第一届国际环境和工程地球物理会议在武汉召开

2004年6月7日至6月11日,第一届《国际环境和工程地球物理会议》在武汉中国地质大学(武汉)隆重召开并取得圆满成功．会议由中国地质大学(武汉)和长江水利委员会联合主办,中国地球物理学会、国家自然科学基金委员会地学部、美国环境与工程地球物理学会和长江大学协办．大会主席为中国地质大学王家映教授,执行主席为来自美国的XIA Jiang—hai博士和国家自然科学基金委的于晟教授．大会名誉主席为中国地球物理学会名誉理事长刘光鼎院士．这是近年来在中国召开的规模最大、规格最高的国际环境和工程地球物理学术会议．来自美国、加拿大、澳大利亚、瑞士、法国、日本、韩国、瑞典、泰国和中国及香港、台湾等共16个国家和地区的160余名科学家和学者出席了会议,并向大会提交了110多篇论文和摘要．     

第12届世界湖泊大会在印度召开

第12届世界湖泊大会于2007年10月28日-11月2日在印度的捷普召开.来自60个国家的近1000名湖泊科技与管理工作者参加了大会.印度总统Pratibha Patil、印度环境与森林部部长、国际湖泊环境委员会主席、我国国家环保总局副局长王玉庆等出席了会议.大会报告以及专题报告涉及的主题有湖泊流域综合管理、湖泊富营养化逆转、湖泊生态过程、湖泊保护与修复、综合水资源管理、生物多样性、渔业资源、人类影响与土地使用、湖泊湿地与气候变化、水质调查与检测、富营     

《地球物理学报》编委会议纪要(1990年2月28日)

中国地球物理学会2月1日以(1990)球会字第05号文予《地球物理学报》编委会:傅承义教授提出由于年岁已高,要求辞去地球物理学报主编职务,并推荐刘光鼎教授继任。经中国地球物理学会第四届第六次常务理事会讨论决定,同意傅老辞去学报主编的要求,任傅老为名誉主编;聘刘光鼎教授任主编;并授权刘光鼎教授根据学会跨部门、跨行业的特点和工作需要,遵照会章尽快完成编委会的组建。为此,1990年2月28日在中国科学院地球物理研究所110会议室召开了《地球物理学报》编委会议。出席会议的有:主编刘光鼎,副主编黄绪德、钱绍新,编委(以姓氏笔划为序):王仁、牛毓荃、刘振     

国际大地测量与地球物理学联合会（IUGG）第23届大会6月30日~7月11日在札幌举行ca

国际大地测量与地球物理学联合会 (IUGG)第 2 3届大会 2 0 0 3年 6月 2 9日～ 7月 11日在日本札幌举行 .大会以“行星地球的现状”为主题 ,强调对地球系统过程的多学科综合研究和新技术在地球物理科学中的应用 .IUGG所属的国际大地测量协会 (IAG)、国际地磁学与高空物理学协会 (IAGA)、国际水文科学协会 (IAHS)、国际气象学与大气科学协会 (IAMAS)、国际海洋物理科学协会 (IAPSO)、国际地震学与地球内部物理学协会 (IASPEI)、国际火山学与地球内部化学协会 (IAVCEI)等组织了相应的学术交流活动 .大会安排了 4个主题报告 (U…     

第23届IASPEI大会及其执行局会议概述

本文较详细地介绍了1985年8月19—30日在日本东京举行的第23届国际地震与地球内部物理学协会(IASPEI)大会及其执行局会议概况,内容包括:本次大会的一般概况;学术讨论会主题及评述;IASPEI 秘书长关于1983—1984年的工作报告要点;大会作出的七项决议全文,IASPEI 今后几年的会议预告,并附带介绍了1985年8月2—3日在美国檀香山召开的国际大地测量与地球物理协会(IUGG)执行局会议的简况及共与 IASPEI 有关的部分内容。     

国际会议消息

《湖泊科学》网站(www.jlakes.org)目前提供了2006年5-12月召开的有关国际会议信息:1)第五届世界水大会:可持续的水管理实践;2)第一届干旱半干旱地区的水、生态系统和可持续发展国际会议;3)第十届面源污染和流域可持续管理国际专题研讨会;4)第二十二届土壤、沉积物和水国际会议;5)第三届环境工程和管理国际会议;6)第三届跨区域水管理国际会议;7)第一届环境毒理学国际会议(Environmental Toxicology 2006);8)第三十六届环境系统国际会议;9)第八届水污染模拟、监测和管理国际会议(Water Pol-     

《地球物理学报》编委会议

(2 0 0 3年10月2 3日)在中国地球物理学会第19届年会期间,《地球物理学报》编委会议于10月2 3日在古都南京市召开.会议由主编刘光鼎院士主持.出席编委会议的编委及有关同志有:陈、朱日祥、万有林、程业勋、刘启元、王家映、黄忠贤、臧绍先、李舟波、郑天愉、许忠淮、郭爱缨、     

国际生态学1996年夏季会议将在丹麦哥本哈根举行

生态模拟(Ecological Modelling)、生态工程(Ecological Engineering)、生态系统卫生(Ecosystem Health)和生态经济(Ecological Economics)等四个国际生态学杂志及相应的协会联合召开1996年夏季会议。会议将于1996年8月19～23日在丹麦哥本哈根举行。欢迎各国生态学家投稿和参加会议。论文将在有关杂志上发表。     

国际地震学与地球内部物理学协会1980～1983年的组织概况

据《国际大地测量与地球物理联合会记事报》1980年第139期和140期的综合报道,在国际大地测量与地球物理联合会于1979年12月在澳大利亚堪培拉举行的全体大会期间,通过选举产生了国际地震学与地球内部物理学协会从1980年到1983年期间主持事务的办公署和执行委员会的成员名单:美国加州大学地质和地球物理系教授博尔特(B.A.Bolt)任办公署署长;     

热烈庆贺郭宗汾教授八十寿辰

20 0 2年 9月 9日在北京召开了“理论与应用地球物理研讨会” ,暨庆贺国际著名地球物理学家郭宗汾教授八十寿辰的庆贺活动 .来自石油、地质系统、中国科学院、高校及中国地震局等部门的 1 1 2位代表与会祝贺 .郭宗汾教授的儿子郭大薇与儿媳郭恳谙及其学生代表陈昆华、邓玉琼教授专程从美国到京 ,并分别作了大会发言 .会议由陈运泰院士主持 ,孙枢院士致贺词 .到会的院士还有 :李庆忠、赵文津、刘光鼎、许厚泽、滕吉文、姚振兴、曾融生、陈、许绍燮 .会议共收到论文 2 7篇 ,大会报告 7篇 .郭宗汾 (ＪｏｈｎＴｓｕｎｇ ＦｅｎＫｕｏ)教授 1 9…     

Changes in sediment transport in the Kuye River in the Loess Plateau in China

In this paper, the changes in sediment transport over 51 years from 1955 to 2006 in the Kuye River in the Loess Plateau in China are assessed. Key factors affecting sediment yield and sediment transport, such as precipitation depth, discharge, and human activities are studied. To investigate the changes in sediment yield in this watershed, a trend analysis on sediment concentration, precipitation depth, and discharge is conducted. Precipitation depths at 2 Climate Stations （CSs）, as well as discharge and sediment transport at 3 Gauging Stations （GSs） are used to assess the features of sediment transport in the Kuye River. The rtmoff modulus （defined as the annual average discharge per unit area, L/（s·km^2）） and the sediment transport modulus （defined as the annual suspended sediment transport per unit area, t/（yr km^2）） are introduced in this study to assess the changes in runoff and sediment yield for this watershed. The results show that the highest average monthly discharge during the study period in the Kuye River is 66.23 m^3/s in August with an average monthly sediment concentration of 88.9 kg/m^3. However, the highest average monthly sediment concentration during the study period in the Kuye River is 125.34 kg/m^3 and occurs in July, which has an average discharge of 42.6 m^3/s that is much less than the average monthly discharge in August. It is found that both the runoff modulus and sediment transport modulus at Wenjiachuan GS on the Kuye River has a clear downward trend. During the summer season from July to August, the sediment transport modulus at Wenjiachuan GS is much higher than those at Toudaoguai and Longmen GSs on the Yellow River. The easily erodible loess in the Kuye River watershed and the sparse vegetation are responsible for the extremely high sediment yield from the Kuye River watershed. The analyses of the grain size distribution of suspended load in the Kuye River are presented. The average monthly median grain size of suspended load in the Kuye River is largest in February and then decreases until June. In July, the average monthly median grain size of suspended load approaches another peak and decreases until September. Then, the median grain size of suspended load starts to increase until February of the following year. However, the average monthly median grain size of suspended load in the Yellow River at Toudaoguai and Longmen GSs is the smallest between early summer and late fall The median grain size in the Yellow River starts to increase in November and approaches the largest size in January.     

TritiogenicHe in groundwater in Takaoka

³He/⁴He ratios up to 3.5 times the ratio of atmospheric He were found in groundwater samples. The³He enrichment can be attributed to radiogenic³He produced by in-situ beta-decay of³H. This shows that tritiogenic³He is accumulating in confined waters. From tritiogenic³He and³H concentrations, ages of groundwaters can be calculated. Detection of tritiogenic³He gives a tool to trace a tritium contamination which occurred in the past and cannot be assessed only by the³H counting method.     

Variations in trace gas concentrations in different environments in India

Observations of trace gases (SO₂, NH₃, NO₂ and O₃) were made during the period 1981 to 1984 at 6 different locations representative of urban industrial, urban, nonurban, thermal power plant and marine environment. Diurnal variations of the trace gases were studied in an urban environment. Except in the urban industrial environment, the concentration of NH₃ was found in the range of background values. Also, the average concentrations of NO₂ and O₃ at the different environments were in the order of background values. However, the concentrations of SO₂ were substantially higher by about 7 times, in urban industrial and thermal power plant environments. The diurnal variations of SO₂, NH₃ and NO₂ showed anitphase relationship with surface temperature at the urban environment station which is relatively free of industrial pollution. Discussion is centred on trace gas variations in different environments in India together with the values reported for various countries in the world.     

Projected changes in flood indices in selected catchments in Poland in the 21st century

The aim of this study is to estimate likely changes in flood indices under a future climate and to assess the uncertainty in these estimates for selected catchments in Poland. Precipitation and temperature time series from climate simulations from the EURO-CORDEX initiative for the periods 1971–2000, 2021–2050 and 2071–2100 following the RCP4.5 and RCP8.5 emission scenarios have been used to produce hydrological simulations based on the HBV hydrological model. As the climate model outputs for Poland are highly biased, post processing in the form of bias correction was first performed so that the climate time series could be applied in hydrological simulations at a catchment-scale. The results indicate that bias correction significantly improves flow simulations and estimated flood indices based on comparisons with simulations from observed climate data for the control period. The estimated changes in the mean annual flood and in flood quantiles under a future climate indicate a large spread in the estimates both within and between the catchments. An ANOVA analysis was used to assess the relative contributions of the 2 emission scenarios, the 7 climate models and the 4 bias correction methods to the total spread in the projected changes in extreme river flow indices for each catchment. The analysis indicates that the differences between climate models generally make the largest contribution to the spread in the ensemble of the three factors considered. The results for bias corrected data show small differences between the four bias correction methods considered, and, in contrast with the results for uncorrected simulations, project increases in flood indices for most catchments under a future climate.     

Copper in natural waters in Transbaikalia

Cu concentrations in surface (river and lake) and subsurface waters are determined. The geographic pattern of Cu distribution in natural water is identified. This pattern is controlled by the difference between its concentrations in drained rocks and soils and the geochemical redox conditions of its migration. Territories with low, medium, and elevated Cu concentrations in natural waters are identified. The concentrations of Cu in natural waters of the region are found to be generally lower than the Clarke values.     

Changes in thermal extremes in Poland

Changes in thermal extremes of the climate of Poland in 1951–2010 are examined. Warm extremes have become more frequent, while cold extremes have become less frequent. In the warming climate of Poland, the increase in the number of extremely warm days in a year and the decrease in the number of extremely cold days in a year have been observed. Also the increase of the maximum number of consecutive hot days in a year and the decrease of the maximum number of consecutive very cold and extremely cold days in a year have been observed. However, the trends are not of ubiquitous statistic significance, as the natural variability is strong.     

Hydrological changes in the Ganges system in Bangladesh in the post-Farakka period

Abstract

The basin area of the Ganges River in Bangladesh is extremely dependent on a regular water supply from upstream to meet requirements for agriculture, fisheries, navigation, salinity control, and domestic and industrial sectors. In 1975, India commissioned a barrage on the Ganges River at Farakka to divert a significant portion of the dry season flow in order to make the Calcutta Port navigable. Statistical analyses of discharge and water level data have been carried out to determine if significant changes have occurred in the hydrology of the Ganges system in Bangladesh in the post-Farakka period. Siltation of the Gorai River (an offtake of the Ganges River) has also been examined using the stage-discharge relationship and regression analysis. The analyses show that the diversion has caused considerable hydrological changes in the Ganges system in Bangladesh. The water supply in the dry season has been reduced substantially, while siltation of the Gorai River has increased significantly.