Fig. 2. (A) Failure stress
changes (=0.4)
caused by the four MLŽ5.2 shocks within 50 km of the Landers earthquake occurring
during 17 yr before the right-lateral Landers rupture. The Landers surface rupture
tends to lie within the zone of elevated stress change, and is favorably oriented
for right-lateral failure (black lines). Upper left corner is at 34.64°N/116.84°W;
lower left corner is at 33.75°/116.08°W. (B) Failure stress changes
(=0.4)
preceding the left-lateral Big Bear aftershock of the Landers earthquake. The
stress change at the Big Bear epicenter is 3.0 bars and is optimally oriented
for left-lateral failure (white lines). The Landers rupture is divided into
11 slip segments from preliminary fault mapping (32) and seismic analyses (31).
From north to south, assigned Landers slip segments are: 1.0, 2.0, 3.0, 4.0,
6.0, 8.0, 5.0, 3.5, 5.0, 3.5, and 0.25 m. Upper left corner is at 35.00°N/117.44°W;
lower left corner is at 33.66°N/115.70°W.
R. S. Stein, G. C. P. King and J. Lin,
Change in failure stress on the southern San Andreas fault system caused
by the 1992 Magnitude=7.4 Landers earthquake, Science, 258, pp. 1328-1332,
1992.
=0.4)
caused by the four MLŽ5.2 shocks within 50 km of the Landers earthquake occurring
during 17 yr before the right-lateral Landers rupture. The Landers surface rupture
tends to lie within the zone of elevated stress change, and is favorably oriented
for right-lateral failure (black lines). Upper left corner is at 34.64°N/116.84°W;
lower left corner is at 33.75°/116.08°W. (B) Failure stress changes
(