Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 7-Day Trial for You or Your Team.

Learn More →

Surge in sulphur and halogen degassing from Ambrym volcano, Vanuatu

Surge in sulphur and halogen degassing from Ambrym volcano, Vanuatu Volcanoes provide important contributions to atmospheric budgets of SO2 and reactive halogens, which play significant roles in atmospheric oxidative capacity and radiation. However, the global source strengths of volcanic emissions remain poorly constrained. These uncertainties are highlighted here by the first measurements of gas emission rates from Ambrym volcano, Vanuatu. Our initial airborne ultraviolet spectroscopic measurements made in January 2005 indicate fluxes of 18–270 kg s-1 of SO2, and 62–110 g s-1 of BrO, into the atmosphere, placing Ambrym amongst the largest known contemporary point sources of both these species on Earth. We also estimate high Cl and F fluxes of ~8–14 and ~27–50 kg s-1, respectively, for this period. Further observations using both airborne and spaceborne remote sensing reveal a fluctuating SO2 output between 2004 and 2008, with a surge in the first half of 2005, and underline the substantial contribution that a single passively degassing volcano can make to the atmospheric budget of sulfur and halogens. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Bulletin of Volcanology Springer Journals

Surge in sulphur and halogen degassing from Ambrym volcano, Vanuatu

Download PDF
10 pages

Loading next page...
 
/lp/springer-journals/surge-in-sulphur-and-halogen-degassing-from-ambrym-volcano-vanuatu-FLP34L73U7

References (41)

Publisher
Springer Journals
Copyright
Copyright © 2009 by Springer-Verlag
Subject
Earth Sciences; Sedimentology ; Mineralogy ; Geophysics/Geodesy ; Geology
ISSN
0258-8900
eISSN
1432-0819
DOI
10.1007/s00445-009-0293-7
Publisher site
See Article on Publisher Site

Abstract

Volcanoes provide important contributions to atmospheric budgets of SO2 and reactive halogens, which play significant roles in atmospheric oxidative capacity and radiation. However, the global source strengths of volcanic emissions remain poorly constrained. These uncertainties are highlighted here by the first measurements of gas emission rates from Ambrym volcano, Vanuatu. Our initial airborne ultraviolet spectroscopic measurements made in January 2005 indicate fluxes of 18–270 kg s-1 of SO2, and 62–110 g s-1 of BrO, into the atmosphere, placing Ambrym amongst the largest known contemporary point sources of both these species on Earth. We also estimate high Cl and F fluxes of ~8–14 and ~27–50 kg s-1, respectively, for this period. Further observations using both airborne and spaceborne remote sensing reveal a fluctuating SO2 output between 2004 and 2008, with a surge in the first half of 2005, and underline the substantial contribution that a single passively degassing volcano can make to the atmospheric budget of sulfur and halogens.

Journal

Bulletin of Volcanology – Springer Journals

Published: May 26, 2009

There are no references for this article.