Weather affects timing of some natural hazards

Weather affects timing of some natural hazards

Seasonal patterns in earthquakes and volcanic eruptions can be linked to rain and snow

By Alexandra Witze, 16:55 PM December 9, 2011

SAN FRANCISCO — If you want to know the chance of an earthquake in the Himalayas or a volcanic eruption in Iceland, check the calendar. Seasonal patterns of rainfall and snowfall can affect how often quakes and volcanoes go off, scientists reported December 8 at a meeting of the American Geophysical Union.

In the Himalayas, the weight of water from monsoon rains helps dampen seismicity for a few months each year, says geophysicist Thomas Ader of Caltech. Seismic records collected from 1998 ...

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