Geology topics

Ronald G. Mason

Publications and source records attributed to Ronald G. Mason.

2 recordsLinked to original sources

USGS1981

Mekometer measurements in the Imperial Valley

During the six weeks following the October 15, 1979 earthquake, parts of the Imperial Valley Mekometer network (Fig. 1) around the Imperial fault to the east of El Centro were re-measured, some repeatedly, in an attempt to assess the coseismic and postearthquake slip on the fault, and horizontal strain adjustment around it. This report presents the results, together with the most recent pre-earthquake measurements, for comparison. It includes also a brief discussion of the results.

California↗

USGS1980

Mekometer measurements in the Imperial Valley, California, 1980

During a six-week period in the Spring of 1980, approximately seven months after the October 15, 1979 earthquake, parts of the Imperial Valley mekometer network (Fig. 1) were re-measured for comparison with measurements made during the twelve months preceding the earthquake and the six weeks following it. The purpose was to extend the area covered by the postearthquake measurements, and to establish the rate of adjustment at a time intermediate between the immediate postearthquake period of rapid change and the long-term "steady" state.

California↗