Transient Warm Climates and Delta13C Anomalies during the Early Danian

大年早期的短暂温暖气候和 Delta13C 异常

• 批准号: 0244264
• 负责人: Richard Norris
• 金额: $ 14.48万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-01 至 2005-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0244264&HistoricalAwards=false
• 关键词: Transient; Warm; Climates; Delta13C; Anomalies

This project will investigate apparent rapid changes in global temperature in the early Danian. The study will use isotopic analyses of planktic and benthic foraminifers and carbonate content measurements in several high-accumulation rate deep sea cores to determine the geographic extent and magnitude of a rapid cooling event in the early Danian that appears to be related to the Chicxulub impact event and a following warm event termed the Dan C-2 event that is associated with a large change in carbon isotope values. The study will focus on records from DSDP 465A and ODP 1049.

该项目将调查大年早期全球气温的明显快速变化。 该研究将利用浮游和底栖有孔虫的同位素分析以及几个高积累率深海岩心的碳酸盐含量测量来确定丹尼早期快速冷却事件的地理范围和强度，该事件似乎与希克苏鲁伯撞击事件和随后的称为丹C-2事件的温暖事件有关，该事件与碳同位素值的大幅变化有关。 该研究将重点关注 DSDP 465A 和 ODP 1049 中的记录。