Earth fissures and localized differential subsidence

Water Resources Research
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Long linear tension cracks associated with declining groundwater levels at four sites in subsiding areas in south-central Arizona, Fremont Valley, California, and Las Vegas Valley, Nevada, occur near points of maximum convex-upward curvature in subsidence profiles oriented perpendicular to the cracks. Profiles are based on repeated precise vertical control surveys of lines of closely spaced bench marks. Association of these fissures with zones of localized differential subsidence indicates that linear earth fissures are caused by horizontal tensile strains probably resulting from localized differential compaction. Horizontal tensile strains across the fissures at the point of maximum convex-upward curvature, ranging from approximately 100 to 700 microstrains (0.01 to 0.07% per year), were indicated based on measurements with a tape or electronic distance meter.

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Publication type Article
Publication Subtype Journal Article
Title Earth fissures and localized differential subsidence
Series title Water Resources Research
DOI 10.1029/WR017i001p00223
Volume 17
Issue 1
Year Published 1981
Language English
Publisher American Geophysical Union
Contributing office(s) Earthquake Hazards Program, Earthquake Science Center
Description 5 p.
First page 223
Last page 227
Country United States
State Arizona, California, Idaho, Nevada, Utah
Other Geospatial Fremont Valley, Las Vegas Valley
Additional Online Files (Y/N) N
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