![]() These results reinforce the notion that both the southernmost Cascadia megathrust and the smaller fore‐arc faults above it contribute to regional seismic hazard. We also find that 6–17 mm/yr of right‐lateral slip deficit extends north of the MTJ and into the southern Cascadia fore‐arc. ![]() Modeling of the horizontal and vertical velocities suggests that the southernmost CSZ is coupled interseismically to deeper than 25 km depth. Results indicate that the LSF and MRF systems together accumulate 4–5 mm/yr of reverse‐slip deficit, although their separate slip rates cannot be determined independently. We then use a constrained least‐squares inversion to determine best‐fitting slip rates on the major faults and investigate slip rate trade‐offs between faults. We construct Green’s functions for interseismic slip deficit for discrete faults embedded in an elastic plate overlying a viscoelastic mantle. These networks are radial with approximately 12 baselines using a common, central station. This map shows the locations of 4 two-color EDM (Electronic Distance Meter) networks in Southern California. In this work, we analyze a new compilation of interseismic geodetic velocities from Global Navigation Satellite Systems, leveling, and tide gauge data near the MTJ to constrain present‐day slip deficit rates on upper‐plate faults and coupling on the megathrust. Four EDM networks located in Southern California show strain accumulation on the San Andreas fault system in this region. ![]() However, the geodetic slip rates of these faults are poorly constrained. These faults, including the Little Salmon and Mad River fault (LSF and MRF) zones, are located near the most populated parts of California’s north coast and show paleoseismic evidence for three slip events of several‐meter scale in the past 1700 yr. The Earthquake Event Page application supports most recent browsers, view supported browsers.Or, try our Real-time Notifications, Feeds, and Web Services. The earthquakes are associated with normal Basin and Range province faulting, and there are numerous fault zones under and around the lake which could be the source of the sequence. The fore‐arc of the southern Cascadia subduction zone (CSZ), north of the Mendocino triple junction (MTJ), is home to a network of Quaternary‐active crustal faults that accumulate strain due to the interaction of the North American, Juan de Fuca (Gorda), and Pacific plates. This map shows the locations of two M5+ earthquakes and numerous aftershocks in and around Lake Almanor, CA, from 11. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |