Near-field investigations of the landers earthquake sequence, april to july 1992.

نویسندگان

  • K Sieh
  • L Jones
  • E Hauksson
  • K Hudnut
  • D Eberhart-Phillips
  • T Heaton
  • S Hough
  • K Hutton
  • H Kanamori
  • A Lilje
  • S Lindvall
  • S F McGill
  • J Mori
  • C Rubin
  • J A Spotila
  • J Stock
  • H K Thio
  • J Treiman
  • B Wernicke
  • J Zachariasen
چکیده

The Landers earthquake, which had a moment magnitude (M(w)) of 7.3, was the largest earthquake to strike the contiguous United States in 40 years. This earthquake resulted from the rupture of five major and many minor right-lateral faults near the southern end of the eastern California shear zone, just north of the San Andreas fault. Its M(w) 6.1 preshock and M(w) 6.2 aftershock had their own aftershocks and foreshocks. Surficial geological observations are consistent with local and far-field seismologic observations of the earthquake. Large surficial offsets (as great as 6 meters) and a relatively short rupture length (85 kilometers) are consistent with seismological calculations of a high stress drop (200 bars), which is in turn consistent with an apparently long recurrence interval for these faults.

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منابع مشابه

State of Stress from Focal Mechanisms Before and After the 1992 Landers Earthquake Sequence

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The 1992 Landers Earthquake Sequence: Seismological Observations

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Imaging Co-Seismic Fault Zone Deformation from Air Photos: the Kickapoo Stepover along the Surface Ruptures of the 1992 Landers Earthquake

Co-seismic deformation of the ground can be measured from aerial views taken before and after an earthquake. As a test example we chose the area of the Kickapoo-Landers stepover along the 1992 Landers earthquake zone, using air photos in a scale of 1:40,000 scanned at 0.4 m in resolution. A pair of photos acquired after the earthquake is used to assess the accuracy and evaluate various sources ...

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Coseismic surface deformation from air photos: The Kickapoo step over in the 1992 Landers rupture

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عنوان ژورنال:
  • Science

دوره 260 5105  شماره 

صفحات  -

تاریخ انتشار 1993