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Geologic interpretation and multibeam bathymetry of the sea floor in southeastern Long Island Sound

September 8, 2006

Digital terrain models (DTMs) produced from multibeam echosounder (MBES) bathymetric data provide valuable base maps for marine geological interpretations (e.g. Todd and others, 1999; Mosher and Thomson, 2002; ten Brink and others, 2004; Poppe and others, 2006a,b). These maps help define the geological variability of the sea floor (one of the primary controls of benthic habitat diversity); improve our understanding of the processes that control the distribution and transport of bottom sediments, the distribution of benthic habitats and associated infaunal community structures; and provide a detailed framework for future research, monitoring, and management activities.

The bathymetric survey interpreted herein (National Oceanic and Atmospheric Administration (NOAA) survey H11255) covers roughly 95 km? of sea floor in southeastern Long Island Sound (fig. 1). This bathymetry has been examined in relation to seismic reflection data collected concurrently, as well as archived seismic profiles acquired as part of a long-standing geologic mapping partnership between the State of Connecticut and the U.S. Geological Survey (USGS). The objective of this work was to use these geophysical data sets to interpret geomorphological attributes of the sea floor in terms of the Quaternary geologic history and modern sedimentary processes within Long Island Sound.

Citation Information

Publication Year 2006
Title Geologic interpretation and multibeam bathymetry of the sea floor in southeastern Long Island Sound
DOI 10.3133/ofr20061059
Authors Lawrence J. Poppe, Seth D. Ackerman, Elizabeth F. Doran, Marc S. Moser, Helen F. Stewart, Nicholas A. Forfinski, Uther L. Gardner, Jennifer A. Keene
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Open-File Report
Series Number 2006-1059
Index ID ofr20061059
Record Source USGS Publications Warehouse
USGS Organization Woods Hole Science Center