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Quaternary shelf sea palaeoceanography: recent developments in Europe

机译:第四纪陆架古海洋学:欧洲的最新发展

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High-quality palaeoceanographic reconstructions based on sequences preserved in shallow marine environments demonstrate that these constitute significant archives of climatic and oceanographic change. Such sequences are important, first, because their often very high-resolution, sometimes laminated, nature enables high-frequency cycles to be resolved and provides the basis for establishing spatial and temporal variability in the marine radiocarbon reservoir effect. Second, sea-level index points from shelves are important for the validation of glacio-hydro-isostatic geophysical models and for understanding sea-level change during early deglaciation. Third, shallow marine sequences contain excellent records of land-ocean interaction, often preserving paired terrestrial-marine proxies in the same stratigraphic sequence. A new development in shelf sea palaeoceanography is documenting the long-term dynamics of shelf sea stratification. This is the dominant hydrodynamic phenomenon of tide-dominated shelf seas in the middle and high latitudes and has a profound influence on productivity and therefore global change through the carbon cycle. Detailing the evolution of seasonal stratification during eustatic highstands is therefore of relevance to the climate system.
机译:基于浅海环境中保存的序列的高质量古海洋学重建表明,这些构成了气候和海洋学变化的重要档案。首先,这些序列很重要,因为它们通常具有很高的分辨率,有时是叠层的,因此能够解决高频循环,并为建立海洋放射性碳储层效应的时空变化提供了基础。其次,来自架子的海平面索引点对于验证冰川-水等静压地球物理模型和理解早期冰消期间的海平面变化非常重要。第三,浅海序列含有极好的陆地-海洋相互作用记录,通常在同一地层​​序列中保留成对的陆-海代理。货架海古海洋学的一项新进展正在记录货架海分层的长期动态。这是中高纬度地区以潮汐为主的架子海的主要水动力现象,并且对生产力以及碳循环中的全球变化具有深远的影响。因此,详细描述高潮期高地季节季节分层的演变与气候系统有关。

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