thumbnail

Monitoring a supervolcano in repose: Heat and volatile flux at the yellostone caldera

Elements

By:
,
DOI: 10.2113/GSELEMENTS.4.1.35

Links

Abstract

Although giant calderas ("supervolcanoes") may slumber for tens of thousands of years between eruptions, their abundant earthquakes and crustal deformation reveal the potential for future upheaval. Any eventual supereruption could devastate global human populations, so these systems must be carefully scrutinized. Insight into dormant but restless calderas can be gained by monitoring their output of heat and gas. At Yellowstone, the large thermal and CO2 fluxes require massive input of basaltic magma, which continues to invade the lower to mid-crust, sustains the overlying high-silica magma reservoir, and may result in volcanic hazard for millennia to come. The high flux of CO2 may contribute to the measured deformation of the caldera floor and can also modify the pressure, thermal, and chemical signals emitted from the magma. In order to recognize precursors to eruption, we must scrutinize the varied signals emerging from restless calderas with the goal of discriminating magmatic, hydrothermal, and hybrid phenomena.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Monitoring a supervolcano in repose: Heat and volatile flux at the yellostone caldera
Series title:
Elements
DOI:
10.2113/GSELEMENTS.4.1.35
Volume
4
Issue:
1
Year Published:
2008
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
35
Last page:
40
Number of Pages:
6