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Mauna Loa volcano (Hawaii, United States): slightly elevated seismicity

Thu, 5 May 2022, 12:05
12:05 PM | BY: LEANDRA
Mauna Loa earthquakes over the past week. Photo Credit: USGS.
Mauna Loa earthquakes over the past week. Photo Credit: USGS.
During the past week, HVO seismometers recorded approximately 62 small-magnitude (below M3.0) earthquakes below the summit and upper-elevation flanks of Mauna Loa. The majority of these earthquakes occurred at shallow depths less than 15 kilometers (9 miles) below sea level.

Global Positioning System (GPS) measurements show low rates of deformation in the volcano's summit region continuing through the past week.

Concentrations of sulfur dioxide (SO2), hydrogen sulfide (H2S), and carbon dioxide (CO2), as well as fumarole temperatures, remain stable at both the summit and at Sulphur Cone on the upper Southwest Rift Zone.

Previous news

Fri, 16 Apr 2021, 18:20
This InSAR interferogram shows the overall inflation of Mauna Loa’s summit that occurred from November 2020 to March 2021. It also shows several fringes (color cycles) consistent with subsidence inside Moku‘āweoweo caldera and related to a shallow earthquake that was recorded on March 6, 2021. The red circles show the locations of earthquakes associated with that event as determined by HVO’s seismic network. (Image: USGS-HVO)
Unlike her neighbor Kīlauea to the south, Maunaloa is not erupting, and yet has been arguably more visible in the mainstream news this past month. ... Read all
Wed, 31 Mar 2021, 10:59
Upper part of Mauna Loa SW rift zone (image: HVO)
Another series of a seismic swarm occurred beneath the northwest flank of volcano's summit as the Hawaiian Volcano Observatory (HVO) noted. ... Read all
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