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Mauna Loa volcano with gentle slopes typical of a shield volcano.
Mauna Loa volcano with gentle slopes typical of a shield volcano.

Mauna Loa activity update:
mer, 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. ... leggere tutti
Fri, 19 Mar 2021, 08:33
Upper part of Mauna Loa SW rift zone (image: HVO)
The Hawaiian Volcano Observatory (HVO) reported that a swarm of small earthquakes occurred at 15:46 local time yesterday beneath the southeastern flank of Mauna Loa volcano and northwestern summit of Kilauea volcano at zone known as upper Ka'ōiki. ... leggere tutti

Mauna Loa vulcano

Shield volcano 4170 m / 13,681 ft
Big Island, Hawai'i, 19.48°N / -155.61°W
Stato attuale: inquieto (2 di 5)
Last update: 31 Mar 2021 (ongoing seismic swarm)

Mauna Loa is the world's largest and one of its most active volcanoes - a giant shield volcano on the Big Island of Hawai'i.

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Stile eruttivo tipico: Dominantly effusive.
Eruzioni del vulcano Mauna Loa: 1832, 1843, 1849, 1851, 1852, 1855-56, 1859, 1865-66, 1868, 1870(?), 1871, 1872, 1873, 1873-74, 1875, 1876, 1877, 1879, 1880, 1880-81, 1887, 1892, 1896, 1899, 1903, 1907, 1914-15, 1916, 1919, 1926, 1933, 1935-36, 1940, 1950, 1975, 1984

Latest nearby earthquakes

Data / oraMag. / ProfonditàDistanzaUbicazione
Sun, 11 Apr 2021 (GMT) (5 Terremoti)
11 Apr 2021 09:07:06 GMT
2.1

7 km - Di più
9.5 km17 Km E of Honaunau-Napoopoo, Hawaii, USA
11 Apr 2021 08:03:26 GMT
1.7

33 km - Di più
34 km4 Km ENE of Pāhala, Hawaii, USA
11 Apr 2021 07:32:55 GMT
2.2

34 km - Di più
39 km11 Km E of Pāhala, Hawaii, USA
11 Apr 2021 07:12:19 GMT
2.0

37 km - Di più
37 km5 Km ESE of Pāhala, Hawaii, USA
11 Apr 2021 06:23:04 GMT
0.9

3 km - Di più
4.5 km22 Km E of Honaunau-Napoopoo, Hawaii, USA

Sfondo

Mauna 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. Although not erupting as frequently as its younger neighbor Kilauea, it is also one of the most active volcanoes of the world. When it erupts, its eruptions are usually huge and produce large rivers of lava that have repeatedly threatened the town of Hilo.
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. 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. emplaced after the formation of the Mokuaweoweo summit caldera.


See also: Sentinel hub | Landsat 8
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