汶川地震相关的断裂带含碳气体排放量估算  

Estimate of C-bearing Gas Emissions from the Fault Associated with Wenchuan Earthquake

作　　者：崔月菊[1] 杜建国[1] 李新艳[2] 孙凤霞[1] 邹镇宇[1] 

机构地区：[1]中国地震局地震预测重点实验室(地震预测研究所),北京100036 [2]宁夏回族自治区地震局,银川750001

出　　处：《矿物岩石地球化学通报》2017年第2期222-227,共6页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：国家自然科学基金项目(41403099);中国地震局定向跟踪工作任务(2017010302);中国地震局地震预测研究所基本科研业务费专项(2016IES010103)

摘　　要：断裂带是地下气体向上运移的有利通道,地震活动会加剧地下气体沿断裂带向上运移,释放到大气中。本文利用卫星高光谱遥感技术,初步估算了汶川地震伴随的大范围含碳气体(CH_4、CO和CO_2)的排放变化总量。结果显示,龙门山断裂带长期不断地向大气中排放大量的含碳气体,汶川地震的发生导致在短时间里龙门山断裂带向大气中至少多排放了4740t CO、8549t CH_4和87.15 Mt CO_2。地震活动造成的断裂带含碳气体排放不可忽视,是地质碳排放的重要组成部分,对大气环境效应有重要影响。Fault is the favorable channel for the underground gas migrating upward. The underground gas migrated into the atmosphere along the fault enhanced by the seismic activities. The total variable quantities of C-bearing gases（ CH4, CO and CO2 ）accompanied with Wenchuan earthquake were estimated preliminarily using the technology of satellite hyperspectral remote sensing in this paper. The results showed that large amounts of C-bearing gases emitted constantly from the Longmen- shan fault into the atmosphere for a long time; At least 4740 t CO, 8549 t CH4 and 87. 15 Mt CO2 were more emitted from Longmenshan fault into the atmosphere compared with the background caused by the occurrence of Wenchuan earthquake during a short period. The C-bearing gas emissions from the fault resulted by the seismic activities are the important parts of geologic C-emission, which cannot be ignored and have an important effect on the atmospheric environment study.

关 键 词：CH4 CO CO2 断裂带排气 地震 

分 类 号：P315[天文地球—地震学]