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  1. 防災科研関係論文

Dynamics of diffuse carbon dioxide emissions from Cumbre Vieja volcano, La Palma, Canary Islands

https://nied-repo.bosai.go.jp/records/4169
https://nied-repo.bosai.go.jp/records/4169
64791c2a-f985-4dd3-8d41-95c163916ae9
Item type researchmap(1)
公開日 2023-03-30
タイトル
言語 en
タイトル Dynamics of diffuse carbon dioxide emissions from Cumbre Vieja volcano, La Palma, Canary Islands
言語
言語 eng
著者 Eleazar Padron

× Eleazar Padron

en Eleazar Padron

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Nemesio M. Perez

× Nemesio M. Perez

en Nemesio M. Perez

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Fatima Rodriguez

× Fatima Rodriguez

en Fatima Rodriguez

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Gladys Melian

× Gladys Melian

en Gladys Melian

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Pedro A. Hernandez

× Pedro A. Hernandez

en Pedro A. Hernandez

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Hirochika Sumino

× Hirochika Sumino

en Hirochika Sumino

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German Padilla

× German Padilla

en German Padilla

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Jose Barrancos

× Jose Barrancos

en Jose Barrancos

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Samara Dionis

× Samara Dionis

en Samara Dionis

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Kenji Notsu

× Kenji Notsu

en Kenji Notsu

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David Calvo

× David Calvo

en David Calvo

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抄録
内容記述タイプ Other
内容記述 We report herein the results of 13 soil CO2 efflux surveys at Cumbre Vieja volcano, La Palma Island, the most active basaltic volcano in the Canary Islands. The CO2 efflux measurements were undertaken using the accumulation chamber method between 2001 and 2013 to constrain the total CO2 output from the studied area and to evaluate occasional CO2 efflux surveys as a volcanic surveillance tool for Cumbre Vieja. Soil CO2 efflux values ranged from non-detectable up to 2442 gm(-2) days(-1), with the highest values observed in the south, where the last volcanic eruption took place (Teneguia, 1971). Isotopic analyses of soil gas carbon dioxide suggest an organic origin as the main contribution to the CO2 efflux, with a very small magmatic gas component observed at the southern part of the volcano. Total biogenic and magmatic combined CO2 emission rates showed a high temporal variability, ranging between 320 and 1544 t days(-1) and averaging 1147 t days(-1) over the 220-km(2) region. Two significant increases in the CO2 emission observed in 2011 and 2013 were likely caused by an enhanced magmatic endogenous contribution revealed by significant changes in the He-3/He-4 ratio in a CO2-rich cold spring. The relatively stable emission rate presented in this work defines the background CO2 emission range for Cumbre Vieja during a volcanic quiescence period.
言語 en
書誌情報 en : BULLETIN OF VOLCANOLOGY

巻 77, 号 4, p. 28
出版者
言語 en
出版者 SPRINGER
ISSN
収録物識別子タイプ EISSN
収録物識別子 1432-0819
DOI
関連識別子 10.1007/s00445-015-0914-2
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