Dynamic coupling of volcanic CO2 flow and wind at the HorseshoeLake tree kill, Mammoth Mountain, CA
Journal Article
·
· Geophysical Research Letters
OSTI ID:913159
We investigate spatio-temporal relationships between soilCO2 flux (FCO2), meteorological variables, and topography over a ten-dayperiod (09/12/2006 to 09/21/2006) at the Horseshoe Lake tree kill,Mammoth Mountain, CA. Total CO2 discharge varied from 16 to 52 t d-1,suggesting a decline in CO2 emissions over decadal timescales. Weobserved systematic changes in FCO2 in space and time in association witha weather front with relatively high wind speeds from the west and lowatmospheric pressures. The largest FCO2 changes were observed inrelatively high elevation areas. The variations in FCO2 may be due todynamic coupling of wind-driven airflow through the subsurface and flowof source CO2 at depth. Our results highlight the influence of weatherfronts on volcanic gas flow in the near-surface environment and how thisinfluence can vary spatially within a study area.
- Research Organization:
- Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
- Sponsoring Organization:
- USDOE, Sponsored Project Office Contract LB06002281; ZeroEmissions Research and Technology/Japan, Ministry of Economy Trade andIndustry/Japan
- DOE Contract Number:
- AC02-05CH11231
- OSTI ID:
- 913159
- Report Number(s):
- LBNL--62375; BnR: 600301020
- Journal Information:
- Geophysical Research Letters, Journal Name: Geophysical Research Letters Journal Issue: L03401 Vol. 34; ISSN GPRLAJ; ISSN 0094-8276
- Country of Publication:
- United States
- Language:
- English
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