Coseismic water level rises in the 30‐m deep Bourdieu Valley (BV) well near Parkfield,
California, have occurred in response to three local and five distant earthquakes. Coseismic …

We review changes in groundwater chemistry as precursory signs for earthquakes. In
particular, we discuss pH, total dissolved solids (TDS), electrical conductivity, and dissolved …

To minimize the loss of life caused by earthquakes, it is crucial to have early warning tools
that provide sufficient warning time. Although various methods are available, their accuracy …

Active faults are commonly associated with spatially anomalously high concentrations of soil
gases such as carbon dioxide and Rn, suggesting that they are crustal discontinuities with a …

Flow rate in many springs increased rapidly after the 1995 Kobe earthquake, which is likely
caused by permeability enhancement. The flow rates at nine springs on Awaji Island near …

Four cases of coseismic changes are observed in water levels recorded at a close network
of wells around seismically active Koyna‐Warna region in western India during 1997–2000 …

The 1995 Hyogo‐ken Nanbu (Kobe) earthquake of M7. 2 occurred on January 17, 1995.
After the earthquake, a scientific drilling program called the Nojima Fault Zone Probe was …

In seismically active areas, tectonic stress deforms and breaks the rocks of the crust.
Ongoing deformation produces detectable modifications in the shallower portions of the …

Abstract Changes in groundwater level during earthquakes have been reported worldwide.
In this study, field observations of co-seismic groundwater-level changes in wells under …

The M w 5.4 Roermond earthquake of 1992 April 13 was one of the strongest events during
the last 500 years in Central Europe. For the period March–May 1992, we collected records …