Abstract
Unique attributes in sequences of recurring, similar microearthquakes
at Parkfield, California, provide a means for inferring slip rate
at depth throughout the active fault surface from the time intervals
between sequence events. Application of the method using an 11-year
microseismicity record revealed systematic spatial and temporal changes
in the slip rate that were synchronous with earthquake activity and
other independent measures of fault-zone slip. If this phenomenon
is found to be generally common behavior in active faults, it forms
the basis for a method to monitor the changing strain field throughout
a seismogenic fault zone. 10.1126/science.285.5428.718
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