| 书目名称 | Use of Proxies in Paleoceanography | | 副标题 | Examples from the So | | 编辑 | Gerhard Fischer,Gerold Wefer | | 视频video | | | 概述 | Compilation of most important palaeoceanographic data Combination of palaeoceanographic and palaeoclimatological results.Includes supplementary material: | | 图书封面 |  | | 描述 | Paleoceanographic proxies provide infonnation for reconstructions of the past, including climate changes, global and regional oceanography, and the cycles of biochemical components in the ocean. These prox ies are measurable descriptors for desired but unobservable environmental variables such as tempera ture, salinity, primary productivity, nutrient content, or surface-water carbon dioxide concentrations. The proxies are employed in a manner analogous to oceanographic methods. The water masses are first characterized according to their specific physical and chemical properties, and then related to particular assemblages of certain organisms or to particular element or isotope distributions. We have a long-standing series of proven proxies available. Marine microfossil assemblages, for instance, are employed to reconstruct surface-water temperatures. The calcareous shells of planktonic and benthic microorgan isms contain a wealth of paleoceanographic information in their isotopic and elemental compositions. Stable oxygen isotope measurements are used to detennine ice volume, and MglCa ratios are related to water temperatures, to cite a few examples. Organic material may also pro | | 出版日期 | Book 1999 | | 关键词 | Atlantic Ocean; Climate Change; Klimaänderung; Ocean; Oceanography; Orbit; Pangaea; Proxies; Southern Ocean; | | 版次 | 1 | | doi | https://doi.org/10.1007/978-3-642-58646-0 | | isbn_softcover | 978-3-642-63681-3 | | isbn_ebook | 978-3-642-58646-0 | | copyright | Springer-Verlag Berlin Heidelberg 1999 |
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发表于 2025-3-21 16:22:14
