Rheological Properties and Incipient Motion of Cohesive Sediment in the Haine Estuary of China

The Haihe cohesive sediment, which is typical in China, is studied systematically for its basic physical and incipient motion properties. Following the requirements of dredging works in the Haihe Estuary, cohesive sediment samples were taken from three locations. Laboratory experiments were conducted to delermine the rheological properties of these samples and to examine the incipient motion of the cohesive sediment. it is found that the cohesive sediment has an obvious yield stress τb, which increases with the mud density in a manner of an exponential function, and so does the viscosity parameter η. The cohesive sediment behaves like a Bingham fluid when its density is below 1. 38 - 1 .40 g/cm3 , and when denser than these values, it may become a power-law fluid. The incipient motion experiment also revealed that the incipient velocity of the cohesive sediment increases with the density in an exponential manner. Therefore, the incipient motion is primarily related to the density, which is different f     

Numerical Calculation Methods for Wavemaking Response Induced by Explosion in Harbour

Using the axial symmetry results of marker and cell (MAC) method as initial value in this paper, two numerical calculating methods are presented for the late wavemaking response induced by explosion in harbour. One of the methods is the superposition method of the vibration mode based on fluid slosh in container. Another one is the joining method of the MAC results with the shallow wave theory calculation in time domain. As a practical example, it is conducted to the numerical calculation about 1000 ton TNT equivalent explosion within touch of water surface. The results show that it can be rationally described with the methods to the wavemaking progress and character. The numerical results are identical with the observed scene on the spot experiment. The methods are simple and applicable in the engineering design.     

中国海洋湖沼学会成立经过及历届代表大会简介

BriefIntroductionoftheChineseSocietyforOceanologyandLimnology今年，是中国海洋湖语学会成立45周年。中国海洋湖沼学会自1950年1月成立以来，经过老一辈科学家和广大中青年科技工作者的共同努力，目前已发展成拥有6500余名会员，包括15个分科学会和9个省市分会的学术团体。45年来，中国海洋湖沼学会在团结、组织广大会员加强本学科的科学研究，提高学术水平上，做了大量的工作，为推动我国海洋科学、湖沼科学事业的发展，做出了重大的贡献，在国内外享有较高的声誉。中国海洋湖沼学会成立的经过及历届代表大会的情况介绍如下。1历届…     

原生动物学家宋微波

宋微波，男，江苏难宁人，1958年12月生，汉族。1982年毕业于山东海洋学院水产系，1985年获硕士学位。于1986年赴联邦德国波恩大学生物系学习，1988年12月获理学博士学位。1992年12月晋升为青岛海洋大学教授。1993年10月批准为博士生导师。现为中国原生动物学会理事，国家教委开放实验室主任，国家自然科学基金委员会动物学科评委。自1982年起从事海洋、极地、淡水及土壤中各类自由生及共栖／寄生性纤毛虫原生动物研究，主要方向：生态学，区系分类学及细胞发生学。1986年以来共发表论文54篇，其中第一或唯一作者44篇，包括国际学术刊物17篇…     

Optimum Design for Offshore Platform Structural Reliability

In this paper, the main problems concerning reliability design of offshore platform structure are described and the general steps for the use of Safety Coefficient Method are presented.     

2006年“中国气候观测系统实施方案”设计工作进展

“中国气候观测系统实施方案”初稿先后在2006年2月28日、4月5～6日分别通过了由12位院士组成的高层次专家评审组、国务院各部委（科技部、财政部、外交部、发改委等）组成的国家气候委员会与全球气候观测系统（GCOS）中国委员会审议，得到国务院各部委领导及著名专家、学者的高度评价，目前该方案已经得到各部委的认可与支持。2006年在以下几个方面取得进展：     

青岛市地震前兆观测系统的映震能力

概述了青岛市地震前兆观测系统，结合1992年以来青岛周边地区发生的4次Ms≥5．0地震分析了前兆观测的映震能力，以期对青岛市地震监测预报提供参考。     

我国登陆台风灾害的监测及预报技术研究

(1)涡合并是下一届国际涡动力学会议的第一优先专题，也是登陆台风维持的一种重要机制，目前国际上有关该主题的研究很少，本项目获得了这方面的一些成果。     

Multi-collector ICP-MS Analysis of Pb Isotope Ratios in Rocks: Data, Procedure and Caution

The authors measured Pb isotope compositions of seven USGS rock reference standards, i.e. AGV-1, AGV-2, BHVO-1, BHVO-2, BCR-2, BER-1/1 and W-2, together with NBS 981 using a micromass isoprobe multi-collector inductively-coupled plasma mass spectrometer (MC-ICP-MS) at the University of Queensland. 203Tl-205Tl isotopes were used as an internal standard to correct for mass-dependant isotopic fractionation. The results for both NBS 981 and USGS rock standards AGV-1 and BHVO-1 are comparable to or better than double- and triple-spike TIMS (thermal ionization mass spectrometry) data in precision. The data for BHVO-2 and, to a lesser extent, AGV-2 and BCR-2 are reproducibly higher for 206Pb/204Pb, 207Pb/204Pb and 208Pb/204Pb than double-spike TIMS data in the literature. The authors also obtained the Pb isotope data for BIR-1/1 and W-2, which may be used as reference values in future studies. It is found that linear correction for Pb isotopic fractionation is adequate with the results identical to those corre     

台海地区的地壳运动与变形

利用福建沿海GPS网和台湾-吕宋GPS网站速度数据和两个网数据处理中共用的IGS永久站数据，实现了两个GPS网参考框架和速度场的统一．分析台海地区的速度场发现，福建沿海、台湾海峡与台湾岛北部地壳的水平运动完全一致，运动方向约为东偏南26.0，运动速率约为39 mm/a；台湾岛东部的海岸山脉地区发生了相反变化，运动方向为北偏西30.0，运动速率约为33.3 mm/a；在台湾岛的南端存在南偏西50.0方向的运动，运动速率约为13 mm/a．若以福建沿海的几何中心为参考基准，台湾岛存在一致的(岛的北端除外)北西向运动，方向北偏西约50.0，东海岸的速率最大为61 mm/a，向西逐渐减小．应变场分析表明，台海地区存在统一的应变场，主压应变方向为北西48.0，主张应变方向为北东42.0．主压应变速率，台湾岛的东海岸为3.43610－7/a，向西逐渐减小，到福建沿海减小到1.86110－8/a．菲律宾海板块在台湾岛东部与欧亚板块的碰撞俯冲是台海地区地壳运动、变形和发生大地震的主要驱动力．本区的主压应力方向约为北西55.0．