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Abstract <p>Based on seismic energy, earthquake density, and Morishita index data, a map of Priamurye seismic lineaments that can serve as rupture indicators has been constructed. The identified seismic lineaments have been compared with the known faults identified based on geological data and indirect signs of hidden faults: linear magnetic and gravity anomalies, <i>V</i><sub>p</sub>/<i>V</i><sub>s</sub> velocity ratios, and lineaments based on relief analysis. Of the 33 constructed seismic lineaments, 23 (13 regional and 10 local ruptures) are consistent in individual segments with known geological faults, while 10 do not correlate with known faults. At the same time, six seismic lineaments from the last group have other indirect signs of faults typical of hidden modern active faults. The identified seismic lineaments have different orientations without predominant directions. No significant differences were found in the manifestation of seismic lineaments constructed based on the analysis of weak and fairly strong earthquakes.</p>

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Seismic Lineaments of the Priamurye Region and Their Relationship with Fault Tectonics

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • S. A. Tusikova,
  • T. V. Merkulova

摘要

Abstract

Based on seismic energy, earthquake density, and Morishita index data, a map of Priamurye seismic lineaments that can serve as rupture indicators has been constructed. The identified seismic lineaments have been compared with the known faults identified based on geological data and indirect signs of hidden faults: linear magnetic and gravity anomalies, Vp/Vs velocity ratios, and lineaments based on relief analysis. Of the 33 constructed seismic lineaments, 23 (13 regional and 10 local ruptures) are consistent in individual segments with known geological faults, while 10 do not correlate with known faults. At the same time, six seismic lineaments from the last group have other indirect signs of faults typical of hidden modern active faults. The identified seismic lineaments have different orientations without predominant directions. No significant differences were found in the manifestation of seismic lineaments constructed based on the analysis of weak and fairly strong earthquakes.