No demonstrated link between sea-level and eruption history at Santorini

This is a Preprint and has not been peer reviewed. This is version 1 of this Preprint.

Downloads

Download Preprint

Authors

Richard Walker , Simon Gill, Catherine Greenfield, Ken McCaffrey, Tara Louise Stephens 

Abstract

Previous studies have suggested a link between rates of sea-level variation and eruptions globally [McGuire et al., 1997], with Satow and coauthors [2021] presenting the first detailed comparison between sea-level change and eruptive history for a single island-volcano. They use robust, high-resolution ages for volcanic deposits at Santorini, combined with a 2D numerical model to correlate sea-level reduction with volcanism. Lowering sea level reduces overburden pressure and is predicted to increase tensile stress in the magma chamber roof, leading to diking and eventually eruption. Having independently reproduced their results, we disagree with the numerical model for three main reasons: (1) predictions of stress distribution and magnitudes caused by sea level change are solely dependent on the size and boundary conditions of the 2D model; (2) minor changes to the model dimensions, dimensionality (2D to 3D), and/or addition of a mantle analogue, removes correlation between sea level and eruptions; and (3) crustal loading conditions at the volcano absent from the model are more significant than sea level change.

DOI

https://doi.org/10.31223/X5961N

Subjects

Physical Sciences and Mathematics

Keywords

Sea level, Volcano, Eruption, Santorini, Finite Element simulation

Dates

Published: 2021-08-24 08:23

Last Updated: 2021-08-24 12:23

License

CC BY Attribution 4.0 International

Additional Metadata

Conflict of interest statement:
None

Data Availability (Reason not available):
Please see comments to Editor

Add a Comment

You must log in to post a comment.


Comments

There are no comments or no comments have been made public for this article.