发表机构
Technical University of Munich; Kathmandu Institute of Complex Flows（慕尼黑工业大学; 加德满都复杂流动研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文提出一个精确解析模型，证明侵蚀速率单独不足以决定滑坡运动性，需结合体积膨胀率、侵蚀阻力及流动深度，以解释侵蚀性滑坡运动性的增强或减弱。
AI 中文摘要
侵蚀诱发的滑坡运动性是自然界中的一个显著现象。然而，尽管侵蚀极大地改变了滑坡力学、动力学、滑程、运动性、沉积结构以及此类灾难性事件所携带的巨大破坏力的几乎各个方面，这一课题仍鲜为人知。在此，我提出了一个简单、优雅且精确的解析模型，用以描述侵蚀诱发滑坡运动性的运动学，该模型基于一个新构建的运动性控制器，其中包含了侵蚀中的基本强迫机制。与经典观点相反，我正式证明，无论侵蚀速率多大，仅凭侵蚀速率不足以确定运动性的增强或减弱；运动性还受到体积膨胀速率、侵蚀阻力或推力以及流动深度的极大调控。借助这一力学运动性控制器，现在可以精确解释可侵蚀滑坡的运动性何时增强或减弱。我证明，一个力学上有效、物理上有依据的侵蚀模型必须能够解释侵蚀性滑坡运动性的增强和减弱两种情况。
英文摘要
Erosion-induced landslide mobility is a prominent phenomenon in nature. However, this topic remains poorly understood, even though erosion greatly alters nearly every aspect of landslide mechanics, dynamics, run-out, mobility, deposition structure and the enormous destructive power carried by such catastrophic events. Here, I present a simple, elegant, and exact analytical model describing the kinematics of erosion-induced landslide mobility in terms of a newly constructed mobility controller containing essential forcing mechanisms in erosion. In contrast to the classical perspective, I formally prove that, irrespective of how large the erosion rate is, the erosion rate alone is not sufficient to determine enhanced or reduced mobility; mobility is also greatly regulated by the volume bulking rate, erosion drag or thrust, and flow depth. With this mechanical mobility controller, it is now possible to explain precisely when the mobility of an erodible landslide is enhanced or reduced. I demonstrate that, a mechanically valid, physically founded erosion model must be able to explain both the enhanced and reduced mobility of erosive landslides.
