Waves, coastal boulder deposits and the importance of the pre-transport setting
Waves, coastal boulder deposits and the importance of the pre-transport setting
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DOI：
10.1016/s0012-821x(03)00104-3
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发表时间：
2003-05-15
影响因子：
5.3
通讯作者：
Nott, J
中科院分区：
文献类型：
--
作者：
Nott, J
沿海巨石的运输前环境以及它的形状、大小和密度决定了它运输所需的波浪高度。不同的作用力作用在水下巨石上，而不是水下巨石被海浪击中时。与其他环境中的巨石相比，来自岸上平台上节理边界块体的巨石主要受到提升力，需要更高的波浪才能运输。没有一个公式可以用来确定沉积一块覆盖着海岸巨石的田野或山脊的古波浪的高度。文中给出了一系列的方程及其推导，这些方程可适用于不同的块石预运输环境。在试图重建过去沿海海浪灾害的频率和强度以及区分海啸和风暴波沉积的巨石场时，这种方法是必要的。(C)2003 Elsevier Science B.V.保留所有权利。
The pre-transport environment of a coastal boulder along with its shape, size and density determines the height of wave required for it to be transported. Different forces act on sub-aerial boulders as opposed to submerged boulders when struck by a wave. Boulders derived from joint bounded blocks on shore platforms predominantly experience lift force and require a wave of greater height to be transported than boulders in other environments. No one equation is applicable to determine the height of palaeo-waves responsible for depositing a field or ridge of imbricated coastal boulders. A range of equations and their derivation is presented here which can be applied to the respective pretransport environment of a boulder. Such an approach is necessary when attempting to reconstruct the frequency and magnitude of past coastal wave hazards and for differentiating between tsunami and storm wave deposited boulder fields. (C) 2003 Elsevier Science B.V. All rights reserved.