, Massachusetts U.S. Geological Survey, Coastal and Marine Geology Program https://doi.org/10.3133/ofr20121006 http://pubs.usgs.gov/of/2012/1006/GIS/shapefile/VS_5mCntr_V2.zip http://pubs.usgs.gov/of/2012/1006/appendix.html Brian D. Andrews Seth D. Ackerman Wayne E. Baldwin David S. Foster William C. Schwab 2014 2.0 Open-File Report 2012-1006 Reston, VA U.S. Geological Survey http://pubs.usgs.gov/of/2012/1006/ 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 Coastal and Marine 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 of coastal Massachusetts, primarily in water depths of 3-30 meters deep. 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/). The data collected in the study area located in Vineyard Sound Massachusetts includes high-resolution geophysics (bathymetry, backscatter intensity, and seismic reflection). The data were collected during three separate surveys conducted between 2009 and 2011and cover approximately 340 square kilometers of the inner continental shelf. More information about the individual USGS surveys conducted as part of the Vineyard Sound project can be found on the Woods Hole Coastal and Marine Science Center Field Activity webpage: 2009-002-FA: http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2009-002-FA 2010-004-FA: http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2010-004-FA 2011-004-FA: http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2011-004-FA The purpose of this polyline shapefile is to display generalized depth contours at 5 meter intervals derived from bathymetry collected by the USGS during surveys 2009-002-FA, 2010-004-FA, and 2011-004-FA in Vineyard Sound Massachusetts. 20090602 20110517 ground condition of individual surveys on the following dates: 2009062-20090603; 20100521-20100604; 20110507-20110509; 20110514-20110517 Complete As needed -71.009788 -70.436149 41.539964 41.289937 USGS Metadata Identifier USGS:65301993-f045-4059-a3b5-6238123b6b14 None U.S. Geological Survey USGS Coastal and Marine Geology Program CMGP Woods Hole Coastal and Marine Science Center WHSC Bathymetry Seafloor Marine Geology Swath Bathymetry Interferometric Sonar SWATHplus Polyline Shapefile Contours field activity serial number 09002 field activity serial number 10004 field activity serial number 11004 field activity number 2009-001-FA field activity number 2010-004-FA field activity number 2011-004-FA M/V Megan T. Miller M/V Scarlett Isabella USGS InfoBank ID M-2-09-BZ USGS InfoBank ID U-4-10-BZ USGS InfoBank ID U-04-11-BZ ISO 19115 Topic Category oceans elevation USGS Thesaurus bathymetry contouring sea-floor characteristics geospatial datasets USGS Geographic Names Information System North America United States Massachusetts Cape Cod Atlantic Ocean Vineyard Sound Nantucket Sound None Seafloor sea floor None 2009 2010 2011 None 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. Brian Andrews U.S. Geological Survey Geographer mailing and physical address

384 Woods Hole Rd.

Woods Hole MA 02543-1598 USA 508-548-8700 x2348 508-457-2310 bandrews@usgs.gov http://pubs.usgs.gov/of/2012/1006/GIS/browse_jpg/VS_5mCntr_V2.jpg Thumbnail image of depth contours of gridded bathymetry collected in the Vineyard Sound Massachusetts survey area. JPEG Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.4095 The processing steps for generalization are described in the data quality section below. Bathymetric contours were generalized, simplified, and smoothed to improve the cartographic display of contours. As a result of this process small areas with depth values of less than 5 meters were omitted though the generalization, smoothing and simplification process. Generalized contours were produced in some areas of "no data" (in the input grid)as a result of the generalization process. Small depth contours less than 500 meters in length were removed to improve cartographic display. Step 1. Generalize the input depth raster: The input raster (vs_bath5m_v2) was smoothed using the ArcGIS 9.3 geoprocessing step described below: Smooth input grid using a 5x5 mean filter with the Block Statistics Tool in ArcToolbox (ver. 9.3) Input raster = vs_bath5m_v2, Output raster = BlockSt5m_v2, Neighborhood= Rectangle, Neighborhood Settings = 5 x 5, cell Statistics type = Mean, Ignore NoData in calculations=selected. vs_bathv5m_v2 (This publication) 20140327 Brian Andrews U.S. Geological Survey Geographer mailing and physical address

384 Woods Hole Rd.

Woods Hole MA 02543-1598 USA 508-548-8700 x2348 508-457-2310 bandrews@usgs.gov Step 2. Calculate generalized depth contours from smoothed depth grid using ArcToolbox (ver. 9.3). Both input depth grid and output feature class are in the UTM Zone 19, WGS 84 Coordinate System. Part 1) Create 5 meter contours using Contour tool: Contour Input raster = BlockSt5m_v2, Output polyline features = VS5mCntr_50m_v2 Contour Interval = 5, Base Contour = 5, Z Factor = 1, Raster Analysis cell size = 50m, Snap Raster = vs_bathv2_5m. Part 2) Simplify Line: Input Features = VS5mCntr_50m_v2, Output Feature Class = VS5mCntr_50m_Simple100_v2, Simplification Algorithm = Bend_Simplify, Reference Baseline = 100, Meters, Check for topological errors and Resolve topological errors options were both selected. Part 3) Smooth Line: Input Features = VS5mCntr_50m_Simple100_v2, Output Feature Class = VS5mCntr_50_SimpleSmooth_v2, Smoothing Algorithm = Bezier_Interpolation, Handling Topological Errors = was not selected. 20140327 Brian Andrews U.S. Geological Survey Geographer mailing and physical address

384 Woods Hole Rd

Woods Hole MA 02543-1598 USA 508-548-8700 x2348 508-457-2310 bandrews@usgs.gov Step 3. Remove all contours less than 500 meters in length. Add new field "Length_m" of type "double to the attribute table using the context menu in ArcCatalog (ver 9.3). In ArcMap (ver 9.3) select new "Length_m" attribute and populate attribute using the "calculate geometry" context menu. All contours with length of 500 meters or greater were then selected using the "select by attributes" feature in ArcMap (ver. 9.3). The shapefile with the selected features was exported to a new shapefile using the context menu within ArcMap (ver. 9.3) table of contents with the following parameters "Export Data" Export= Selected features, Use the same coordinate system as: the data frame (set to GCS_WGS_1984), output shapefile= VS_5mCntr_V2.shp. Remove the following three attributes using the "Delete Field in ArcCatalog (ver 9.3) ID, MaxSimpTol, MinSimpTol. They were produced as part of the generalization process and are not required for further analysis. 20140327 Brian Andrews U.S. Geological Survey Geographer mailing and physical address

384 Woods Hole Rd

Woods Hole MA 02543-1598 USA 508-548-8700 x2348 508-457-2310 bandrews@usgs.gov Edits to the metadata were made to fix any errors that MP v 2.9.32 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. Other minor edits were probably performed (title, publisher, publication place, etc.). Fixed a link to the project page in the abstract. 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. 20160525 U.S. Geological Survey VeeAnn A. Cross Marine Geologist mailing and physical address

384 Woods Hole Rd.

Woods Hole MA 02543 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov USGS Thesaurus keywords added to the keyword section. 20180720 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Crossref DOI link was added as the first link in the metadata. 20191118 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Added keywords section with USGS persistent identifier as theme keyword. 20200908 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Vector String 189 0.000001 0.000001 Decimal degrees D_WGS_1984 WGS_1984 6378137.000000 298.257224 Mean lower low water 5.0 meters Explicit depth coordinate included with horizontal coordinates VS_5mCntr_V2 5 meter bathymetric contours USGS FID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Feature geometry. Esri Coordinates defining the features. CONTOUR Depth of contour in meters below mean lower low water. USGS -35 -10 meters Length_m Length of feature in meters (UTM19, WGS 84) USGS 502.2 53,808.2 Brian Andrews U.S. Geological Survey Geographer mailing and physical address

384 Woods Hole Rd.

Woods Hole MA 02543 USA 508-548-8700 x2348 bandrews@usgs.gov Downloadable Data 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. Shapefile ArcGIS 9.3 Esri polyline shapefile depth contours at 5 meter intervals and associated metadata WinZip (v. 14.0) 0.262 http://pubs.usgs.gov/of/2012/1006/GIS/shapefile/VS_5mCntr_V2.zip Data can be downloaded via the World Wide Web (WWW) DVD-ROM 4.75 Gbytes UDF none This zip file contains data available in Environmental Systems Research Institute (Esri) shapefile format. The user must have software capable of uncompressing the WinZip file and displaying the shapefile. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing the data. A free data viewer, ArcExplorer, capable of displaying the data is available from Esri at www.esri.com. 20240318 Brian Andrews U.S. Geological Survey Geographer mailing and physical address

384 Woods Hole Rd.

Woods Hole MA 02543-1598 USA 508-548-8700 x2348 508-457-2310 whsc_data_contact@usgs.gov The metadata contact email address is a generic address in the event the person is no longer with USGS. (updated on 20240318) FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time