Mauna Loa volcano (Hawai'i): HVO weekly report

Thu, 23 Apr 2020, 20:57 | BY: MATTHEW

The Hawaiian Volcano Observatory (HVO) recorded 78 small-magnitude earthquakes on Mauna Loa's summit and upper-elevation flanks over the past week. The largest of these earthquakes measured at magnitude 2.3 beneath the south caldera. Most of these earthquakes occurred at depths of less than 8 kilometers (~5 miles) below ground level.

There is continued summit inflation, where HVO claim is consistent with magma supply to the volcano's shallow storage system. Gas concentrations and fumarole temperatures remain stable.

All news about: Maunaloa volcano
Information about: Maunaloa volcano

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Links / Sources:

https://volcanoes.usgs.gov/vhp/updates.html#calvo

Previous news

Sat, 4 Apr 2020, 00:58

Mauna Loa volcano (Hawai'i): HVO weekly report

Over the past week, HVO recorded 47 small-magnitude earthquakes on the Mauna Loa's summit and upper-elevation flanks. Most of these earthquakes occurred at shallow depths of less than 8 kilometers (~5 miles) below ground level, with the largest measuring magnitude 2.1 on the volcano's northwest flank. There is continued slow summit inflation, which HVO state it consistent with magma supply to the volcano's shallow storage system. Gas concentrations and fumarole temperatures remain stable. ... Read all

Fri, 27 Mar 2020, 14:17

Mauna Loa volcano (Hawai'i): HVO weekly report

The Hawaiian Volcano Observatory (HVO) recorded around 42 small-magnitude earthquakes beneath the Mauna Loa's upper elevations. Most of these events occurred at shallow depths of less than 5 km (~3 miles) below ground level. There were no events on Mauna Loa above magnitude 2.0. There is continued slow summit inflation, which HVO say is consistent with magma supply to the volcano's shallow storage system. Gas concentrations and fumarole temperatures remain stable. ... Read all

Thu, 19 Mar 2020, 22:30

Mauna Loa volcano (Hawai'i): HVO weekly report

Location of earthquakes under Mauna Loa over the past week (C) U. S. Geological Survey

The Hawaiian Volcano Observatory (HVO) recorded around 87 small-magnitude earthquakes beneath the volcano's upper elevations over the past week. Most of these events occurred at shallow depths of less than 5 kilometers (~3 miles) below ground level, with the strongest earthquake measuring magnitude 2.3 on the morning of March 19. This earthquake was located in the radial vents area west of the summit caldera within the volcano. There is continued summit inflation which HVO assert is due to “consistent with magma supply to the volcano's shallow storage system.” Both gas concentrations and fumarole temperatures remain stable. ... Read all

Fri, 13 Mar 2020, 14:14

Mauna Loa volcano (Hawai'i): HVO weekly report

The Hawaiian Volcano Observatory (HVO) recorded around 156 small-magnitude earthquakes beneath the volcano's upper elevations over the past week. Most of these earthquakes occurred at shallow depths of less than 5 kilometers (~3 miles) below ground level. The strongest even was a magnitude 2.27 in the morning of March 8. This particular earthquake was located in the radial vents west of the summit caldera within the volcano 0.5 km (0.4 miles) above sea level. Last week's flurry just south on known fault structures south of the northeast rift zone is tapering off. Read all

Sat, 7 Mar 2020, 00:01

Mauna Loa volcano (Hawai'i): HVO weekly report

Mauna Loa caldera, image captured from HVO's MLcam (C) U.S. Geological Survey

HVO recorded around 70 small-magnitude earthquakes beneath the volcano's upper elevations over the past week. Most of these earthquakes occurred at depths of less than 5 kilometers (~3 miles) below ground level. The summit is continually inflating where magma is being supplied to the volcano's shallow storage region. Gas concentrations and fumarole temperatures are both stable. ... Read all

Sat, 29 Feb 2020, 00:59

Mauna Loa volcano (Hawai'i): HVO weekly report

There have been around 80 recorded small-magnitude earthquakes beneath Mauna Loa over the past week with the strongest measuring magnitude 2.9 in the early morning hours of February 27. Most events occurred at shallow depths of less than 5 kilometers (~3 miles) beneath the surface of the summit and upper flanks of the volcano. There is continuous slow summit inflation which HVO say is “consistent with magma supply to the volcano's shallow storage system.” Gas concentrations ad fumarole temperatures remain stable. ... Read all