冲绳海槽二万年以来沉积物中烯酮化合物与古温度的研究
Study on the paleotemperature and alkenon, in sediment from the Okinawa Trough during the last 20000 a
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摘要: 应用烯酮化合物的不饱和比值U37k计算得出冲绳海槽海水古温度波动幅度在15.9~26.2℃之间,平均为22.9℃,和冬季实测表层水温22.0℃相接近,探讨了U37k值在冲绳海槽指示的古海水温度和季节有关,主要反映在冬季。Abstract: The sea surface temperature is estimated by the U37K value (the unsaturated ratio of alkenone) in sediment from the Okinawa Trough during the last 20000 a.They range from 15.9 to 96.2℃,the average is 22.9℃.The sea surface temperature in winter is 22℃.It indicates that the sea surface temperature from U37K is close to the above value.
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Key words:
- Sediment /
- alkenone /
- manofossils /
- paleotemperature
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Boon J J.Organic gecchemcal analysis of cores from site 362 Walvis Ridge,DSDP leg40.In:Bolli H M,Ray W F B,ed.Initial Rep.Deep Sea Drilling Proj.Washington,U.S.Government Printing Ofice,1978,40(Suppl):627~637 De leeuw J,Meer F.Wvan der,Rijpstra W I C et al.On the occurrence and structural identification of long chain unsaturated ketones and hydrocarbons in sediments.In:Douglas A G,Maxwell J R,ed.Advances in Oganic Geochemistry 1979.Pergamon Press Oxfoed:1980.211~217 Marlowe I T,Brassell S C,Eglinton G et al.Long-chain alkenones and alkyl alkenoates and the fossil coccolith record of marine sediments.Chem Geol,1990,88:349~375 Sikes E L,Volkman J K.Calibration of alkenone unsaturation ratios(u) for paleotemperature estimation in cold polar waters.Geochim Cosmochim Acta,1993,57:1883~1889 Sikes E L,Farrington J W,Keigwin L D et al.Alkenones and alkenes in surface waters and sediments of the Southern Ocean:implications for paleotemperature estimation in polar regions.Geochim Gosmochim Acta,1997,61:1495~1505 唐运千,郑士龙,史继杨.长链烯酮化合物与生物化石.东海海洋,1995,13:20~28 陈明助,许德.沉积物烯酮类含量及其UK37指标在古海洋学上之应用,分析方法与实例.台湾大学海洋学刊,1994,32:79~86 Brassell S C,Eglinton G,Marlowe I T et al.Molecular stratigraphy:anew tool for climatic assessment.Nature,1986,320:129~133 Brassell S C,Brereton R G,Grimal G et al.Paleoclimatic singnals recognizes by chemometric treatment of molecular stratigraptic data.Org Geochem,1986,10:649~660 Volkman J K,Barrett S M.Blackburn S I et al.Alkenones in Gephyrocapsa oceanica:implications for studies of paleoclimate.Geochim Cosmochim Acta,1995,59:513~520 Brassell S C.Application of biomarkers for delinearing maxine paleoclimatic fluctuations during the Pleistocene.In:Engel M H,Macdb S A,ed.Organic Geochemistry:Principles and Applications.1993.699~738 Come M H,Eglinton G.Alkenones and alkenoate distribution within the euphotic zone of the eastern North Atlantic.Deep-Sea Res,1993,40:1935~1961 Rosell-Mele A,Eglinton G,Pflaumann U et al.Atlantic core-top calibration of the UK37 index as sea-surface paleotemperature indication.Geochim Cosmochim Acta,1995,59:3009~3107 Madureira L A S,Conte M H,Eglinton G.Early diagenesis of lipid biomarker compounds in North Atlantic sediments.Paleoceanography,1995,10:620~642 同济大学海洋地质系.古海洋学概论.上海:上海同济大学出版社,1989,315 龚庆杰,吴良基,吴时国等.南海长链烯酮化合物的检测及UK37的应用.地球化学,1999,28:51~57 Zhao M,Bereridge Nas,Shackleton N J et al.Molecular stratigraphy of cores off northwest Africa:sea surface temperature history over the last 80 ka.Paleoceanography,1995,(3):661~675 Chapman M R,Shackleton N J.Faunal and alkenone reconstructions of subtropical North Atlantic surface hydrography and paleotemperature over the last 28 kyr.Paleoceanography,1996,11:343~357 刘红斌,何德华,王春生.东海中南部黑潮区浮游动物分布与群落规划分的初步研究.黑潮调查研究论文选(二).北京:海洋出版社,1991.305~313 Sikes E L,Keigwin L D.Equatorial Atlantic sea surface temperature for the last 30 kyr:A comparison of UK37,δ18O and foraminferal assemblage temperature estimates.Paleoceanography,1994,9:31~45
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