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首页> 外文期刊>Pure and Applied Geophysics >Seismo-geochemical variations in SW Taiwan: Multi-parameter automatic gas monitoring results
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Seismo-geochemical variations in SW Taiwan: Multi-parameter automatic gas monitoring results

机译：台湾西南部的地震地球化学变化：多参数自动气体监测结果

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摘要

Gas variations of many mud volcanoes and hot springs distributed along the tectonic sutures in southwestern Taiwan are considered to be sensitive to the earthquake activity. Therefore, a multi-parameter automatic gas station was built on the bank of one of the largest mud-pools at an active fault zone of southwestern Taiwan, for continuous monitoring of CO2, CH4, N-2 and H2O, the major constituents of its bubbling gases. During the year round monitoring from October 2001 to October 2002, the gas composition, especially, CH4 and CO2, of the mud pool showed significant variations. Taking the CO2/CH4 ratio as the main indicator, anomalous variations can be recognized from a few days to a few weeks before earthquakes and correlated well with those with a local magnitude > 4.0 and local intensities > 2. It is concluded that the gas composition in the area is sensitive to the local crustal stress/strain and is worthy to conduct real-time monitoring for the seismo-geochemical precursors.
机译：台湾西南部沿构造缝合线分布的许多泥火山和温泉的气体变化被认为对地震活动敏感。因此，在台湾西南部活动断裂带最大的泥池之一的岸上建立了一个多参数自动加油站，以连续监测其主要成分CO2，CH4，N-2和H2O。冒泡的气体。在2001年10月至2002年10月的全年监测中，泥浆中的气体成分（尤其是CH4和CO2）显示出显着变化。以CO2 / CH4比为主要指标，可以在地震发生前几天到几周内识别出异常变化，并与局部强度> 4.0和局部强度> 2的异常有很好的相关性。该地区对地壳应力/应变敏感，值得对地震地球化学前兆进行实时监测。

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