The Open UniversitySkip to content

Volcanic eruption prediction: Magma chamber physics from gravity and deformation measurements

Rymer, Hazel and Williams-Jones, Glyn (2000). Volcanic eruption prediction: Magma chamber physics from gravity and deformation measurements. Geophysical Research Letters, 27(16) pp. 2389–2392.

Full text available as:
PDF (Not Set) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (408kB)
DOI (Digital Object Identifier) Link:
Google Scholar: Look up in Google Scholar


One of the greatest remaining problems in modern volcanology is the process by which volcanic eruptions are triggered. It is generally accepted that eruptions are preceded by magma intrusion [Sigurdsson and Sparks, 1978]. The degree of interaction between previously ponded magma in a chamber and newly intruded magma determines the nature and rate of eruption and also the chemistry of erupted lavas and shallow dykes. Here, we investigate the physics of this interaction. Volcano monitoring at its most effective is a synergy between basic science and risk assessment, while hazard mitigation depends on reliable interpretation of eruption precursors. The simple and much used Mogi model relates ground deformation (?h) to changes in magma chamber volume. Gravity changes (?g) combined with ground deformation provide information on magma chamber mass changes. Our new models predict how the ?g/?h gradient will evolve as a volcano develops from a state of dormancy through unrest into a state of explosive activity. Thus by simultaneous measurement of deformation and gravity at a few key stations, magma chamber processes can be identified prior to the onset of conventional eruption precursors.

Item Type: Journal Item
ISSN: 0094-8276
Keywords: Volcanology; volcano
Academic Unit/School: Other Departments > Other Departments
Other Departments
Item ID: 61
Depositing User: Users 12 not found.
Date Deposited: 30 May 2006
Last Modified: 21 Mar 2019 01:29
Share this page:


Altmetrics from Altmetric

Citations from Dimensions

Download history for this item

These details should be considered as only a guide to the number of downloads performed manually. Algorithmic methods have been applied in an attempt to remove automated downloads from the displayed statistics but no guarantee can be made as to the accuracy of the figures.

Actions (login may be required)

Policies | Disclaimer

© The Open University   contact the OU