新仙女木事件在热带湖光岩玛珥湖的记录
收稿日期: 2000-10-17
修回日期: 2000-11-22
网络出版日期: 2001-01-20
基金资助
国家自然科学青年基金项目(40002012);国家自然科学基金资助重大项目(49894170);国家自然科学基金资助项目(497721
New Evidence from the Sediments of Huguangyan Maar Lake, Southern China For the Younger Drays Event
Received date: 2000-10-17
Revised date: 2000-11-22
Online published: 2001-01-20
湖光岩玛珥湖沉积物总有机碳、总氮、总氢、生物硅等有机地球化学指标以及AMS14C年代明确地指示了新仙女木事件在中国南方地区的存在,它不仅表现为降水的显著减少,而且表现为气温的降低,显示了凉干的气候环境,反映了季风系统在很短的时间内进行了大规模重组,夏季风强度显著减弱的事实,这为西北太平洋低纬度区存在YD事件提供了新的来自于陆地的证据。
王文远, 王文远, 刘嘉麒 . 新仙女木事件在热带湖光岩玛珥湖的记录[J]. 地理科学, 2001 , 21(1) : 94 -96 . DOI: 10.13249/j.cnki.sgs.2001.01.94
Maar Lake recorded paleoclimate changes like a natural gauge The morphological features of Maar Lake ensue to homogeneity of detritus input and high-resolution record of paleoenvironmental variations The research of Maar Lake will play an important role for reconstructing paleoclimate history Maar Lake Huguangyan is located in Leizhou Peninsula, the southern China, near Pacific Ocean in the east and South China Sea in the south, where which is intersect site of eastern southeast monsoon and southwest monsoon and sensitive to climate change The sediments from Maar Lake Huguangyan have been recovered The concentrations of biogenic silica, total organic carbon, total nitrogen and total hydrogen inferred from the sediments of Maar Lake Huguangyan provide a climate record of the last deglaciation with century resolution The records fully demonstrate the Younger Dryas event is well documented in the southern China, which occurred synchronously with that recorded in Greenland, and point to the cool and dry climatic conditions during this period, because of the remarkable decrease of precipitation and temperature These results suggest the rapid reorganization of atmospheric circulation in monsoon climate system in short time, and reflect that the intensity of the summer monsoon was reduced during the Younger Dryas period
[1] Talor K C,Lamorey G W,Doyle G A,et al.The flickering switch of late Pleistocene climate change [J].Nature,1993,361:432-436.
[2] An Z S,Porter S C,Zh W J,et al.Episode of strengthened summer monsoon climate of Younger Dryas age on the loess plateau of Central China[J].Quaternary Research,1993,39:45-54.
[3] 周卫建,李小强,董光荣,等.新仙女木期沙漠/黄土过渡带高分辨率泥炭记录-东亚季风气候颤动的实例[J].中国科学 (D辑),1996,26(2):118~124.
[4] 周杰,周卫建,陈惠忠,等.新仙女木时期东亚夏季风降水不稳定的证据[J].科学通报,1999,44(2):205~207.
[5] 汪品先,卞云华,李保华,等.西太平洋边缘海的"新仙女木"事件[J].中国科学(D辑),1996,26(5):452~460.
[6] 王文远.中国南方湖光岩玛珥湖高分辨率的古气候记录(D).中国科学院地质研究所博士论文,1998.25~28.
[7] Sifeddine P,Bertrand E,Lallier-Verges,Patience A J.Lacustrine Organic Fluxes and Palaeoclimatic Variations During the Last 15Ka:Lac du Bouchet(Massif central,France) [J].Quaternary Science Reviews,1996,15:203-212.
[8] Luo J Y,Chen C T,Wann J K.Paleoclimatological records of the Great Ghost lake in Taiwan[J].Science in China (D series),40(3):284-292.
[9] Meyers P A,Lshiwatari R.Lacustrine organic geochemistry-an overview of indicators of organic matter source and diagenesis in lake sediments[J].Org.Geochem,1993,20(7):867-900.
[10] Colman S M,Peck J A,Karabanov E B,et al.Continental climate response to orbital forcing from biogenic silica records in lake Baikal[J].Nature,1995,378:769-771.
[11] Jule Xiao,Yoshio Inouchi,Hisao Kumai,et al.Biogenic silica record in lake Biwa of central Japan over the past 145,000 years[J].Qua.Res.,1997,47:277-283.
[12] Stuiver M,Grootes P M,BraziunasT F.The GISP2 δ18O Climate record of past 16,500 years and the role of the Sun,ocean,and volcanoes.Quaternary Research,1995,44:341-354.
[13] Thunell R C,Miao Q.Sea surface temperature of the western Equatorial Pacific ocean during the Younger Dryas[J].Qua.Res.,1996,46:72-77.
[14] Fairbanks R G.A 17000-year glacio-eustatic sea level record:Influence of glacial melting rates on the event and deep-ocean circulation[J].Nature,1989,342:637-642.
[15] Broecker W S.Paleocean circulation during the Last Glaciation:A bipolar seesaw[J].Paleoceanography,1998,13(2):119-121.
[16] Goslar T,Amold M,Bard E,et al.High concentration of atmosphric 14C during the Younger Dryas cold episode[J].Nature,1995,377:414-417.
/
| 〈 |
|
〉 |