March 16, 2007, 10:25:29 PM
A rapid decompression in lithospheric stress is being detected by the instrumentation situated in the region along the Pacific-North American Plate Boundary at the Cajon Pass (Southern California) near GeoSeismic Labs. You shoulld be aware of this potentially dangerous interaction occurring between the Southern San Andreas Fault Zone, and the San Jacinto/ Cucamonga-Eastern Sierra Madre Fault Zones. A recent M2.7 epicentered N of La Verne at 3:02:27 UTC (03/27) appears to have been related to the San Antonio Fault, which is a blind fault located in the San Gabriel Mountains between Wrightwood and La Verne, CA. Such a rapid change in compressional stress is suspect for being a precursor for a larger magnitude seismic event within the same region. I consider the M2.7 to be a possible foreshock. You are now advised to stay on Seismic Alert in Southern California. In the Inland Empire, especially along the nearby, and long overdue San Jacinto Fault Zone, you should be prepared for a moderate magnitude or larger earthquake during the next several days. We are now approaching the New Moon's arrival a few days from now (March 19, 2007). This may be enough of an induced increase, or change in lithospheric stress to rupture a fault located to the Northeast of Los Angeles, CA associated with the Sierra Madre Fault System, or the San Jacinto Fault Zone. The potential is increased for having another Northridge type seismic event at this time. In unison with this alert and warning period is a Blanket Seismic Advisory for the Gulf of California to Northern California, which may exhibit further stress changes related to this rapid de-compression at the Plate Boundary, where the unclamping incident level has nearly reached 32 Units as of yesterday.
No comments:
Post a Comment