Seismic activity noted at Medicine Lake Highlands
The sudden rumble of earthquakes beneath Medicine Lake Highlands this fall gave geologists an early warning that one of Northern California's volcanoes may be stirring back to life. Researchers stressed that an eruption of the volcano is not expected soon. But the flurry of underground shocks in late September, combined with new evidence of a pool of molten rock beneath the big volcano, has led them to monitor Medicine Lake with new wariness. The volcano has been dormant since 1910, when it ejected a brief flurry of ash - worrying no one. A federal team plans to take measurements of Medicine Lake, testing for changes in its shape caused by underground pressures. The work is scheduled for spring because snows have made the volcano inaccessible. But the new seismic network is an effective lookout, sensitive to very small increases in activity.
- OSTI ID:
- 7242698
- Journal Information:
- Geothermal Hot Line; (USA), Vol. 18:2; ISSN 0735-0503
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
15 GEOTHERMAL ENERGY
CALIFORNIA
VOLCANIC REGIONS
EARTHQUAKES
GEOLOGIC HISTORY
HISTORICAL ASPECTS
MAGMA
SCHEDULES
SEISMIC ARRAYS
SEISMIC DETECTION
SHAPE
SNOW
VOLCANOES
ATMOSPHERIC PRECIPITATIONS
DETECTION
FEDERAL REGION IX
MEASURING INSTRUMENTS
NORTH AMERICA
SEISMIC EVENTS
USA
580000* - Geosciences
150200 - Geology & Hydrology of Geothermal Systems