Organic Geochemical Signals of Short-Term Climatic and Environmental Cycles in the California Borderland and Gulf of California

加州边境和加州湾短期气候和环境循环的有机地球化学信号

• 批准号: 8822583
• 负责人: James Ingle
• 金额: $ 11.97万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-05-15 至 1991-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8822583&HistoricalAwards=false
• 关键词: Organic; Geochemical; Signals; Short; Term

Climate changes have an impact on the faunal and floral remains in marine sediments. The variation in the organic chemistry of these sedimentary remains then, can be used as indices of the fauna and flora and the climate in which these organisms lived. This project will examine a large number of samples from the varved sediments of the Santa Barbara and Guaymas Basins for alkenone and dinosterol content. The unsaturation ratio of the alkenones will be used to address temperature fluctuations and the dinosterol content will be used to assess the dinoflagellate bloom conditions associated with El Ninyo (El Nino) events. The samples have been chosen to optimize the expected temporal variations and to insure preservation of the organic signals in varved sediments. This research will provide unique information about the plankton productivity and temperature variations associated with short term El Ninyo events.

气候变化对动物群和花卉产生影响 残留在海洋沉积物中。 有机体的变异 这些沉积遗迹的化学成分， 动物群和植物群的指数和气候，其中这些 有机体活了下来。 该项目将检查大量样本， 圣巴巴拉和瓜伊马斯盆地的纹状沉积物， 烯酮和甾醇含量。 的不饱和度比， 烯酮将用于解决温度波动问题， 甲藻甾醇含量将被用来评估甲藻 与厄尔尼诺（El Nino）事件相关的水华条件。 的 选择样本以优化预期的时间 变化，并确保保存的有机信号， 纹状沉积物 这项研究将提供独特的信息 浮游生物的生产力和温度的变化 与短期厄尔尼诺事件有关。