The 2019-2020 volcanic eruption of Late'iki (Metis Shoal), Tonga.
The 2019-2020 volcanic eruption of Late'iki (Metis Shoal), Tonga.
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DOI：
10.1038/s41598-022-11133-8
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发表时间：
2022-05-06
影响因子：
4.6
通讯作者：
Manu MS
中科院分区：
文献类型：
--
作者：
Yeo IA;McIntosh IM;Bryan SE;Tani K;Dunbabin M;Metz D;Collins PC;Stone K;Manu MS
晚伊基火山（以前被称为梅蒂斯浅海）是托福阿岛弧上一座高度活跃的火山，在过去的55年里，至少有四次临时造岛喷发和一次海底喷发。最近一次喷发始于2019年10月，导致熔岩流出和随后的潜水式爆炸，形成了一个短暂的岛屿，很快被波浪作用侵蚀，并可能持续到2020年1月的进一步潜水活动。2019年喷发的双辉石英安岩与1967/8年的喷发相似，表明岩浆是早期喷发的残留物，在过去50年里没有经历进一步的分化。对2019年喷发地点的新观测证实了火山山顶的熔岩主导特征，但仍有一层薄薄的、经过波浪改造的、精细破碎的熔岩物质残留，这被解释为是由喷涌喷发期间热岩石-水相互作用的潜水爆炸产生的。猝灭破碎透明晶岩角砾岩的明显缺失表明，在这些浅层深度非爆炸猝灭破碎作用最小，或者透明晶岩碎屑在我们的峰顶测量区域以外的更深深度重新沉积。
Late’iki (previously known as Metis Shoal) is a highly active volcano in the Tofua arc with at least four temporary island-building eruptions and one submarine eruption in the last 55 years. The most recent eruption, commencing in October 2019, resulted in lava effusion and subsequent phreatic explosions, the construction of a short-lived island that was quickly eroded by wave action and possibly further phreatic activity that continued into January 2020. The two-pyroxene dacite from the 2019 eruption is similar to the 1967/8 eruptions suggesting the magma is residual from earlier eruptions and has not undergone further differentiation in the last 50 years. New observations of the 2019 eruption site confirm the lava-dominant character of the volcano summit but a thin veneer of wave-reworked, finely fragmented lava material remains that is interpreted to have been produced by phreatic explosions from hot rock-water interactions during the effusive eruption. A notable absence of quench-fragmented hyaloclastite breccias suggests that non-explosive quench fragmentation processes were minimal at these shallow depths or that hyaloclastite debris has resedimented to greater depths beyond our summit survey area.
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影响因子：
3.7
作者：
Bryan, Scott E.;Cook, Alex G.;Firn, Jennifer
通讯作者：
Firn, Jennifer
影响因子：
5.3
作者：
Giachetti, T.;Gonnermann, H. M.
通讯作者：
Gonnermann, H. M.
影响因子：
5.2
作者：
Jutzcler, Martin;Marsh, Robert;McPhie, Jocelyn
通讯作者：
McPhie, Jocelyn
DOI：
10.1016/j.jvolgeores.2019.106695
发表时间：
2020-01-15
影响因子：
2.9
作者：
Brandl, Philipp A.;Schmid, Florian;Hannington, Mark D.
通讯作者：
Hannington, Mark D.
DOI：
10.1016/j.jvolgeores.2004.09.019
发表时间：
2005-05-01
影响因子：
2.9
作者：
Liu, Y;Zhang, YX;Behrens, H
通讯作者：
Behrens, H