Natural CH4 gas seeps in the French Alps: characteristics, typology and contribution to CH4 natural emissions to the atmosphere

被引：4

作者：

Gal, Frederick ^{[1
]}

Kloppmann, Wolfram ^{[1
]}

Proust, Eric ^{[1
]}

Bentivegna, Gaetan ^{[1
]}

Defossez, Pierrick ^{[1
]}

Mayer, Bernhard ^{[2
]}

Gaucher, Eric C. ^{[3
]}

机构：

[1] Bur Rech Geol & Minieres, 3 Ave Claude Guillemin, F-45060 Orleans, France

[2] Univ Calgary, Dept Geosci, 2500 Univ Dr NW, Calgary, AB T2N 1N4, Canada

[3] CSTJF, TOTAL, Ave Larribau, F-64018 Pau, France

来源：

13TH INTERNATIONAL CONFERENCE ON GREENHOUSE GAS CONTROL TECHNOLOGIES, GHGT-13 | 2017年 / 114卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Greenhouse gases emissions; soil gas monitoring; flux quantification; CO2; CH4; thermogenic gases; gas seep; ANALOG;

D O I：

10.1016/j.egypro.2017.03.1430

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Two CH4-rich (> 80% vol.) gas seeps situated in the French Alps have been characterized in order to get a detailed overview of the gas phases and their spatial variability. Albeit set in similar geological settings, the Le Gua and Rochasson gas seeps present some differences in C2H6 or CO2 contents. Gas fluxes emitted into the atmosphere suggest that few hundreds of kg of CH4 are emitted each day from the seep area of Le Gua together with tens of kg of CO2. Emissions at Rochasson are one order of magnitude lower and only consist in CH4 venting. Site monitoring techniques and strategies are discussed. (C) 2017 The Authors. Published by Elsevier Ltd.

引用

页码：3020 / 3032

页数：13

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