Two weeks later Nyiragongo erupted
resulting in half a million evacuees!
Yasur Volcano
(2002)
On January
3, 2002 a magnitude 7.3 earthquake hit the island nation of Vanuatu.
Two days later
Yasur volcano increased its eruptive activity. On January 16, 2002 the
Vanuatu
Red Cross was
preparing evacuation plans for part of the island of Tanna due to the contaminated
water supplies
and increased
ash fall.
California (1992)
Southern California's largest earthquake
since 1952, M 7.5 occurred on 28 June 1992.
It appeared to trigger seismicity
at several volcanic centers in California.
The earthquake was centered roughly
200 km E of Los Angeles. Marked increases in microseismicity were
observed at Lassen Peak, Medicine Lake caldera, and the Geysers. No earthquakes
were observed at Shasta, but the lack of operating stations on the volcano
limited the capability to observe small events. Within eight minutes
of the major earthquake's origin time, seismic activity within Long Valley
caldera (400 km NNW of the epicenter) increased abruptly. Of the
>260 events located by the RTP system during the next three days, three
were of M 3 or greater. (GVP)
Ulawun Volcano
(1983)
Volcano-seismic activity increased
suddenly with the appearance of continuous harmonic tremor at 0200 on 24
December, less than 2 days after two strong regional earthquakes (ML 6.4
and 6.5, MM IV-V) about 150 km ESE of Ulawun Volcano (Papua New Guinea)
at 0932 and 1102 on 22 December 1983.
Effects of volcano-tectonic earthquakes
on Volcanoes
