Deep seismo-volcanic tremors constrain the magma supply from the mantle

Abstract

Volcanic eruptions are driven by magma supplied from the mantle, yet deep magmatic flux remains poorly constrained. Here we propose to quantify it based on deep seismic tremors. We adopt a model of tremor generation by rapid growth of gas bubbles in response to magma decompression and establish a physical relationship between the cumulative seismic moment and the volume of the ascending magma. By applying this approach to the Klyuchevskoy Volcanic Group in Kamchatka, we estimate the deep magma volumetric supply rate of the order of 1 km3 per year which is con-sistent with the very high eruptive activity of these volcanoes. The proposed framework provides a new way to probe magma transport at depth and improves constraints on future volcanic activity and associated hazards.

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BibTeX

@misc{lu2026deep,
  title = {{Deep seismo-volcanic tremors constrain the magma supply from the mantle}},
  author = {Weifan Lu and Nikolai M. Shapiro and Oleg Melnik and Vladimir Lyakhovsky and Jannes Münchmeyer and Cyril Journeau and Jean Soubestre and Léonard Seydoux},
  howpublished = {EarthArXiv},
  year = {2026},
  month = sep,
  doi = {10.31223/x5hj77},
  url = {https://eartharxiv.org/repository/view/15186/},
  note = {CC BY-NC-ND 4.0},
}

RIS

TY  - UNPB
TI  - Deep seismo-volcanic tremors constrain the magma supply from the mantle
AU  - Weifan Lu
AU  - Nikolai M. Shapiro
AU  - Oleg Melnik
AU  - Vladimir Lyakhovsky
AU  - Jannes Münchmeyer
AU  - Cyril Journeau
AU  - Jean Soubestre
AU  - Léonard Seydoux
PY  - 2026
DA  - 2026/09/24
PB  - EarthArXiv
DO  - 10.31223/x5hj77
UR  - https://eartharxiv.org/repository/view/15186/
AB  - Volcanic eruptions are driven by magma supplied from the mantle, yet deep magmatic flux remains poorly constrained. Here we propose to quantify it based on deep seismic tremors. We adopt a model of tremor generation by rapid growth of gas bubbles in response to magma decompression and establish a physical relationship between the cumulative seismic moment and the volume of the ascending magma. By applying this approach to the Klyuchevskoy Volcanic Group in Kamchatka, we estimate the deep magma volumetric supply rate of the order of 1 km3 per year which is con-sistent with the very high eruptive activity of these volcanoes. The proposed framework provides a new way to probe magma transport at depth and improves constraints on future volcanic activity and associated hazards.
ER  -

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