Another report of volcanic unrest was reported in 1993 but an aerial survey of the volcano proved no signs of activity.

VDAP has proven to be effective in saving lives and property by assistance provided to local scientists for determining the nature and possible consequences of volcanic unrest and communicating eruption forecasts and hazard-mitigation information to local authorities.

That and other swarms that have struck are related to the volcanic unrest, according to the United States Geological Survey.

Ruapehu's Volcanic Alert Level remained at level 1 (signs of volcanic unrest).

A period of seismic unrest in 1996-1997 led an international team of scientist to initiate monitoring of the volcanic unrest in the European Union sponsored Geowarn project.

The topography of the island was powerful and muscular, bulging with volcanic unrest, and it was a relief to turn away to hundreds of miles of flat, frozen sea.

The Yellowstone Volcano Observatory (YVO) was formed on 14 May 2001 to strengthen the long-term monitoring of volcanic and earthquake unrest in the Yellowstone National Park region.

The Yellowstone Volcano Observatory monitors volcanic and earthquake unrest in Yellowstone National Park.

Does the USGS have a team of volcanologists that can respond to volcanic unrest on short notice?

During trips to the volcano in 1999 and 2000, signs of volcanic unrest, such as melting of glacier ice, steaming, or discoloration of the ice surface by volcanic ash were not observed.