SEISMOTECTONIC AND PALEOSEISMIC STUDIES FROM SPELEOTHEMS: THE STATE OF THE ART
SEISMOTECTONIC AND PALEOSEISMIC STUDIES FROM SPELEOTHEMS: THE STATE OF THE ART
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作者：
P. Forti
洞穴可能记录地震的想法相当古老，但直到 1950 年之后才开始对此主题进行系统研究。目前，人们普遍认为喀斯特洞穴（尤其是石笋）可以用作构造和地震分析的工具。本文概述了使用自然破碎的洞穴和/或仍在生长的石笋进行地震构造和古地震分析的最新技术。具体而言，它们在以下方面可能很重要： 1- 过去地震的位置和震中； 2- 他们的相对和绝对年代（在过去 50 万年左右）； 3- 这些地震的震级； 4-改进地震危险性评估。
The idea that speleothems may record earthquakes is rather old, but it was only after 1950 that systematic studies started on this topic. Presently it's well accepted that karst speleothems (especially stalagmites) can be used as a tool for tectonic and seismic analysis. In the present paper an overview on the state of the art in the seismotectonic and paleoseismic analyses using naturally broken speleothems and/or still growing stalagmites is presented. Specifically they may be important with respect to: 1- location and epicentre of past earthquakes; 2- their relative and absolute dating (within the last 500,000 yr. or so); 3- magnitude of these earthquakes; 4- improvement in the seismic hazard evaluation.