As an important indicator for landslide hazard and risk assessments, landslide mobility has attracted considerable attention in the literature, yet few studies have investigated seismic earthflows. Therefore, the earthflows induced by the 2018 Mw 7.5 Palu earthquake (Indonesia) and the 2018 Mw 6.5 Eastern Iburi earthquake (Japan) and their mobility characteristics were analyzed. Long-term irrigation for cultivation of wet rice and heavy rainfall produced by Typhoon Jebi introduced substantial moisture into alluvial fans (Palu earthquake) and pyroclastic fall deposits (Eastern Iburi earthquake), respectively, and seismic shaking liquefied these moist deposits, which consequently traveled long distances. Four earthflows that were triggered on very gentle slopes of 1–3° by the Palu event exhibited very high mobility levels (H/L) of 0.0129, 0.01125, 0.0209 and 0.0271 (average H/L = 0.018), whereas 7058 earthflows triggered by the Eastern Iburi event exhibited an average mobility of 0.33. Different liquefied layers were located below or above the low permeability layer, and movement restrictions and complex final flow disturbances could be responsible for obvious mobility differences triggered by the two seismic events. However, the earthflow mobility induced by the Eastern Iburi earthquake was obviously higher than that of coseismic rock landslides worldwide and is described by the following relationship: H/L = 1.46–0.24 × log₁₀ (earthflow_area). Furthermore, the earthflow area, peak ground acceleration (PGA) and slope angle all have increase influences on mobility.

作为滑坡灾害和风险评估的重要指标，滑坡流动性在文献中引起了相当大的关注，但很少有研究调查地震地流。因此，对2018年Mw 7.5帕卢地震（印度尼西亚）和2018年Mw 6.5东伊武里地震（日本）诱发的泥流及其流动特征进行了分析。长期灌溉湿稻种植和台风飞燕产生的强降雨分别给冲积扇（帕卢地震）和火山碎屑沉积物（伊布里东部地震）带来了大量水分，地震震动液化了这些潮湿的沉积物，因此它们移动了很长时间距离。帕卢事件在 1-3° 的非常平缓的斜坡上触发的四次地球流表现出非常高的流动性水平 (H/L)，分别为 0.0129、0.01125、0。0209 和 0.0271（平均 H/L = 0.018），而东部 Iburi 事件引发的 7058 流的平均流动性为 0.33。不同的液化层位于低渗透层的下方或上方，运动限制和复杂的最终流动扰动可能是导致两次地震事件引发的明显流动性差异的原因。然而，东伊布里地震引起的地流流动性明显高于世界范围内的同震岩石滑坡，并用以下关系描述：运动限制和复杂的最终流动扰动可能是由两个地震事件引发的明显流动性差异的原因。然而，东伊布里地震引起的地流流动性明显高于世界范围内的同震岩石滑坡，并用以下关系描述：运动限制和复杂的最终流动扰动可能是由两个地震事件引发的明显流动性差异的原因。然而，东伊布里地震引起的地流流动性明显高于世界范围内的同震岩石滑坡，并用以下关系描述：H/L  = 1.46–0.24 × log ₁₀ ( earthflow_area )。此外，土流面积、峰值地面加速度（PGA）和坡角都对流动性有增加的影响。