Journal cover Journal topic
Climate of the Past An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

IF value: 3.536
IF3.536
IF 5-year value: 3.967
IF 5-year
3.967
CiteScore value: 6.6
CiteScore
6.6
SNIP value: 1.262
SNIP1.262
IPP value: 3.90
IPP3.90
SJR value: 2.185
SJR2.185
Scimago H <br class='widget-line-break'>index value: 71
Scimago H
index
71
h5-index value: 40
h5-index40
Volume 12, issue 4
Clim. Past, 12, 871–881, 2016
https://doi.org/10.5194/cp-12-871-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Clim. Past, 12, 871–881, 2016
https://doi.org/10.5194/cp-12-871-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 08 Apr 2016

Research article | 08 Apr 2016

The climate reconstruction in Shandong Peninsula, northern China, during the last millennium based on stalagmite laminae together with a comparison to δ18O

Qing Wang1, Houyun Zhou2, Ke Cheng1, Hong Chi1, Chuan-Chou Shen3, Changshan Wang1, and Qianqian Ma1 Qing Wang et al.
  • 1Coast Institute of Ludong University, Yantai 264025, China
  • 2School of Geography, South China Normal University, Guangzhou 510631, China
  • 3High-precision Mass Spectrometry and Environment Change Lab (HISPEC), Department of Geosciences, National Taiwan University, Taipei 10617, Taiwan, ROC

Abstract. Stalagmite ky1, with a length of 75 mm and the upper part (from top to 42.769 mm depth) consisting of 678 laminae, was collected from Kaiyuan Cave in the coastal area of Shandong Peninsula, northern China, located in a warm temperate zone in the East Asia monsoon area. Based on high-precision dating with the U–230Th technique and continuous counting of laminae, the 1st and 678th laminae have been confirmed to be AD 1894 ± 20 and 1217 ± 20 from top to bottom, respectively. By the measurement of laminae thickness and δ18O ratios, we haved obtained the time series data of thickness of laminae and δ18O ratios from AD 1217 ± 20 to 1894 ± 20, analyzed the climatic–environmental meaning of variations in the thickness of laminae, which have a good correspondence with the cumulative departure curve of the drought–waterlog index in the historical period. The results show that, in the  ∼  678 years from AD 1217 ± 20 to 1894 ± 20, both the thickness of the laminae and the degree of fluctuation in the thickness of the laminae of stalagmite ky1 have obvious stages of variation and are completely synchronized with the contemporaneous intensity of the summer monsoons and precipitation as time changed. There is a negative correlation between the thickness of the laminae and the summer monsoon intensity and precipitation. There is a positive correlation between the degree of fluctuation in the thickness of the laminae and both the intensity of the summer monsoons and the precipitation. Therefore, for the Kaiyuan Cave in the coastal area of both the warm temperate zone and the East Asia monsoon area, the variations in the thickness of the laminae are not only related to the change in the climatic factors themselves but also related to the degree of climatic stability. In the coastal area belonging to the warm temperate zone and the East Asia monsoon area, the climate change between the LIA (Little Ice Age) and the MWP (Medieval Warm Period), in addition to less precipitation and low temperatures (a type of dry and cold climate), also shows an obviously decreasing trend in the degree of climatic stability.

Publications Copernicus
Download
Short summary
The upper part of stalagmite ky1 (from top to 42.769 mm depth), consisting of 678 laminae, was collected from a cave in northern China, located in the East Asia monsoon area. The time of deposition ranges from AD 1217±20 to 1894±20. The analysis shows that both the variations in the thickness of the laminae themselves and the fluctuating degree of variation in the thickness of the laminae of stalagmite ky1 have obviously staged characteristics and synchronized with climate.
The upper part of stalagmite ky1 (from top to 42.769 mm depth), consisting of 678 laminae, was...
Citation