Changes in groundwater level associated with the 2003 Tokachi-oki earthquake

Sato, Tsutomu; Matsumoto, Norio; Kitagawa, Y.; Koizumi, Naoji; Takahashi, Makoto; Kuwahara, Yasuto; Ito, Hisao; Cho, Akio; Satoh, Takashi; Ozawa, Kunio; Tasaka, S.

doi:10.1186/bf03353071

Cited by 24 publications

(11 citation statements)

References 12 publications

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“…At KNG2, TYH1, and HTS, several previous postseismic changes in groundwater levels were mainly the same as the postseismic changes associated with the Sumatra earthquake (Tsukuda, 2000;Koizumi et al, 2002;Sato et al, 2005). In the case of the M7.1 and M7.4 off Kii peninsula earthquakes that occurred within 5 hours on September 5, 2004, postseismic groundwater level Table 3.…”

Section: Discussionmentioning

confidence: 99%

Changes in groundwater levels or pressures associated with the 2004 earthquake off the west coast of northern Sumatra (M9.0)

et al. 2006

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Associated with the 2004 earthquake off the west coast of northern Sumatra, changes in groundwater levels or pressures were observed at many observation stations in Japan which are more than 5000 km from the hypocenter. At 38 of the 45 observation stations, there were changes in groundwater levels or pressures. At the 10 observation stations in which the Ishii-type borehole strain instruments were established, changes in crustal strains were also observed. A major part of the changes in crustal strains and groundwater levels or pressures were dynamic oscillations due to a seismic wave. At some stations, coseismic or postseismic rises or drops were also observed. At five stations where both crustal stain and groundwater levels or pressures were observed, postseismic changes in groundwater levels or pressures were consistent with coseismic static steps in crustal strains. At the other five stations, postseismic changes in groundwater levels or pressures did not agree with the coseismic static steps. At two stations of these five stations, it is anticipated that the pore water pressure change in each aquifer locally occurred independently of the change in crustal strain. At another station, postseismic changes in groundwater level possessed the same characteristics as a model removing the temporary deposition. At the last two stations, the causes of the changes are unknown.

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Section: Discussionmentioning

confidence: 99%

Changes in groundwater levels or pressures associated with the 2004 earthquake off the west coast of northern Sumatra (M9.0)

et al. 2006

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“…(e.g., Brodsky et al, 2003;Chia et al, 2008;Cox et al, 2012;King et al, 1999;Kitagawa et al, 2006;Matsumoto and Roeloffs, 2003;Montgomery and Manga, 2003;Roeloffs, 1998;Roeloffs et al, 2003;Sato et al, 2004;Sil and Freymueller, 2006;.…”

Section: Persistent and Delayed Postseismic Changes In Water Level Inmentioning

confidence: 99%

Earthquake Hydrology

Manga

Wang

2015

Treatise on Geophysics

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“…Previous studies [ Roeloffs , 1996; Sato et al , 2004] indicate that drawdown/elevation of groundwater pressure is affected by crustal dilation/contraction. Strain response sensitivity for water pressure changes of artesian groundwater was estimated based on the calculation from earth tide variations [e.g., Roeloffs , 1988; Kawabe , 1991; Kashima et al , 2011].…”

Section: Relationship Between Earthquake‐induced Changes Of Groundwatmentioning

confidence: 99%

Groundwater pressure changes in Central Japan induced by the 2011 off the Pacific coast of Tohoku Earthquake

Niwa

Takeuchi

Onoe

et al. 2012

Geochem Geophys Geosyst

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[1] In the 2011 off the Pacific coast of Tohoku Earthquake, groundwater pressure changes were observed in and around the Mizunami Underground Research Laboratory (MIU) in Central Japan, where two vertical shafts and horizontal research galleries are excavated in the granitic rock mass. Coseismic changes of groundwater pressure are believed to correspond to crustal dilation/contraction induced by earthquakes. In this study we calculated volumetric strain changes due to the Tohoku Earthquake based on previously reported fault slip models. The calculation indicates approximately 2 Â 10 À7 of dilational strain around the MIU. Based on the strain sensitivities calculated from tidal responses at the monitoring boreholes, the dilation corresponds to drawdowns of several tens of centimeters, and is almost the same as the drawdown observed in the boreholes at distances greater than 1 km from the MIU. In contrast, rapid elevation of groundwater pressures associated with the earthquake was observed in the boreholes within the 500 m vicinity of the MIU. The anomalous elevation is explained by a temporary recovery of the drawdown due to excavation of the shafts and a unique permeability increase induced by the coseismic dilation of heterogeneous local geological structures such as impervious faults controlling the hydrogeological environment.

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Changes in groundwater level associated with the 2003 Tokachi-oki earthquake

Cited by 24 publications

References 12 publications

Changes in groundwater levels or pressures associated with the 2004 earthquake off the west coast of northern Sumatra (M9.0)

Changes in groundwater levels or pressures associated with the 2004 earthquake off the west coast of northern Sumatra (M9.0)

Earthquake Hydrology

Groundwater pressure changes in Central Japan induced by the 2011 off the Pacific coast of Tohoku Earthquake

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