Subsidence and Uplift in the Santa Clara Valley, 1997

By Land Subsidence in California 1997 (approx.)

Displacement map (interferogram) of the Santa Clara Valley and shaded relief of the same interferogram

Detailed Description

Interferogram of Santa Clara Valley, California, shows patterns of subsidence and uplift occurring over 7 months in 1997, from January 4 to August 2. A central subsidence zone, (red) the result of seasonal groundwater pumping, is fully recoverable.

Sources/Usage

Public Domain.