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地震 ›› 2020, Vol. 40 ›› Issue (1): 99-111.doi: 10.12196/j.issn.1000-3274.2020.01.008

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探测与2014年新疆于田MS7.3地震相关的大气CO和O3异常变化

刘海博1,2, 崔月菊2, 辛存林1   

  1. 1.西北师范大学地理与环境科学学院, 兰州 730070;
    2.中国地震局地震预测研究所, 北京 100036
  • 收稿日期:2019-05-23 出版日期:2020-01-31 发布日期:2020-01-20
  • 通讯作者: 辛存林, 教授。E-mail: xincunling@163.com
  • 作者简介:刘海博(1994-), 男, 甘肃宁县人, 硕士研究生, 主要从事矿产勘查与地质环境研究。
  • 基金资助:
    国家重点研发计划课题(2018YFC1503602); 国家自然科学基金青年基金项目(41403099)

Detecting Anomalies of Atmospheric Total Column CO and O3 Related to the 2014 Yutian MS7.3 Earthquake

LIU Hai-bo1,2, CUI Yue-ju2, XIN Cun-lin1   

  1. 1.College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, China;
    2.Institute of Earthquake Science, China Earthquake Administration, Beijing 100036, China
  • Received:2019-05-23 Online:2020-01-31 Published:2020-01-20

摘要: 基于AQUA AIRS传感器提取了2014年2月12日新疆于田MS7.3地震前后CO和O3数据, 讨论了数据变化与地震活动的关系。 差值法和异常指数法结果表明, 于田地震后CO和O3在3月份达到最大异常, 且气体柱浓度异常沿NE向发震构造呈线性分布; 不同高度的CO和O3的VMR值变化与差值法和异常指数法得到的结果相吻合; 地震前后短时间内CO和O3气体柱浓度出现下降, 且地震当月最低。 初步推断可能是阿尔金断裂尾部在SW向运动过程中使得震区断裂带在弹性挤压状态下出现闭锁, 气体不流通导致; CO和O3异常更多的可能是由于田地震引起地下气体大量释放, 其次可能是与地下气体逸散在大气圈中发生的一系列化学反应有关。 研究表明, 卫星高光谱遥感数据获得的CO和O3的地球化学信息与地震有密切联系, 在地震监测及预测领域具有重要的应用价值。

关键词: AIRS, CO, O3, 2014年于田MS7.3地震

Abstract: The data of CO and O3 before and after the MS7.3 earthquake of Yutian in Xinjiang on February 12, 2014 was extracted based on the AQUA AIRS sensor, and the relationship between data changes and seismic activity was discussed. The results of difference value method and anomaly index method showed that there are CO and O3 reached the maximum anomaly in March after the earthquake, and the anomalous distribution of gas total column and seismogenic structure showed a linear NE distribution. The change in VMR values for CO and O3 at different heights is consistent with this result. The CO and O3 total column decreased in a short time before and after the earthquake, and the gas total column was the lowest in the month of the earthquake. The preliminary conclusion may be that the tail of the Altun fault caused the blockage of the earthquake zone to be locked under elastic compression during the movement of the SW, and the gas did not flow. The CO and O3 anomalies are more due to the large release of underground gas caused by the Yutian earthquake, and secondly may be related to a series of chemical reactions in which the underground gas escapes in the atmosphere. The results indicate that geochemical information of CO and O3 obtained by satellite hyperspectral remote sensing can be connected with earthquake, indicating potential application in monitoring and forecasting earthquake.

Key words: AIRS, carbon monoxide, ozone, earthquake, Yutian

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