Geodetic constraints on the 2014 M 6.0 South Napa earthquake
W. D. Barnhart, J. R. Murray, S.‐H. Yun, J. L. Svarc, S. V. Samsonov, E. J. Fielding, B. A. Brooks, and P. Milillo
Mar - 2015
DOI: 10.1785/0220140210

journal : Seismological Research Letters

Volume : 86 ; Issue : 2A
type: Article Journal

INTRODUCTIONOn 24 August 2014, the M 6.0 South Napa earthquake shookmuch of the San Francisco Bay area, leading to significant damagein the NapaValley. The earthquake occurred in the vicinityof the West Napa fault (122.313° W, 38.22° N, 11.3 km), amapped structure located between the Rodger’s Creek andGreen Valley faults, with nearly pure right-lateral strike-slip motion(strike 157°, dip 77°, rake –169°;, last accessed December2014) (Fig. 1). TheWest Napa fault previously experiencedan M 5 strike-slip event in 2000 but otherwise exhibitedno previous definitive evidence of historic earthquake rupture(Rodgers et al., 2008; Wesling and Hanson, 2008). Evans et al.(2012) found slip rates of ∼9:5 mm=yr along theWest Napafault, with most slip rate models for the Bay area placing higherslip rates and greater earthquake potential on the Rodger’sCreek and Green Valley faults, respectively (e.g., Savage et al.,1999; d’Alessio et al., 2005; Funning et al., 2007).

keywords :

Notes : This project, in part, was carried out using CSKproducts (©Italian Space Agency [ASI]), delivered under the ASI license provided under the Caltech/JPL-ASI/CIDOT CaliMapproject.