Holocene environmental conditions in the coastal ocean off East Antarctica - evidence from the paleo-diet of snow petrels
南极洲东部沿海海洋的全新世环境条件——来自雪海燕古饮食的证据
基本信息
- 批准号:522373452
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Infrastructure Priority Programmes
- 财政年份:
- 资助国家:德国
- 起止时间:
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
Reconstructions of past environmental conditions in the coastal ocean off East Antarctica are crucial to better understand processes of ocean - ice interaction. For the proposed project, stomach oil deposits of snow petrels (Pagodroma nivea) (Antarctic mumiyo) shall be used as a paleoenvironmental archive of Holocene sea-ice conditions in the coastal zone of the Southern Ocean. A multiproxy approach, combining inorganic, lipid (fatty acids) and isotope (δ13C and δ15N) analyses will be applied to infer past changes in snow petrel diet, which can be linked to environmental conditions in the foraging range of the birds, such as sea ice variability, polynya activity and primary production. The study area comprises a large sector of the East Antarctic coastline, ranging from Wilkes Land (Windmill Islands) to Mac Robertson Land (Framnes Mountains) and is not well-covered by sea-ice records from the coastal zone. At the same time, some outlet glacier systems along this part of the coastline are sensitive to ocean warming, highlighting the need for a better understanding of ocean - ice interaction under changing climatic conditions in these regions. The research questions that will be addressed with this project are, if changes in Holocene sea ice coverage in the coastal zone i) occurred consistently across the East Antarctic margin, ii) were associated with shifts in the position of oceanic fronts, such as the southern boundary of the Antarctic Circumpolar Current and iii) are correlated with the advance/retreat of the ice sheet margin and/or its outlet glacier systems. To extent the existing sample set, sampling of mumiyo deposits in un-glaciated coastal sites (Windmill Islands, Bunger Hills, Gaussberg and Vestfold Hills) is part of the proposed project. Field work will be conducted within the scope of the RV Polarstern expeditions PS140 (EASI 2) and PS141 (EASI 3) that are scheduled back-to-back for the austral summer season 2023/24.
南极东部沿海海洋过去环境状况的重建对于更好地了解海洋冰的过程至关重要。对于拟议的项目,降雪石油矿床(Pagodroma nivea)(南极Mumiyo)应用作南大洋沿海地区全新世海冰条件的古环境档案。将无机,脂质(脂肪酸)和同位素(Δ13C和Δ15N)分析结合在一起的多氧方法将应用于推断雪石油饮食的过去变化,这可以与鸟类觅食范围的环境条件有关,例如海冰变异性,Polynya活性和初级产生。研究区域包括东南极海岸线的大型地区,从威尔克斯(Wilkes Land)(风车群岛)到麦克·罗伯逊(Mac Robertson)土地(弗拉姆尼斯山脉),并且没有沿海地区的海冰记录覆盖。同时,海岸线这一部分的一些出口冰川系统对海洋变暖敏感,强调需要更好地了解海洋 - 在这些地区不断变化的气候条件下的冰相互作用。如果该项目将解决的研究问题是,如果沿海地区全新世海冰覆盖范围的变化始终发生在南极东部的边缘,ii)与海洋阵线位置的转移有关,例如南极圆极圆极电流的南部边界和III的南部边界与冰层的冰层覆盖/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或/或或或或或或可能相关。在现有样品集的范围内,在未冰川沿海地区(风车群岛,Bunger Hills,Gaussberg和Vestfold Hills)中对Mumiyo沉积物进行采样是拟议项目的一部分。现场工作将在RV Polarstern Expeditions PS140(EAI 2)和PS141(EAI 3)的范围内进行,该探险活动定于2023/24澳大利亚夏季季节背靠背。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Dr. Sonja Berg其他文献
Dr. Sonja Berg的其他文献
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{{ truncateString('Dr. Sonja Berg', 18)}}的其他基金
Marine ecosystem response to late Pleistocene climate conditions- evidence from snow petrel stomach oil deposits ("mumiyo") in East Antarctica
海洋生态系统对更新世晚期气候条件的响应——来自东南极洲雪海燕胃油沉积物(“mumiyo”)的证据
- 批准号:
424214250 - 财政年份:2019
- 资助金额:
-- - 项目类别:
Infrastructure Priority Programmes
Snow petrel stomach oil deposits (Antarctic mumiyo) as archives for the environmental history of terrestrial East Antarctica
雪海燕胃油沉积物(南极 mumiyo)作为东南极洲陆地环境历史的档案
- 批准号:
314910053 - 财政年份:2016
- 资助金额:
-- - 项目类别:
Infrastructure Priority Programmes
Compound-specific radiocarbon dating - approaching the problems of dating Antarctic sediments
化合物特异性放射性碳测年——解决南极沉积物测年问题
- 批准号:
257051270 - 财政年份:2014
- 资助金额:
-- - 项目类别:
Infrastructure Priority Programmes
Linking Paleo-Observations with Climate Models in order to understand Holocene environmental variability of coastal East Antartica (HoloAnt)
将古观测与气候模型联系起来,以了解东南极洲沿海的全新世环境变化(HoloAnt)
- 批准号:
197668488 - 财政年份:2011
- 资助金额:
-- - 项目类别:
Infrastructure Priority Programmes
Integrating terrestrial and marine sediment records from East Antarctica to explore late Pleistocene and Holocene ice sheet instability
整合东南极洲的陆地和海洋沉积物记录,探索晚更新世和全新世冰盖的不稳定性
- 批准号:
463250038 - 财政年份:
- 资助金额:
-- - 项目类别:
Infrastructure Priority Programmes
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