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Journal of Volcanology and Seismology

, Volume 4, Issue 3, pp 180–192 | Cite as

Water-level changes in the wells of Kamchatka at the time of the M w 7.6, April 20, 2006 Olyutorskii earthquake

  • G. N. Kopylova
  • N. N. Smolina
Article

Abstract

The seismic waves excited by the M w 7.6 Olyutorskii earthquake that occurred on April 20, 2006 in the Koryak Upland gave rise to water-level changes in five wells situated in continental areas of Kamchatka at hypocentral distances of 750–1150 km. We describe the effects due to seismic waves, as well as the water-level anomalies for February–April 2006 before the earthquake. We used an original technique for the processing of water-level records based on the study of barometric and tidal water-level responses in order to estimate the volume strain in water-saturated rocks during synchronous level variations at two wells. We discuss possible mechanisms for producing anomalous water-level changes due to elastic deformation of monitored groundwater reservoirs and to crack dilatancy in the water-saturated rocks.

Keywords

Water Level Seismic Wave Earth Quake Water Level Change Hypocentral Distance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Pleiades Publishing, Ltd. 2010

Authors and Affiliations

  • G. N. Kopylova
    • 1
  • N. N. Smolina
    • 2
  1. 1.Kamchatka Branch, Geophysical ServiceRussian Academy of SciencesPetropavlovsk-KamchatskiiRussia
  2. 2.Kamchatgeologiya OAOPetropavlovsk-KamchatskiiRussia

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