Since mid-September, Mauna Loa volcano, the largest in the world and located in the Hawaiian Islands, has been showing some activity within it, forcing scientists to be very aware of it.. The National Park surveillance system confirmed that 47 minor earthquakes were recorded under this formation’s caldera this Tuesday, but it also put the population at ease by pointing out that there are currently no signs of an imminent eruption. Even if, The yellow alert is active and some public activities in Mauna Loa National Park have been suspended. This volcano usually erupts every six years.
“The current earthquakes are most likely due to renewed magma influx 3 or 8 kilometers below the peak of Mauna Loa,” the National Park alert service said in its daily updated information on the activity. volcano.
The 47 tremors recorded this Tuesday (and similar numbers in previous days) are occurring at a depth of 2-5 kilometers below the caldera. From Mokuʻāweoweo and 6-8 kilometers below the upper elevation of the northwest flank of Mauna Loa. Its magnitude is less than 3.0. These are areas that have historically been seismically active in similar sections.
GPS devices distributed on the summit and slopes of the volcano, the ground deformation produced by these earthquakes currently measures very few relevant values, and also the sulfur dioxide, CO2 and hydrogen sulfide concentrations and the temperature of the fumaroles “stay constant” according to the latest report.
These signs of activity began in mid-September, with the rate of earthquakes recorded at the summit of the volcano increasing from 10-20 per day to 40-50 per day and an increase in ground deformation. All this forced them to settle on yellow alert, without hinting at the imminent danger of an eruption, this Hawaiian island’s scientists insist.
This is, according to volcanologists, Magma entry into Mauna Loa’s summit reservoir system. As this reservoir expands, it causes small earthquakes directly below the caldera and a region to the northwest.
world’s largest volcano
Mauna Loa is the largest active volcano on the planet. It has an area of approximately 5,271 square kilometers and has a width of about 120 kilometers. Due to these dimensions, the volcano occupies almost half of the island of Hawaii. It is approximately 4,169-4,170 meters above sea level. Its approximate volume is 75,000-80,000 cubic kilometers.
Mauna Loa is dome-shaped; At its summit is a caldera called Mokuʻāweoweo with a depth of 183 meters. It has 4 collapse craters formed by the collapse of the surface above a vacuum chamber. These craters are: Lua Hohonu, Lua Hou, Lua Poholo and South Pit. The first two are located southwest of the caldera.
Smithsonian Institution Global Volcanism Program counted at least 109 confirmed explosions. The first well-documented eruption dates back to 1843. and has since removed more than 35 interior items. Its eruptions are of the Hawaiian type, occurring at the apex or at one of the fissures, and on average, Mauna Loa volcano erupts every 6 years.
Update information on the status of the volcano: https://www.nps.gov/havo/planyourvisit/maunaloaupdate.htm
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Environment department contact address:crisclimatica@prensaiberica.es
Source: Informacion
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