| 引用本文: | 成星,臧婧杰,王亚琴,李彦祯,马乐,谭亮成.2024.过去30 ka全球石笋氧同位素数据报告[J].地球环境学报,(6):847-856 |
| CHENG Xing,ZANG Jing jie,WANG Yaqin,LI Yanzhen,MA Le,TAN Liangcheng.2024.Global speleothem oxygen isotope data report in the past 30 ka[J].Journal of Earth Environment,(6):847-856 |
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| 摘要: |
| 持续恶化的全球变暖将会给气候变化敏感地区带来重大损失，极端气候事件发生的风险将进一步加剧。古气候研究的开展给全球增温背景下的气候变化预测提供了重要的窗口，定年精准的石笋是晚第四纪重要的古气候研究材料。迄今为止，包括中国在内的全球石笋古气候科学家在陆地岩溶洞穴区域进行了大量高精度高分辨率的石笋古气候研究。末次盛冰期以来作为包含冰期、冰消期和当代间冰期（全新世）的重要时段，对重建过去气候和预估未来气候系统变化规律具有重要意义。为全面梳理全球末次盛冰期以来的石笋研究成果，收集汇编了264条过去30 ka全球石笋氧同位素记录，旨在建立过去30 ka全球不同区域的降水同位素数据集（以.xlsx格式存储）。目前仅报道当前已发表或公开数据库中已有的30 ka以来石笋氧同位素数据收集情况，对石笋氧同位素数据依据年代控制、分辨率、指标意义进行a、b、c等级划分。未来将在此等级划分标准下，使用优质的石笋氧同位素数据，结合数据同化、数值模拟，开展轨道-千年尺度的气候动力学和降水同位素机制研究。 |
| 关键词: 全球 石笋氧同位素 数据集 30 ka 时间尺度 |
| DOI：10.7515/JEE243010 |
| CSTR：32259.14.JEE243010 |
| 分类号: |
| 基金项目:崂山实验室科技创新项目（LSKJ202203300）；国家自然科学基金项目（42323705）；黄土与第四纪地质国家重点实验室开放基金（SKLLQG2209） |
| 英文基金项目:Science and Technology Innovation Project of Laoshan Laboratory (LSKJ202203300); National Natural Science Foundation of China (42323705); Open Fund of State Key Laboratory of Loess and Quaternary Geology (SKLLQG2209) |
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| Global speleothem oxygen isotope data report in the past 30 ka |
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CHENG Xing1, 2, ZANG Jing jie1, WANG Yaqin1, 3, LI Yanzhen1, 3, MA Le1, TAN Liangcheng1, 4*
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1. State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710061, China
2. Shaanxi Experimental Center of Geological Survey, Shaanxi Institute of Geological Survey, Xi’an 710065, China
3. Xi’an Institute for Innovative Earth Environment Research, Xi’an 710061, China
4. Laoshan Laboratory, Qingdao 266237, China
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| Abstract: |
| As global warming continues to intensify, it will cause significant loss for climate sensitive regions, escalating the risk of extreme climate events. Advancements in paleoclimatology provide a crucial perspective for climate change prediction in the context of global warming. Speleothems, which can be precisely dated, are vital materials for paleoclimatic research in the Late Quaternary. To date, stalagmite paleoclimate scientists from all over the world, including those in China, have conducted numerous high-precision high-resolution studies on stalagmites in terrestrial karst cave regions. Studying the Last Glacial Maximum, encompassing glaciation, deglaciation, and the contemporary interglacial period (Holocene), is pivotal for reconstructing past climates and forecasting future climate systems. In this report, we have collected 264 speleothem oxygen isotope records on a global scale, with the aim of establishing a global precipitation oxygen isotope database spanning the past 30 ka. We have analyzed the distribution and mean resolution of the data across regions and categorized the data according to chronology, time span, resolution, and proxy indicators. We have summarized records of stalagmites from the Holocene and identified some patterns. Moving forward, we will conduct a detailed study of the glacial-interglacial and Holocene records in different regions globally, discussing climate variability and driving mechanisms across various timescales and climatic contexts. |
| Key words: global region speleothem oxygen isotope dataset 30 ka time scales |
