Woods Hole Coastal and Marine Science Center

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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. 

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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Image: Night Recovery of the Multichannel Seismic System Aboard CCGS Louis S. St-Laurent
September 12, 2009

Night Recovery of the Multichannel Seismic System

Looking astern, the airgun sled is in its cradle in the center of the photo.  The crew are manually recovering the multichannel streamer and beginning the large figure-8 shape of coiling it on deck. Work at sea occurs 24 hours a day.  In late September, there is ~12 hours of night, resulting in gear recovery at night. This was final recovery of gear at the end of the

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Image: Science Crew Aboard CCGS Louis S. St-Laurent
September 9, 2009

Science Crew Aboard CCGS Louis S. St-Laurent

Science crew ran the multichannel seismic equipment, sonobuoy refraction equipment, navigation, marine mammal observations program, and incidental science studies.  Dr. Deborah Hutchinson (USGS liaison aboard the Canadian icebreaker) is 7th from the right.  Dr. David Mosher, Chief Scientist aboard Louis is 10th from the right.

[This set of

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