Sunday, August 28, 2022

Is Mount St Helens Recharging?

Mount St. Helens magma chamber is recharging! More than 88 earthquakes rattled the dangerous volcano in last 30 days instead of the 17 quakes reported normally on average
Strange Sounds

According to PNSN, 88 earthquakes rattled Mount St. Helens in the last 30 days. As shown in the map below, they all lie within the crater.

PNSN also explains on their website that:’[…] on average (not during eruptions or their precursors) they locate about 17 earthquakes a month at Mount St. Helens […].

So 88 quakes are a lot more (a difference of 71 from the monthly average)…

These latest tremors hit at a depth between -1.8 (-1.1 miles) and +10.6km (6.6 miles), with the majority of them being in the depth range 2-4 km (1.2-2.4 miles).

These quakes are related to stresses generated by magma recharge into the main crustal magma system.


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