Show simple item record

dc.contributor.authorThurber, Clifford
dc.contributor.authorPeng, Zhigang
dc.date.accessioned2018-05-01T17:42:22Z
dc.date.available2018-05-01T17:42:22Z
dc.date.issued2011
dc.identifier.urihttp://hdl.handle.net/1853/59650
dc.descriptionIssued as final reporten_US
dc.description.abstractThe San Andreas Fault Observatory at Depth (SAFOD) has yielded significant new insights into the nature of the San Andreas fault (SAF). In particular, the recovery of ~ 40 meters of core containing two meters-thick zones of fault gouge and adjacent zones of damage and alteration provides a unique opportunity to characterize the physical and chemical properties of fault zone rocks from a depth where earthquakes occur, although these samples are interpreted to come from a creeping, not seismogenic, part of the fault (Hickman et al., 2007, 2008). We propose to improve our understanding of the context within which these fault zone samples existed in-situ by utilizing arrival times of fault zone head waves (FZHW's) and the associated direct-wave secondary arrivals (DWSA's) to (1) improve the seismic tomography image of the SAF at relatively fine scale, and (2) improve absolute location estimates for earthquakes in the region around SAFOD and in particular the drilling target earthquakes. These two tasks have interrelated goals. Primary among them is to characterize in detail the seismogenic structures on which the earthquakes near SAFOD occur and relate those structures to the borehole and core observations. There is a general consensus that the shallower of the two gouge zones is related to the fault strand along which the so-called "Hawaii" target earthquakes occur. Our improved absolute earthquake locations will either help support or refute this interpretation.en_US
dc.description.sponsorshipUnited States. Department of the Interioren_US
dc.language.isoen_USen_US
dc.publisherGeorgia Institute of Technologyen_US
dc.relation.ispartofseriesSchool of Earth and Atmospheric Sciences ; Project no. 114622en_US
dc.subjectFault zone head wavesen_US
dc.subjectSeismic tomographyen_US
dc.subjectSan Andreas Faulten_US
dc.titleStructure, seismicity, and stress along the San Andreas Fault near SAFODen_US
dc.typeTechnical Reporten_US
dc.contributor.corporatenameGeorgia Institute of Technology. Office of Sponsored Programsen_US
dc.contributor.corporatenameGeorgia Institute of Technology. School of Earth and Atmospheric Sciencesen_US
dc.contributor.corporatenameUniversity of Wisconsin--Madison. Department of Geology and Geophysicsen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record