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U.S. Geological Survey Open-File Report 2009-1001

Geological Interpretation of the Sea Floor Offshore of Edgartown, Massachusetts


Data Catalog

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Geographic Information System

Data layers in this report are provided with geographic coordinates to allow the data to be integrated into a Geographic Information System (GIS).  A GIS is defined as a system of hardware and software to support the display, manipulation, and analysis of spatial data for mapping and complex data solving.  This package provides researchers the ability to integrate, analyze, and map multiple datasets to help local managers make decisions on the basis of the environmental effects of proposed economic and social policies.

Data layers archived here should not require additional processing to be used in the Environmental Systems Research Institute's (ESRI) ArcView and ArcGIS software. This does not mean that a user will not wish to do additional processing, especially with a different GIS software package or spheroid, but that it is not necessary to do additional processing simply to use the data in its minimum archive format.

For users who don't have the ESRI software or a compatible GIS data browser available on their computer, a free viewer, ArcExplorer, is available from ESRI. The key functionality of ArcExplorer is the displaying of spatial data. The user will need to add the selected data layers by using ArcExplorer's add data button. 

Data Description

This report includes links to several data layers (or themes) that can be used to create views of the Edgartown Harbor study area. GeoTIFF files produced from the NOAA sidescan-sonar and bathymetric surveys (combined single-beam and multibeam) are provided in geographic and Universal Transverse Mercator (UTM) Zone 19 WGS 1984 projections. GeoTIFFs of the bathymetry are in color and are hillshaded; GeoTIFFs of the sidescan imagery are in grayscale. ArcRaster grids of the combined single-beam and multibeam bathymetric data are provided in 25-m resolution in geographic and UTM projections.

Ancillary vector data that are provided in the Geographic Coordinate System in WGS84 datum consist of 1) polygon data layers that provide base maps of the coastline for the Massachusetts GIS project area and an outline of the survey area, 2) point data layers of the sediment data and locations of bottom photos, and 3) navigation point and trackline files for the seismic-reflection data. The photographic data are provided in mid- and full-resolution JPEG image format; the seismic data are provided in JPEG and SEG-Y formats.

Each GIS data layer from this publication is cataloged below for easy access. The individual data layers are described below and include the GeoTIFF, grid, or shapefile name (for example, h11346_mb25m_utm19.tif), which is linked to a browse graphic showing the data-layer extent and coverage. Selecting the data-layer name will result in the browse graphic being displayed in a separate browser window.

The top level of this report on the DVD-ROM contains an ArcView project file (h11346.apr) created in ArcView 3.3 and an ESRI ArcMap document (h11346.mxd) created in ArcMap 9.2, but saved as an ArcMap 9.0/9.1 document to make it accessible to older versions of the software.

Federal Geographic Data Committee (FGDC) metadata for the individual data layers are provided in a text version. Selecting associated metadata files from the table below will open the information in a new browser window.

A compressed (.zip), downloadable archive file containing the components of the shapefile, grid, or image for each data layer is also provided. Compressed, downloadable files were created by using the Windows program WINZIP v8.0. Users who do not have software capable of uncompressing the archived files may obtain a free version of the software from Pkware, Inc.

 

BATHYMETRIC IMAGERY

DATA-LAYER NAME AND DESCRIPTION

METADATA

FILES

h11346_mb25m_geo -- full-color, hill-shaded, combined single-beam and multibeam bathymetric imagery of NOAA survey H11346 (geographic, WGS84) generated from the 25-m grid

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h11346_mb25m_utm19 -- full-color, hill-shaded, combined single-beam and multibeam bathymetric imagery of NOAA survey H11346 (UTM, zone 19, NAD83) generated from the 25-m grid

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Zip

 

BATHYMETRIC GRIDS

DATA-LAYER NAME AND DESCRIPTION

METADATA

FILE

h11346_geo25 -- 25-m bathymetric grid of the combined single-beam and multibeam bathymetry from NOAA survey H11346 (geographic, WGS84)

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h11346_utm25 -- 25-m bathymetric grid of the combined single-beam and multibeam bathymetry from NOAA survey H11346 (UTM Zone 19, NAD83)

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 Zip

 

SIDESCAN-SONAR IMAGERY

DATA-LAYER NAME AND DESCRIPTION

METADATA

FILE

h11346_2msss_geo -- 455 kHz sidescan-sonar imagery of NOAA survey H11346 (geographic, WGS84)

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h11346_2msss_utm19 -- 455 kHz sidescan-sonar imagery of NOAA survey H11346 (UTM, Zone 19, NAD83)

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VERIFICATION DATA LAYERS

DATA-LAYER NAME AND DESCRIPTION

METADATA

FILES

rafa08012_seddata -- locations and sediment grain-size analysis data for samples collected during verification of NOAA survey H11346 (geographic, WGS84)

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rafa08012_botphotos -- locations of bottom photographs collected during verification of NOAA survey H11346 (geographic, WGS84)

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rafa08012_bphotographs -- bottom photographs in two resolutions collected during verification of NOAA survey H11346 (geographic, WGS84)

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full-res

mid-res

08034_boomernav -- shot point locations along boomer seismic lines collected during verification of NOAA survey H11346 (geographic, WGS84)

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08034_boomernav500 -- shot-point navigation at 500-shot intervals along Boomer seismic lines collected during verification of NOAA survey H11346 (geographic, WGS84)

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08034_boomernavline -- boomer seismic lines collected during verification of NOAA survey H11346 (geographic, WGS84)

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08034_boomerprofiles -- boomer seismic profiles in two formats collected during verification of NOAA survey H11346

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SEG-Y

JPEG

08034_kelnav -- shot point locations along Chirp seismic lines collected during verification of NOAA survey H11346 (geographic, WGS84)

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08034_kelnav500 -- shot-point navigation at 500-shot intervals along Chirp seismic lines collected during verification of NOAA survey H11346 (geographic, WGS84)

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08034_kelnavline -- Chirp seismic lines collected during verification of NOAA survey H11346 (geographic, WGS84)

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08034_kelprofiles -- Chirp seismic profiles in two formats collected during verification of NOAA survey H11346

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SEG-Y

JPEG

INTERPRETIVE DATA LAYERS

DATA-LAYER NAME AND DESCRIPTION

METADATA

FILE

h11346_interp -- interpretation of the surficial geology from NOAA survey H11346 (geographic, WGS84)

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h11346_bchannels -- interpreted axes of the buried channels beneath NOAA survey H11346 (geographic, WGS84)

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BASEMAP DATA

DATA-LAYER NAME AND DESCRIPTION

METADATA

FILE

nos80k -- medium resolution digital vector U.S. shoreline shapefile for the Massachusetts GIS project area (geographic, WGS84)

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h11346outline -- boundary of NOAA survey H11346 (geographic, WGS84)

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Zip



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