Forecasting the Next Parkfield Mainshock on the San Andreas Fault (California)
نویسندگان
چکیده
منابع مشابه
Source Duration Scales with Magnitude Differently for Earthquakes on the San Andreas Fault and on Secondary Faults in Parkfield, California
We used a comparison of source time function pulse widths to show that a group of earthquakes on the San Andreas fault near Parkfield have a constant duration over a magnitude range of 1.4–3.7. Earthquakes on secondary faults have an increase in duration with magnitude, which is the expected relationship for the usual observation of constant stress drop. The constant duration suggests that faul...
متن کاملLow-velocity damaged structure of the San Andreas Fault at Parkfield from fault zone trapped waves
[1] We used dense linear seismic arrays across and along the San Andreas Fault (SAF) at Parkfield, California to record fault zone trapped waves generated by explosions and microearthquakes in 2002. Prominent trapped waves appeared at stations close to the SAF main fault trace while some energy was trapped in the north strand at the array site. Observations and 3-D finitedifference simulations ...
متن کاملSteep-dip seismic imaging of the shallow San Andreas fault near Parkfield.
Seismic reflection and refraction images illuminate the San Andreas Fault to a depth of 1 kilometer. The prestack depth-migrated reflection image contains near-vertical reflections aligned with the active fault trace. The fault is vertical in the upper 0.5 kilometer, then dips about 70 degrees to the southwest to at least 1 kilometer subsurface. This dip reconciles the difference between the co...
متن کاملPostseismic relaxation along the San Andreas fault at Parkfield from continuous seismological observations.
Seismic velocity changes and nonvolcanic tremor activity in the Parkfield area in California reveal that large earthquakes induce long-term perturbations of crustal properties in the San Andreas fault zone. The 2003 San Simeon and 2004 Parkfield earthquakes both reduced seismic velocities that were measured from correlations of the ambient seismic noise and induced an increased nonvolcanic trem...
متن کاملSource Duration Scales with Magnitude Differently For Earthquakes on the San Andreas Fault and on Secondary Faults in Parkfield, CA
We show using a comparison of source time function pulse widths that a group of earthquakes on the San Andreas Fault near Parkfield have a constant duration over a magnitude range of 1.4 to 3.7. Earthquakes on secondary faults have an increase in duration with magnitude, which is the expected relationship for the usual observation of constant stress drop. The constant duration suggests that fau...
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ژورنال
عنوان ژورنال: Journal of Ecology & Natural Resources
سال: 2020
ISSN: 2578-4994
DOI: 10.23880/jenr-16000218