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Metadata
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ID
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08008
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Also Known As
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J-1-08-PR
08008
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Abstract
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United States Geological Survey, Woods Hole, Massachusetts.
Chief Scientists: Jason Chaytor, Uri ten Brink. Coring data
(WHOI Giant Gravity Corer, 3.5 kHz echosounder) of field
activity 08008 (J-1-08-PR) in Mona Canyon, Puerto Rico
Trench, Puerto Rico, the Virgin Islands, Virgin Islands
Basin, and Whiting Basin, United States, northeast Caribbean,
North Atlantic from 03/16/2008 to 03/24/2008
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Organization
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United States Geological Survey, Woods Hole, Massachusetts
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Project/Theme
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Chronology of Slope Failures and Seismites around
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Chief Scientist
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Jason Chaytor
Uri ten Brink
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Activity Type
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Coring
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Platform
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Seward Johnson
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Area of Operation
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Mona Canyon, Puerto Rico Trench, Puerto Rico, the Virgin Islands, Virgin Islands Basin, and Whiting Basin, United States, northeast Caribbean, North Atlantic
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Location map
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Bounding Coordinates
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20.75000
-68.75000 -63.25000
16.85000
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Ports
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LEAVE San Juan, Puerto Rico
ARRIVE San Juan, Puerto Rico
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Dates
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03/16/2008 (JD 076) to 03/24/2008 (JD 084)
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Analog Materials
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No analog holdings.
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Index map
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Information Specialist
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Crew
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Jason Chaytor
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Chief Scientist
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Uri ten Brink
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Chief Scientist
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Jason Chaytor
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Uri ten Brink
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Matthew Arsenault
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Sandy Baldwin
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Brian Buczkowski
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Michael Casso
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Claudia Flores
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Kate McMullen
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Emily Himmelstoss
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Jim Broda
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WHOI, Coring Technician
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George Gunther
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Equipment Used
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WHOI Giant Gravity Corer
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3.5 kHz echosounder
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Purpose
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The objective of this coring cruise is to determine the age
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of several significant slope failures and seismite layers around
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Puerto Rico in an effort to constrain the temporal distribution of
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large slope failures and earthquakes. Large landslide and
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earthquake events in close proximity to Puerto Rico and the U.S.
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Virgin Islands are believed to have triggered numerous tsunami,
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which have caused significant damage to coastal communities in the
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region. By better constraining the temporal occurrence of such
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large tsunami source mechanisms, we hope to gain a better
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understanding of the recurrence interval and size of future
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landslides, thereby providing valuable input into tsunami hazard
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models for the region. This project is a collaborative effort
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between WHOI and the USGS Woods Hole Science Center. In order to do
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this, we aim to collect 30-40 cores from offshore Puerto Rico (Mona
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Canyon, north slope and Puerto Rico trench, and the Virgin Island
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and Whiting Basins) that intersect landslide or seismite deposits so
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as to be able to date the penultimate and potentially older
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landslide and/or earthquake events.
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Information to be Derived
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Samples and Chemical Analysis;sediment stratigraphy;radiocarbon ages
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Summary
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During the 9 days at sea, 40 gravity cores were attempted in
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basins to the northwest of Puerto Rico, south of US Virgin Islands,
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within the Puerto Rico trench, and the south and north slopes
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offshore Puerto Rico. Over 24 m of core was recovered from 21
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successful deployments, in addition to numerous smaller samples
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recovered from the corer when only partial sediment penetration
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occurred.
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Notes
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Navigation technique: DGPS.
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9 days at sea.
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40 stations occupied.
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The objective of this coring cruise is to determine the age
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of several significant slope failures and seismite layers around
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Puerto Rico in an effort to constrain the temporal distribution of
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large slope failures and earthquakes. Large landslide and
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earthquake events in close proximity to Puerto Rico and the U.S.
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Virgin Islands are believed to have triggered numerous tsunami,
|
|
which have caused significant damage to coastal communities in the
|
|
region. By better constraining the temporal occurrence of such
|
|
large tsunami source mechanisms, we hope to gain a better
|
|
understanding of the recurrence interval and size of future
|
|
landslides, thereby providing valuable input into tsunami hazard
|
|
models for the region. This project is a collaborative effort
|
|
between WHOI and the USGS Woods Hole Science Center. In order to do
|
|
this, we aim to collect 30-40 cores from offshore Puerto Rico (Mona
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Canyon, north slope and Puerto Rico trench, and the Virgin Island
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and Whiting Basins) that intersect landslide or seismite deposits so
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as to be able to date the penultimate and potentially older
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landslide and/or earthquake events.
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Funding
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Publications
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Chaytor, Jason, and ten Brink, Uri, 2008, Gravity Coring Offshore Puerto Rico
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and the U.S. Virgin Islands to Investigate the Timing of Submarine Landslides
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and Large Earthquakes, USGS Sound Waves, July 2008, available on line at:
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http://soundwaves.usgs.gov/2008/07/fieldwork3.html
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Got Help?
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For 08008, we would appreciate any information on -- analog materials, contract, days at sea, dive count, kms of navigation, national plan, NGDC Info, owner, project number, scanned materials, seismic description, station count, station description, submersible, tabulated info.
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