U.S. Geological Survey scientists continue to monitor the Mammoth Lakes area where a swarm of some 500 smaller magnitude quakes have rocked the area around Mammoth Airport. Scientists say the swarm poses no immediate danger.
The “earthquake swarm” shook the Long Valley Caldera area north of Fresno, an area that has seen an increased amount of quakes, volcanic gas emissions and other disturbances in recent decades, the U.S. Geological Survey (USGS) said.
“These are just kind of ordinary, everyday earthquakes,” said USGS spokeswoman Leslie Gordon.
Eight of the quakes were recorded between 3.0 and 3.8 magnitude and the rest were less serious, the agency added.
The caldera, or circular volcanic depression, was formed following a massive eruption about 760,000 years ago and last erupted about 50,000 years ago, the USGS said.
Agencies/Canadajournal
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