Page C. Valentine Tanya S. Unger Jessica L. Baker Chris Polloni 1999 1.0 maps, raster digital data, vector data Open-File Report 99-363 Woods Hole Coastal and Marine Science Center, Woods Hole, MA U.S. Geological Survey, Coastal and Marine Hazards and Resources Program https://doi.org/10.3133/ofr99363 https://pubs.usgs.gov/of/1999/of99-363/html/quad13.htm Page C. Valentine Tanya S. Unger Jessica L. Baker Christopher F. Polloni 1999 1.0 sun-illuminated sea floor topographic imagery Open-File Report 99-363 Reston, VA U.S. Geological Survey The full title is Sun-illuminated sea floor topographic maps and perspective view imagery of Quadrangles 1-18, Stellwagen Bank National Marine Sanctuary off Boston, Massachusetts. https://doi.org/10.3133/ofr99363 This data set contains the topographic contours and sun-illuminated imagery of Quadrangle 13. This coverage is one in a series of 18 quadrangles in the Stellwagen Bank National Marine Sanctuary region. The project is designed to provide detailed maps of the Stellwagen Bank region's environments and habitats and the first complete multibeam bathymetric and sea floor characterization maps of a significant region of the shallow EEZ. Development of a GIS database of sea floor imagery that is accessible to scientists, policymakers, managers, and the general public. Data were collected on four cruises over a two year period from the fall of 1994 to the fall of 1996. The surveys were conducted aboard the Canadian Hydrographic Service vessel Frederick G. Creed, a SWATH (Small Waterplane Twin Hull) ship that surveys at speeds of 16 knots. The multibeam data were collected utilizing a Simrad Subsea EM 1000 Multibeam Echo Sounder (95 kHz) that is permanently installed in the hull of the Creed. 19940815 19980922 Multibeam data were collected from the years of 1994 to 1996. Contours and imagery were generated and edited through 1998. complete Contours are updated and maintained as needed. -70.59999848 -70.41131169 42.68060299 42.56115956 USGS Metadata Identifier USGS:fa0106bd-bc99-4360-80c7-cca9aad239e8 None Geographic Information Systems GIS Woods Hole Field Center WHFC United States Geological Survey USGS SIMRAD SUBSEA EM 1000 Frederick G. CREED Swath Bathymetry Multibeam Echo Sounder Topographic data Sea floor topography Bathymetry Sun-illuminated imagery Shaded relief imagery ISO 19115 Topic Category geoscientificInformation imageryBaseMapsEarthCover oceans elevation USGS Thesaurus sea-floor characteristics multibeam sonar bathymetry topography None Massachusetts MA Stellwagen Bank National Marine Sanctuary SBNMS Shallow EEZ EEZ Gulf of Maine Atlantic Ocean Ocean None None. U.S. Geological Survey, National Oceanic and Atmospheric Administration, Canadian Hydrographic Service, University of New Brunswick OSF1 UNIX, ARC/INFO version 7.0.4 Page C. Valentine Tanya S. Unger Jessica L. Baker 2001 1 map IMAP 2713 Reston, VA U.S. Geological Survey scale 1:25,000, 1 sheet. The publication of this cross-reference was likely in the final stages of being released when the series report publication this metadata record describes was released, hence the apparent discrepancy in the publication dates. The original publication date in the metadata for this cross-reference was 1999, but the USGS publication site indicates a 2001 publication date. https://doi.org/10.3133/i2713 Page C. Valentine Jessica L. Baker Tanya S. Unger Edwin T. Roworth 1997 1 map Open-File Report 97-726 Reston, VA U.S. Geological Survey scale 1:25,000, 1 sheet https://doi.org/10.3133/ofr97726 None None +-3 meters +-3 meters Simrad EM1000 Frederick K Creed Unpublished material none 25000 digital UNIX tar files on CD-ROM 1994 1996 not available from original metadata but assumed to be data acquisition date range USGS information not available from original metadata - but assumption is that it refers to the original collected multibeam data Multibeam data were processed using SwathEd, a suite of multibeam software editing and display tools developed by Dr. John Hughes Clarke of the Ocean Mapping Group, University of New Brunswick (UNB). The navigation and topographic data were both edited using this software. Tidal corrections were obtained from NOAA's Boston Tide Gauge (Station 8443970) and merged into the data set using UNB's tidal routines. The topographic information was converted into an ascii textfile containing lat, long, and depth fields, using a script created by Bill Danforth at the U.S. Geological Survey. The ascii file was brought into Arc/Info, and a grid was generated and processed using ESRIs Arc/Info version 7.0.4 software. A point coverage containing depth values was created using the routine point-generate. The grid was created based on the depth values for each of the points using the command pointgrid. The grid was filtered with a 9 by 9 focalmedian filter. Contours were generated using latticecontour. All editing and edgematching was done by hand using arcedit. The shaded relief images shown here were created using a light source that is 45 degrees above the horizon from an azimuth of 350 degrees. The vertical exaggeration in the images is four times. In effect, topographic relief is enhanced by illuminating the sea floor from a position 10 degrees west of north so that shadows are cast on the southern flanks of seabed features. Some features in the images are artifacts of data collection. They are especially noticeable where the seabed is smooth and include small highs and lows and unnatural-looking features and patterns that are oriented parallel or perpendicular to survey tracklines. For a depiction of the topographic contours alone, and for an explanation of survey and topographic data processing methods, see the companion maps by Valentine and others (1997a-r). Topographic contour maps of all 18 quadrangles of the map series are available on a CD-ROM in EPS, PS, Arc export, and PDF file formats (Valentine and others, 1998). Blank areas represent places where no data exists. Unknown William Danforth USGS, Coastal and Marine Geology Geologist mailing and physical address

384 Woods Hole Rd.

Woods Hole MA 02543 USA 508-457-2274 508-457-2310 bdanforth@usgs.gov This metadata file was edited for inclusion in the CMHRP metadata inventory. These edits included but are not limited to: Added additional information to the citation and larger work citation including the series information and online links as well as fixing other elements; added additional geospatial presentation forms; removed elements for time (publication time, beginning time etc); added the ISO 19115 Topic Category theme keywords; added USGS Thesaurus theme keywords; flushed out the information in the cross-references including adding online links; flushed out information in the source contribution based on some assumptions from knowledge of the work; removed blank elements that aren’t required; updated the distribution liability with an FSP approved statement; added the different formats of the available data as well as links to download the various files; added technical prerequisites explaining that the CD-ROM distribution, although available for all the formats, was only specified on the first digital format; updated the metadata date; provided a generic email and contact instructions in the metadata contact section, but did not edit the contact person. Compare the metadata dates to determine which metadata file is most recent in the event more than one metadata is discovered. A persistent identifier (PID) was added to the metadata in the thesaurus section. (20250909) 20250909 U.S. Geological Survey VeeAnn A. Cross Marine Geologist mailing and physical address

384 Woods Hole Rd.

Woods Hole MA 02543-1598 USA (508) 548-8700 x2251 (508) 457-2310 vatnipp@usgs.gov .00003 .00003 Decimal Degrees North American Datum of 1983 GRS1980 6378137 298.257 Local surface 1 meters Attribute values Raw Simrad EM 1000 echo sounder data. Simrad Subsea A/S, Horten, Norway USGS, Woods Hole Field Center Page Valentine mailing and physical address

384 Woods Hole Road

Woods Hole MA 02543-1598 USA (508) 457-2239 (508) 457-2310 pvalentine@usgs.gov, Data are available in a number of formats. The map is available in Encapsulated Postscript (EPS, Postscript(ps), Portable Document File (PDF). The sun-illuminated bathymetry image appropriate for a GIS is available in TIFF image format with an accompany TIFF world file. The 5-m contours are available in Arc/Info Export Format (E00). Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. E00 Arc/Info version 7 Arc/Info interchange format. 1 https://pubs.usgs.gov/of/1999/of99-363/arc/quad13to.e00 https://pubs.usgs.gov/of/1999/of99-363/html/quad13.htm https://doi.org/10.3133/ofr99363 The first link is the direct download of the file, the second link is to the landing page where individual files can be downloaded, the third link is to the DOI landing page of the publication. CD-ROM ISO 9660 TIFF Arc/Info version 7 Sun-illuminated TIFF image of the sea floor topography. Also has a world file to enable display in GIS. 2 https://pubs.usgs.gov/of/1999/of99-363/tif/quad13su.tif https://pubs.usgs.gov/of/1999/of99-363/tif/quad13su.tfw https://pubs.usgs.gov/of/1999/of99-363/html/quad13.htm https://doi.org/10.3133/ofr99363 The first link is the direct download of the TIFF file, the second link is to download the TIFF world file, the third link is to the landing page where individual files can be downloaded, the fourth link is to the DOI landing page of the publication. EPS CorelDraw version 7.375 Encapsulated Postscript file of the map. ZIP 8 https://pubs.usgs.gov/of/1999/of99-363/postscrp/q13smeps.zip https://pubs.usgs.gov/of/1999/of99-363/html/quad13.htm https://doi.org/10.3133/ofr99363 The first link is the direct download of the file in a compressed zip file, the second link is to the landing page where individual files can be downloaded, the third link is to the DOI landing page of the publication. PS unknown Postscript file of the map. 5 https://pubs.usgs.gov/of/1999/of99-363/postscrp/quad13su.ps https://pubs.usgs.gov/of/1999/of99-363/html/quad13.htm https://doi.org/10.3133/ofr99363 The first link is the direct download of the file, the second link is to the landing page where individual files can be downloaded, the third link is to the DOI landing page of the publication. PDF unknown Portable Document File format file of the map. 18 https://pubs.usgs.gov/of/1999/of99-363/pdf/quad13su.pdf https://pubs.usgs.gov/of/1999/of99-363/html/quad13.htm https://doi.org/10.3133/ofr99363 The first link is the direct download of the file, the second link is to the landing page where individual files can be downloaded, the third link is to the DOI landing page of the publication. none 20250909 USGS Woods Hole Field Center 384 Woods Hole Road Woods Hole, MA 02543-1598 William Danforth mailing address

384 Woods Hole Road

Woods Hole MA 02543-1598 USA (508) 457-2274 whsc_data_contact@usgs.gov The metadata contact email address is a generic address in the event the person is no longer with the U.S. Geological Survey. FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 None None