川西温泉水温观测及其在芦山MS7.0 地震前的异常现象

晏锐 关致君 刘耀炜

晏锐, 关致君, 刘耀炜. 2015: 川西温泉水温观测及其在芦山MS7.0 地震前的异常现象. 地震学报, 37(2): 347-356. doi: 10.11939/jass.2015.02.014
引用本文: 晏锐, 关致君, 刘耀炜. 2015: 川西温泉水温观测及其在芦山MS7.0 地震前的异常现象. 地震学报, 37(2): 347-356. doi: 10.11939/jass.2015.02.014
Yan Ru, Guan Zhijun, Liu Yaowei. 2015: Hot spring water observations and its anomalies before the Lushan MS7.0 earthquake in the western Sichuan region. Acta Seismologica Sinica, 37(2): 347-356. doi: 10.11939/jass.2015.02.014
Citation: Yan Ru, Guan Zhijun, Liu Yaowei. 2015: Hot spring water observations and its anomalies before the Lushan MS7.0 earthquake in the western Sichuan region. Acta Seismologica Sinica, 37(2): 347-356. doi: 10.11939/jass.2015.02.014

川西温泉水温观测及其在芦山MS7.0 地震前的异常现象

doi: 10.11939/jass.2015.02.014
基金项目: 国家科技支撑计划项目(2012BAK19B02-03)资助.
详细信息
  • 中图分类号: P314.1

Hot spring water observations and its anomalies before the Lushan MS7.0 earthquake in the western Sichuan region

  • 摘要: 在2013年芦山MS7.0地震震中附近流体观测点进行现场考察的基础上, 本文选择川西地区观测环境较好、 干扰较少的温泉水温观测资料进行回溯性分析. 结果表明, 康定龙头沟和二道桥温泉、 道孚龙普沟温泉、 理塘毛垭温泉、 泸定共和温泉水温在芦山地震前均出现不同程度的异常变化. 其主要表现为, 距离震中较远的理塘毛垭温泉和道孚龙普沟温泉水温在震前2年左右出现中期尺度异常, 距离震中较近的康定龙头沟和二道桥温泉水温在震前3个月内出现短期异常. 通过温泉水化学及δD-δ18O稳定同位素特征分析, 认为这些温泉水具有深循环特征, 能灵敏地反映地壳深部地热及构造变化信息, 是芦山地震前观测到异常的可能原因. 加强对这些温泉点的观测, 对区域地震预测研究具有重要的科学意义和现实意义.

     

  • 图  1  温泉观测异常点与芦山

    Figure  1.  Distribution of hot spring observation sites and the Lushan MS7.0 earthquake epicenter

    图  2  温泉水温观测日值曲线(a)康定二道桥温泉;(b)康定龙头沟温泉;(c)道孚龙普沟温泉;(d)理塘毛垭温泉;(e)泸定共和温泉

    Figure  2.  Observation curves of hot spring water temperature(a)Erdaoqiao hot spring in Kangding region;(b)Longtougou hot spring in Kangding region;(c)Longpugou hot spring in Daofu county;(d)Maoya hot spring in Litang county;(e)Gonghe hot spring in Luding county

    图  3  温泉水δD-δ18O同位素(部分资料来源于李军等(1989Chen等(2014)与西南地区大气降水线对比图(王恒纯,1991)

    Figure  3.  Comparison ofδD-δ18O isotopes of hot spring water(partial data were from Li et al(1989) and Chen et al,2014 and meteoricwaterline in the southwestern China(after Wang,1991)

    表  1  芦山MS7.0地震震中附近温泉异常点观测背景与异常信息

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出版历程
  • 收稿日期:  2014-07-09
  • 修回日期:  2014-11-30
  • 刊出日期:  2015-03-01

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