Latitude: N 33°07'33"
Longitude: W 115°54'10"
Length: 280.0m
Number of Bench marks: 8
Number of Surveys to 2000: 6
Date of Initial Survey: 29 March 1989
Date of Latest Survey: 12 November 1994
Trespass Permission: None needed, although the Bureau of Land Management
believes it should be notified of our activities.
Directions:
From Indio, take Hwy 86 about 45 miles south to Hwy 78. Turn right, proceed
2.6 miles, and park. Part of the array crosses the road at that point.
Comments:
This short line is part of a quadrilateral that was established to monitor
future activity on a northeast-striking fault thought to be connected
seismotectonically to the Superstition Hills fault and to the seismo-mechanics
of the Salton basin (Hudnut et a l., 1989).
Results:
The two levelings are compared in an accompanying diagram. The height changes
of the bench marks vary insignficantly among three levelings in three years.
Reference:
Hudnut, K. W., L. Seeber, and J. Pacheco, 1989. Cross-fault triggering in
the November 1987 Superstition Hills earthquake sequence, southern California.
Geophysical Research Letters 16 (2),
Up one level
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