| 書(shū)目名稱 | Use of Proxies in Paleoceanography | | 副標(biāo)題 | Examples from the So | | 編輯 | Gerhard Fischer,Gerold Wefer | | 視頻video | http://file.papertrans.cn/945/944446/944446.mp4 | | 概述 | Compilation of most important palaeoceanographic data Combination of palaeoceanographic and palaeoclimatological results.Includes supplementary material: | | 圖書(shū)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 | | 關(guān)鍵詞 | Atlantic Ocean; Climate Change; Klima?nderung; 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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