Prior to this activity, the most recent earthquake swarm beneath Mauna Loa summit occurred in the Spring of 2021, producing about a thousand earthquakes over a span of seven weeks with a peak seismicity rate of 40 earthquakes per day.Ĭoncentrations of sulfur dioxide (SO2), hydrogen sulfide (H2S), and carbon dioxide (CO2), and fumarole temperatures remain stable at both the summit and Sulphur Cone (upper Southwest Rift Zone) gas stations.Ĭurrently, other Mauna Loa monitoring data streams, such as ground deformation and gas concentrations, show no significant changes. This activity is a relatively small increase in volcanic unrest and remains within the range of fluctuations observed over the past several years. Global Positioning System (GPS) measurements show steady rates of deformation in the volcano’s summit region continuing through the past week. He loves the kahlua pork - its too salty for me. After being on Maui last January, my boyfriend who goes there often for work, took me to Da Kitchen.
During the earthquake swarm, a minor tilt increase of 1.5 microradians was observed on one tiltmeter (MOK) at the summit, though a small part of this signal includes normal diurnal effects. Delivery & Pickup Options - 281 reviews of Mauna Loa Hawaiian BBQ 'A great little Hawaiian restaurant has opened where a sushi restaurant used to be - Tomoe Sushi I never went there. Most of these earthquakes occurred around 2 mi (3 km) below the surface and the largest event in the swarm was a magnitude-2.8. Of the 206 earthquakes recorded over the past week, 90 were part of an earthquake swarm that occurred beneath Moku‘āweoweo, Mauna Loa’s summit caldera, from approximately 5:20 p.m. The majority of these earthquakes occurred at shallow depths less than 9 miles (15 kilometers) below sea level. The USGS Hawaiian Volcano Observatory reported on Thursday that rates of seismicity under Mauna Loa “temporarily increased above long-term background levels the evening of August 2, 2022, and returned to background levels by the morning of August 3, 2022.”įrom the USGS observations posted on August 4th:ĭuring the past week, HVO seismometers recorded approximately 206 small-magnitude (below magnitude 3.0) earthquakes beneath the summit and upper-elevation flanks of Mauna Loa. Mauna Loa is not erupting and remains at a Volcano Alert Level of ADVISORY. (BIVN) – A short-lived earthquake swarm was detected under Mauna Loa volcano this week, but the rates of seismicity have since returned to background levels.
emplaced after the formation of the Mokuaweoweo summit caldera.USGS webcam image taken on August 4, 2022, from a temporary research camera positioned on the north rim of Mokuʻāweoweo, the summit caldera of Mauna Loa volcano. Almost 90% of Mauna Loa's surface is is covered by lavas less than 4000 years old, while about 50% of its surface is covered by lavas no older than about 1500 years old, while about 25% are covered by lava flows younger than about 750 years, i.,e. Mauna Loa rises almost 9 km above the sea floor and the weight of the massive mountain has depressed the oceanic crust down by about 8 kilometers, so the whole pile of volcanic rocks produced from Mauna Loa is probably about 8+5+4=17 kilometers! It has eruptions both from its summit, occupied by a large caldera, and its NE and SW rift zones on the flanks. When it erupts, its eruptions are usually huge and produce large rivers of lava that have repeatedly threatened the town of Hilo. Although not erupting as frequently as its younger neighbor Kilauea, it is also one of the most active volcanoes of the world.
View recent quakes BackgroundMauna Loa, world's largest mountain and volcano, is a archetype of a basaltic shield volcano in its late mature stage of life, and only about 600,000-1,000,000 years old.
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