Potential of 3-D vertical seismic profiles to characterize seismogenic fault zones.

von Huene, Roland, Klaeschen, Dirk and Papenberg, Cord (2008) Potential of 3-D vertical seismic profiles to characterize seismogenic fault zones. Open Access Geochemistry, Geophysics, Geosystems, 9 (Q07S07). DOI 10.1029/2008GC002013.

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The potential of a 3-D vertical seismic profile (VSP) to improve resolution of seismogenic plate interfaces was explored with synthetic modeling. The 3-D VSP modeled is at a proposed site for a 1 to 1.5 km deep open hole that provides background for riser drilling. Three-dimensional VSP images could resolve 30–60 m spaced reflective horizons in a Costa Rican subduction zone. It can record a great amount of high-fidelity S wave data to invert for physical properties, directions of strain, and pore pressure above and below the plate interface fault. A 6 km × 12 km grid of shots with a surface ship will illuminate a ∼4 km × 7 km area of the plate interface fault zone with a high data density. Acquisition adds 5 to 9 days to drill ship time on site and a shooting ship. Seismic image resolution falls between that of borehole information and 3-D surface ship seismic images. A multiple-kilometer 3-D volume of high-fidelity S wave data is an exceptional addition not available with other techniques.

Document Type: Article
Keywords: VSP; seismogenic zone; high-resolution imaging; Costa Rica
Research affiliation: OceanRep > SFB 574 > A1
OceanRep > SFB 574
OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-GDY Marine Geodynamics
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1029/2008GC002013
ISSN: 1525-2027
Projects: Future Ocean, SFB574
Contribution Number:
SFB 574152
Date Deposited: 09 Dec 2009 11:02
Last Modified: 08 Mar 2018 07:59
URI: http://oceanrep.geomar.de/id/eprint/2744

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