摘要
基于山东半岛泥质区附近四根岩芯沉积物样品的高分辨率取样(1cm)粒度测试分析资料,分析了粒度频率曲线、粒度参数及其粒度组成特点,采用粒级-标准偏差法提取了沉积物的敏感性粒级,并探讨了研究区沉积物的搬运机制及对东亚冬季风强度的响应。结果表明:山东半岛泥质区沉积物以粉砂为主,砂和粘土的含量变化差异较大,粉砂含量变化较小,主要以跃移加悬浮组分为主。发育了大致相同的三个粒级组分,分别是粒组1(<1.24μm)、粒组2(1.24~20.45μm)和粒组3(28.84~136.47μm),同时提取出粒组3(28.84~136.47μm)为研究区岩芯的敏感粒级,可以作为山东半岛泥质区的环境替代指标。测年数据和环境代用指标分析表明,敏感粒级平均粒径波动的程度可以反映东亚季风强弱变化,同时百年尺度中,北太平洋涛动和东亚冬季风与研究区沉积环境存在着紧密的联系,东亚冬季风较强时,岩心敏感粒级平均粒径呈现粗化趋势,同时与NPO指数呈现相反趋势,应用敏感粒级粒径波动来指示气候变化具有极其重要的意义。
Based on the high resolution sampling(1 cm),we performed grain size analysis on four cores taken in the inner shelf of the Shandong Peninsula.The grain-size frequency curves,particle size parameters and the characteristics of its sediments were analyzed.The sensitivity grain size of sediment was determined by standard deviation method,and their geological implication was Discussed.Three grain size components were recognized at<1.24μm(Component 1),1.24~20.45μm(Component 2),and 28.84~136.47μm(Component 3).And the component 3(28.84~136.47μm)was extracted as the sensitive grain size of the core in the study area,and it can be used as an environmental substitute index in the muddy area of Shandong Peninsula.Analysis of dating data and environment proxies indicate that the variability of the main grain size of sensitive particle size reflects the change of Asian monsoon.Besides,North Pacific Oscillation(NPO)and Asian winter monsoon are closely related with the sediment environment in the study area at century scale.The main grain size of sensitive particle size are coarser when Asian winter monsoon turn stronger and it have a negative correlation with NPO index.Variability of the main grain size of sensitive particle size has vital significance to indicate climate change.
引文
[1]徐芳,冯秀丽,陈斌林,等.江苏灌河口沉积物粒度组分特征及沉积速率研究[J].海洋科学,2013,37(6):82-88.Xu Fang,Feng Xiuli,Chen Binlin,et al.Study on grain-size characteristics and deposition rate in the Guanhe Estuary of Jiangsu Province[J].Marine Sciences,2013,37(6):82-88.
[2]高抒.沉积物粒径趋势分析:原理与应用条件[J].沉积学报,2009,27(5):53-63.Gao Shu.Grain size trend analysis:Principle and applicability[J].Acta Sedimentologica Sinica,2009,27(5):53-63.
[3]何起祥.中国海洋沉积地质学[M].北京:海洋出版社,2006.He Qixiang.Marine Sedimentary Geology of China[M].Beijing:China Ocean Press,2006.
[4]徐东浩,李军,赵京涛,等.辽东湾表层沉积物粒度分布特征及其地质意义[J].海洋地质与第四纪,2012,32(5):35-42.Xu Donghao,Li Jun,Zhao Jingtao,et al.Grain-size distribution of surface sediments of the Liaodong Bay,Bohai and sedimentary environment restoration[J].Marine Geology and Quaternary Geology,2012,32(5):35-42.
[5]Sun Donghuai,Bloemendal J,Rea D K,et al.Grain-size distribution function of polymodal sediments in hydraulic and Aeolian environments,and numerical partitioning of the sedimentary components[J].Sedimentary Geology,2002,152(3/4):263-277.
[6]蒋庆丰,刘兴起,沈吉.乌伦古湖沉积物粒度特征及其古气候环境意义[J].沉积学报,2006,24(6):877-882.Jiang Qingfeng,Liu Xingqi,Shen Ji.Grain-size characteristics of Wulungu Lake sediments and its palaeoclimate and palaeoenvironment implication[J].Acta Sedimentologica Sinica,2006,24(6):877-882.
[7]沈星,褚忠信,王玥铭,等.北黄海西部与南黄海中部泥质区岩芯敏感粒级及其环境意义[J].沉积学报,2015,33(1):124-133.Shen Xing,Chu Zhongxin,Wang Yueming,et al.Sensitive grain size and its environmental significance of modern mud patches in Southern and Northern Parts of the Yellow Sea[J].Acta Sedimentologica Sinica,2015,33(1):124-133.
[8]肖合辉,王厚杰,毕乃双,等.渤黄海海域悬浮体季节性分布及主要运移路径[J].海洋地质与第四纪地质,2015,35(2):11-21.Xiao Hehui,Wang Houjie,Bi Naishuang,et al.Seasonal variation of suspended sediment in the Bohai and Yellow Sea and the pathway of sediment transport[J].Marine geology&Quaternary geology,2015,35(2):11-21.
[9]向荣,杨作升,等.济州岛西南泥质区近2300a来环境敏感粒度组分记录的东亚冬季风变化[J].中国科学.D辑:地球科学,2006(7):654-662.Xiang Rong,Yang Zuosheng,et al.East Asian Winter Monsoon recorded by Environmental sensitive grain size composition in southwestern muddy area of Jeju Island in recent 2300a[J].Science in China Ser.D Earth Sciences,2006(7):654-662.
[10]秦蕴珊,李凡.黄河入海泥沙对渤海和黄海沉积作用的影响[J].海洋科学集刊,1986,27:124-134.Qin Yunshan,Li Fan.Deposition of sediment from the sea into the sea in Bohai and the Yellow River in the Yellow Sea[J].Marine Science Bulletin,1986,27:124-134.
[11]王桂芝,高抒,李凤业.北黄海西部的全新世泥质沉积[J].海洋学报,2003,25(4):125-134.Wang Guizhi,Gao Shu,Li Fengye.Holocene mud deposits in the west of the northern Huanghai Sea[J].Acta Oceanologica Sinica,2003,25(4),125-234.
[12]赵一阳,李凤业,D J DeMaster,等.南黄海沉积速率和沉积通量的初步研究[J].海洋与湖沼,1991,22(1):38-43.Zhao Yiyang,Li Fengye,D J DeMaster,et al.Preliminary studies on sedimentation rate and sediment flux of the South Huanghai Sea[J].Oceanologia et Limnologic Sinica,1991,22(1):38-43.
[13]李凤业,高抒,贾建军,等.黄、渤海泥质沉积区现代沉积速率[J].海洋与湖沼,2002,33(4):364-369.Li Fengye,Gao Shu,Jia Jianjun,et al.Contemporary deposition rates of fine-grained sediment in the Bohai and Yellow Seas[J].Oceanologia et Limnologic Sinica,2002,33(4):364-369.
[14]齐君,李凤业,宋金明,等.北黄海沉积速率及其沉积通量[J].海洋地质与第四纪地质,2004,24(2):9-14.Qi Jun,Li Fengye,Song Jinming,et al.Sedimentation rate and flux of the North Yellow Sea[J].Marine Geology and Quaternary Geology,2004,24(2):9-14.
[15]胡邦琦,李国刚,李军,等.黄海、渤海铅-210沉积速率的分布特征及其影响因素[J].海洋学报,2011,33(6):125-133.Hu Bangqi,Li Guogang,Li Jun,et al.Spatial variability of the210Pb sedimentation rates in the Bohai and Huanghai Seas and its influencing factors[J].Acta Oceanologica Sinica,2011,33(6):125-133.
[16]McManus J.Grain size determination and interpretation[J].Techniques in Sedimentology,1998,408:63-85.
[17]陈桥,刘东艳,陈颖军,等.粒级-标准偏差法和主成分因子分析法在粒度敏感因子提取中的对比[J].地球与环境,2013,41(3):319-325.Chen Qiao,Liu Dongyan,Chen Yingjun,et al.Comparative analysis of grade-standard deviation method and factors analysis method for environmental sensitive factor analysis[J].Earth and Environment,2015,41(3):319-325.
[18]冯士筰.风暴潮的研究进展[J].世界科技研究与发展,1998,20(4):44-47.Feng Shizuo.The advance of researches on storm surges[J].World Sci-Tech R&D,1998,20(4):44-47.
[19]Vis G S.Grain size distributions and depositional processes[J].Journal Sedimentary Petrology,1969,39(3):1074-1106.
[20]刘杰,刘潇,冯秀丽.潍坊港附近海域表层沉积物粒度分布特征与动力环境影响[J].海洋地质前沿,2015,31(3):1-6.Liu Jie,Liu Xiao,Feng Xiuli.Grain size distribution pattern of surface sediments in the waters adjacent to Weifing Port and its dynamic response to environment[J].Marine Geology Frontiers,2015,31(3):1-6.
[21]Prins M A,Postma G,Weltje G.Controls on the terrigenous sediment supply to the Arabian Sea during the late Quaternay:The Makran continental slope[J].Marine Geology,2000,169(3-4):351-371.
[22]Ding Z L,Yu Z W,Yang S L,et al.Coeval changes in grain size and sedimentation rate of eolian loess,the Chinese Loess Plateau[J].Geophys Res Lett,2011,28(10):2097-2100.
[23]Stuut J B W,Prins M A,Schneider R R,et al.A 300-kyrrecord of aridity and wind strength Africa:Inferences from grain-size distributions of sediments on Walvis Ridge,S E Atlantic[J].Marine Geology,2002,180(1-4):221-233.
[24]Pichevin L,Cremer M,Griandeau J,et al.A 190ky record of lithogenic grain-size on the Namibian slope:Forging a tight link between past wind-strength and coastal upwelling dynamics[J].Marine Geology,2005,218(1-4):81-96.
[25]田元,范德江,张喜林,等.东海内陆架沉积物敏感粒级构成及其地质意义[J].海洋与湖沼,2016,47(2):319-326.Tian Yuan,Fan Dejiang,Zhang Xilin,et al.Sensitive grain size components and their geological implication in the inner shelf of the East China Sea[J].Oceanologia et Limnologic Sinica,2016,47(2):319-326.
[26]王勇智,乔璐璐,杨作升,等.近海强海流切变峰作用下悬浮沉积物的输送和沉积—以山东半岛东端外海为例[J].沉积学报,2013,31(3):486-496.Wang Yongzhi,Qiao Lulu,Yang Zuosheng,et al.Suspended sediment transport and deposition due to strong regional shear current front:an example from the shelf waters off eastern Shandong Peninsula[J].Acta Sedimentologica Sinica,2013,31(3):486-496.
[27]王安国,张训华,李广雪,等.山东半岛近岸海区全新世泥质沉积体研究现状[J].海洋地质前沿,2013,29(10):52-58.Wang Anguo,Zhang Xunhua,Li Guangxue,et al.A review of the sedimentation of the Holocene clinoform off Shandong Peninsula[J].Marine Geology Frontiers,2013,29(10):52-58.
[28]王伟,李安春,徐方建,等.北黄海表层沉积物粒度分布特征及其沉积环境分析[J].海洋与湖沼,2009,40(5):525-531.Wang Wei,Li Anchun,Xu Fangjian,et al.Distribution of surface sediments and sedimentary environment in the North Yellow Sea[J].Oceanologia et Limnologia Sinica,2009,40(5):525-531.
[29]程鹏,高抒.北黄海西部海底沉积物的粒度特征和净输运趋势[J].海洋与湖沼,2000,31(6):604-615.Cheng Peng,Gao Shu.Net sediment transport patterns over the Northwestern Yellow Sea,based upon grain size trend analysis[J].Oceanologia et Limnologia Sinica,2000,31(6):604-615.
[30]郭冬,孙照渤.冬季北太平洋涛动异常与东亚冬季风和我国天气气候的关系[J].大气科学学报,2004,27(4):461-470.Guo Dong,Sun Zhaobo.Relationships of winter North Pacific Oscillation anomalies with the East Asian Winter monsoon and weather and climate in China[J].Journal of Nanjing Institute of Meteorology,2004,27(4):461-470.