Spring 2018 LDEO/Queens College Sediment and Sub-bottom Cruise

In April 2018 a group of scientists and students from Lamont-Doherty Earth Observatory of Columbia University and Queens College of City University New York acquired some sub-bottom images in preparation of sediment core sampling later that year and collected more sediment grabs. The work was done using the vessels RV Seawolf and RV Pritchard from Stony Brook University. High-resolution sub-bottom systems can image the upper meter of sediments and can help find the best locations for sediment cores. Sediment cores complement surface sediment grab samples by providing a view of how sediment composition has changed with time and thus how representative the surface data are over a longer period of time.

Stony Brook University’s RV Pritchard at the CT DEEP dock in Old Saybrook, CT
Figure 1. Stony Brook University’s RV Pritchard at the CT DEEP dock in Old Saybrook, CT

 

EdgeTech Chirp sub-bottom system used and sediment cores collected as part of this study
Figure 2. EdgeTech Chirp sub-bottom system used and sediment cores collected as part of this study

 

Map of the study are in North-Eastern Long Island Sound showing the sediment grab and core locations as well as the sub-bottom lines collected in spring 2018. Background water depth is provided by NOAA
Figure 3. Map of the study are in North-Eastern Long Island Sound showing the sediment grab and core locations as well as the sub-bottom lines collected in spring 2018. Background water depth is provided by NOAA