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Location and grain-size analysis results of sediment samples collected in Long Island Sound, Connecticut and New York, in fall 2017 and spring 2018 by the U.S. Geological Survey, University of Connecticut, and University of New Haven during field activities 2017-056-FA and 2018-018-FA (simplified point shapefile and CSV files)

Dates

Publication Date
Start Date
2017-11-28
End Date
2018-05-15

Citation

Ackerman, S.D., Huntley, E.C., Blackwood, D.S., Babb, I.G., Zajac, R.N., Conroy, C.W., Auster, P.J., Schneeberger, C.L., and Walton, O.L., 2020, Sea-floor sediment and imagery data collected in Long Island Sound, Connecticut and New York, 2017 and 2018: U.S. Geological Survey data release, https://doi.org/10.5066/P9GK29NM.

Summary

Two marine geological surveys were conducted in Long Island Sound, Connecticut and New York, in fall 2017 and spring 2018 by the U.S. Geological Survey, University of Connecticut, and University of New Haven through the Long Island Sound Mapping and Research Collaborative. Sea-floor images and videos were collected at 210 sampling sites within the survey area, and surficial sediment samples were collected at 179 of the sites. The sediment data and the observations from the images and videos are used to identify sediment texture and sea-floor habitats.

Contacts

Attached Files

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2017-056-FA_and_2018-018-FA_samples_GS-LD.csv 114.04 KB text/csv
2017-056-FA_and_2018-018-FA_samples_GS-MS.csv 76.77 KB text/csv
2017-056-FA_and_2018-018-FA_samples_browse.jpg
“Map of sediment sample locations in the survey area in Long Island Sound.”
thumbnail 703.82 KB image/jpeg
Shapefile: 2017-056-FA_and_2018-018-FA_samples_GS-MS.zip
2017-056-FA_and_2018-018-FA_samples_GS-MS.cpg 5 Bytes
2017-056-FA_and_2018-018-FA_samples_GS-MS.dbf 419.14 KB
2017-056-FA_and_2018-018-FA_samples_GS-MS.prj 145 Bytes
2017-056-FA_and_2018-018-FA_samples_GS-MS.sbn 2.11 KB
2017-056-FA_and_2018-018-FA_samples_GS-MS.sbx 228 Bytes
2017-056-FA_and_2018-018-FA_samples_GS-MS.shp 5.84 KB
2017-056-FA_and_2018-018-FA_samples_GS-MS.shx 1.74 KB

Purpose

This dataset provides access to the locations and grain-size analysis results of surficial sediments collected with a modified Van Veen grab sampler on the SEABed Observation and Sampling System (SEABOSS) aboard the Research Vessel (R/V) Connecticut during USGS field activities 2017-056-FA (November 28 to December 3, 2017) and 2018-018-FA (May 8 to 15, 2018). These data were collected to explore the nature of the sea floor and to characterize the seabed by identifying sediment texture. The sediments were analyzed using two different methods: the Beckman Coulter Multisizer 3 and sieving of the >= 4-phi fraction, and the HORIBA LA-960 laser diffraction analyzer and sieving of the >= -2-phi fraction. The HORIBA LA-960 laser diffraction analyzer is a new method for analyzing grain-size distribution at the sediment laboratory at the USGS Woods Hole Coastal and Marine Science Center. This dataset was analyzed using both methods so that the results could be compared. Results of the comparison are not included in this data release.

Additional Information

Shapefile Extension

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