检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:李辉 韩宗珠[1,2] 闫天浩 赵可心 杨叶飘 LI Hui;HAN Zongzhu;YAN Tianhao;ZHAO Kexin;YANG Yepiao(College of Marine Geosciences,Ocean University of China,Qingdao 266100,China;Key Laboratory of Submarine Geosciences and Prospecting Techniques,Ministry of Education,Qingdao 266100,China)
机构地区:[1]中国海洋大学海洋地球科学学院,青岛266100 [2]海底科学与探测技术教育部重点实验室,青岛266100
出 处:《海洋地质前沿》2023年第12期88-97,共10页Marine Geology Frontiers
基 金:国家自然科学基金(41376053)。
摘 要:稀土元素配分曲线常被用于判别沉积物物源,相同物源沉积物的稀土元素配分曲线往往具有相似的形态特征。然而,当前稀土元素配分曲线相似性判别仍然采用人眼目视判别,主观性较强且无法实现定量判别,因此需要一种统一的度量手段实现稀土元素配分曲线的定量相似度计算,进而在此基础上开展聚类、分类等统计分析操作,充分挖掘稀土元素数据中的物源信息。本研究提出一种稀土元素配分曲线相似性度量算法,该算法不受稀土元素绝对丰度的影响,能够有效甄别稀土元素配分曲线之间形态上的差异。该算法的聚类结果显示,黄河和长江是南黄海中部泥质区的主要物质来源,黄河黏土粒级物质可以由沿岸流输运至黄海33°N处,长江黏土粒级物质被黄海暖流携带北上最远至黄海36°N附近,西朝鲜海洋锋面将朝鲜半岛河流的影响范围限制在了其东侧;东南黄海泥质区除了接收朝鲜半岛河流的供给外,其南部还接收了中国河流的细粒物质供应。Rare earth element(REE)distribution curves are often used to specify sediments provenance.The REE distribution curves of sediments from the same source are often similar in shape.However,currently,the similarity discrimination of REE distribution curves still relies on visual discrimination by the human eye,which is highly subjective and cannot achieve quantitative discrimination.Therefore,a unified measurement method is needed to realize the quantitative calculation of the similarity of REE distribution,based on which statistical analyses such as clustering and classification were carried out and the information of provenance in REE perspectives was fully explored.An algorithm for measuring the similarity was proposed,and it is independent of the absolute abundance of REE and can effectively map the differences in the shape of REE distribution curves.The clustering results based on this algorithm show that the Yellow River and the Yangtze River are the main provenances of the muddy area in the central part of the South Yellow Sea.The Yellow River clay fractions can be transported to 33°N of the Yellow Sea by alongshore current,while the Yangtze River clay fractions be carried northward by the Yellow Sea Warm Current as far as to 36°N of the Yellow Sea.The West Korea Coastwise Front limits the influence of the rivers in the Korean Peninsula to its east.In addition to receiving the supply from the rivers in the Korean Peninsula,the southeast Yellow Sea mud also receives the supply of fine-grained sediments from Chinese rivers.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.90