Color-Encoded Image of 3-m Gridded Hill-Shaded Bathymetry From Long Island Sound off Branford Connecticut (H11043_UTM18_3MBATHY.TIF, UTM)

Metadata Updated: December 3, 2018

The U.S. Geological Survey, in cooperation with the National Oceanic and Atmospheric Administration and the Connecticut Department of Environmental Protection, has produced detailed geologic maps of the sea floor in Long Island Sound, a major East Coast estuary surrounded by the most densely populated region of the United States. These studies have built upon cooperative research with the State of Connecticut that was initiated in 1982. The current phase of this research program is directed toward studies of sea-floor sediment distribution, processes that control sediment distribution, nearshore environmental concerns, and the relation of benthic community structures to the sea-floor geology. Anthropogenic wastes, toxic chemicals, and changes in land-use patterns resulting from residential, commercial, and recreational development have stressed the environment of the Sound, causing degradation and potential loss of benthic habitats (Koppelman and others, 1976; Long Island Sound Study, 1994). Detailed maps of the sea floor are needed to help evaluate the extent of adverse impacts and to help manage resources wisely in the future. Therefore, in a continuing effort to better understand Long Island Sound, we have regridded and interpolated this NOAA bathymetric survey into a complete-coverage acoustic image of the sea floor. The image presented herein covers a 41.1 km square area of the sea floor in north-central Long Island Sound off Branford, Connecticut and was produced from data collected during NOAA survey H11043. This imagery may serve many purposes, including: (1) defining the geological variability of the sea floor, which is one of the primary controls of benthic habitat diversity; (2) improving our understanding of the processes that control the distribution and transport of bottom sediments and the distribution of benthic habitats and associated infaunal community structures; and (3) providing a detailed framework for future research, monitoring, and management activities. This bathymetry may also serve as a base map for subsequent sedimentological, geochemical, and biological observations, because precise information on environmental setting is important for selection of sampling sites and for accurate interpretation of point measurements.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Date July 20, 2018
Metadata Created Date December 1, 2018
Metadata Updated Date December 3, 2018
Reference Date(s) January 1, 2006 (publication)
Frequency Of Update notPlanned
Frequency Of Update notPlanned

Metadata Source

Harvested from DOI CKAN Harvest Source

Graphic Preview

Color image showing an overview of NOAA survey H11043 projected into UTM zone 18

Additional Metadata

Resource Type Dataset
Metadata Date July 20, 2018
Metadata Created Date December 1, 2018
Metadata Updated Date December 3, 2018
Reference Date(s) January 1, 2006 (publication)
Responsible Party U.S. Geological Survey (Point of Contact)
Contact Email
Access Constraints Use Constraints: Data are not for navigation purposes. Public domain data are freely redistributable with proper metadata and source attribution. Please recognize the U.S.Geological Survey (USGS) as the source of this information., Access Constraints: None
Bbox East Long -72.7758
Bbox North Lat 41.2372
Bbox South Lat 41.1512
Bbox West Long -72.8699
Coupled Resource
Frequency Of Update notPlanned
Graphic Preview Description Color image showing an overview of NOAA survey H11043 projected into UTM zone 18
Graphic Preview File
Graphic Preview Type JPEG
Harvest Object Id 7d329c89-9532-45f8-85b6-5527e4b17854
Harvest Source Id 34ce571b-cb98-4e0b-979f-30f9ecc452c5
Harvest Source Title DOI CKAN Harvest Source
Licence Although this data set has been used by the USGS and NOAA, no warranty, expressed or implied, is made by the USGS or NOAA as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS or NOAA in the use of these data or related materials.
Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester true

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