DOI: 10.1016/j.gloplacha.2012.10.017
论文题名: Climatic fluctuations as a significant contributing factor for volcanic collapses. Evidence from Mexico during the Late Pleistocene
作者: Capra L. ; Bernal J.P. ; Carrasco-Núñez G. ; Roverato M.
刊名: Global and Planetary Change
ISSN: 0921-8364
出版年: 2013
卷: 100 起始页码: 194
结束页码: 203
语种: 英语
英文关键词: Debris avalanche
; Mexico
; Pleistocene climatic record
; Volcano instability
Scopus关键词: Atmospheric moisture content
; Climate oscillation
; Climatic factors
; Climatic fluctuations
; Climatic variation
; Contributing factor
; Debris avalanches
; Debris flows
; Depositional sequences
; Dry condition
; Guatemala
; Late Pleistocene
; Magmatic eruption
; Me-xico
; Nevado de Toluca
; New Mexico
; Pleistocene
; Sector collapse
; Stratovolcanoes
; Structural studies
; Triggering mechanism
; Volcanic activities
; Winter precipitation
; Debris
; Glacial geology
; Landslides
; Stability
; Volcanoes
; climate oscillation
; collapse
; debris avalanche
; depositional sequence
; glaciation
; magmatism
; paleoclimate
; Pleistocene
; stratovolcano
; trigger mechanism
; volcanic eruption
; Mexico [North America]
; Toluca
英文摘要: Climate oscillations have significantly contributed to the planet's evolution, including volcanic activity. Major glaciations have been considered not only as a triggering mechanism for large magmatic eruptions but also inducing volcano instability. Generally, volcano instability can be inferred from detailed volcanological and structural studies of a volcano and its associated depositional sequence, but the triggering mechanism has been always difficult to infer. In this paper, we present evidence of how climatic variations during the Late Pleistocene could have forced sector collapses of the main Mexican stratovolcanoes and enhanced the mobility of associated massive flows inducing the transformation of debris avalanche into debris flows. In particular, the climatic record based on atmospheric moisture content from robustly dated lake record from Guatemala and a U/Th dated speleothem from New Mexico are used here as indicators of summer and winter precipitation. Depositional sequences associated with Late Pleistocene sector collapses of Volcán de Colima, Nevado de Toluca, Citlaltépetl (Pico de Orizaba) and Cofre de Perote volcanoes are here analyzed. Comparing the timing of the event with the climatic record, a combination of summer and/or winter pluvial conditions could have forced and triggered the failure of already unstable volcanoes, even during glacier advances (as for the Citlaltépetl event). Independent of the main cause of the volcano instability (magmatic or tectonic) it is important to highlight that the climatic factor played an important role in enhancing the volcano instability and promoted the lateral transformation of debris avalanches, which under dry conditions would have affected more limited areas. © 2012 Elsevier B.V.. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84868693548&doi=10.1016%2fj.gloplacha.2012.10.017&partnerID=40&md5=0b9de5181109713aa7167fb253ec94b8
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11270
Appears in Collections: 全球变化的国际研究计划
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作者单位: Centro de Geociencias, Campus UNAM Juriquilla, 76230, Queretaro, Mexico
Recommended Citation:
Capra L.,Bernal J.P.,Carrasco-Núñez G.,et al. Climatic fluctuations as a significant contributing factor for volcanic collapses. Evidence from Mexico during the Late Pleistocene[J]. Global and Planetary Change,2013-01-01,100.