Calibration of the U (37) (K') index of long-chain alkenones with the in-situ water temperature in Lake Qinghai in the Tibetan Plateau | |
Wang, Z (Wang Zheng)[ 1 ]; Liu, WG (Liu WeiGuo)[ 1,2 ] | |
2013-03-30 | |
发表期刊 | CHINESE SCIENCE BULLETIN |
卷号 | 58期号:7页码:803-808 |
文章类型 | 期刊论文 |
摘要 | Long-chain alkenones (LCAs) can potentially be used as indicators to understand past variations in lacustrine environments. Previous research has suggested that the relationship between the temperature and the unsaturation index of LCAs should be calibrated individually, because of the possible variations in the alkenone-producing algal species in the lacustrine environment. In this work, we have calibrated U (37) (K') of water filter samples against the in-situ water temperature in Lake Qinghai, Tibetan Plateau. There are significant relationships between U (37) (K') and the water temperature, a non-linear relationship was derived. Because the U (37) (K') values did not respond sensitively at lower temperatures, we suggested that a quadratic regression (U (37) (K') =0.0011xT (2)-0.0201xT+0.1959, n=15, r (2)=0.74) was appropriate than linear regression to represent the relationship between the in-situ temperatures and U (37) (K') . Meanwhile, the U (37) (K) correlation relationship was not more significant than U (37) (K') index in our study. Because of the C-37:4 effects by salinity change, we suggest U (37) (K) is not as robust as the U (37) (K') index as a temperature proxy, at least for the salt lake in the Tibetan Plateau. The calibration of the U (37) (K') index in this work has provided a new understanding of historic climatic changes in the Tibetan Plateau. |
关键词 | U37index In-situ Temperature Lake Qinghai |
DOI | 10.1007/s11434-012-5527-y |
收录类别 | SCI |
语种 | 英语 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/10012 |
专题 | 加速器质谱中心 |
通讯作者 | Wang, Z (Wang Zheng)[ 1 ] |
作者单位 | 1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China; 2.School of Human Settlement and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China |
推荐引用方式 GB/T 7714 | Wang, Z ,Liu, WG . Calibration of the U (37) (K') index of long-chain alkenones with the in-situ water temperature in Lake Qinghai in the Tibetan Plateau[J]. CHINESE SCIENCE BULLETIN,2013,58(7):803-808. |
APA | Wang, Z ,&Liu, WG .(2013).Calibration of the U (37) (K') index of long-chain alkenones with the in-situ water temperature in Lake Qinghai in the Tibetan Plateau.CHINESE SCIENCE BULLETIN,58(7),803-808. |
MLA | Wang, Z ,et al."Calibration of the U (37) (K') index of long-chain alkenones with the in-situ water temperature in Lake Qinghai in the Tibetan Plateau".CHINESE SCIENCE BULLETIN 58.7(2013):803-808. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Calibration of the U(626KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 请求全文 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论