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Sound Waves Monthly Newsletter - Coastal Science and Research News from Across the USGS
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Fieldwork

Gulf of Mexico Cruise

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Dave Twichell (WHFC) participated in a Gulf of Mexico cruise aboard the R/V GYRE during April 9-22 with co-chief scientist, Alan Cooper (Menlo), and technical support staff from Menlo and Woods Hole (Anton, Brode, Danforth, Foster, Hart, Irwin, Kooker, Nichols, O'Brien, Olson, Williams), and Standen (Huntec).

The cruise focused on mapping the distribution of gas hydrates and trying to determine links between gas hydrates and surficial processes (mud volcanoes, chemosynthetic communities, landslides, etc.). Regional MCS and high-resolution Huntec seismic profiles were collected to map the distribution of hydrates and to determine their acoustic character.

Two sidescan mosaics were completed. Unfortunately weather and winch problems did not allow the completion of all the sidescan mapping that was planned, and the large number of oil rigs that recently have moved onto the slope restricted access to some of the key study areas. Sidescan, chirp subbottom, and Huntec data were all archived to CD-ROM at sea, and within a week after the cruise, a digital sidescan mosaic and VERY preliminary interpretation had been completed and printed as a poster.


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in this issue: Fieldwork cover story:
Grand Canyon

Gulf of Mexico Cruise

Georges Bank Benthic Habitat

Channel Islands

Lake Mead

Cruise News: R/V Gilbert

Great Bahama Bank

Outreach Nat'l Ocean Sciences Bowl

Meetings FL-AL-MS Geological Surveys

North Carolina Co-op

North East Mapping Organization

Atlantic Offshore Minerals Assessment

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