The Icelandic Met has issued a new bulletin about magma buildup in the Svartsengi area. Their current estimate of magma buildup based on surface deformation/land rise is 14 million cubic meters, which is equal or greater to the amounts which previously triggered eruptions in the area. They're advising that another eruption may be imminent and with very little warning, as the ground is already heavily fractured.
Deuxième plus longue éruption du Reykjanes après celle du Geldingadalir en 2021 (6 mois) qui avait marqué le réveil du secteur après 1000 ans de sommeil.
When Hunga Tonga-Hunga Ha’apai erupted in January 2022, the underwater volcano in the South Pacific unleashed the most intense lightning storm ever recorded and set off a mega-tsunami that was hundreds of feet high. Research indicated the eruption was fueled by two merging magma chambers. Now, scientists are looking at another potential trigger. Live Science has more: https://flip.it/ZAjd2N #Science#Geology#Volcano#Eruption#Tonga
In Iceland, they're in the process of building a second set of magma defense berms on Grindavik's eastern flanks. The primary berm system has been overflowed twice in recent weeks and lava piled up behind the existing berms is taller than the berms now across much of their length.
The new berms will be 6 meters high and offset from the original ones by about 120 meters.
The problem as I see it is there isn't really a way for this new berm system to rechannel/divert lava which spills over elsewhere. It's more forming a "catchment basin" with with a fixed dimension and volume. When it's full, it's full.
Right now, it's what they can do. Mother nature doesn't argue, she simply does what she does. Will she keep spewing out lava in this location for years?
Looks like we're starting to see a lot of small but very shallow tremors in the vicinity of Svartsengi. Svartsengi has continued to see significant land uplift even with the outflow of magma in the area, indicating significant and rising magma levels below the surface. How much longer until the area sees another significant eruption?
All The Science Bubbling Beneath California’s Most Volcanic Park
At Lassen Volcanic National Park, learn all about how magma turns to mountains—then hike to the top of them. Visit California February 5, 2024
"...Lassen Peak towers over the park. It’s over 10,000 feet tall, and an example of a plug dome, or lava dome, volcano. These volcanoes are defined by their thick, viscous lava, which piles up and creates a steep dome-like shape. Lassen last erupted over a period of three years, just over 100 years ago: 1914 to 1917. In May of 1915, an explosive eruption caused a mud flow: the hot rocks erupting from the volcano mixed with snow, creating an avalanche-like flow of mud that destroyed a patch of surrounding land. This is now called the Devastated Area, which includes a gentle trail, a few enormous rocks that were once expelled from the nearby peak, and signs that tell you the story of the 1915 explosion..."
Il y a des plantes qui arrivent à bien pousser sur de la roche volcanique et/ou des étendues désertiques, comme cette Silène acaule aperçue au pied du cratère de Geitahlíð.
How Indonesia’s Toba Volcano Changed Human Evolution
The massive supervolcano eruption 74,000 years ago has been blamed for nearly killing off our species. The emerging truth is much more interesting - by Gemma Tarlach April 29, 2024
"...Stone tools have been found both above and below layers of Toba ash deposited in northern India, the Arabian Peninsula, and elsewhere, showing that humans were present in those areas before and after the catastrophic eruption. They found ways to weather the actual event and any changes in climate that followed. And in March, after decades of research in a remote corner of Ethiopia, a multidisciplinary team determined that humans there survived shifts in climate likely caused by the distant eruption by changing their diet and, quite possibly, innovating a new hunting technique: archery..."
La randonnée, un bon moyen d’apercevoir des paysages formidables. Photo prise le 10 février dernier, près du lac Djùpavatn au cœur du système volcanique de Krysuvik.
A rescue ship and a warship were dispatched to help move thousands from neighbouring #TagulandangIsland north to #SiauIsland because of a warning about parts of the volcano falling into the sea potentially causing a #tsunami. #MountRuang#RuangVolcano
Indonesia's Ruang volcano erupted on Tuesday, spewing lava as lightning flashes lit up its crater, prompting authorities to raise the alert status and evacuate more than 12,000 people living on a nearby island. The Center for Volcanology and Geological Hazard Mitigation (PVMBG) had warned the residents of Tagulandang island that...
Indonesia's Ruang volcano erupts, more than 12,000 people evacuated (www.reuters.com)
Indonesia's Ruang volcano erupted on Tuesday, spewing lava as lightning flashes lit up its crater, prompting authorities to raise the alert status and evacuate more than 12,000 people living on a nearby island. The Center for Volcanology and Geological Hazard Mitigation (PVMBG) had warned the residents of Tagulandang island that...