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Open-File Report 2009-1072

Prepared in cooperation with the Massachusetts Office of Coastal Zone Management

Geophysical and Sampling Data from the Inner Continental Shelf: Duxbury to Hull, Massachusetts

By Walter A. Barnhardt, Seth D. Ackerman, Brian D. Andrews, and Wayne E. Baldwin

ABSTRACT

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The U.S. Geological Survey (USGS) and the Massachusetts Office of Coastal Zone Management (CZM)have cooperated to map approximately 200 km² of the Massachusetts inner continental shelf between Duxbury and Hull. This report contains geophysical and geological data collected by the USGS on three cruises between 2006 and 2007. These USGS data are supplemented with a National Oceanic and Atmospheric Administration (NOAA) hydrographic survey conducted in 2003 to update navigation charts. The geophysical data include (1) swath bathymetry from interferometric sonar and multibeam echosounders, (2) acoustic backscatter from sidescan sonar and multibeam echosounders, and (3) subsurface stratigraphy and structure from seismic-reflection profilers. The geological data include sediment samples, seafloor photographs, and bottom videos. These spatial data support research on the influence sea-level change and sediment supply have on coastal evolution, and on efforts to understand the type, distribution, and quality of subtidal marine habitats in the Massachusetts coastal ocean.

Posted July 2010

For additional information contact:
Director
U.S. Geological Survey
Woods Hole Coastal and Marine Science Center
384 Woods Hole Road
Quissett Campus
Woods Hole, MA 02543
(508)548-8700

http://woodshole.er.usgs.gov/

Part or all of this report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge.


Suggested citation:

Barnhardt, W.A., Ackerman, S.D., Andrews, B.D., and Baldwin, W.E., 2010, Geophysical and sampling data from the inner continental shelf; Duxbury to Hull, Massachusetts: U.S. Geological Survey Open-File Report 2009-1072, 1 DVD-ROM. (Also available at http://pubs.usgs.gov/of/2009/1072/.)



Contents

Abstract

Introduction

Data Collection and Processing

Bathymetry

Acoustic Backscatter

Seismic-Reflection Profiling

Seismic-Reflection Data Acquisition 06012

Seismic-Reflection Data Acquisition 07001

Ground Validation

Surficial Sediment Samples and Grain-Size Analyses

Photography and Video

Acknowledgments

References Cited



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