OXYGEN ISOTOPE CHARACTERISTIC AND PALEOCEANOGRAPHIC VARIATIONS OF THE WESTERN PACIFIC WARM POOL SINCE PLIOCENE
-
摘要: 西太平洋暖池区作为驱动全球气候变化引擎,是近年来古海洋学尤其是古气候研究的热点。以南海大洋钻探ODP130航次807站浮游有孔虫的氧同位素值为材料,建立了西太平洋暖池核心区跨越4.5 Ma、分辨率达2~3 ka的天文年代标尺,通过浮游有孔虫表层种和次表层种的氧同位素的变化来分析温跃层、上部水体垂直结构的变化,结合频谱分析以及与地球轨道参数(ETP)的交叉频谱分析,研究始新世以来尤其是北极冰盖形成时期西太平洋暖池的演变及其对地球轨道驱动的响应,为全球气候环境演化提供科学依据。Abstract: As the global climate engine,the western Pacific warm pool is the hot issue concerning paleoceanography and paleoclimate research. Through the planktonic foraminifera oxygen isotope from ODP 130 at site 807A,we established the Astronomical Timescale for the past 4.5 Ma.The time resolution is better than 2~3 ka.We studied the depth of thermocline and the upper water column structure variation by the oxygen isotope changes of surface genus and sublayer genus of plantonic foraminifera.Combined with frequence analysis and cross frequence analysis with Earch Trace Parameter(ETP),we studied the evolution of western Pacific warm pool since Pliocene,especially during the stage of ice sheet formation at North Pool, and its response to earch orbit changes, that provided a scientific foundation for global climate evolution.
-
-
[1] Cane M.A role for the tropical Pacific[J].Science,1998,282:59.
[2] Cane M,Evans M.Do the tropics rule[J].Science,2000,290:1107-1108.
[3] Yan X H,Hou C R,Zheng Q,et al.Temperature and size varibilities of the Western Pacific Warm Pool[J].Science,1992,58:1643-1645.
[4] Webster P J,Magana V O,Palmer T N,et al.Monsoon:processes,predictability and the prospects for prediction[J].Journal of Geophysical Research,1998,103(C7):14451-14510.
[5] Cane M A.A role for the tropical Pacific[J].Science,1998,282:59-61.
[6] Sun X J,Luo Y L,Huang F,et al.Deep sea pollen from the South China Sea:Pleistocene indicators of East Asian monsoon[J].Marine Geology,2003,201:97-118.
[7] 田军,汪品先,成鑫荣,等.南海ODP1143站上新世至更新世天文年代标尺的建立[J].地球科学——中国地质大学学报,2005,30(1):31-39.
[TIAN Jun,WANG Pinxian,CHENG Xin rong.Establishment of the Plio-Pleistocene Astronomical Timescale of ODP Site 1143,Southern South China Sea[J].Earth Science-Journal of China University of Geosciences,2005,30(1):31-39.]
[8] 金海燕,翦知湣,成鑫荣.赤道西太平洋暖池中更新世过渡期的古海洋变化[J].海洋地质与第四纪地质,2006,26(2):71-78.
[JIN Haiyan,JIAN Zhimin,CHENG Xinrong.Paleoceanographic variations of the western pacific warm pool during the middle pleistocene climate transition[J].Marine Geology and Quaternary Research,2006,26(2):71-78.]
[9] 金海燕,翦知湣,刘东升.西太平洋翁通-爪哇海台晚第四纪浮游有孔虫群与古温度变化[J].海洋地质与第四纪地质,2003,23(4):65-71.
[JIN Haiyan,JIAN Zhimin,LIU Dongsheng.Late Quaternary variations of planktonic foraminiferal assemblage and paleo-temperature of Ontong-Java plateau,West Pacific[J].Marine Geology and Quaternary Research,2003,23(4):65-71.]
[10] Prentice M L,Friez J K,Simonds G G,et al.Neogene trends in planktonic foraminifer δ18O from site 807:implications for global ice volume and western equatorial Pacific sea surface temperatures[J].ODP Results scientific,1993,130:281-283,295-298.
[11] Ravelo A C,Fairbanks R G,Philander G.Reconstructing tropical Atlantic hydrography using planktonic foraminifera and ocean model[J].Paleoeanography,1990,5:5409-431.
[12] Ravelo A C,Fairbanks R G.Oxygen isotopic composition of multiple species of planktonic foraminifera:Recorders of the modern photic zone temperature gradient[J].Paleoeanography,1992,6:815-831.
[13] Huang B Q,Cheng X R,Jian ZM,et al.Response of upper ocean structure to the initiation of the North Hemisphere glaciation in the South China Sea[J].Palaeogeography Palaeoclimatology Palaeoecology,2003,196:305-318.
[14] Shevenell A E,Kennett J P,Lea D W.Middle Miocene southern ocean cooling and Antarctic cryosphere expansion[J].Science,2004,305:1766-1770.
[15] Cannariato K G,Ravelo A C.Pliocene-Pleistocene evolution of eastern tropical Pacific surface water circulation and thermocline depth[J].Paleoceanography,1997,12(6):805-820.
[16] Whitman J M,Berger W H.Pliocene-Pleistocene carbon isotope record,Site 586,Ontong Java Plateau[J].Proceedings of the Ocean Drilling Program.Scientific Results,1993,130:333-348.
[17] Ravelo A C,Shackleton N J.Evidence for surface water circulation changes at site 851 in the eastern tropical Pacific Ocean[J].ODP Scientific Results,1995,138:503-514.
[18] Ravelo A C,Fairbanks R G.Oxygen isotopic composition of multiple species of planktonic foraminifera:recorders of the modern photiczone temperature gradient[J].Paleoceanography,1992,7(6):815-831.
[19] 汪品先.地质计时的天文钟摆[J].海洋地质与第四纪地质,2006,26(1):2-6.
[WANG Pinxian.Astronomical"pendulum"for geological lock[J].Marine Geology and Quaternary Research,2006,26(1):2-6.]
[20] Rossignol-Stick M,Nesteroff V,Olive P,et al.After the deluge:Mediterranean stagnation and sapropel formation[J].Nature,1982,295:105-110.
[21] Short D A,Mengel J G,Crowley T J,et al.Filtering of Milankovitch cycles by Earth's geography[J].Quaternary Research,1991,35:157-173.
[22] Ruddiman W F.Earths Climate:Past and Future[M].Freeman&Co.,N.Y.,2001.
[23] Ruddiman W F.What is the timing of orbital-scale monsoon changes?[J].Quaternary Science Reviews,2006,25(7-8):657-658.
-
计量
- 文章访问数: 1050
- PDF下载数: 7
- 施引文献: 0
下载: