دورية أكاديمية
Precursor-free eruption triggered by edifice rupture at Nyiragongo volcano.
| العنوان: | Precursor-free eruption triggered by edifice rupture at Nyiragongo volcano. |
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| المؤلفون: | Smittarello, D, Smets, B, Barrière, J, Michellier, C, Oth, A, Shreve, T, Grandin, R, Theys, N, Brenot, H, Cayol, V, Allard, P, Caudron, C, Chevrel, O, Darchambeau, F, de Buyl, P, Delhaye, L, De Rauw, Dominique, Ganci, G, Geirsson, H, Kamate Kaleghetso, E, Kambale Makundi, J, Kambale Nguomoja, I, Kasereka Mahinda, C, Kervyn, M, Kimanuka Ruriho, C, Le Mével, H, Molendijk, Sander, Namur, Olivier, Poppe, S, Schmid, M, Subira, J, Wauthier, C, Yalire, M, d'Oreye, N, Kervyn, F, Syavulisembo Muhindo, A |
| المساهمون: | CSL - Centre Spatial de Liège - ULiège, BE |
| المصدر: | Nature, 609 (7925), 83 - 88 (2022-09) |
| بيانات النشر: | Nature Research, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Multidisciplinary, Physical, chemical, mathematical & earth Sciences, Earth sciences & physical geography, Physique, chimie, mathématiques & sciences de la terre, Sciences de la terre & géographie physique |
| الوصف: | Classical mechanisms of volcanic eruptions mostly involve pressure buildup and magma ascent towards the surface1. Such processes produce geophysical and geochemical signals that may be detected and interpreted as eruption precursors1-3. On 22 May 2021, Mount Nyiragongo (Democratic Republic of the Congo), an open-vent volcano with a persistent lava lake perched within its summit crater, shook up this interpretation by producing an approximately six-hour-long flank eruption without apparent precursors, followed-rather than preceded-by lateral magma motion into the crust. Here we show that this reversed sequence was most likely initiated by a rupture of the edifice, producing deadly lava flows and triggering a voluminous 25-km-long dyke intrusion. The dyke propagated southwards at very shallow depth (less than 500 m) underneath the cities of Goma (Democratic Republic of the Congo) and Gisenyi (Rwanda), as well as Lake Kivu. This volcanic crisis raises new questions about the mechanisms controlling such eruptions and the possibility of facing substantially more hazardous events, such as effusions within densely urbanized areas, phreato-magmatism or a limnic eruption from the gas-rich Lake Kivu. It also more generally highlights the challenges faced with open-vent volcanoes for monitoring, early detection and risk management when a significant volume of magma is stored close to the surface. |
| نوع الوثيقة: | journal article http://purl.org/coar/resource_type/c_6501 article peer reviewed |
| اللغة: | English |
| Relation: | https://www.nature.com/articles/s41586-022-05047-8.pdf; urn:issn:0028-0836; urn:issn:1476-4687 |
| DOI: | 10.1038/s41586-022-05047-8 |
| URL الوصول: | https://orbi.uliege.be/handle/2268/298507 |
| حقوق: | open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
| رقم الأكسشن: | edsorb.298507 |
| قاعدة البيانات: | ORBi |
| DOI: | 10.1038/s41586-022-05047-8 |
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