Woods Hole Coastal and Marine Science Center

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 Instrumented Pressure Testing Chamber (IPTC)
December 31, 2010

Instrumented Pressure Testing Chamber (IPTC)

The Instrumented Pressure Testing Chamber (IPTC). A device for measuring the physical properties of naturally-occurring, hydrate-bearing sediment at nearly in situ pressure conditions

Methane seeping on the Virginia margin just shallower than the limit for gas hydrate stability.
December 31, 2010

Methane seeping

Methane seeping on the Virginia margin just shallower than the limit for gas hydrate stability. 

Comparison of observed near-bed velocities and modeled near-bed velocities using several bottom-roughness formulations.
December 31, 2010

Comparison of observed near-bed velocities and modeled near-bed veloci

Comparison of observed near-bed velocities and modeled near-bed velocities using several bottom-roughness formulations. Velocity vectors are overlaid on map of backscatter from the sea floor showing regions with coarse sand (light color) and fine sand (dark colors). White lines are bathymetry contours. Mean velocities were averaged over entire period (top panel), flood and

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Simulation model for geomorphic change
December 31, 2010

Simulation Model

Simulation results for geomorphic change in Suisun Bay, CA (Ganju and Schoellhamer, 2010)

R/V Rafael
September 14, 2010

R/V Rafael

The R/V Rafael performs nearshore geophysical surveys, and includes high resolution sub-bottom profiling, sidescan sonar, and multibeam echosounding in its arsenal of survey capabilities. The R/V Rafael can cruise at 30 knots fully loaded, so day surveys in large lakes, bays, or rivers, and near-shore ocean environments that require long transits can be cost effective.

Three men kneel in the snow while examining a long thin core of sediment, one man pointing and talking, one man taking notes.
April 20, 2010

Examining Arctic lake sediment core

John Pohlman (USGS, left) and colleagues from the University of Alaska Fairbanks examine a sediment core retrieved through winter ice from the bottom of a lake in northern Alaska. Such cores are used to reconstruct methane emissions and climate history over the past 20,000 years.

Map of the North American - Caribbean tectonic plate boundary
January 20, 2010

Map of the North American - Caribbean tectonic plate boundary

Map of the North American - Caribbean tectonic plate boundary. Colors denote depth below sea level and elevation on land. Bold numbers are the years of moderately large (larger than about M7) historical earthquakes written next to their approximate location. Asterisk - Location of the January 12, 2010 earthquake. Barbed lines- boundary where one plate or block plunges

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Photograph of methane seep
December 31, 2009

Photograph of methane seep

A methane seep in shallow Lake Qalluuraq on the Alaskan North Slope near the Native Village of Atqasuk breaks the water's surface during 2009 geophysical surveys

U.S. Coast Guard Cutter Healy breaks ice ahead of the Canadian Coast Guard Ship Louis S. St-Laurent on September 1, 2009.
December 31, 2009

U.S. Coast Guard Cutter Healy breaks ice

 U.S. Coast Guard Cutter Healy breaks ice ahead of the Canadian Coast Guard Ship Louis S. St-Laurent on September 1, 2009. The two ships were part of a multi-year, multi-agency Arctic survey that will help define the North American continental shelf.

 Canadian Coast Guard Ship Louis S. St. Laurent alongside U.S. Coast Guard Cutter Healy in the Arctic Ocean
December 31, 2009

Canadian and U.S. Coast Guard Ships

Canadian Coast Guard Ship Louis S. St. Laurent alongside U.S. Coast Guard Cutter Healy in the Arctic Ocean. The United States and Canada are mapping the Arctic seafloor and gathering data to help define the outer limits of the continental shelf in this region.