A consistent global approach for the morphometric characterization of subaqueous landslides
A consistent global approach for the morphometric characterization of subaqueous landslides
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DOI：
10.1144/sp477.15
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发表时间：
2019-01-01
期刊：
影响因子：
--
通讯作者：
Jobe, Zane
中科院分区：
文献类型：
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作者：
Clare, Michael;Chaytor, Jason;Jobe, Zane
从湖泊和沿海环境到深海，山体滑坡在世界各地的水上环境中都很常见。快速移动的大体积山体滑坡可能会引发破坏性的海啸。山体滑坡破坏和扰乱了全球通信连接和其他重要的海洋基础设施。滑坡沉积物是局部但重要的深海生物群落的焦点。在埋藏条件下，滑坡沉积对油气系统的成功起着重要作用。虽然了解水下滑坡过程的广泛重要性是显而易见的，但一些重要的科学问题尚未得到必要的关注。收集定量数据是解决围绕水下滑坡问题的关键一步。水下滑坡的定量指标是常规记录的，但哪些量化指标以及如何定义，取决于最终用户的关注点。侧重点的不同会阻碍社区之间的知识交流，并使比较分析复杂化。这项研究概述了一种专门用于水下滑坡形态测量的一致性测量的方法，该方法将用于设计一个更广泛的、全球开源的、同行管理的数据库。来自不同环境的例子说明了如何应用该方法，以及在分析不同滑坡和数据类型时遇到的困难。水下滑坡数据收集的标准化应该会导致更准确的地质灾害预测和资源估计。
Landslides are common in aquatic settings worldwide, from lakes and coastal environments to the deep sea. Fast-moving, large-volume landslides can potentially trigger destructive tsunamis. Landslides damage and disrupt global communication links and other critical marine infrastructure. Landslide deposits act as foci for localized, but important, deep-seafloor biological communities. Under burial, landslide deposits play an important role in a successful petroleum system. While the broad importance of understanding subaqueous landslide processes is evident, a number of important scientific questions have yet to receive the needed attention. Collecting quantitative data is a critical step to addressing questions surrounding subaqueous landslides.Quantitative metrics of subaqueous landslides are routinely recorded, but which ones, and how they are defined, depends on the end-user focus. Differences in focus can inhibit communication of knowledge between communities, and complicate comparative analysis. This study outlines an approach specifically for consistent measurement of subaqueous landslide morphometrics to be used in the design of a broader, global open-source, peer-curated database. Examples from different settings illustrate how the approach can be applied, as well as the difficulties encountered when analysing different landslides and data types. Standardizing data collection for subaqueous landslides should result in more accurate geohazard predictions and resource estimation.