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from Parsons et al (2001). Parsons et al (2001). Bay area shocks during the 75 years before 1906. Bay area shocks during the 75 years after 1906. Bay area is a system of roughly parallel faults. Bay area faults may have fallen under a stress shadow in 1906. from

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From parsons et al 2001

from Parsons et al (2001)


From parsons et al 2001

Parsons et al (2001)


From parsons et al 2001

Bay area shocks during the 75 years before 1906


From parsons et al 2001

Bay area shocks during the 75 years after 1906


From parsons et al 2001

Bay area is

a system of

roughly

parallel

faults


From parsons et al 2001

Bay area faults

may have

fallen under

a stress shadow

in 1906

from

Harris & Simpson

(1998) and Parsons

(2003)


From parsons et al 2001

1992 M=7.3 Landers shock

increases stress

at Big Bear

Landers

Big

Bear

Los

Angeles

First 3 hr of Landers

aftershocks

plotted

from

Stein (2003)


From parsons et al 2001

1992 M=7.3 Landers shock

promotes the M=6.5 Big

Bear shock 3 hr later

Landers

Big

Bear

Los

Angeles

First 3 hr of Landers

aftershocks

plotted

from

Stein (2003)


From parsons et al 2001

…and promotes the

M=7.1 Hector Mine

shock 7 yr later

Hector Mine

Los

Angeles

First 7 yr of

aftershocks

plotted

from

Stein (2003)


From parsons et al 2001

Earthquakes converse through the transfer of stress


From parsons et al 2001

Shinji Toda


From parsons et al 2001

Tom Parsons

Tom Parsons


From parsons et al 2001

Aykut Barka

1952-2002


From parsons et al 2001

Jian Lin


From parsons et al 2001

Jim Dieterich


From parsons et al 2001

Now what?

å


From parsons et al 2001

But can one

explain the

time decay?


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