A year of lava fountaining at Etna: Volumes from SEVIRI

被引：70
作者：
Ganci, G. [1 ]
Harris, A. J. L. [2 ]
Del Negro, C. [1 ]
Guehenneux, Y. [2 ]
Cappello, A. [1 ,3 ]
Labazuy, P. [2 ]
Calvari, S. [1 ]
Gouhier, M. [2 ]
机构：
[1] Ist Nazl Geofis & Vulcanol, Sez Catania, I-95125 Catania, Italy
[2] Univ Blaise Pascal, Lab Magmas & Volcans, F-63038 Clermont Ferrand, France
[3] Univ Catania, Dipartimento Matemat & Informat, Catania, Italy
来源：
GEOPHYSICAL RESEARCH LETTERS | 2012年 / 39卷
关键词：
MOUNT-ETNA; VOLCANO; ERUPTIONS; FLOWS;
D O I：
10.1029/2012GL051026
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
We present a new method that uses cooling curves, apparent in high temporal resolution thermal data acquired by geostationary sensors, to estimate erupted volumes and mean output rates during short lava fountaining events. The 15 minute temporal resolution of the data allows phases of waxing and peak activity to be identified during short (150-to-810 minute-long) events. Cooling curves, which decay over 8-to-21 hour-periods following the fountaining event, can also be identified. Application to 19 fountaining events recorded at Etna by MSG's SEVIRI sensor between 10 January 2011 and 9 January 2012, yields a total erupted dense rock lava volume of similar to 28 x 10(6) m(3), with a maximum intensity of 227 m(3) s(-1) being obtained for the 12 August 2011 event. The time-averaged output over the year was 0.9 m(3) s(-1), this being the same as the rate that has characterized Etna's effusive activity for the last 40 years. Citation: Ganci, G., A. J. L. Harris, C. Del Negro, Y. Guehenneux, A. Cappello, P. Labazuy, S. Calvari, and M. Gouhier (2012), A year of lava fountaining at Etna: Volumes from SEVIRI, Geophys. Res. Lett., 39, L06305, doi:10.1029/2012GL051026.
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页数：6
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