腾冲青海湖湖泊沉积记录的5000年来地震事件
engchong Qinghai Lake sediments record of earthquake events since 5000a in Yunnan province
云南腾冲位于多条断裂带的交界处,区域内的青海火山湖沉积物较好的记录了区域极端地质事件。本文通过对腾冲青海湖沉积物低频磁化率、高频磁化率和频率磁化率的分析,并结合Bayisian年代-深度模型及过去500年来腾冲地区强烈地震(M≥6.0)的历史资料数据,探讨了腾冲青海湖磁化率指标对区域强烈地震事件的响应和记录。研究结果表明,高频磁化率、低频磁化率和频率磁化率指标对强烈地震事件具有较好的响应,磁化率相关参数的波动与强地震事件具有同步性,在磁化率参数上表现为峰值。根据此变化特征,进一步探讨了5000 a BP以来云南西南部发生的多次强地震事件。研究结果将为研究古地震及其机理提供一定的科学依据。
engchong county is located in Yunnan province, which lies at the intersection of multiple fault zone, The sediments of Qinghai volcanic lake is good recorded the regional extreme geological events in this area. This article according to analysis Tengchong Qinghai lake sediments in low frequency magnetic susceptibility, high frequency magnetic susceptibility and frequency magnetic susceptibility analysis, and combining the Bayisian age - depth model and Tengchong area the history of the strong earthquakes(M ≥6.0) data during the past 500 years, discusses the Tengchong Qinghai lake susceptibility index response and record of regional strong earthquake incident .The research's results show that high frequency magnetic susceptibility and frequency magnetic susceptibility and frequency magnetic susceptibility index has good response on strong earthquake events, the related parameters of magnetic susceptibility of volatility and strong earthquake events have synchronicity, on the parameters of magnetic susceptibility for peak performance.According to the variation characteristics, and further discusses the some strong earthquake events in southwestern Yunnan province since 5000 a BP.The results will be for the study of ancient earthquakes and mechanism to provide certain scientific basis.
张文翔、甘国其、牛洁
地质学地球物理学灾害、灾害防治
腾冲青海火山湖湖泊沉积岩芯古地震磁化率
engchong Qinghai Volcanic LakeLake sediments CorePaleoearthquakesmagnetic susceptibility
张文翔,甘国其,牛洁.腾冲青海湖湖泊沉积记录的5000年来地震事件[EB/OL].(2016-01-11)[2025-08-10].http://www.paper.edu.cn/releasepaper/content/201601-219.点此复制
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