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borehole

Oct 15, 2012

CORKs

For over three decades, a fundemental goal for scientific ocean drilling has been to understand the role of the presence and flow of water in marine geologic formations on processes like heat loss from the earth, chemical exchange between the Earth’s oceans and crust, support of subseafloor microbiological ecosystems, and the creation of methane-hydrates and ore deposits. The quality of direct observations is commonly compromised by a simple problem: boreholes create hydrologic “short circuits” that allow open exchange of water between subseafloor formations and the ocean. The resulting perturbations severely limit the utility of temperature and pressure observations and of water samples taken during or shortly after drilling operations.

...

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cork | seabed | borehole | sub-seafloor | drilling | thermistor | IODP | ODP | hydrogeology | hydrology

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The W.M. Keck Foundation has awarded $1 Million to Woods Hole Oceanographic Institution (WHOI) for a new geodesy observatory to be connected to Ocean Networks Canada and the Ocean Observatories Initiative Regional Scale Nodes (OOI RSN). This interdisciplinary project, led by Dr.Jeff McGuire and John Collins of WHOI, will allow scientists to monitor three Cascadia subduction zone segments off the coasts of Vancouver Island, Washington and Oregon. Along this subduction zone, the Juan de Fuca plate...

Read more

Woods Hole Oceanographic Institution | WHOI | Cascadia subduction zone | clayoquot slope | earthquake | ACORK | cork | tsunami | borehole

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The JOIDES Resolution research drillship, a key vessel in the Integrated Ocean Drilling Program (IODP), was docked in Victoria this summer for three months of refit work before heading out on two cruises in July and September.

JOIDES Resolution in port at Victoria BC.

New Boreholes

The Juan de Fuca Plate is a hot-spot of scientific ocean drilling. Since ODP expedition 139 in 1991, numerous boreholes have been drilled in the...

Read more

cork | ACORK | JOIDES Resolution | IODP | expedition | seismic | borehole | cascadia basin

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On 29 August 2009 we began a series of intensive dives to install instruments at our Ocean Drilling Program (ODP) 1027 (Cascadia Basin) location. This site, in the centre of the Juan de Fuca Plate, is critically important for several NEPTUNE Canada research projects, including Ocean Crustal Hydrogeology , Seismograph Network  and West Coast "Tsunami-meter" .

Ocean Crustal Hydrogeology

Ten boreholes were drilled across the Juan de Fuca Plate between 1991 and 2003 by the Ocean and Integrated Ocean Drilling Programs (ODP/IODP) expressly for the installation of "CORK" (Circulation Obviation Retrofit Kit) hydrologic observatories. These CORKs allow geoscientists to...

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ODP 889 | ODP 1027 | cascadia basin | clayoquot slope | borehole | endeavour | barkley canyon | cork | Seafloor | benthic | Fauna

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