Pore Fluid as Paleoceanographic Proxy: Reconstructing the Temperature and 0 18 O of the Glacial Ocean

孔隙流体作为古海洋学代理：重建冰川海洋的温度和 0 18 O

• 批准号: 9617860
• 负责人: Daniel Schrag
• 金额: --
• 依托单位: Princeton University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-02-15 至 1998-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9617860&HistoricalAwards=false
• 关键词: Pore; Fluid; Paleoceanographic; Proxy; Reconstructing

9617860 Schrag Previous work by the PI has shown that vertical profiles of the oxygen isotope ratio in sediment porewaters reflect past changes in ocean bottom water and can be used to separated the effects of water composition and temperature upon isotopic signatures in marine carbonates. Preliminary results suggest that bottom waters and tropical sea surface temperatures during the last glacial period were significantly colder than at present. The project will analyze oxygen and hydrogen isotopes and C1 in sediment porewaters from a global array sites to confirm the preliminary findings and test for regional differences. Porewater diffusion models will be developed further, and some initial attempts will be made at applying the results to ocean circulation models.

小行星9617860 PI先前的工作表明，沉积物孔隙水中氧同位素比的垂直剖面反映了海洋底层水过去的变化，可用于分离海水组成和温度对海洋碳酸盐同位素特征的影响。初步结果表明，末次冰期的底层沃茨和热带海面温度比现在低得多。该项目将分析来自全球阵列站点的沉积物孔隙水中的氧和氢同位素以及C1，以确认初步发现并测试区域差异。将进一步发展孔隙水扩散模式，并将初步尝试将结果应用于海洋环流模式。