U.S. Geological Survey
2013
3 arc second digital elevation model of the Gulf of Maine
gridded digital data
Open-File Report
2011-1127
Woods Hole Coastal and Marine Science Center, Woods Hole, MA
U.S. Geological Survey, Coastal and Marine Geology Program
https://doi.org/10.3133/ofr20111127
http://geoport.whoi.edu/thredds/gom_bathy.html?dataset=bathy/gom03_v1_0
Erin R. Twomey
Richard P. Signell
2013
Construction of a 3-arcsecond Digital Elevation Model for the Gulf of Maine
Open-File Report
2011-1127
Reston, VA
U.S. Geological Survey
http://pubs.usgs.gov/of/2011/1127/
A gap-free, region-wide combined topographic/bathymetric grid at a fixed resolution is useful for describing the topography of the seafloor and for a wide variety of oceanographic studies. Generating a bathymetric grid of this type consists of (1) locating and retrieving digital datasets from a variety of sources, (2) correcting errors and determining the dataset that best represents the topography in specific regions, (3) converting the depth data to common horizontal and vertical datums, and (4) selecting and applying a gridding algorithm to create the final seamless grid.
The purpose of these data are to provide a complete, higher resolution (than previously available) topography dataset to aid a variety of seafloor and oceanographic studies.
1859
2010
ground condition of the original data-sets
Annually
-71.5
-63.0
46.0
39.5
USGS Metadata Identifier
USGS:1436c950-2371-4cd6-9f7c-e4f9c106faec
None
U.S. Geological Survey
USGS
Bathymetry
Digital Bathymetry
Sea Floor
Coastal and Marine Geology Program
CMGP
Woods Hole Coastal and Marine Science Center
WHCMSC
Gridded Data
Depth
Sea Floor Topography
Morphology
National Oceanic and Atmospheric Association
NOAA
National Aeronautics and Space Administration
NASA
Gulf of Maine Mapping Initiative
GOMMI
Naval Oceanographic Office
University of New Hampshire
Canadian Hydrographic Service
ISO 19115 Topic Category
oceans
elevation
geoscientificInformation
USGS Thesaurus
bathymetry
sea-floor characteristics
image mosaics
marine geophysics
geospatial datasets
None
United States
New England
Northwestern Atlantic Ocean
Gulf of Maine
Massachusetts Bay
Buzzards Bay
Bay of Fundy
Vineyard Sound
Nantucket Sound
Grand Manan Basin
Jordan Basin
Emerald Basin
Nova Scotian Shelf
Browns Bank
Jeffrey's Ledge
Wilkinson Basin
Georges Basin
Northeast Channel
Georges Bank
Nantucket Shoals
Great South Channel
Stellwagen Bank
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 as the originator of the dataset.
U.S. Geological Survey
Richard P. Signell
mailing and physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
USA
508-548-8700 x2229
508-547-2310
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; MATLAB Version 7.7.0.471 (R2008b);
ESRI ArcGIS 9.2 (Build 1500); FWTools 2.4.7; Generic Mapping Tools 4.2.0; PROJ.4; Cygwin 2.573.2.2
Naval Oceanographic Office/Naval Research Laboratory
1996
Digital Bathymetric Data Base Variable Resolution (DBDB-V)
Unknown
Naval Oceanographic Office, Naval Research Laboratory, Oceanography Division, Ocean Dynamics and Prediction Branch
http://www7320.nrlssc.navy.mil/DBDB2_WWW/dbdb5/NRLCOM_dbdb2.html
JALBTCX (Joint Airborne Lidar Bathymetry Technical Center of eXpertise)
20090918
2007 US Army Corps of Engineers (USACE) Topo/Bathy Lidar: Maine, Massachusetts, and Rhode Island
Charleston, SC
NOAA's Ocean Service (NOS), Coastal Services Center (CSC)
This data set has been extracted from one much larger. See the URL for the location of this larger data set.
http://www.csc.noaa.gov/lidar
Ed Roworth
Richard P. Signell
1998
Construction of Digital Bathymetry for the Gulf of Maine
Data Series
of98-801
Reston, VA
U.S. Geological Survey
http://pubs.usgs.gov/of/1998/of98-801/
Bradford Butman
Page C. Valentine
T.J. Middleton
W.W. Danforth
2007
A GIS Library of multibeam data for Massachusetts Bay and the Stellwagen Bank National Marine Sanctuary, Offshore of Boston, Massachusetts.
Data Series
U.S. Geological Survey Data Series 99, Version 1.0
Reston, VA
U.S. Geological Survey
http://pubs.usgs.gov/ds/99/
National Oceanic and Atmospheric Administration National Geophysical Data Center (NOAA/NGDC)
Unknown
National Ocean Service Hydrographic Survey Data
Unknown
National Oceanic and Atmospheric Administration National Geophysical Data Center (NOAA/NGDC)
http://www.ngdc.noaa.gov/mgg/bathymetry/hydro.html
Gulf of Maine Mapping Initiative (GOMMI)
Unknown
Gulf of Maine Mapping Initiative (GOMMI) Coverage Map
Unknown
Gulf of Maine Mapping Initiative (GOMMI)
http://www.gulfofmaine.org/gommi/
W.H.F. Smith
D.T. Sandwell
2009
Global Seafloor Topography from satellite altimetry and ship depth soundings
version 12.1
San Diego, California
University of California San Diego Global Topography
Smith, W. H. F., and D. T. Sandwell, Global seafloor topography from satellite altimetry and ship depth soundings, Science, v. 277, p. 1957-1962, 26 Sept., 1997.
http://topex.ucsd.edu/cgi-bin/get_data.cgi
University of New Hampshire Center for Coastal and Ocean Mapping/Joint Hydrographic Center (CCOM/JHC)
2005
Atlantic North Bathymetry, Atlantic Far North Bathymetry
Durham, NH
University of New Hampshire Center for Coastal and Ocean Mapping/Joint Hydrographic Center (CCOM/JHC)
http://ccom.unh.edu/theme/law-sea
National Oceanic and Atmospheric Administration National Geophysical Data Center (NOAA/NGDC), National Ocean Service (NOS)
1978
NOS Scanned Bathymetry and Fishing Maps
Uknown
National Oceanic and Atmospheric Administration National Geophysical Data Center (NOAA/NGDC), National Ocean Service (NOS)
Additional publications dates of the maps are 1980 and 1983
http://www.ngdc.noaa.gov/mgg/bathymetry/maps/area1.html
U.S. Geological Survey (USGS), EROS Data Center
1999
National Elevation Dataset
Sioux Falls, SD
U.S. Geological Survey
http://ned.usgs.gov/
International Centre for Tropical Agriculture (CIAT)
2008
Shuttle Radar Topography Mission (SRTM) 90m Digital Elevation Data
version 4.1
Unknown
Consortium for Spatial Information (CGIAR-CSI)
http://seamless.usgs.gov/products/srtm3arc.php
Digital and non-digital bathymetry data were sought in an effort to compile as many quality bathymetry data sets as possible for the Gulf of Maine region. All input data have gone through a series of quality assurance procedures.
All data were quality checked for accuracy. Any anomalies present in the final digital bathymetry grid surface may be a result of the tension option chosen for the gridding algorithm.
This gridded data format file is complete and contains all digital bathymetry data used to create the 3-arcsecond digital bathymetry grid of the Gulf of Maine. These data adequately represented the bathymetry of the Gulf of Maine at the time of grid creation. Remaining gaps in these data, if applicable, are a consequence of non-existing data or existing data that did not meet quality assurance standards.
Bathymetry and topographic data have been acquired from 1859 to 2010, the horizontal accuracy of which varies with respect to data source from which the original data were acquired. Respect to data source from which the non-digital were digitized, the fishing charts and nautical charts, and the time period.
Bathymetry and topographic data have been acquired from 1859 to 2010, the vertical accuracy of which varies with respect to data source from the original data were acquired. Topographic data are referenced vertically to the NAVD88 datum.
Data Compilation: Bathymetry data were sought in an effort to compile as many quality bathymetry soundings as possible for the Gulf of Maine region. Digital bathymetry were acquired from: United States Geological Survey(USGS), National Oceanic and Atmospheric Association (NOAA) National Aeronautics and Space Administration (NASA), Gulf of Maine Mapping Initiative (GOMMI), Naval Oceanographic Office, University of New Hampshire, and Canadian Hydrographic Service . In order to fill gaps and supplement these data, images of fishing and nautical charts acquired from National Oceanic and Atmospheric Association (NOAA) were georeferenced and contours were digitized in ArcMap 9.2. In the case of digitizing contours, the contours were subsequently converted to points in ArcGIS 9.2 using XToolPro (v. 4.1.0 (Build 375))) by generating a points randomly along the line. The Generic Mapping Tool command 'blockmedian' was used to resample the data at intervals of six (6) arc-seconds. In addition to bathymetry data sources, land elevation data were acquired from United States Geological Survey(USGS), NASA (National Aeronautics and Space Administration), NGA (National Geospatial-Intelligence Agency, and NOAA's Ocean Service (NOS), Coastal Services Center (CSC).
2009
Richard P. Signell
U.S. Geological Survey
Research Associate
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543-1598
USA
508-548-8700 x2229
508-457-2310
rsignell@usgs.gov
Data Formatting: All data were converted to ASCII XYZ format including decimal degrees, positive up. The USGS Massachusetts Bay Bathymetry data, the National Elevation Data (NED), and the Shuttle Radar Mission Topography (SRTM version 4.1) were all in ESRI binary grid format. The Geospatial Data Abstraction Library (GDAL) tool gdal_translate was used to convert these data to the gridded file format. The conversion from Gridded Data Format to ASCII XYZ was done using the GMT command 'grd2xyz'. The Northwest Atlantic Dataset in the Self Describing Structure (SDS) architecture utilized an SDS toolset to convert the data to ASCII XYZ format. Although in ASCII format, the NOAA Coastal Services Center Lidar had to be reformatted from a comma-delimited text file to ASCII XYZ. The following data sets underwent a horizontal datum transformation before being formatted to ASCII XYZ: USGS Massachusetts Bay, USGS Middle Ground Shoals, NED, and SRTM.
2009
Richard P. Signell
U.S. Geological Survey
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543-1598
USA
508-548-8700 x2229
508-457-2310
rsignell@usgs.gov
Manual Buffering and Clipping: NGDC/NOAA Hydrographic Soundings with depths greater than 400 meters were eliminated to avoid producing artifacts caused by data overlapping with deeper water, higher resolution data sets such as Smith and Sandwell (version 12.1) and the University of New Hampshire. This was done by mapping the surveys in ArcMap 9.2 to compare the spatial extent with the deeper water data. A buffer of 1000 meters was applied to the deep water data. Any NOAA survey point lying within the buffer was clipped from the data. The Gulf of Maine Mapping Initiative (GOMMI) data had to be processed to a coarser resolution of 30 meters due to the large size of the 5 meter resolution files. This procedure was done to increase the proficiency and speed of the gridding algorithm. The large data sets cause the algorithm to bog down and stop all together during initial processing. Generic Mapping Tools (GMT) blockmedian was used to decrease the resolution from 5 meters to 30 meters using a grid spacing of 30 meters for the region of interest (71.5 - 63.0 W and 39.5 - 46.0 N). A buffer of 1000 meters was applied to any higher resolution data overlapping the Smith and Sandwell Global Topography data. If any of the Smith and Sandwell data fell within the buffer, it was clipped (removed) to avoid producing artifacts during the surface interpolation of the final digital bathymetry grid. The Olex data were clipped to remove any points that fell within a 1000 meter buffer around the NWATL data to avoid producing artifacts. The clipping was done by using ArcMap 9.2 "near" tool from the ArcMap ArcToolbox Analysis tools. Any National Elevation Data (NED) points falling within the buffer were removed from the final data set to ensure there was no overlap between the data sets. This same method was used with the NOAA CSC Coastal Lidar data. Any National Elevation Data (NED) points falling within the buffer were removed from the final input data-set.
2009
Richard P. Signell
U.S. Geological Survey
mailing and physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
USA
508-548-8700 x2229
508-457-5310
rsignell@usgs.gov
Horiztonal Datum Transformation: The final horizontal coordinate system chosen for this work is geographic, NAD83. The USGS Massachusetts Bay bathymetry data used the GDAL tool gdalwarp to reproject the data from the original Mercator, NAD83 projection to geographic, NAD83. After the reprojection, the Generic Mapping Tool (GMT) grd2xyz was used to convert the gridded data format to ASCII XYZ. The Gulf of Maine Mapping Initiative Data (GOMMI) used the PROJ 4 Cartographic Projection library to reproject the UTM, Zone 19, NAD83 data to geographic, NAD83. The USGS Middle Ground Shoal bathymetry data used GDAL's gdalwarp tool to reproject the data from UTM, Zone 19, WGS84 to Geographic, NAD83.
2009
Richard P. Signell
U.S. Geological Survey
mailing and physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
USA
508-548-8700 x2229
508-457-2310
rsignell@usgs.gov
Vertical Datum Transformation: All depth values were converted to NAVD88 using information from the NOAA VDatum Project (http://vdatum.noaa.gov/). The VDatum software does not extend into Canadian waters, but the underlying ADCIRC tidal model does. The MLLW and MLW surfaces from the model were used to convert depths from the MLW or MLLW datum into the tidal model datum. The depths were further transformed into the NAVD88 datum by subtracting 0.09 m, the median value of NAVD88 values above the tidal model datum obtained at five long-term tide gauges in the Gulf of Maine. The maximum cumulative uncertainty from these transformations is estimated to be 0.13 m (VDatum Team, 2011).
2009
Richard P. Signell
U.S. Geological Survey
mailing and physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
USA
508-548-8700 x2229
508-457-2310
rsignell@usgs.gov
Grid Input: Combine all the data into a single XYZ file using AWK.
2009
Richard P. Signell
U.S. Geological Survey
mailing and physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
USA
508-547-8700 x2229
508-457-2310
rsignell@usgs.gov
Sub-region Processing: Clip ASCII XYZ data into 1.2 by 1.2 degree squares, which split total coverage area into 7 rows of latitude and 9 columns of longitude. This was done using MATLAB and AWK. Each sub-region was run through pre-filtering process using the GMT software tool blockmedian. Blockmedian reads in the ASCII XYZ values: longitude, latitude, and depth, along with the user specified region of interest and desired grid spacing. For the Gulf of Maine region, the region of interest was 71.5 to 63.0 W and 39.5 to 46.0 N and the grid spacing was 3-arcseconds. Each working sub-region was then run through GMT surface algorithm to create an adjustable tension continuous curvature surface. The construction of the Gulf of Maine grid used a tension factor of 0.35. The aspect ratio was set to 0.75, the convergence limit was set to 0.1, and the grid spacing was chosen as 3-arcseconds for the region of interest: 71.5 to 63.0 W and 39.5 to 46.0 N.
2012
Richard P. Signell
U.S. Geological Survey
mailing and physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
USA
508-547-8700 x2229
508-457-2310
rsignell@usgs.gov
Sub-region Cropping: Crop the sub-regions from 1.2 by 1.2 to 1 by 1 degree. The continuous surface grid of each subregion was then clipped to 1 degree by 1 degree squares using the Generic Mapping Tool (GMT) grdcut. Grdcut works by extracting the user specified region from an existing grid file. For example, the sub-region 69.5 to 68.5 W and 41.0 to 42.0 N was extracted from working sub-region 69.6 to 68.4 W and 40.9 to 42.1 N.
2012
Richard P. Signell
U.S. Geological Survey
mailing and physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
USA
508-547-8700 x2229
508-457-2310
rsignell@usgs.gov
Grid Cell Conversion: Convert grid cells from grid-line registered to pixel-registered. The Generic Mapping Tool command grdedit was used to modify the content of the final sub-regions of the digital bathymetry grid. This was done by specifying the "-T" option, which makes the necessary changes in the header to convert from grid-line registered to a pixel-registered grid, or vice-versa. This processing step was necessary to assure no visible seams once the final product was pasted together. The grids had to be assembled exactly on the edges in order to provide a seamless image. Content of the final sub-regions of the digital bathymetry grid. This was done by specifying the "-T" option, which makes the necessary changes in the header to convert from grid-line registered to a pixel-registered grid, or vice-versa. This processing step was necessary to assure no visible seams once the final product was pasted together. The grids had to be assembled exactly on the edges in order to provide a seamless image.
2012
Richard P. Signell
U.S. Geological Survey
mailing and physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
USA
508-547-8700 x2229
508-457-2310
rsignell@usgs.gov
Grid Assembly: The final digital bathymetry grid was assembled by pasting the sub-regions together on a common edge. This was done using Generic Mapping Tool's grdpaste. The user specifies two input grids and a single output grid file name. Grdpaste searches for the common edge and pastes the two grids together to form the final grid. Since there were many sub-regions of the Gulf of Maine, a pasting method had to be followed. Sub regions 1 and 2 of a specific row were pasted together as the base grid. Grdpaste was then done iteratively along each row, pasting the western-most sub-region adjacent to the adjacent sub-region to the east until each row was complete. Grdpaste was then done to each full row using the same method working from the southern-most row adding adjacent rows to the north.
2012
Richard P. Signell
U.S. Geological Survey
mailing and physcial
384 Woods Hole Road
Woods Hole
MA
02543-1598
USA
508-547-8700 x8700
508-457-2310
rsignell@usgs.gov
The final grid grid file was uploaded to the THREDDS server where additional information was added to the file by virtue of NcML in the THREDDS catalog. This NetCDF file, downloaded from the THREDDS server is what is available.
2012
gom03_v1_0.nc
GDAL version 1.9.2 (part of OSgGeo4W) on a Windows 7 machine was used to convert the NetCDF file to a GeoTIFF image using the following command: gdal_translate -a_srs EPSG:4269 gom03_v1_0.nc gom02_v1_0.tif. The additional metadata information in the header of the NetCDF file is carried over to the GeoTIFF. The -a_srs flag specifies that the CRS is NAD83 (EPSG:4269) and that information is added to the GeoTIFF header. Additionally, an xml file (gom03_v1_0.tif.aux.xml) was created also containing the NcML metadata from the NetCDF file.
gom03_v1_0.nc
2013
gom03_v1_0.tif
gom03_v1_0.tif.aux.xml
GDAL version 1.9.2 (part of OSGeo4W) on a Windows 7 machine was used to convert the NetCDF file to an Arc/Info ASCII grid formation using the command: gdal_translate -a_srs EPSG:4269 gom03_v1_0.nc -ot Float32 -of AAIGrid gom03_v1_0.asc. This process also creates gom03_v1_0.prj and gom03_v1_0.asc.aux.xml. The prj file contains the projection information, and the xml file contains the additional NcML metadata from the NetCDF file.
gom03_v1_0.tif
2013
gom03_v1_0.asc
gom03_v1_0.prj
gom03_v1_0.asc.aux.xml
Each data format file(s), combined with the FGDC compliant metadata were bundled into individual compressed files for download using WinZip version 14.
2013
gom03_v1_0tif.zip
gom03_v1_0nc.zip
gom03_v1_0asc.zip
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. 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.
20151104
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
The larger work citation had one originator field, but with two authors. This was adjusted so that there are two originators, each in its own field.
20180125
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
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
Raster
Point
79560000
0.0008333
0.0008333
Decimal Degrees
North American Datum of 1983
Geodetic Reference System 80
6378137.000000
298.257222
North American Vertical Datum of 1988
0.01
Meters
Explicit elevation coordinate included with horizontal coordinates
North American Vertical Datum of 1988
0.01
Meters
Attribute values
GOM_061311_3sec
Digital bathymetry grid
U.S. Geological Survey
Z
Depth
U.S. Geological Survey
-5044.84
1912.6
Meters
Richard P. Signell
United States Geological Survey Woods Hole Coastal and Marine Science Center
Mailing
384 Woods Hole Road
Woods Hole
MA
02543
(508) 548-8700 x2229
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.
Compressed ASCII file including Esri ASCII grid and projection information.
7.2
The Esri ASCII grid, the xml metadata generated by gdal_translate, and the FGDC compliant metadata.
ZIP
495
http://pubs.usgs.gov/of/2011/1127/data/gom03_v1_0asc.zip
32-bit GeoTIFF containing floating-point representation of the DEM
1.0
The GeoTIFF image, the xml metadata generated by gdal_translate, and the FGDC compliant metadata.
ZIP
268
http://pubs.usgs.gov/of/2011/1127/data/gom03_v1_0tif.zip
NetCDF file
3.0
The NetCDF file and the FGDC compliant metadata.
ZIP
268
http://pubs.usgs.gov/of/2011/1127/data/gom03_v1_0nc.zip
THREDDS Data Server Services
4.3.16
Gridded data
http://geoport.whoi.edu/thredds/gom_bathy.html?dataset=bathy/gom03_v1_0
http://geoport.whoi.edu/thredds/gom_bathy.html
Use a web browser to explore services to subset data from the digital elevation model
OPeNDAP Data URL
2.0
DAP data subsets of gridded data
http://geoport.whoi.edu/thredds/dodsC/bathy/gom03_v1_0.html
Use an OPeNDAP client to subset data from the digital elevation model
OGC Web Map Service (WMS)
1.3.0
JPG or PNG images of maps of gridded data
http://geoport.whoi.edu/thredds/wms/bathy/gom03_v1_0?service=WMS&version=1.3.0&request=GetCapabilities
Use WMS client to display maps of the digital elevation model
NetCDF Subset Service
NetCDF subsets of gridded data
http://geoport.whoi.edu/thredds/ncss/grid/bathy/gom03_v1_0/dataset.html
Use web form to extract netcdf subsets of data
none
None
20240318
Richard P. Signell
U.S. Geological Survey
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543-1598
USA
508-548-8700 x2229
508-547-2310
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