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image from interactive map by USGS showing the location of the earthquakes (red) on Thursday night

Magnitude 3.9 Quake, Aftershocks Recorded On Mauna Loa
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by Big Island Video News
on Mar 24, 2023 at 1:18 pm

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STORY SUMMARY

HAWAIʻI ISLAND - Scientists on Friday explained that the brief seismicity on the Kaʻōiki fault zone was not related to magmatic activity.

(BIVN) – Mauna Loa and Kīlauea volcanoes are not erupting, and a five-hour stretch of earthquake activity on Friday was not related to magmatic activity, scientists say.

On Thursday evening at 5:04 p.m., what was initially reported as a Magnitude 4.1 earthquake on the Kaʻōiki fault zone of Mauna Loa – later revised to a Magnitude 3.9 – was followed in the next 5 hours by over 20 small aftershocks.

The USHS Hawaiian Volcano Observatory reported on Friday that the earthquakes were “not related to magmatic activity within Mauna Loa, and had no effect on Kīlaueaʻs magmatic plumbing system.”

The USGS alert levels for both Kīlauea and Mauna Loa were recently lowered. Kīlauea remains at an ADVISORY, and Manua Loa remains at NORMAL.

No unusual activity has been noted along the Kīlauea Rift Zones, scientists say, where steady rates of ground deformation and seismicity continue.

Resumption of eruptive activity at Kīlauea “may occur in the near future with little or no warning”, the USGS Hawaiian Volcano Observatory says.


Filed Under: Volcano Tagged With: earthquake, Mauna Loa

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