Observational constraints on models of the Hawaiian Hot Spot Swell
Observational constraints on models of the Hawaiian Hot Spot Swell
复制标题
夏威夷热点涌浪模型的观测限制
DOI：
10.1029/93jb01230
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发表时间：
1993
影响因子：
--
通讯作者：
P. Wessel
中科院分区：
文献类型：
--
作者：
P. Wessel
对与夏威夷-皇帝海山链有关的地形和大地水准面进行的详细分析表明，虽然该海山链东南部的大地水准面/地形比率很高，但随着远离当前热点位置而下降。在海山链与默里和莫洛凯断裂带的交叉点附近，隆起的地形表现有两个最大值。大地水准面和地形在与默里断裂带相交处的向西迅速减小。看来，太平洋板块在两个断裂带之间的区域比沿着断裂链的其他地方更容易受到再加热和热点穿透的影响。或者，所观察到的模式可以指示夏威夷热点的强度的时间变化。
A detailed analysis of the topography and geoid associated with the Hawaii-Emperor seamount chain reveals that while geoid/topography ratios are high over the southeastern part of the chain, they fall off with distance away from the current hot spot location. The topographic expression of the swell has two maxima near the intersections between the seamount chain and the Murray and Molokai fracture zones, respectively. Both geoid and topography rapidly decrease westward of the intersection with the Murray fracture zone. It appears that the region of the Pacific plate between the two fracture zones has been more susceptible to reheating and hot spot penetration than elsewhere along the chain. Alternatively, the observed pattern may be indicative of time variation in the strength of the Hawaiian hot spot.