Physics
Scientific paper
Jul 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26.1949l&link_type=abstract
Geophysical Research Letters, Volume 26, Issue 13, p. 1949-1952
Physics
2
Seismology: Paleoseismology, Tectonophysics: Continental Neotectonics, Seismology: Seismic Hazard Assessment And Prediction
Scientific paper
WGCEP90 estimated the Hayward fault to have a high probability (0.45 in 30 yr) of producing a future M7 Bay Area earthquake. This was based on a generic recurrence time and an unverified segmentation model, because there were few direct observations for the southern fault and none for the northern Hayward fault. To better constrain recurrence and segmentation of the northern Hayward fault, we trenched in north Oakland. Unexpectedly, we observed evidence of surface rupture probably from the M7 1868 earthquake. This extends the limit of that surface rupture 13 km north of the segmentation boundary used in the WGCEP90 model and forces serious re-evaluation of the current two-segment paradigm. Although we found that major prehistoric ruptures have occurred here, we could not radiocarbon date them. However, the last major prehistoric event appears correlative with a recently recognized event 13 km to the north dated AD 1640-1776.
Lienkaemper James J.
Williams Patrick L.
No associations
LandOfFree
Evidence for surface rupture in 1868 on the Hayward fault in north Oakland and major rupturing in prehistoric earthquakes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Evidence for surface rupture in 1868 on the Hayward fault in north Oakland and major rupturing in prehistoric earthquakes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evidence for surface rupture in 1868 on the Hayward fault in north Oakland and major rupturing in prehistoric earthquakes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-992134