Woods Hole Coastal and Marine Science Center

Multimedia

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Topographic and bathymetric map of the island of Hispaniola.
December 31, 2010

Topographic and bathymetric map of the island of Hispaniola.

Map of the island of Hispaniola that include the countries of Haiti and the Dominican Republic. Fault traces are shown as lines with the following descriptions: barbed=thrust fault; solid=strike-slip fault with arrows showing relative direction of motion; black and white=normal fault. The arrow at the top right corner shows the direction of the North American plate motion

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Topography and bathymetry map of the Northeastern Caribbean.
December 31, 2010

Topography and bathymetry map of the Northeastern Caribbean.

Map of the Northeastern Caribbean: topography is in shades of green and bathymetry in shades of blue. Fault traces are shown as lines with the following descriptions: barbed=thrust fault; solid=strike-slip fault with arrows showing relative direction of motion; black and white=normal fault. Faults outlined in red have a potential to generate a large earthquake. The arrow

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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.

A man pulls a chunk of frozen ice from a core collection tube, the ice is lumpy and interspersed with dark sediment
August 11, 2010

Chunk of Gas Hydrate

In 2010, the U.S. Geological Survey recovered white chunks of gas hydrate (methane ice) mixed with gray sediment a few feet below the seafloor in the Arctic Ocean at a water depth of approximately 8,000 feet.

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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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. 

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

Methane seep in Arctic Lake Qalluuraq. A, Surface bubbling of lake above methane seep. B, 83-kHz seismic-reflection profile
December 31, 2009

Methane Seeps

 

Methane seep in Arctic Lake Qalluuraq. A, Surface bubbling of lake above methane seep. B, 83-kHz seismic-reflection profile of lake-bottom depression at seep and methane bubbles (m) in water column. Horizontal black lines are depth markers, spaced at 2.5-ft intervals. Vertical scale is exaggerated in this profile. Depression is approximately 3 m

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