Late Pleistocene sea level variations derived from the Argentine Shelf
Late Pleistocene sea level variations derived from the Argentine Shelf
复制标题
阿根廷陆架晚更新世海平面变化
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
W. Peltier
中科院分区：
文献类型：
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作者：
T. Guilderson;L. Burckle;S. Hemming;W. Peltier
来自阿根廷陆架的浅海沿岸海洋沉积物提供了晚更新世海平面变化的记录。被解释为反映末次冰期最大低水位的沉积物位于比现在低约150米的地方。使用简单的Airy均衡模型进行流体均衡补偿和对一个小构造分量的校正，在末次盛冰期产生了局部海平面上升下降~ 105 m。除冰期海平面曲线记录了两次快速海平面上升，与巴巴多斯珊瑚海平面曲线记录的MWP1‐A和1‐B相一致。与ICE4G VM2粘弹性模式预测的相对海平面变化比较，突出了该模式预测该地区海平面历史的不足。面对气候变化引起的海平面扰动，有必要对晚更新世海平面变化进行详细的数据模型比较，以确定处理岩石圈粘度和准确预测未来海平面的区域和/或系统偏差。
Neritic‐littoral marine sedimentary deposits from the Argentine Shelf provide a record of late Pleistocene sea level variation. Sediments interpreted to reflect the last glacial maximum low‐stand are ∼150 m below present. Using a simple Airy isostatic model for hydroisostatic compensation and correcting for a minor tectonic component yields a local eustatic sea level lowering of ∼105 m at the last glacial maximum. The deglacial sea level curve records two rapid sea level rises consistent with MWP1‐A and 1‐B as documented by the Barbados coral‐based sea level curve. Comparison with relative sea level variations predicted by the ICE4G VM2 viscoelastic model have highlighted a deficiency in the model's predicted sea level history for this region. Detailed data‐model comparisons of late Pleistocene sea level variations are necessary in the face of climate change induced sea level perturbations to determine regional and or systematic biases in the treatment of lithosphere viscosity and accurate predictions of future sea level.