Earthquakes can initiate slow-moving landslides and cause them to transition into rapid failures. Although observations are limited, the literature suggests that strong earthquakes are more likely to trigger nearby failures, while smaller earthquakes may increase susceptibility. However, understanding the role of seismic disturbances requires considering other environmental conditions. This study focuses on the 2008 Mw 7.9 Wenchuan earthquake, using a data-driven multivariate approach to analyze slow-moving landslides. Our findings highlight topographic relief, road proximity, river distance, average monthly precipitation, lithology, and distance to the earthquake surface rupture as key factors. While the distance to the surface rupture is inversely related to landslide occurrence, it is the least influential variable, suggesting that most slow-moving landslides near the rupture may not have failed during the earthquake. Our finding also suggests that persistent disturbances from road networks may be as significant as the impact of a strong earthquake in influencing the existence of slow-moving landslides.

中文翻译：

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缓慢移动的滑坡的地震和环境控制：来自 2008 年汶川地震的见解


地震会引发缓慢移动的山体滑坡，并导致它们转变为快速崩塌。尽管观测结果有限，但文献表明，强地震更有可能触发附近的故障，而较小的地震可能会增加敏感性。然而，要了解地震干扰的作用，需要考虑其他环境条件。本研究以 2008 年 Mw 7.9 汶川地震为重点，采用数据驱动的多元方法分析缓慢移动的滑坡。我们的研究结果强调了地形起伏、道路接近度、河流距离、月平均降水量、岩性和到地震表面破裂的距离是关键因素。虽然到地表破裂的距离与滑坡的发生成反比，但它是影响最小的变量，这表明破裂附近大多数移动缓慢的滑坡可能在地震期间没有失败。我们的研究结果还表明，来自道路网络的持续干扰在影响缓慢移动的滑坡存在方面可能与强烈地震的影响一样重要。