Participation in IODP Expedition 397 (Iberian Paleoclimate)

参加IODP第397次探险（伊比利亚古气候）

• 批准号: NE/X002101/1
• 负责人: David Hodell
• 金额: $ 10.44万
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FX002101%2F1
• 关键词: Participation; IODP; Expedition; 397; Iberian

IODP Expedition 397 will take place on the SW Iberian margin off Portugal later this year (06 Oct - 06 Dec 2022) where rapidly accumulating sediments preserve a high-fidelity record of past climate change. This proposal requests funding (travel and salary) for Prof. D. Hodell to participate in IODP Expedition 397 (Iberian Paleoclimate) as co-chief scientist and for postcruise research during the sample moratorium period following the expedition. Cores from all holes at two of the proposed sites (SHACK-04C and -11B) will be analyzed by core scanning X-ray fluorescence (XRF) at 1 cm spatial resolution. This is a non-destructive method that semi-quantitatively estimates elemental ratios of sediment composition from the split core surface. These data will be used to accurately correlate from hole-to-hole and construct a composite spliced section that is needed to ensure a complete stratigraphic section. We will also produce a low-resolution oxygen isotope record and construct and orbitally-tuned age model so scientists working on these sites can place their data into a robust stratigraphic and chronologic framework. The proposed research will further the overall objective of Expedition 397 which is to provide present and future generations of paleoceanographers with the raw material needed to reconstruct the North Atlantic climate at high temporal resolution for the last 5 million years.

IODP 397 号探险将于今年晚些时候（2022 年 10 月 6 日至 12 月 6 日）在葡萄牙附近的伊比利亚西南部边缘进行，那里快速积累的沉积物保存了过去气候变化的高保真记录。该提案要求为 D. Hodell 教授提供资金（差旅费和工资），以作为联合首席科学家参加 IODP 397 号探险（伊比利亚古气候），并在探险结束后的样本暂停期内进行巡航后研究。两个拟建地点（SHACK-04C 和 -11B）所有孔洞的岩心将通过 1 厘米空间分辨率的岩心扫描 X 射线荧光 (XRF) 进行分析。这是一种非破坏性方法，可半定量估计分裂岩心表面沉积物成分的元素比率。这些数据将用于准确地逐孔关联并构建确保完整地层剖面所需的复合拼接剖面。我们还将生成低分辨率氧同位素记录，并构建和轨道调整的年龄模型，以便在这些地点工作的科学家可以将他们的数据放入强大的地层和年代框架中。拟议的研究将进一步推进 397 号探险队的总体目标，即为当代和未来几代古海洋学家提供以高时间分辨率重建过去 500 万年北大西洋气候所需的原材料。

项目成果

A 1.5-Million-Year Record of Orbital and Millennial Climate Variability in the North Atlantic

北大西洋 150 万年的轨道和千年气候变化记录

• DOI: http://dx.10.5194/cp-2022-61
• 发表时间: 2022
• 作者: Hodell D

A 1.5-million-year record of orbital and millennial climate variability in the North Atlantic

北大西洋 150 万年的轨道和千年气候变化记录

• DOI: http://dx.10.17863/cam.95076
• 发表时间: 2023
• 作者: Hodell D

Expedition 397 Preliminary Report: Iberian Margin Paleoclimate

397 号探险队初步报告：伊比利亚边缘古气候

• DOI: 10.14379/iodp.pr.397.2023
• 发表时间: 2023-02-06
• 期刊: International Ocean Discovery Program Preliminary Report
• 作者: D. Hodell;F. Abrantes;C.A. Alvarez Zarikian
• 通讯作者: C.A. Alvarez Zarikian