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<p>On May 24, 2024, a catastrophic landslide struck Yambali Village in Enga Province, Papua New Guinea, drawing international attention. This brief report consolidates limited but essential data to characterize the event. Underlain by quartz sandstone, the landslide originated from a steep peak behind the village, encompassing a source area of approximately 25,000 m<sup>2</sup> and a deposition area of approximately 72,000 m<sup>2</sup>. The region typically receives more than 2000&#xa0;mm of rainfall annually, with precipitation in the past 2&#xa0;years being the highest recorded in the last decade. Additionally, two faults and a minor fold within the landslide zone contributed to the formation of the rear sliding surface, resulting in steep terrain and abundant joint fractures. Preliminary findings suggest that approximately 30 houses were buried, directly affecting close to 200 individuals. Optical imagery prior to the event revealed localized collapses and expanding fractures, indicative of prolonged slope instability. Tectonic forces, sustained heavy rainfall, and steep topographic conditions collectively triggered the Yambali landslide. A seismic station located 480&#xa0;km away recorded the event, and signal analysis indicated that the failure likely occurred at approximately 2:56 AM local time.</p>

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Brief report on the catastrophic landslide in Papua New Guinea on May 24, 2024

  • 期刊论文

  • 发表日期：

    2025年3月22日

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  • Zhigang Li,
  • Weile Li,
  • Qiang Xu,
  • Feng Pu,
  • Wenlong Yu,
  • Yunfeng Shan,
  • Pengyu Guo,
  • Congwei Yu,
  • Shengsen Zhou,
  • Chuanhao Pu,
  • Xiaochen Wang

摘要

On May 24, 2024, a catastrophic landslide struck Yambali Village in Enga Province, Papua New Guinea, drawing international attention. This brief report consolidates limited but essential data to characterize the event. Underlain by quartz sandstone, the landslide originated from a steep peak behind the village, encompassing a source area of approximately 25,000 m2 and a deposition area of approximately 72,000 m2. The region typically receives more than 2000 mm of rainfall annually, with precipitation in the past 2 years being the highest recorded in the last decade. Additionally, two faults and a minor fold within the landslide zone contributed to the formation of the rear sliding surface, resulting in steep terrain and abundant joint fractures. Preliminary findings suggest that approximately 30 houses were buried, directly affecting close to 200 individuals. Optical imagery prior to the event revealed localized collapses and expanding fractures, indicative of prolonged slope instability. Tectonic forces, sustained heavy rainfall, and steep topographic conditions collectively triggered the Yambali landslide. A seismic station located 480 km away recorded the event, and signal analysis indicated that the failure likely occurred at approximately 2:56 AM local time.