巨型滑坡的活动性和动力学

摘要：

大型滑坡的罕见性减少了观测次数，阻碍了对这些现象的理解。在这里，我们使用了径流距离来确定数千年前在大溪地北部形成的大型滑坡沉积物是由单一事件还是多个事件造成的。使用模型来量化这一事件的动力学表明，一个单一的事件或少数事件（n<10）是负责任的，最大滑动速度很高（>125米/秒）在部分海底条件下。这样的潜艇传播有利于一个较慢的动态，但更长的跳动。海底条件下的有效基底摩擦力范围为0.2 < $μ$ < 0.3。

英文摘要：

The rarity of large landslides reduces the number of observations and hinders the understanding of these phenomena. Runout distance was used here to determine whether the large landslide deposit formed several thousand years ago in northern Tahiti was caused by a single or multiple events. Using modelling to quantify the dynamics of this event suggested that a single event or a small number of events (n<10) were responsible, and that the maximum slide velocity was high (>125 m/s) under partially submarine conditions. Such submarine propagation favoured a slower dynamic but a longer runout. The effective basal friction under submarine conditions ranged from 0.2 < $μ$ < 0.3.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。