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Mauna Loa Vulkan
Shield volcano 4170 m / 13,681 ft
Big Island, Hawai'i, 19.48°N / -155.61°W
Aktueller Status: unruhig (2 von 5)
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Volcano news: Mauna Loa volcano (Big Island, Hawaii)

Mauna Loa volcano (Hawai'i) - earthquake swarm as possible sign of gradual reawakening

Wednesday Sep 18, 2013 10:51 AM | VON: T

Recent earthquakes under Mauna Loa volcano
Recent earthquakes under Mauna Loa volcano
A small earthquake swarm occurred last week under the volcano. During 5-7 September, HVO detected about 350 small earthquakes up to magnitude 2.4 in a tightly clustered area at about 7 km depth west of the summit caldera. Only about 25 were strong enough to be located (map).
The swarm was in the same region where earthquakes began to occur a year or more before Mauna Loa's 1975 and 1984 eruptions. A likely interpretation is that the most recent swarm is a sign that some magma has intruded at the base of the volcano.
It is certainly no sign of an impending eruption in the very near future, but suggests that Mauna Loa, which still is the world's largest ACTIVE volcano, on the medium term, continues to prepare itself for its next eruption.
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Vorherige Nachrichten
Friday, Jul 05, 2013
Very weak unrest in the form of inflation and seismic activity continues at the largest active volcano of our earth, which has not erupted since 1984. However, this activity is not strong enough to justify a raise of the alert level from green "normal" to yellow "unrest". There is currently no sign that Mauna Loa will erupt any time soon. ... [mehr]
Wednesday, Jun 12, 2013
The latest update of the USGS mentions that minor inflation of a shallow magma reservoir beneath Mauna Loa may be occurring. Seismicity rates were slightly elevated. However, the level of observed seismicity is far from alarming and the alert level remains at green. No eruption is expected in the near future. ... [mehr]

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