2022
DOI: 10.1038/s41598-022-23998-w
|View full text |Cite
|
Sign up to set email alerts
|

Shallow magmatic intrusion evolution below La Palma before and during the 2021 eruption

Abstract: La Palma, Canary Islands, underwent volcanic unrest which culminated in its largest historical eruption. We study this unrest along 2021 using Interferometric Synthetic Aperture Radar (InSAR) and a new improved interpretation methodology, comparing achieved results with the crustal structure. We reproduce the final phase of La Palma volcanic unrest, highligthing a shallow magma accumulation which begins about 3.5 months before the eruption in a crustal volume charactherized by low density and fractured rocks. … Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1

Citation Types

6
37
0

Year Published

2023
2023
2024
2024

Publication Types

Select...
7

Relationship

1
6

Authors

Journals

citations
Cited by 18 publications
(43 citation statements)
references
References 45 publications
6
37
0
Order By: Relevance
“…On the basis of the record from eroded rift systems of other islands, these eruptions are fed by a tightly packed dyke swarms within the rifts ( 14 , 15 ). The intrusion of one such dyke, or possibly a series of dykes, initiated the eruption on the western flank of the CVR on September 19 ( 16 , 17 ).…”
Section: Introductionmentioning
confidence: 99%
“…On the basis of the record from eroded rift systems of other islands, these eruptions are fed by a tightly packed dyke swarms within the rifts ( 14 , 15 ). The intrusion of one such dyke, or possibly a series of dykes, initiated the eruption on the western flank of the CVR on September 19 ( 16 , 17 ).…”
Section: Introductionmentioning
confidence: 99%
“…Pressure sources initially located along the border separating the Northern Volcanic Complex and CV 14 enhanced magma movement towards an even shallower reservoir below the Jedey zone (Fig. 1), in a low-density zone at ~1-5 km depth 17 .…”
Section: Discussionmentioning
confidence: 99%
“…NVC hosts the volcanic buildings of Garafía, Taburiente, Cumbre Nueva and Bejenado, whereas the CV edifice is a younger rift-type structure, along which both recent and historical on-land volcanic activity has taken place. Magma arrives to shallow crustal regions below the island from depth, probably following pre-existing intrusion paths in a zone with low density and weakness [15][16][17] below the Jedey zone. Seismicity that occurred in 2017-2020 appears to be related to rock fracturing below CV 14 , opening the path towards the shallow and short-term reservoir below the Jedey zone 17 (Fig.…”
mentioning
confidence: 99%
See 2 more Smart Citations