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<p>Earthquake-induced landslides (EILs) pose a significant threat to the tectonically active Himalayan region of Nepal and increase the potential for cascading hazards. Despite recurrent earthquakes, including the catastrophic 2015 Gorkha event, research on EILs in Nepal has remained fragmented and largely event-driven, leaving critical gaps in long-term understanding and risk management. This bibliometric review examines recent research trends and knowledge gaps from 2014 to 2025, based on a PRISMA-compliant systematic search of the Dimensions AI database, which identified 130 peer-reviewed articles for rigorous screening. The inventories, susceptibility mapping, and remote sensing (RS) developments drive us to plot publications in VOSviewer, the visualization tool, and R (bibliometric), the statistical tool, to identify the dramatic rise in publications on the Gorkha earthquake of 2015 (reaching 16 in 2017). The United States has the greatest scientific impact, with 433 citations. In contrast, strong collaborative networks have emerged among Nepal, China, and the USA, fostering methodological innovation in machine learning (ML) ensembles, InSAR monitoring, and multi-hazard assessments. However, the analysis has persistent limitations: research remains heavily concentrated on short-term post-event inventories in central Nepal, with insufficient attention given to long-term hillslope recovery, climate-seismicity interactions, volume-runout dynamics, ecological restoration, and western regions affected by recent events such as the 2023 Jajarkot earthquake. By providing a comprehensive taxonomy and critical evaluation of existing approaches, this review offers both theoretical contributions to understanding post-disaster research dynamics and practical guidance for evidence-based disaster risk reduction. However, longitudinal, interdisciplinary, and policy-driven research is essential for enhancing disaster resilience in the Himalayan landscapes of Nepal, which are prone to disasters.</p>

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Research trends and knowledge gaps in earthquake-induced landslides in Nepal: a bibliometric review

  • 期刊论文

  • 发表日期：

    2026年7月20日

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  • Birendra Kumar Bohara,
  • Janardan Joshi,
  • Toran Prasad Bhatt,
  • Kishan Datta Bhatta,
  • Deepak Raj Bhatta,
  • Nayan Singh Saud

摘要

Earthquake-induced landslides (EILs) pose a significant threat to the tectonically active Himalayan region of Nepal and increase the potential for cascading hazards. Despite recurrent earthquakes, including the catastrophic 2015 Gorkha event, research on EILs in Nepal has remained fragmented and largely event-driven, leaving critical gaps in long-term understanding and risk management. This bibliometric review examines recent research trends and knowledge gaps from 2014 to 2025, based on a PRISMA-compliant systematic search of the Dimensions AI database, which identified 130 peer-reviewed articles for rigorous screening. The inventories, susceptibility mapping, and remote sensing (RS) developments drive us to plot publications in VOSviewer, the visualization tool, and R (bibliometric), the statistical tool, to identify the dramatic rise in publications on the Gorkha earthquake of 2015 (reaching 16 in 2017). The United States has the greatest scientific impact, with 433 citations. In contrast, strong collaborative networks have emerged among Nepal, China, and the USA, fostering methodological innovation in machine learning (ML) ensembles, InSAR monitoring, and multi-hazard assessments. However, the analysis has persistent limitations: research remains heavily concentrated on short-term post-event inventories in central Nepal, with insufficient attention given to long-term hillslope recovery, climate-seismicity interactions, volume-runout dynamics, ecological restoration, and western regions affected by recent events such as the 2023 Jajarkot earthquake. By providing a comprehensive taxonomy and critical evaluation of existing approaches, this review offers both theoretical contributions to understanding post-disaster research dynamics and practical guidance for evidence-based disaster risk reduction. However, longitudinal, interdisciplinary, and policy-driven research is essential for enhancing disaster resilience in the Himalayan landscapes of Nepal, which are prone to disasters.