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首页> 外文期刊>Quaternary Science Reviews: The International Multidisciplinary Review Journal >Turbidite paleoseismology along the active continental margin of Chile - Feasible or not?
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Turbidite paleoseismology along the active continental margin of Chile - Feasible or not?

机译：智利活跃大陆边缘的浊浊古地震学-可行与否？

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摘要

Much progress has been made in estimating recurrence intervals of great and giant subduction earthquakes using terrestrial, lacustrine, and marine paleoseismic archives. Recent detailed records suggest these earthquakes may have variable recurrence periods and magnitudes forming supercycles. Understanding seismic supercycles requires long paleoseismic archives that record timing and magnitude of such events. Turbidite paleoseismic archives may potentially extend past earthquake records to the Pleistocene and can thus complement commonly shorter-term terrestrial archives. However, in order to unambiguously establish recurring seismicity as a trigger mechanism for turbidity currents, synchronous deposition of turbidites in widely spaced, isolated depocenters has to be ascertained. Furthermore, characteristics that predispose a seismically active continental margin to turbidite paleoseismology and the correct sample site selection have to be taken into account.
机译：在利用地面，湖相和海洋古地震资料估算大俯冲地震和大俯冲地震的复发间隔方面，已经取得了很大进展。最近的详细记录表明，这些地震的复发周期和震级可能会变化，形成超循环。要了解地震超级循环，需要长期的古地震档案，以记录此类事件的时间和大小。混浊的古地震资料可能将过去的地震记录扩展到更新世，因此可以补充通常较短期的地面资料。但是，为了明确地将反复发生的地震活动作为浊流的触发机制，必须确定在宽间隔，孤立的沉积中心中浊积的同步沉积。此外，必须考虑使地震活跃的大陆边缘成为浊积岩古地震学的特征和正确的采样地点选择。

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