| 固原硝口温泉CO2气体异常与映震效应 |
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| 引用本文： | 司学芸,李英,姚琳. 固原硝口温泉CO2气体异常与映震效应[J]. 地震地磁观测与研究, 2011, 32(3): 88-94. DOI: 10.3969/j.issn.1003-3246.2011.03.015 |
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| 作者姓名： | 司学芸 李英 姚琳 |
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| 作者单位： | 中国银川750001 宁夏回族自治区地震局 |
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| 基金项目： | 2009年度中国地震局震情跟踪合同制定向式作任务 |
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| 摘 要： | 对2008年固原硝口CO2气体测值异常和整体变化的不稳定因素进行分析,从气温、降雨、仪器和人为因素等方面排除干扰,认为2008年汶川8.0级地震前后出现的短期异常真实可靠.对距今18年的观测资料进行异常统计,发现18次异常中有6次较好对应周围Ms≥4.9地震.结果发现,该测项短期异常具有短期趋势性下降一转折上升和多次单...
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| 关 键 词： | 固原硝口 CO2气体 汶川地震 异常判定标准 |
Reflecting earthquake effectivity of the CO2 anomalies at Xiaokou hot spring in Guyuan county |
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| Si Xueyun,Li Ying,Yao Lin. Reflecting earthquake effectivity of the CO2 anomalies at Xiaokou hot spring in Guyuan county[J]. Seismological and Geomagnetic Observation and Research, 2011, 32(3): 88-94. DOI: 10.3969/j.issn.1003-3246.2011.03.015 |
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| Authors: | Si Xueyun Li Ying Yao Lin |
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| Affiliation: | (Earthquake Administration of Ningzia Hui Autonomous Region, Yinchuan 750001, China) |
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| Abstract: | The earthquakes and the CO2 anomalies observed at Xiaokou hot spring in Guyuan county, Ningxia Hui Autonomous Region, Northwestern China were correlated by systematically an- alyzing the data of COt concentration, atmospheric temperature, precipitation and exploita tion of the hot spring water. The data of CO2 concentrations of hot spring gas measured daily for 18 years showed 15 obvious anomalies. Six of the anomalies may be related to the earth- quake of Ms≥4. 9, which indicated that statistically, 40% of the observed CO2 anomalies might be caused by seismic activity. The anomaly occurred from 22 December 2007 to 22 May 2008 was well corresponding to the Wenchuan earthquake on 12 May 2008. The criteria for identifying the CO2 anomaly related to earthquake were proposed to be ＂transition from increase to decrease and multiple pulses＂. |
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| Keywords: | CO2 gas Wenchuan earthquake Xiaokou hot spring anomaly criteria |
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