Dynamics of the January 2013–June 2014 explosive-effusive episode in the eruption of Volcán de Colima, México: insights from seismic and video monitoring
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- 作者：Vyacheslav M. Zobin ; Raúl Arámbula ; Mauricio Bretón…
- 关键词：Volcán de Colima ; Eruption of January 2013–June 2014 ; Volcanic explosion ; Lava dome ; Video monitoring ; Seismic monitoring
- 刊名：Bulletin of Volcanology
- 出版年：2015
- 出版时间：April 2015
- 年：2015
- 卷：77
- 期：4
- 全文大小：3,652 KB
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- 出版者：Springer Berlin Heidelberg
- ISSN：1432-0819
文摘
Simultaneous seismic and video monitoring of the January 2013–June 2014 eruptive episode at the andesitic Volcán de Colima, México, allowed a detailed study of dynamics of eruption processes. The episode developed in two main phases: explosive, consisting of four Vulcanian explosions between 6 to 29 January 2013, and effusive, when the new crater excavated by the explosive sequence was filled, and a lava cap partially covered the 2007-011 lava dome increasing the height of the lava dome in the crater from 3,854 to 3,881?m. The volume of this new lava dome above the reference level of 3,836?m was estimated as 1.3?×-06?m3. The mean rate of magma discharge during the growth of the new lava dome was estimated as 0.27?m3/s. Lava effusion was effectively finished by October 2013. The period from November 2013 to July 2014 was characterized by a gradual decrease in the number of small explosions and rockfalls. A conceptual model of this eruption episode is proposed. The ascent of magma began in the conduit at the depths of about 1,000?m beneath the crater according to the locations of explosive earthquakes. The January explosive sequence opened a pathway of magma to the surface. The ascending magma filled the western part of the crater forming a new lava dome.