Egill Hauksson, Crustal structure and seismicity distribution adjacent
the Pacific and North American plate boundary in southern California,
Geophys. Res., 105, 13,875-13,905, 2000.
These are the shear velocities.
The initial view is approximately to the
north. The most prominent
features are the higher upper mantle velocity
beneath theContinental Borderland. The red (low-velocity) regions are
the surficial (1km depth) expressions
of the southern San Joaquin Valley,
the Los Angeles and Ventura Basins,
and the Imperial Valley The velocities
are linearly interpolated in depth onto a 1 km grid. The vertical exaggeration
factor is about 5.