1978年9月16日(伊朗东部)Tabas-e-Golshan地震断层参数,基于宏观地震观测,带测年地点以改进数据集

IF 1.6 4区 地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS
H. Amini
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引用次数: 0

摘要

估计地震的位置、震级和断层走向等宏观地震参数有助于编制地震目录,特别是对历史地震或参数估计精度较低的地震目录。本研究旨在利用Tabas地震(1978.09.16)的描述——宏观地震数据点(MDPs)来估计其宏观地震参数。mdp包括地震对建筑物破坏的影响和受地震影响的每个地点的环境影响的任何描述。Tabas地震的宏观地震数据来源于不同的文献。因此,该数据集用于估计本次地震的宏观地震参数:宏观地震位置、震级、烈度和震源参数。估计震源方位与NNW-SSE方向的Tabas断裂系统一致,震源走向、长度和宽度分别为166.8°、55.8±7.5 km和18.2±1.4 km。此外,对于未来的研究,建议在Khosro Abad附近的地点,靠近这次地震的大地震震中,进行下一个实地研究,采样与过去证据相关的沉积物并确定它们的年代。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Fault parameters of the Tabas-e-Golshan earthquake, September 16, 1978 (eastern Iran), based on macroseismic observations, with locations for dating to improve the dataset

Fault parameters of the Tabas-e-Golshan earthquake, September 16, 1978 (eastern Iran), based on macroseismic observations, with locations for dating to improve the dataset

Estimating the macroseismic parameters of earthquakes such as location, magnitude, and fault orientation can be helpful to complete the earthquake catalogs, especially on historical ones or the ones whose parameters were estimated with low accuracy. This study aims to estimate the macroseismic parameters of Tabas earthquake (1978.09.16) using its reported descriptions, Macroseismic Data Points (MDPs). MDPs include any descriptions of earthquake effects on building damages and environmental effects of each location affected by the earthquake. Macroseismic dataset of Tabas earthquake is collected from different documents. Thus, this dataset is used to estimate the macroseismic parameters of this earthquake: macroseismic location, magnitude, intensity, and source parameters. Results estimate the macroseismic epicenter of this earthquake at 33.49°N–56.94°E with the moment magnitude, Mw, 7.1 and the maximum macroseismic intensity value XI in both EMS and ESI intensity scales. Its estimated source orientation is consistent to Tabas fault system in the direction NNW-SSE with the strike, length, and width value of the source in 166.8°, 55.8 ± 7.5 km, and 18.2 ± 1.4 km, respectively. Moreover, for future studies, the locations near Khosro Abad, close to the macroseismic epicenter of this earthquake, are suggested for the next field studies, sampling the sediments related to the past evidences and dating them.

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来源期刊
Journal of Seismology
Journal of Seismology 地学-地球化学与地球物理
CiteScore
3.30
自引率
6.20%
发文量
67
审稿时长
3 months
期刊介绍: Journal of Seismology is an international journal specialising in all observational and theoretical aspects related to earthquake occurrence. Research topics may cover: seismotectonics, seismicity, historical seismicity, seismic source physics, strong ground motion studies, seismic hazard or risk, engineering seismology, physics of fault systems, triggered and induced seismicity, mining seismology, volcano seismology, earthquake prediction, structural investigations ranging from local to regional and global studies with a particular focus on passive experiments.
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