Mauna Loa volcano (Big Island, Hawaii): seismic swarm
ven, 19 mar 2021, 08:33
08:33 AM | AUTORE: MARTIN
Upper part of Mauna Loa SW rift zone (image: HVO)
The seismic network detected over 40 earthquakes at 0.5-6 km depth located 21 km W-NW of the volcano. The largest recorded event reached magnitude M 3.5. Reported felt events were described as weak shaking, with a maximum Intensity of II on the Modified Mercalli Intensity Scale.
These earthquakes do not show any signs of magmatic involvement and are part of normal re-adjustments of the volcano due to changing stresses within it.
Other monitoring data streams for Kīlauea and Mauna Loa, including ground deformation, gas, and imagery, show no signs of increased activity.
Source: Hawaiian Volcano Observatory volcano activity update 19 March 2021
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