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Random pictures
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:
Middle part of Southwest Rift Zone at Mauna Loa volcano (image: HVO)
Friday, Jun 05, 2020
During the past week the Hawaiian Volcano Observatory (HVO) recorded 65 small-magnitude earthquakes on the volcano's summit and upper-elevation flanks. Most of these earthquakes occurred at shallow depths of less than 8 km (~5 miles) below ground level. The largest earthquake was with magnitude M 3.2 event that occurred below the volcano's Southwest Rift Zone on 2 June. ... [more]
Southwest Rift Zone at Mauna Loa volcano (image: HVO)
Tuesday, May 26, 2020
During the past week the Hawaiian Volcano Observatory (HVO) recorded 63 small-magnitude earthquakes on the volcano's summit and upper-elevation flanks. Most of these earthquakes occurred at shallow depths of less than 8 km (~5 miles) below ground level. ... [more]
 

Mauna Loa volcano

Shield volcano 4170 m / 13,681 ft
Big Island, Hawai'i, 19.48°N / -155.61°W
Current status: restless (2 out of 5)
Mauna Loa webcams / live data | Reports
Mauna Loa volcano books | Tours
Last update: 5 Jun 2020
Typical eruption style: Dominantly effusive.
Mauna Loa volcano eruptions: 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
TimeMag. / DepthDistanceLocation
Wed, 1 Jul 2020
Wed, 1 Jul 01:04 UTCM 1.8 / 1.2 km6 km22 km ENE of Honaunau-Napoopoo, Hawaii (USA)
Wed, 1 Jul 00:06 UTCM 2.2 / 2.3 km7 km21 km ENE of Honaunau-Napoopoo, Hawaii (USA)
Sat, 27 Jun 2020
Sat, 27 Jun 09:57 UTCM 1.7 / 1 km12 km28 km WNW of Volcano, Hawaii (USA)
Fri, 26 Jun 2020
Fri, 26 Jun 17:55 UTCM 1.9 / 0.7 km12 km28 km WNW of Volcano, Hawaii (USA)
Wed, 24 Jun 2020
Wed, 24 Jun 17:35 UTCM 2.3 / 8.6 km18 km17 km N of P?hala, Hawaii (USA)
View all recent quakes
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.

Background:

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.

Mauna Loa Photos:




Mauna Loa volcano tours
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