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TitleSimple cabled instrument for measuring parameters in situ (SCIMPI) and Hole 858G CORK replacement
AuthorKulin, I J T; Riedel, M; Klaus, A; Bogus, K A; Kulhanek, D K; Iturrino, G; Becker, K; Davis, E EORCID logo; Meldrum, R D; Insua, T L; Moran, K; Farrington, S; Masterson, W; Pirenne, B; Sherwood, P; Bradley, S; Malone, M; Storms, M; Aduddell, R; Furman, C; Expedition 341S Scientists and Engineers
SourceIntegrated Ocean Drilling Program, Preliminary Report 341S, 2013, 50 pages, Open Access logo Open Access
LinksOnline - En ligne
Alt SeriesNatural Resources Canada, Contribution Series 20190037
PublisherIntegrated Ocean Drilling Program Management International, Inc.
Mediapaper; on-line; digital
RelatedThis publication is related to Simple cabled instrument for measuring parameters in situ (SCIMPI) and Hole 858G CORK replacement
File formatpdf; html
ProvinceBritish Columbia; Western offshore region
AreaVancouver Island; Pacific Ocean
Lat/Long WENS-128.7167 -126.8333 48.6833 48.4500
Subjectsmarine geology; tectonics; geophysics; Science and Technology; Nature and Environment; in-field instrumentation; formation pressures; ground temperatures; geophysical logging; electrical resistivity; thermal analyses; hydrologic environment; tectonic setting; plate margins; mid-ocean ridges; rifts; oceanic crust; submarine hydrothermal vents; IODP Hole 858G; Integrated Ocean Drilling Program Expedition 341S; Cascadia Margin; Juan de Fuca Plate; Juan de Fuca Ridge; Middle Valley Rift; NEPTUNE Observatory Network; IODP Hole U1416A; IODP Hole U1416B; Bullseye Vent
Illustrationstables; location maps; geoscientific sketch maps; photographs; seismic profiles; schematic diagrams; time series
ProgramPublic Safety Geoscience Assessing Earthquake Geohazards
ProgramIntegrated Ocean Drilling Program
Released2013 07 01
AbstractIntegrated Ocean Drilling Program Expedition 341S was an engineering expedition dedicated to two separate projects. One was the first deployment of the Simple Cabled Instrument for Measuring Parameters In Situ (SCIMPI) on the Cascadia margin. The second was replacement of the CORK in Hole 858G for formation pressure monitoring in the Middle Valley axial rift of the Juan de Fuca Ridge. Both installations were targeted to be incorporated into the NEPTUNE observatory network.
SCIMPI is a new observatory instrument designed to study dynamic processes in the subseabed based on a simple and low-cost approach. SCIMPI was successfully installed in Hole U1416A. The final tool string consisted of nine modules, with three of these including pressure sensors (modules 1, 5, and 9, at 8, 117, and 234 meters below seafloor, respectively). The second operation with SCIMPI was the deployment of a single module (with a seafloor connector and command module, dubbed SHRIMPI) in Hole U1416B.
The new CORK that was to be installed in Hole 858G was constructed with a simplified seal system designed to survive the overpressures and high temperatures at this location. The new CORK was not installed because the old CORK could not be removed from Hole 858G.
Summary(Plain Language Summary, not published)
This report summarizes the activities of IODP Expedition 341S which capitalized on an opportunity to carry out operations to re-instrument one of the first CORK observatory borehole installations (in 1991) and to test the feasibility of a simple instrumented sensor string installed directly into the sub-seafloor without casing at a shallow level where formation collapse would seal in the string.

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