古海洋学

So the main aim of this thesis is to identify how much the paleo-oceanographic value of carbonate index is in the West Arctic Ocean.

所以，本文通过测定研究区样品的碳酸盐含量，来探讨研究区碳酸盐指标的古海洋学意义。

The tuned Brunhes/Matuyama paleomagnetic polarity reversal agrees well with an age of 0.78 Ma dated previously. The tuned ages for several planktonic foraminifer Mo-events also agree well with published dates, and new ages for some other bin events in the South China Sea are also estimated.

调谐结果显示，1143站190.77m、191个冰期、间冰期的深海沉积记录了5.02Ma的南海古海洋学历史；1143站布容／松山磁性反转事件的年龄为0.78Ma，与前人研究结果一致；15个识别出的浮游有孔虫生物事件年龄部分与已经发表过的年龄相吻合，部分为该生物事件在南沙海区的新年龄。

This paper reviews the historical development of ecological studies on deepsea benthic foraminifera and their use in paleoceanography, with emphasis on new approaches and new technology.

回顾了深海底栖有孔虫生态研究的历史和其在古海洋学中的应用，并强调研究、应用中的新方法、新技术。

Center for Ecology and Conservation Biology is primarily dedicated to education and research in ecology and conservation biology including paleoceanography, ecological economics, sensory biology, behavioral ecology of birds, behavioral ecology and insect sociobiology, evolutionary biology, ichthyology, forest ecology and biogeochemistry, mammalian population genetics, etc.

生态学与保护生物学中心致力于生态学与保护生物学的教学与研究，其研究领域包括古海洋学，生态经济学，感官生物学，鸟类行为生态学，行为生态学和昆虫社会生物学，进化生物学，鱼类学，森林生态学和生物地理化学，哺乳动物遗传学等。

Using the data and samples of the holes DSDP218,ODP717,ODP758 and some others from the northern Indian Ocean,in the paper we make a comprehensive study of them in sedimentology,micropaleontology and paleoceanography and establish a correlation of geological events since 9 million years recorded in proximal fan,distal fan and ridge,respectively.

本文应用DSDP218、ODP717、ODP758及其它来自东北印度洋的资料和样品，通过沉积学、微古生物学与古海洋学的综合研究，实现了9 Ma以来扇区近源相、远源相和岭区沉积记录中的事件对比。

We summarize the study of geochemistry of the Co rich crust, and explain the diffusion of elements in the Co rich crust and the exchange with ambient seawater. Besides, we discuss the effect of phosphatization and substrate rocks on the composition of the Co rich crust. We also introduce the application of stable isotopes (including the stable isotopes of Pb, Nd, and Hf), radioactive...

概述了富钴结壳地球化学的研究成果阐述了富钴结壳中元素的扩散及与周围海水的交换，基岩和磷酸盐化事件对富钴结壳组成的影响分别介绍了稳定同位素(Pb、Nd和Hf的稳定同位素)、放射性同位素(Be、U和Th的放射性同位素)及元素(常量和微量元素、稀土元素)在富钴结壳古海洋学研究上的应用。

Base on above studies, some conclusions were obtained as follows:(1) ore-forming background of the studied ferromanganese crusts are mainly controlled by intensity of Antarctic Bottom Waters and variations of material source;(2) it is confirmed that the ferromanganese crusts are mainly hydrogenetic and their composition are affected by volcanic and continental material simultaneously; there are no obvious phosphatization reconstruction and element reaction occurred in them, so they have important paleoceanological significance;(3) from researches on element occurrence modes in the new-type ferromanganese crusts and the lying sediments, it is proposed that there is no great biological affection on the crusts formation and their composition mainly came from the adsorptive action of the ferromanganese oxides in them;(4) two major types of ore-controlling factors are identified through compilation of ore-controlling factors, which are geological and oceanic factors;(5) considering the long-term variation trends of the crusts composition, combing the U-series and 10Be isotope dating results, it is proposed that the ore-forming processes of ferromanganese crusts in the studied areas can be divided into three major stages (5.6~2.8 Ma, 2.8~2.7 Ma and since 2.7 Ma), and then the activities of AABW since the Late Miocene, changes of input flux coming from volcanic and continental material are confirmed.

通过研究，得出如下结论：(1)研究区铁锰结壳的成矿背景主要受控于南极底流强弱及物源供给的变化；(2)证实铁锰结壳主要为水成成因，同时其物质组成也受一定程度的火山和陆源物质的影响；结壳自形成以来没有遭受到明显的磷酸盐化等成岩后期改造和元素再迁移，具有重要的古海洋学意义；(3)通过新型铁锰结壳及下伏沉积物元素赋存状态的研究，认为生物作用对研究区结壳的形成并没有很大的直接影响，其物质成分主要来自于结壳中铁锰氧化物的吸附作用；(4)在控矿要素的研究中，归纳出了地质与海洋两大类结壳控矿要素；(5)根据结壳成分长周期变化趋势，结合铀系和10Be测年结果，将研究区结壳的形成过程划分为三个主要阶段(5.6~2.8 Ma，2.8~2.7 Ma和2.7 Ma以来)，并确定了晚中新世以来研究区南极底流的活动情况、火山和大陆来源物质输入量的变化。

Deeply study on changes of marine environment, provenance and flux of the sediments during the glaciation-interglaciation climatic cycle is a highlight field of the paleoceanography studies in the Okinawa Trough .

深入揭示冰期/间冰期气候旋回中冲绳海槽沉积物记录的海洋环境、物质来源和通量变化及其对古气候和海平面变化的响应信息，是该区古海洋学研究的前沿课题。

Based on the paleoceanography spatial database, I replanned the paleoceanography databasesystem to figure out the security of the former system. I redivided the system functions anddesigned five function modules: right management module, data import and edit module,calculating year module by standard oxygen isotope curve, data analysis module and spatialanalysis module. The calculating year module adopted the method which compares the oxygenisotope stage borderlines. This method could acquire a more exact result and provide a friendlyinterface to make the consumer operate convenient.

在古海洋空间数据库的基础上重新规划设计了古海洋学数据库系统，解决了原系统数据库的安全性，将系统功能重新进行划分，设计开发了权限管理、数据输入编辑浏览、标准氧同位素定年、数据分析和空间分析等五个系统功能模块，其中标准氧同位素定年模块采用了对比氧同位素期界线的方法，使年代计算结果更加精确，并提供了友好的界面方便用户的操作。

Paleoceanographic and paleoclimatic studies based on the magnetic properties of shelf sediments with high sedimentation rates like those in the Korea Strait are also unlikely to provide a meaningful signature associated with syn-depositional environmental processes.

根据诸如朝鲜海峡这样高沉积速率的陆架沉积物的磁学特征进行古海洋学和古气候研究，也不可能提供有意义的、同沉积作用过程的信息。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。