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September 16, 2025GeologosOpen Access

Mapping the geological fault zone that triggered the Mw 6.1 Pasaman earthquake in Indonesia on the basis of gravity anomalies

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Authors

MYMuhammad YanisRARiski AnandaMAMuhammad Ridha Adhari

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Overview

Research maps fault structure using gravity anomalies and satellite data in the Pasaman region, suggesting risks associated with the Great Sumatran Fault.

Key Points

  • Mapping revealed significant gravity anomalies, indicating the presence of fault segments in the Pasaman region.
  • Residual anomalies between 50–80 mGal highlight fault structures near the confluence of three fault segments.
  • Application of vertical and horizontal derivatives produced high anomalies of up to 0.1 mGal/m, clarifying the fault structure.
  • The study showcases the effectiveness of using Topex satellite and global gravity models in challenging terrains.

Cite This Study

Yanis et al. (2025) studied this question.

synapsesocial.com/papers/68d44f7b31b076d99fa56d74https://doi.org/10.14746/logos.2025.31.2.12
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Also Consider

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  1. 1New ultrahigh‐resolution picture of Earth's gravity field2013 · 314 citations
  2. 2Subsurface structural mapping from high-resolution gravity data using advanced processing methods2021 · 33 citations
  3. 3Neotectonics of the Sumatran fault, Indonesia2000 · 726 citations