A Lonely Sentinel — 🌋
Seismic station PLWL, with Peulik Volcano in the background, is the main repeater for the Peulik monitoring network located on Whale Mountain, Becharof National Wildlife Refuge in Alaska. It has a seismometer buried nearby to record earthquake and volcano activity. The USGS Alaska Volcano Observatory has ~200 seismic stations in Alaska spread over almost 2000 miles from Wrangell-St. Elias National Park & Preserve to Little Sitkin near the end of the Aleutian Islands. 🌋
The USGS Volcano Hazards Program monitors volcanoes to detect signs of change that forewarn of volcanic reawakening. When a volcano begins showing new or unusual signs of activity, monitoring data, such as gas, ground deformation and satellite imagery, help answer critical questions necessary for assessing and then communicating timely information about volcanic hazards.
This type of knowledge helps scientists figure out the possible types of volcanic activity and the associated hazards to people. Knowing the hazards helps officials determine which real-time warnings are needed to prevent loss of life and property.
➡️For more information on volcano monitoring and links to real-time data for U.S. volcanoes, please visit: http://on.doi.gov/volcano_monitoring
Photo credit: Cyrus Read, USGS
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