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Hernández PA, Notsu K, Salazar JM, et al. Carbon dioxide degassing by advective flow from Usu volcano, Japan. Science. 2001;292(5514):83-6doi: 10.1126/science.1058450.
Hernández, P. A., Notsu, K., Salazar, J. M., Mori, T., Natale, G., Okada, H., Virgili, G., Shimoike, Y., Sato, M., & Pérez, N. M. (2001). Carbon dioxide degassing by advective flow from Usu volcano, Japan. Science (New York, N.Y.), 292(5514), 83-6. https://doi.org/10.1126/science.1058450
Hernández, P A, et al. "Carbon dioxide degassing by advective flow from Usu volcano, Japan." Science (New York, N.Y.) vol. 292,5514 (2001): 83-6. doi: https://doi.org/10.1126/science.1058450
Hernández PA, Notsu K, Salazar JM, Mori T, Natale G, Okada H, Virgili G, Shimoike Y, Sato M, Pérez NM. Carbon dioxide degassing by advective flow from Usu volcano, Japan. Science. 2001 Apr 06;292(5514):83-6. doi: 10.1126/science.1058450. PMID: 11292867.
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Science. 2001 Apr 06;292(5514):83-6. doi: 10.1126/science.1058450.

Carbon dioxide degassing by advective flow from Usu volcano, Japan.

Science (New York, N.Y.)

P A Hernández, K Notsu, J M Salazar, T Mori, G Natale, H Okada, G Virgili, Y Shimoike, M Sato, N M Pérez

Affiliations

  1. Laboratory for Earthquake Chemistry, Graduate School of Science, University of Tokyo, Bunkyo-Ku 113-0033, Tokyo, Japan. [email protected]

PMID: 11292867 DOI: 10.1126/science.1058450

Abstract

Magmatic carbon dioxide (CO2) degassing has been documented before the 31 March 2000 eruption of Usu volcano, Hokkaido, Japan. Six months before the eruption, an increase in CO2 flux was detected on the summit caldera, from 120 (September 1998) to 340 metric tons per day (September 1999), followed by a sudden decrease to 39 metric tons per day in June 2000, 3 months after the eruption. The change in CO2 flux and seismic observations suggests that before the eruption, advective processes controlled gas migration toward the surface. The decrease in flux after the eruption at the summit caldera could be due to a rapid release of CO2 during the eruption from ascending dacitic dikes spreading away from the magma chamber beneath the caldera.

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