Submarine terraced deposits linked to periodic collapse of caldera-forming eruption columns
Submarine terraced deposits linked to periodic collapse of caldera-forming eruption columns
复制标题
海底梯田沉积物与形成火山口的喷发柱的周期性崩塌有关
DOI:
10.1038/s41561-023-01160-z
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发表时间:
2023
影响因子:
18.3
通讯作者:
Wanket, Sean
中科院分区:
文献类型:
--
作者:
Gilchrist, Johan T.;Jellinek, A. Mark;Hooft, Emilie E.;Wanket, Sean
Catastrophic, caldera-forming explosive eruptions generate hazardous ash fall, pyroclastic density currents and, in some cases, tsunamis, yet their dynamics are still poorly understood. Here we use scaled analogue experiments and spectral analysis of well-preserved concentric terracing of seafloor deposits built by submarine caldera-forming explosive eruptions to provide insights into the dynamics governing these eruptions and the resultant hazards. We show that powerful submarine eruption columns in collapsing regimes deliver material to the sea surface and seabed in periodic annular sedimentation waves. Depending on the period between successive waves, which becomes shorter with decreasing jet strength, their impact and spread at the sea surface and/or seabed can excite tsunamis, drive radial pyroclastic density currents and build concentric terraces with a wavelength that decreases with distance, or deposits that thin monotonically. Whereas the Sumisu (Izu–Bonin arc) caldera deposit architecture is explained by either a subaerial or deep-water model involving no interaction between sedimentation waves and the sea surface, those of the Macauley (Kermadec arc) and Santorini (Hellenic arc) calderas are consistent with a shallow-water model with extensive sedimentation wave–sea surface–seabed interactions. Our findings enable an explicit classification of submarine caldera-forming explosive eruption dynamics and quantitative estimates of eruption rates from their terraced deposits.
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影响因子:
3.5
作者:
S. Kieffer;E. Meiburg;J. Best;J. Austin
通讯作者:
J. Austin
DOI:
10.1016/j.jvolgeores.2004.11.001
发表时间:
2005-03-15
影响因子:
2.9
作者:
Burgisser, A;Bergantz, GW;Breidenthal, RE
通讯作者:
Breidenthal, RE
影响因子:
12.1
作者:
Giordano, Guido;Cas, Ray A. F.
通讯作者:
Cas, Ray A. F.
影响因子:
2.9
作者:
Hooft, Emilie E.E.;Nomikou, Paraskevi;Toomey, Douglas R.;Lampridou, Danai;Getz, Claire;Christopoulou, Maria-Eleni;O'Hara, Daniel;Arnoux, Gillean M.;Bodmer, Miles;Gray, Melissa
通讯作者:
Gray, Melissa
DOI:
--
发表时间:
1991
期刊:
影响因子:
--
作者:
H. Sigurdsson;S. Carey;C. Mandeville;S. Bronto
通讯作者:
S. Bronto