准噶尔盆地南缘独山子泥火山温室气体排放通量  

Estimation of greenhouse gas flux from mud volcanoes in the Dushanzi area, southern Junggar Basin of Northwest China

作　　者：马向贤[1] 郑国东[1] 郭正府[2] ETIOPE Giuseppe FORTIN Danielle 佐野有司 

机构地区：[1]甘肃省油气资源研究重点实验室,中国科学院油气资源研究重点实验室,兰州730000 [2]中国科学院地质与地球物理研究所,新生代地质与环境重点实验室,北京100029 [3]Istituto Nazionale di Geofisica e Vulcanologia,Rome 00143,Italy [4]Department of Earth Sciences,The University of Ottawa,Ottawa K1N6N5,Canada [5]Atmosphere and Ocean Research Institute,The University of Tokyo,Kashiwa 131-0044,Japan

出　　处：《科学通报》2014年第32期3190-3196,共7页Chinese Science Bulletin

基　　金：国家自然科学基金(41273112);中国科学院西部行动计划(KZCX2-XB3-03);中国科学院外国专家特聘研究员计划(2010T2Z03,2011T1Z36);甘肃省重点实验室专项(1309RTSA041)资助

摘　　要：泥火山是深部构造作用和地下流体上侵活动在地表的直接表现,向大气圈排放大量以甲烷为主的温室气体,然而对其温室气体排放通量的研究报道却较少.我国新疆独山子泥火山是典型的、且非常活跃的泥火山,正在排放各种温室气体.利用密闭气室连接甲烷探测器方法对排放气体进行原位测量,结合泥火山排放气体的组成特征,估算了研究区泥火山所排放的温室气体通量.结果表明,新疆独山子DSZ-01和DSZ-03等两处泥火山通过宏观渗漏每年向大气排放约161kg的温室气体,DSZ-01泥火山喷口周围314 m2,DSZ-02泥火山喷口周围8400 m2和DSZ-03泥火山喷口周围706 m2等3个区域通过微观渗漏每年向大气排放约16.6 t的温室气体.Mud volcanoes are a direct manifestation of deep tectonic and subsurface fluid invasion activities near the earth surface. Such activity emits large amounts of greenhouse gases, predominantly methane, and is also responsible for an important part of the total geologic carbon flux to the atmosphere. However, there is little research on estimation of greenhouse gas flux from mud volcanoes in China. The mud volcanoes in the Dushanzi area of the Xinjiang Uygur Autonomous Region are typical and very active, emitting various types of greenhouse gases. We used a sealed chamber connected to a methane detector to measure the in situ gas emission rate and estimate flux. Based on well-known research methods, experience with greenhouse gas emissions from mud volcanoes abroad, and gas composition data, we estimated total flux of those gases emitted from the Dushanzi mud volcanoes. Greenhouse gas fluxes from macro-seeps in areas DSZ-01 and DSZ-03 exceeded 161 t/a. Flux by micro-seepage in areas DSZ-01（314 m^2）, DSZ-02（8400 m^2）, and DSZ-03（314 m^2） was 16.6 t/a.

关 键 词：泥火山 温室气体 碳排放 独山子 准噶尔盆地 

分 类 号：P317.3[天文地球—固体地球物理学]