Detection of volcanic unrest onset in La Palma, Canary Islands, evolution and implications

被引:42
作者
Fernandez, Jose [1 ]
Escayo, Joaquin [1 ]
Hu, Zhongbo [2 ]
Camacho, Antonio G. [1 ]
Samsonov, Sergey, V [3 ]
Prieto, Juan F. [4 ]
Tiampo, Kristy F. [5 ]
Palano, Mimmo [6 ]
Mallorqui, Jordi J. [2 ]
Ancochea, Eumenio [7 ]
机构
[1] UCM, CSIC, Inst Geociencias, Calle Doctor Severo Ochoa 7,Ciudad Univ, Madrid 28040, Spain
[2] Univ Politecn Cataluna, CommSensLab, D3-Campus Nord UPC,C Jordi Girona 1-3, Barcelona 08034, Spain
[3] Nat Resources Canada, Canada Ctr Mapping & Earth Observat, 560 Rochester St, Ottawa, ON K1A 0E4, Canada
[4] Univ Politecn Madrid, ETS Ingn Topog Geodesia & Cartog, Madrid 28031, Spain
[5] Univ Colorado, Cooperat Inst Res Environm Sci CIRES, 216UCB, Boulder, CO 80309 USA
[6] Ist Nazl Geofis & Vulcanol, Sez Catania, Osservatorio Etneo, Piazza Roma 2, I-95125 Catania, Italy
[7] Univ Complutense Madrid, Fac CC Geol, Dept Mineral & Petrol, Madrid 28040, Spain
关键词
D O I
10.1038/s41598-021-82292-3
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
La Palma island is one of the highest potential risks in the volcanic archipelago of the Canaries and therefore it is important to carry out an in-depth study to define its state of unrest. This has been accomplished through the use of satellite radar observations and an original state-of-the-art interpretation technique. Here we show the detection of the onset of volcanic unrest on La Palma island, most likely decades before a potential eruption. We study its current evolution seeing the spatial and temporal changing nature of activity at this potentially dangerous volcano at unprecedented spatial resolutions and long time scales, providing insights into the dynamic nature of the associated volcanic hazard. The geodetic techniques employed here allow tracking of the fluid migration induced by magma injection at depth and identifying the existence of dislocation sources below Cumbre Vieja volcano which could be associated with a future flank failure. Therefore they should continue being monitored using these and other techniques. The results have implications for the monitoring of steep-sided volcanoes at oceanic islands.
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页数:15
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