THE MID-HOLOCENE CLIMATE VARIATION INFERRED FROM A DATED STALAGMITE RECORD FROM WANGJIAWEI CAVE, NORTHEAST CHINA
-
摘要: 基于典型东亚季风区辽宁省本溪市2支石笋样品(W6与W4),通过9个230Th年龄和386个氧同位素数据,重建了10 500~5 000 aBP期间平均分辨率为12~34 a的氧同位素时间变化序列。研究时段石笋δ18O相对振幅为2.0‰,在平均值约-8.5‰上下波动,指示了早全新世东亚季风强度的长期趋势变化和百年尺度振荡信息。相同时段本溪王家崴洞、湖北三宝洞、贵州董哥洞石笋δ18O记录对比结果表明,全新世石笋δ18O长期增加趋势类似于北半球太阳辐射能量变化曲线,但东北地区石笋δ18O大约在10 500 a已达到最大值,早于长江流域以南地区约1 000 a,这可能表明全新世亚洲季风降水并不同步变化,可能与热带、亚热带季风系统差异响应于区域大气环流有关。功率谱分析W6石笋δ18O时间序列发现其存在显著的225和91 a的周期,与树轮Δ14C周期(208和88 a)基本一致,揭示了中全新世百年尺度东亚季风变化可能主要响应于太阳活动。Abstract: Presented in this paper are the oxygen stable isotope records of the stalagmite dated with 230Th-dating method for Wangjiawei Cave in Liaoning Province, northeastern China. The records provided a clue to the history of Asian summer monsoon for the period of 10.5~5.0 kaBP. There are a series of abrupt and rapid shifts superimposed on a gradually increasing trend, indicating that the East Asian monsoon was unstable during the early Holocene. A comparison of our records to precisely dated contemporaneous stalagmite records from other caves shows that the Wanjiawan record resembles other Holocene speleothem records from subtropical locations. All of these δ18O profiles follow insolation changes, further supporting the idea that insolation is the primary factor inffuencing the Asian summer monsoon. However, a peak monsoon intensity during the early Holocene commenced as early as~10.5 kaBP in northern China, for example in Wangjiawei and Nuanhe Caves, while this shift appeared 1 000 years later, about~9 kaBP in Sanbao Cave and Dongge Cave at lower latitudes. It suggests an asynchronous change in summer monsoon precipitation in East Asia during the early Holocene, and the response of the East Asian summer monsoon precipitation to regional atmospheric circulations varied from the south to north due to monsoon intensity changes, resulting from the complex geographical configuration. The spectral analysis of δ18O time series shows cycles around 225a and 91a which are similar with the tree ring cycles of 208a and 88a by Δ14C isotopic data, indicating that solar changes may be, at least partially, responsible for changes in the intensity of the East Asian Monsoon on the centennial time scale during the early Holocene.
-
Key words:
- Benxi /
- early-Holocene /
- stalagmite /
- East Asia monsoon /
- solar activity
-
-
[1] Dong J G,Wang Y J,Cheng H,et al.A high-resolution stalagmite record of the Holocene East Asian monsoon from Mt Shennongjia, central China[J]. The Holocene,2010,20(2):257-264.
[2] Wang Y J,Cheng H,Edwards R L,et al. The Holocene Asian monsoon:links to solar changes and North Atlantic climate[J]. Science,2005,308:854-857.
[3] Hu C Y,Henderson G M,Huang J H,et al. Quantification of Holocene Asian monsoon rainfall from spatially separated cave records[J]. Earth and Planetary Science Letters,2008,266:221-232.
[4] Fleitmann D, Burns S J, Mudelsee M, et al. Holocene forcing of the Indian monsoon recorded on a stalagmite from southern Oman[J]. Science, 2003, 300:1737-1739.
[5] Zhang P Z,Cheng H,Edwards R L,et al. A test of climate, sun, and culture relationships from an 1810-year Chinese cave record[J]. Science,2008,322:940-942.
[6] Cai Y J,Tan L C,Cheng H,et al. The variation of summer monsoon precipitation in central China since the last deglaciation[J]. Earth and Planetary Science Letters,2010,291:21-31.
[7] Peng Y,Xiao J,Nakamura T,et al. Holocene East Asian monsoonal precipitation pattern revealed by grain-size distribution of core sediments of Daihai Lake in Inner Mongolia of north-central China[J]. Earth and Planetary Science Letters,2005,233:467-479.
[8] Feng Z D,An C B,Wang H B. Holocene climatic and environmental changes in the arid and semi-arid areas of China:a review[J]. The Holocene,2006,16(1):119-130.
[9] Qian W, Lin X. Regional trends in recent precipitation indices in China[J]. Meteorology and Atmospheric Physics, 2005, 90:193-207.
[10] An Z,Porter S C, Kutzbach J E, et al.Asynchronous Holocene optimum of the East Asian monsoon[J]. Quaternary Science Reviews,2000,19:743-762.
[11] Hong Y T, Hong B, Lin Q H,et al. Correlation between Indian ocean monsoon and north Atlantic climate during the Holocene[J]. Earth Planetary Science Letters,2003,211:371-380.
[12] Shen C C,Edwards R L,Cheng H,et al. Uranium and thorium isotopic and concentration measurements by magnetic sector inductively coupled plasma mass spectrometry[J]. Chemical Geology,2002,185:165-178.
[13] Hendy C H. The isotopic geochemistry of speleothems:The calculation of the effects of different modes of formation on the isotopic composition of speleothems and their applicability as paleoclimatic indicators[J]. Geochimica et Cosmochimica Acta,1971,35:801-824.
[14] O'Neil J R,Clayton R N,Mayeda J K. Oxygen isotope fractionation in divalent metal carbonate[J]. Journal Chemistry Physics,1960,30:5547-5558.
[15] 施雅风,孔昭宸, 王苏民,等.中国全新世大暖期的气候波动与重要事件[J].中国科学B辑,1992,12:1300-1308.[SHI Yafeng, KONG Zhaocheng, WANG suming,et al. The climatic fluctuation and important events of Holocene Megathermal in China[J]. Science in China (Series B),1994
,37(3):354-365.]
[16] Dansgaard W. Stable isotopes in precipitation[J]. Tellus,1964,16:436-468.
[17] Johnson K R,Ingram B L. Spatial and temporal variability in the stable isotope systematics of modern precipitation in China:implications for paleoclimate reconstructions[J]. Earth and Planetary Science Letters,2004,220:365-377.
[18] Johnson K R,Lynn Ingram B,Sharp W D,et al. East Asian summer monsoonvariability during marine isotope stage 5 based on speleothem δ18O records from Wanxiang Cave,central China[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2006,236:5-19.
[19] 董进国,孔兴功,汪永进.神农架全新世东亚季风演化及其热带辐合带控制[J].第四纪研究,2006,26(5):826-834.
[DONG Jinguo,KONG Xinggong, WANG Yongjin.The East Asian monsoon climate changes at MT.Shennongjia and its relation to shift of intertropical convergence zone during the Holocene[J]. Quaternary Sciences, 2006,26(5):826-834.]
[20] Dykoski C A,Edwards R L,Cheng H,et al.A high-resolution, absolute-dated Holocene and deglacial Asian monsoon record from Dongge Cave, China[J]. Earth and Planetary Science Letters,2005,233:71-86.
[21] Jiang W Y, Liu T S. Timing and spatial distribution of mid-Holocene drying over northern China:Response to a southeastward retreat of the East Asian Monsoon[J]. Journal of Geophysical Research, 2007(112), D24111, doi:10.1029/2007JD009050, 2007.
[22] 吴江滢,汪永进,董进国. 全新世东亚夏季风演化的辽宁暖和洞石笋δ18O记录[J]. 第四纪研究, 2011,31(6):997-1005.
[WU Jiangying, WANG Yongjin, DONG Jinguo. A stalagmite record of the Holocene East Asian summer monsoonfrom Liaoning Province[J]. Quaternary Sciences, 2011,31(6):997-1005.]
[23] Ding Y H,Johnny H. The East Asian summer monsoon:an overview[J].Meteorology and Atmospheric Physics,2005,89:117-142.
[24] Wang B,Clemens S C,Liu P. Contrasting the Indian and East Asian monsoons:implications on geologic timescales[J] Marine Geology,2003,201:5-21.
[25] 何金海,吴志伟, 江志红,等.东北冷涡的气候效应及其对梅雨的影响[J].科学通报,2006,51(23):2803-2809.
[HE Jinhai, WU Zhiwei, JIANG Zhihong, et al. "Climate effect" of the northeast cold vortex and its influences on Meiyu[J]. Chinese Science Bulletin, 2007, 52(5):671-679.]
[26] Stuiver M, Grootes P M,Braziunas T F. The GISP2δ18O climate record of the past 16500 years and the role of the sun, ocean and volcanoes[J]. Quaternary Research,1995,44(3):341-354.
[27] Hong Y T,Wang Z G,Jiang H B,et al. A 6000-year record of changes in drought and precipitation in northeastern China based on a δ13C time series from peat cellulose[J]. Earth and Planetary Science Letters,2001,185:111-119.
-
计量
- 文章访问数: 893
- PDF下载数: 3
- 施引文献: 0
下载: