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白令海北部陆坡BR07孔年龄框架重建

, PP. 67-74

Keywords: 硅藻,白令海,放射性碳测年

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Abstract:

通过对比白令海BR07孔与B5-4孔硅藻百分含量、颜色反射率等参数结果,综合建立了BR07孔年龄框架。根据该重建年龄结果,BR07孔年龄约为11.3~1.9ka,平均沉积速率约为28.5cm/ka,略低于B5-4孔。基于圆柱拟脆杆藻与塞米新细齿藻比值Fragilariopsiscylindrus含量/(Fragilariopsiscylindrus含量+Neodenticulaseminae含量)重建的近万年来白令海海冰变化历史,记录到该区域末次冰消期以来包括新仙女木事件在内的3次冷事件以及1次暖事件,其中新仙女木事件约发生于距今11.3~10.7ka,与格陵兰冰心记录对应值距今12.9~11.6ka基本相近,这进一步佐证了该重建年龄比原始的全样有机碳AMS14C测年结果更可信。

References

[1]  Takahashi K. The Bering Sea and paleoceanography[J]. Deep Sea Research Part Ⅱ, 2005, 52: 2080-2091.
[2]  Gorbarenko S A, Wang P, Wang R, et al. Orbital and suborbital environmental changes in the southern Bering Sea during the last 50 kyr[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 2010, 286: 97-106.
[3]  Wang R, Li X, Xiao W S, et al. Paleoceanographic records and sea ice extension history on the slope of the northern Bering Sea over the last 100 ka BP[J]. Acta Oceanologica Sinica, 2005, 24: 117-126.
[4]  王汝建,陈荣华.白令海晚第四纪的Cycladophora davisiana:-个地层学工具和冰期亚北极太平洋中层水的替代物[J].中国科学,D辑,2005,35(2):149-157.
[5]  张海生. 中国第三次北极科学考察报告[R]. 北京: 海洋出版社, 2009:1-225.
[6]  Grebmeier J M, Cooper L W, Feder H M, et al. Ecosystem dynamics of the Pacific-influenced Northern Bering and Chukchi Seas in the Amerasian Arctic[J]. Progress in Oceanography, 2006, 71: 331-361.
[7]  Schrader H J. Proposal for a standardized method of cleaning diatom-bearing deep-sea and land-exposed marine sediments[J]. Beiheft zur Nova Hedwigia, 1974, 45: 403-409.
[8]  Elias S A, Short S K, Nelson C H, et al. Life and times of the Bering land bridge[J]. Nature, 1996, 382: 60-63.
[9]  Cai M H, Lin J, Hong Q Q, et al. Content and distribution of trace metals in surface sediments from the northern Bering Sea, Chukchi Sea and adjacent Arctic areas[J]. Marine pollution bulletin, 2011, 63: 523-527.
[10]  Carlson P R, Karl H A. Development of large submarine canyons in the Bering Sea, indicated by morphologic, seismic, and sedimentologic characteristics[J]. Geological Society of America Bulletin, 1988, 100: 1594-1615.
[11]  Stuiver M, Grootes P M, Braziunas T F. The GISP2 δ18O climate record of the past 16, 500 years and the role of the sun, ocean, and volcanoes[J]. Quaternary Research, 1995, 44: 341-354.
[12]  Cook M S, Keigwin L D, Sancetta C A. The deglacial history of surface and intermediate water of the Bering Sea[J]. Deep-Sea Research Ⅱ, 2005, 52: 2163-2173.
[13]  Okada M, Takagi M, Narita H, et al. Chronostratigraphy of sediment cores from the Bering Sea and the subarctic Pacific based on paleomagnetic and oxygen isotopic analyses[J]. Deep-Sea Research Ⅱ, 2005, 52: 2092-2109.
[14]  Sancetta C, Robinson S W. Diatom evidence on Wisconsin and Holocene events in the Bering Sea[J]. Quaternary Research, 1983, 20: 232-245.
[15]  葛淑兰, 石学法, 黄元辉, 等. 白令海岩芯记录的冰消期14 ka以来地磁场强度和方向[J]. 地球物理学报, 2013. 56: 3071-3084.
[16]  中国首次北极科学考察队. 中国首次北极科学考察报告[M]. 北京: 海洋出版社, 2000:1-191.
[17]  Hkansson H. The recent diatom succession of Lake Havgrdssjn, south Sweden//Mann D G. Proceeding of the Seventh International Diatom Symposium. Otto Koeltz: Philadelphia, 1984: 411-429.
[18]  黄元辉, 石学法, 吕华华, 等. 白令海特征区域的表层沉积硅藻分布及其古海洋学意义[J]. 海洋学报, 2012, 34: 106-113.
[19]  Boucsein B, Stein R. Black shale formation in the late Paleocene/early Eocene Arctic Ocean and paleoenvironmental conditions: New results from a detailed organic petrological study[J]. Marine and Petroleum Geology, 2009, 26 (3) : 416-426.
[20]  Lowe J J, Walker M J C. Reconstructing quaternary environments, 2nd edition[M]. London: Addison-Wesley-Longman, 1997:245-246.
[21]  王汝建, 李霞, 肖文申, 等. 白令海北部陆坡100ka来的古海洋学记录及海冰的扩张历史[J]. 地球科学:中国地质大学学报, 2005, 30: 550-558.
[22]  Crockford S J, Frederick S G. Sea ice expansion in the Bering Sea during the Neoglacial: evidence from archaeozoology[J]. The Holocene, 2007, 17: 699-706.
[23]  Hou J, Huang Y, Shuman B N, et al. Abrupt cooling repeatedly punctuated early-Holocene climate in eastern North America[J]. The Holocene, 2011, 22: 525-529.

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