Recent research on landslide dams - a literature review with special attention to New Zealand
Recent research on landslide dams - a literature review with special attention to New Zealand
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DOI：
10.1191/0309133302pp333ra
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发表时间：
2002-06
期刊：
影响因子：
--
通讯作者：
O. Korup
中科院分区：
文献类型：
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作者：
O. Korup
自Costa和Schuster的基准论文发表以来已经过去了十多年（Costa，J.E.和Schuster，R.L. 1988年：天然大坝的形成和破坏。美国地质学会通报100，1054-68）的形成和天然大坝的失败。这篇综述对国际和新西兰滑坡坝研究的最新趋势和发展进行了批判性的审视。由于大规模迁移造成的临时或永久性河流阻塞通常发生在陡峭的地形中，随着高地地区人口和土地使用压力的增加，这一问题逐渐受到更多的关注和认识。不同的方法，其相关性和工程和缓解措施的应用潜力进行审查，并概述了几个缺点，以期对未来可能的研究方向。以前关于滑坡坝的工作大部分是描述性的，并产生了大量有记录的案例研究。最近为纠正这一平衡所作的努力包括建立全球和全国性的滑坡坝数据库（清单），在预测、定量和基于地理信息系统的建模方面取得进展。此外，对重建以前的河流阻塞及其时空分布模式的解释方法一直在进行，这可能有助于评估目前和未来的地貌灾害。这种评估以及山区的一般管理战略都必须依赖从大量案例中有效提取的关键数据。进一步的工作包括考虑时间和永久性滑坡触发流蓄水在第四纪景观演变，量化的沉积物预算和古环境重建。总体而言，仍然有相当缺乏了解的地貌形式和过程涉及滑坡坝的形成，稳定性和故障，其中一部分是固有的往往是短暂的性质，流阻塞耦合山坡山谷系统。
More than a decade has passed since the publication of the benchmark paper of Costa and Schuster (Costa, J.E. and Schuster, R.L. 1988: The formation and failure of natural dams. Geological Society of America Bulletin 100, 1054-68) on the formation and failure of natural dams. This review takes a critical look at recent trends and developments in international and New Zealand-based research on landslide dams. Temporary or permanent stream blockages by mass movements commonly occur in steep terrain, and gradually receive more attention and awareness with increasing population and land use pressure in upland regions. Different approaches in methodology and their relevance and application potential for engineering and mitigative measures are reviewed and several shortcomings outlined, with a view towards possible future research directions. A high percentage of previous work on landslide dams has been mainly descriptive in character, and has produced a multitude of documented case studies. Recent attempts to redress the balance have included the establishment of global and nationwide databases (inventories) of landslide dams, progress in predictive, quantitative and GIS-based modelling. Furthermore, interpretative approaches towards the reconstruction of former stream blockages and their spatio-temporal distribution patterns have been pursued, which may assist assessments of present and future geomorphic hazards. Both such appraisals as well as management strategies in mountainous regions in general, will have to rely on key data efficiently extracted from a plethora of case examples. Further work includes consideration of temporal and permanent landslide-triggered stream impoundments within Quaternary landscape evolution, quantification of sediment budgets and palaeoenvironmental reconstruction. Overall, there is still a considerable lack of understanding of geomorphic forms and processes involved with landslide-dam formation, stability and failure, part of which is inherent in the often ephemeral nature of stream blockages in coupled hillslope-valley systems.