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Concentration and distribution of 17 organochlorine pesticides (OCPs) in seawater from the Japan Sea northward to the Arctic Ocean

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Science china Chemistry 2010年第5期53卷 1033-1047页

作者： CAI MingGang 1,2,QIU CanRong 1,SHEN Yuan 1,CAI MingHong 3.HUANG ShuiYing 1,QIAN BiHua 1,SUN JiongHui 1 & LIU XiaoYan 1 1Department of Oceanography,College of Oceanography and Environmental Science,Xiamen university,Xiamen 3.1005,china 2State Key laboratory of {3. Environmental Science,Xiamen university,Xiamen 3.1005,china 3.tate Oceanic Administration Key laboratory for Polar Science,Polar Research Institute of china,shanghai 20013.,china 1. Department of Oceanography College of Oceanography and Environmental Science Xiamen University Xiamen 361005 China2. State Key Laboratory of Marine Environmental Science Xiamen University Xiamen 361005 China3. State Oceanic Administration Key Laboratory for Polar Science Polar Research Institute of China Shanghai 200136 China

Seventeen classic organochlorine pesticides in surface seawater were studied in terms of their composition pattern as well as their distribution pattern in the areas covering the Japan Sea,Okhotsk Sea,Bering Sea,Chukchi Sea and Arctic *** concentrations varied,but roughly two levels were seen with one ranging between 0.1 and 1 ng L-1 for most HCH isomers and the other lower than 0.1 ng L-1 for other *** the 17 target compounds,HCHs were dominant with a total concentration percentage generally more than 50%,and a relatively high concentration percentage of heptachlor and aldrine was also observed at scattered *** historical long-term trend of several target chemicals in the five sea zones considered was discussed in comparison with previous ***-sea zone comparison was carried out for individual chemicals by comparing the concentration variation in all five sea zones.A higher variation in concentration was generally found in the northern sea zones,namely the Bering Sea,Chukchi Sea and Arctic Ocean,for most target *** sum concentration of the 17 target chemicals displayed a general trend of increasing northward from the Japan Sea to the Okhotsk Sea to the Bering Sea to the Arctic *** latitudinal trends were found forγ-HCH andγ-HCH,and the reason of this difference was discussed by considering their divergence of thermodynamic properties,which could contribute to a slightly different fractionation effect during their northward transport driven by atmospheric long range *** source of the HCHs was identified by analyzing theγ-HCH/γ-HCH ratio,which was less than 4 without exception,indicating a component characteristic featuring a mixture of technical HCHs and *** addition,the vertical distribution ofγ-HCH,γ-HCH and their ratio at station B80 was *** patterns were found in the upper 3.0 m while in layers from 3.0 m downward to 3.00 m the patterns were fairly *** vertical p

关键词： organochlorine pesticides Arctic Ocean solid-phase extraction solid-phase microextraction

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REE and Sr-Nd isotope characteristics of hydrothermal chimney at Jade area in the Okinawa Trough

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Acta Oceanologica Sinica 2004年第2期23卷 287-296页

作者： LIUYanguang MENGXianwei FUYunxia KeylaboratoryofmarineSedimentologyandEnvironmentgeologyofStateOceanicAdministration Qingdao266061China GeologicalResourceandGeotechnicalEngineeringCooperationofQingdao Qingdao266071China

Hydrothermal chimney is a product of hydrothermal activity on the seabed. Chimney samples dredged from Jade hydrothermal area in Izena depression of the Okinawa Trough, are characterized by relatively enriched light rare earth elements (LREE) and strongly positive Eu anomalies. 87Sr/86Sr and 143.d/144Nd of these samples are exactly between those of seawater and of acidic pumice, averaged at 0.708928 and 0.512292, respectively. These characteristics imply that the main source of hydrothermal sulfide at Jade area is possibly the undersurface acidic rocks. The mineralizing mechanism can be summarized as follows: Large amount of mineralized material would be leached out and LREE-enriched hydrothermal solution would be subsequently produced as a result of thermo-chemical exchange reaction between acidic volcanic rocks and heated seawater that penetrated in advance from upper water mass. The spurting out from the seabed and quickly crystallizing in the seawater of hydrothermal solution are responsible for the formation of Cu-Zn sulfide and barite-amorphous SiO2 minerals that are characterized by enriched LREE and positively strong Eu anomalies.

关键词： hydrothermal chimney rare earth elements Sr and Nd isotopes

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Criteria for defining and recognizing the various orders of sequences in outcrop sequence stratigraphy

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Science china Earth Sciences 2004年第7期47卷 618-629页

作者： WANG Xunlian Faculty of Earth Sciences and Mineral Resources, china university of Geosciences, Beijing 100083. china State Key {3. of Palaeobiology and Stratigraphy, Nanjing Institute of geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, china 1. Faculty of Earth Sciences and Mineral Resources China University of Geosciences 100083 Beijing China 2. State Key laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences 210008 Nanjing China

The regional distribution in different depositional facies belts is here regarded as an important criterion for defining and recognizing the various orders of sequences. The third-order sequence is possibly global in nature, which may be discerned in different depositional facies belts in one continental margin and can be correlated over long distances, sometimes even worldwide. Commonly, correlation of subsequence (fourth-order sequence with time interval of 0.51.5 Ma) is difficult in different facies belts, although some of them may also be worldwide in distribution. A subsequence should be able to discern and correlate within at least one facies belt. The higher-order sequences, including microsequence (fifth-order sequence) and minisequence (sixth-order sequence), are regional or local in distribution. They may reflect the longer and shorter Milankovitch cycles respectively. Sequence and subsequence are usually recognizable in different facies belts, while microsequence and minisequence may be distinguished only in shallow marine deposits, but not in slope and basin facies deposits. A brief discussion is made on the essential conditions for correct identification of sequences, useful methods of study, and problems meriting special attention in outcrop sequence stratigraphy.

关键词： outcrop sequence stratigraphy, facies belt, sequence, subsequence, microsequence, minisequence, meter-scale cyclothem, Milankovitch cycle.

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Buoyancy leads to high productivity of the Changjiang diluted water:a note

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Acta Oceanologica Sinica 2008年第6期27卷 133-140页

作者： CHEN Chen-Tung Arthur Institute of marine geology and Chemistry National Sun Yat-sen University State Key laboratory of marine Environmental Science Xiamen University

Being the mightiest river emptying into the East china Sea （ECS） and the Pacific Ocean, compounded with the large increase of nitrogen and phosphorus input due to anthropogenic activities, the Changjiang River （Yangtze River） has become a dominating source of these nutrients to the estuary. The high nutrient concentrations notwithstanding, however, outside of the estuary the high biological productivity of the Changjiang diluted water （CDW） are most probably fueled mainly by nutrient-rich subsurface waters originating from the upwelled Kuroshio waters. This is because while the buoyancy of the CDW spreads it out on the ECS continen- tal shelf, the CDW entrains subsurface waters along with the nutrients. Nutrients thus supplied are several times more than those supplied by the Changjiang River.

关键词： Changjiang River Changjiang diluted water nutrients Three Gorges Dam productivity buoyancy

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海平面上升及其对上海市可持续发展的影响

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同济大学学报（自然科学版） 2002年第11期30卷 1321-1325页

作者：邓兵范代读同济大学海洋地质教育部重点实验室上海200092

根据已有研究表明,全球海平面在未来的几十年内仍将持续上升。自1990—2100年,全球绝对海平面将上升9～88cm。对于上海市,由于其特殊的地理位置及地理条件,相对海平面变化幅度将远远大于全球海平面变化平均水平,为此就海平面变化对上海... 详细信息

根据已有研究表明,全球海平面在未来的几十年内仍将持续上升。自1990—2100年,全球绝对海平面将上升9～88cm。对于上海市,由于其特殊的地理位置及地理条件,相对海平面变化幅度将远远大于全球海平面变化平均水平,为此就海平面变化对上海市可持续发展的影响作初步探讨。

关键词：海平面上升可持续发展上海经济建设风暴潮盐水入侵海岸侵蚀

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Experimental Examination of Velocity-Models in Estimating Gas Hydrate Saturation in Sediments

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地学前缘 2009年第S1期16卷 224-225页

作者： Gaowei Hu~(1,3.,Yuguang Ye~(2,3.,Jian Zhang~(2,3.,Jiasheng Wang~1 1.Faculty of Earth Sciences,china university of Geosciences(Wuhan),Wuhan 43.074,china. 2.Key {3. of marine Hydrocarbon Resources and Environment Resources,the Ministry of Land and Resources,Qingdao 266071,china 3.Qingdao Institute of marine geology,the Ministry of Land and Resources,Qingdao 266071,china

Elastic velocities(v_p and v_s)have been widely used in estimating gas hydrate saturation in void spaces of *** commonly used models are empirical equations or some physically based models,such as Wyllie’s time average,Effective Medium Theory (EMT),Modified Biot-Gassmann Theory by Lee (BGTL),*** equations or models are selective to distinct *** order to evaluate the app-

关键词： gas hydrates saturation elastic velocities models applicability

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焉耆盆地构造变形与沉积-构造分区

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新疆石油地质 2005年第1期26卷 50-53页

作者：刘新月同济大学海洋地质教育部重点实验室上海200092

焉耆盆地主要发育北西西、北西向两组逆冲断裂。断裂在平面上主要为两种组合形式:“入”字型组合和雁列式组合。构造变形在平面上表现出南北分带、东西分块的特征;断裂在剖面上的组合主要为叠瓦式、背冲式、对冲式和正花状组合。盆地主... 详细信息

焉耆盆地主要发育北西西、北西向两组逆冲断裂。断裂在平面上主要为两种组合形式:“入”字型组合和雁列式组合。构造变形在平面上表现出南北分带、东西分块的特征;断裂在剖面上的组合主要为叠瓦式、背冲式、对冲式和正花状组合。盆地主要发育北西西向的构造带和北西向构造带,北西西向的构造带具左行压扭性,北西向构造带具右行压扭性,起主导变形作用的是压扭作用,构造变形机制为力源来自南南西向的压扭作用。新生界沉积-构造分区具“南隆北坳”的二分性特征,中生界残留盆地沉积-构造分区具“两坳一隆”的三分性特征,中生代原型盆地沉积-构造分区具“一正两负一斜坡”的四分性特征。

关键词：构造变形构造带焉耆盆地沉积变形作用中生代中生界压扭性残留盆地新生界

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不同预处理对沉积物粒度分析结果的影响

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同济大学学报（自然科学版） 2003年第3期31卷 314-318页

作者：王德杰范代读李从先同济大学海洋地质教育部重点实验室上海200092

粒度分析的方法很多 ,无论是传统的方法还是现代的激光粒度分析法 ,都需要对样品做预处理 .不同的预处理所得到的分析结果不同 .取自东海农场泥质潮滩的 4 1个样品 ,经稍做振荡分散、加少量双氧水与盐酸和加大量双氧水与盐酸等三种截然... 详细信息

粒度分析的方法很多 ,无论是传统的方法还是现代的激光粒度分析法 ,都需要对样品做预处理 .不同的预处理所得到的分析结果不同 .取自东海农场泥质潮滩的 4 1个样品 ,经稍做振荡分散、加少量双氧水与盐酸和加大量双氧水与盐酸等三种截然不同的方法预处理后 ,平均粒径减小 ;中值粒径减小 ;标准偏差增大 ,但不影响沉积物的分选等级 ;粒级含量变化 ,但不影响沉积物的命名 .这些变化一方面是沉积物中颗粒有机质和贝壳、生物碎屑类碳酸盐被双氧水和盐酸除去所致。

关键词：潮滩沉积物粒度参数絮凝颗粒

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长江三角洲古土壤有机元素组成及古环境意义

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同济大学学报（自然科学版） 2002年第7期30卷 833-838页

作者：邓兵李从先同济大学海洋地质教育部重点实验室上海200092

以长江三角洲第一古土壤层作为研究对象 ,分析古土壤的有机元素组成和变化 ,并结合微形态及其它分析工作 ,探讨其记录的古环境信息 .结果表明 ,古土壤层中成土程度强弱是影响有机质组成的主要因素 ,随着成土程度的增强 ,土壤m(C) /m (N... 详细信息

以长江三角洲第一古土壤层作为研究对象 ,分析古土壤的有机元素组成和变化 ,并结合微形态及其它分析工作 ,探讨其记录的古环境信息 .结果表明 ,古土壤层中成土程度强弱是影响有机质组成的主要因素 ,随着成土程度的增强 ,土壤m(C) /m (N)的比值也相应增加 ;此外 ,古土壤有机质组分还是土壤暴露时间的反映 ,土壤暴露成土时间越长则越有利于有机组分的降解和转化 ;区域古地理条件差异也是影响古土壤有机元素组成的重要因素 ,干旱透气良好的环境更有利于土壤有机质的分解与转化和增强脱氮作用 ,从而形成m (C) /m (N)的高值 .

关键词：有机元素组成古土壤长江三角洲古环境有机质成土程度成土时间

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SEDIMENT LOAD AND ITS INFLUENCE ON CHANNEL PROCESSES OF SOME LARGE RIVERS IN RUSSIA AND china

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International Journal of Sediment Research 2000年第3期 307-320页

作者： LIU Shuguang,CHALOV R.S, WU Dandan, LI Congxian Postdoctor, Research Fellow, Key laboratory of marine geology,{3., shanghai 2.0092. china & Researcher, State Key laboratory of Estuarine and Coastal Research, shanghai 200062,china Professo

The sediment load, particle size distribution, and ratio between suspended and bed load components. are analyzed for some large rivers in Russia and china. The relationship is shown between the longitudinal changes in sediment load and the directions of vertical river channel deformation, i.e. river incision or sedimentation, which in turn are supported by results of analysis of long-term stage discharge curves. It seems that branching channels are common for the rivers, except where the sediment load is great (such as in the Yellow River). Conditions for forming different types of river channels are defined with the help of diagrams showing the water discharge-slope and slopesediment concentration relationships.

关键词： Sediment load Channel processes River pattern Russia river

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