Alluvial fans, landslides and Late Quaternary climatic change in the wet tropics of northeast Queensland
Alluvial fans, landslides and Late Quaternary climatic change in the wet tropics of northeast Queensland
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DOI：
10.1046/j.1440-0952.2001.00906.x
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发表时间：
2001-12
影响因子：
1.2
通讯作者：
J. Nott;M. Thomas;D. Price
中科院分区：
文献类型：
--
作者：
J. Nott;M. Thomas;D. Price
广泛的冲积扇和泥石流沉积沿昆士兰东北部潮湿热带的东澳大利亚高地陡坡底部分布。发光和放射性碳测年表明，这些沉积物积累在27ka到14ka之间，这是上一次完整冰川旋回中气候最干燥的阶段。气候干燥和植被覆盖减少，以及持续不断的离散高强度降雨事件，是这一阶段斜坡不稳定加剧的主要原因。滑坡活动和冲积扇发育在整个全新世都在继续，但可能是由于整个区域气候的改善和森林的重建，程度和规模可能较小。
Extensive alluvial‐fan and debris‐flow deposits occur along the base of the escarpment of the east Australian highlands in the wet tropics of northeast Queensland. Luminescence and radiocarbon dating show that these deposits accumulated between 27 ka and 14 ka, which was the driest phase of climate during the last full glacial cycle. Climatic desiccation and reduced plant cover, along with a continuation of discrete high‐magnitude rainfall events, were the principle causes of this phase of enhanced slope instability. Landslide activity and alluvial‐fan development have continued throughout the Holocene, but probably to a lesser extent and magnitude because of the amelioration of climate and the re‐establishment of forests throughout the region.