Skip past header information
USGS - science for a changing world

Open-File Report 2013-1020

High-Resolution Geophysical Data Collected Aboard the U.S. Geological Survey Research Vessel Rafael to Supplement Existing Datasets From Buzzards Bay and Vineyard Sound, Massachusetts

Skip past navigation menu to main textTitle Page / List of Figures / Conversion Factors and Datum / Abstract / Introduction / Data Collection and Processing / Acknowledgments / References Cited / Appendix / Index

Figure 6 . Map showing acoustic-backscatter intensity of the seafloorsurrounding the western Elizabeth Islands. Backscatter intensity is an acoustic measure of the hardness and roughness of the seafloor. In general, higher values (light tones) represent rock, boulders, cobbles, gravel, and coarse sand. Lower values (dark tones) generally represent fine sand and muddy sediment.

Figure 6. Map showing acoustic-backscatter intensity tracklines from both the Klein 3000 dual frequency sidescan sonar system (green) and the swath interferometric system (magenta) collected in Buzzards Bay and Vineyard Sound, Massachusetts during surveys 2011-013-FA, 2009-068-FA, and 2007-039-FA. Tracklines are color-coded by the collection system. Is., Island.

Skip USGS links group

Accessibility FOIA Privacy Policies and Notices logo U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information: Contact USGS
Page Last Modified: Wednesday, March 12, 2014, 05:24:52 PM