Integrated Ocean Drilling Program Expedition 334 scientific prospectus; Costa Rica Seismogenesis Project (CRISP); sampling and quantifying input to the seismogenic zone and fluid output

Online Access: Get full text
doi: 10.2204/iodp.sp.334.2010
Author(s): Vannucchi, Paola; Ujiie, Kohtaro; Gamage, Kusali
Author Affiliation(s): Primary:
University of Florence, Earth Sciences Department, Florence, Italy
University of Tsukuba, Japan
Integrated Ocean Drilling Program, United States
Source: Scientific Prospectus (Integrated Ocean Drilling Program), Vol.334, 53p. Publisher: IODP Management International, College Station, TX, United States. ISSN: 1932-9415
Note: In English. Includes appendices. 43 refs.
Summary: The Costa Rica Seismogenesis Project (CRISP) is designed to understand the processes that control nucleation and seismic rupture of large earthquakes at erosional subduction zones. CRISP involves the only known erosional end-member of convergent margins within reach of scientific drilling. With a low sediment supply, fast convergence rate, abundant seismicity, subduction erosion, and a change in subducting plate relief along strike, CRISP offers excellent opportunities to learn causes of earthquake nucleation and rupture propagation. This project complements other deep fault drilling (San Andreas Fault Observatory at Depth and Nankai Trough Seismogenic Zone Experiment) and investigates the first-order seismogenic processes common to most faults and those unique to erosional margins. Expedition 334 is based on a part of CRISP Program A (Integrated Ocean Drilling Program Proposal 537A-Full5), which is the first step toward the deep riser drilling through the seismogenic zone. This expedition will focus on constraining the boundary conditions of lithology, fluid flow, and thermal structure that trigger unstable slip in the seismogenic zone along a drilling transect at two slope sites. These slope sites might also serve as pilot holes for potential future proposed riser drilling to reach the aseismic/seismic plate boundary
Year of Publication: 2010
Research Program: IODP Integrated Ocean Drilling Program
Key Words: 18 Geophysics, Solid-Earth; 19 Geophysics, Seismology; CRISP; Central America; Cocos Plate; Cocos Ridge; Costa Rica; Costa Rica Seismogenesis Project; Crust; Drilling; Earthquakes; East Pacific; Expedition 334; Expeditions; Fluid phase; Genesis; Geophysical methods; Geophysical profiles; Geophysical surveys; Heat flow; Integrated Ocean Drilling Program; Marine drilling; North Pacific; Northeast Pacific; Oceanic crust; Pacific Coast; Pacific Ocean; Planning; Plate convergence; Plate tectonics; Rupture; Seismic methods; Seismic profiles; Subduction zones; Surveys; Volcanism
Coordinates: N082300 N084500 W0840000 W0841500
Record ID: 2010079119
Copyright Information: GeoRef, Copyright 2018 American Geosciences Institute.