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1.
转眼间 ,原尊礼先生已经离开我们一周年了。时至今日 ,每当我走进会长办公室 ,都会感到先生仿佛就在屏风对面的办公桌前阅读论文 ,或是在查看地震图 ;而我 ,时而向他请教 ,时而同他谈谈自已的想法 ,这好像就是昨天的事情。原尊礼先生 1 93 2年毕业于东京帝国大学理学部地震系 ,1 944年晋升为教授。 3 0~ 40年代 ,正是包括内陆直下型地震在内的地震灾害频繁发生的时期。在此期间 ,先生将自已的全部精力都投入到地震观测 ,以及地震仪观测技术和倾斜仪、伸缩仪连续观测系统等的研发之中。1 956年研制的。原式电磁地震仪 ( HES) ,在 1 …  相似文献   

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前言     
正值张奕麟先生80寿辰,谨祝他健康长寿,晚年幸福!张奕麟先生在新中国成立不久就加入了地震科学研究的行列,在50多年的地震职业生涯中,他发奋努力、不辞辛苦、不断开拓,在地震仪器的研发、地震台网的建设、地震数据的收集处理以及地震台网技术的推广应用等方面,为我国地震观测技术的发展作出了开创性的贡献,成为这领域中的一位杰出科学家.  相似文献   

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1991年7月,我从地震学校毕业,经彭克中老师推荐,来到我国地震工程学的开拓者和奠基人之一——胡聿贤院士办公室工作,有幸得到了胡聿贤院士和夫人戴月棣先生的教育和培养,使我终生受益.后来,由于我的工作变动,离开了先生的办公室,但先生依然非常关心我的工作、学习和生活.每次见面,先生都会十分详细地询问我的工作情况,鼓励我坚持学习,努力工作.在喜迎胡聿贤院士和戴月棣先生九十寿辰之际,回想和先生在一起相处的时光,敬仰之情油然而起,先生工作和生活的场景历历在目.藉此,将对二老的敬仰之情落于纸际,激励自己努力工作,珍惜时间,热爱生活.  相似文献   

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我和张奕麟先生认识快40年了,原来都在中国地震局地球物理研究所工作,后来张总调到了分析预报中心,后又调到了上海地震局,但还是时常接触和往来.  相似文献   

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张奕麟先生是我国现代地震观测技术领域的一位开拓者.他1928年10月12日出生于上海,1951年以优异的成绩考入中国科学院地球物理研究所任见习员,从此,走上了为地震科学而奋斗的人生历程.  相似文献   

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1949年前中国的两个地震研究系统   总被引:1,自引:0,他引:1  
叙述了1949年前中国从事地震研究工作的2个系统。主要介绍了在蒋丙燃和竺可桢2位先生先后领导下由王应伟和金咏深等所做的工作。着重介绍了《近世地震学》和这一论著的主要观点。第2个是地质系统,介绍了翁文灏先生以及他在《锥指集》中对地震发生和预测方面的各种论点。  相似文献   

7.
在海边出生长大的我非常喜欢夏天的海。遥远的水平线,闪着波光的水面,等距离排列的白浪,令人畅快的海浪回声。我在想象着今年夏天要去哪里,莱先生把我从这一空想中唤回到现实。  相似文献   

8.
来复旦大学进行访问研究的美国加里福尼亚大学圣地亚哥分校语言系美籍华裔教授陈渊泉(Matthew Y·CHEN)先生于1986年12月22日抵达太原进行平遥方言调查.陈渊泉先生是我局办公室主任齐书勤同志在出席第17届国际科学史大会期间结识的朋友.陈先生抵并后,受到齐书勤同志以及山西省地震局有关同志的热情接待,并为他的学术研究提供了方便.在并期间,孙国学局长和苗良田副总工程师会见了他.陈先生还参观了太原基准地震台,游览了晋祠、双塔寺以及平遥双林寺等名胜古迹.陈渊泉先生于1987年1月5日离并赴沪.  相似文献   

9.
我的发言能作为把 2 0 0 0年美国地震学会奖章颁发给亚当·杰旺斯基 ( Adam Dziewons-ki)的授予仪式的一部分 ,并能简要地谈到他的事业和成就 ,对我来说是件令人愉快和很荣幸的事。亚当生于波兰 ,成长于第二次世界大战波兰被占领和后来的冷战变化中。他在波兰接受了所有的正规教育 ,并于 1 965年获克拉科夫矿业冶金学院技术科学博士学位。然而值得注意的是 ,在 1 95 8~ 1 95 9年度国际地球物理年当他参与在越南实施的一个地磁学观测项目时才第一次进入地球物理研究。亚当研究全球地震学的事业始于 60年代后期 ,作为达拉斯得克萨斯大学的博…  相似文献   

10.
第二次世界大战期间,后来的诺贝尔奖获得者Kenneth Arrow担任军事天气预报员.他写道:"我的同事负责长期天气预报,即预测未来一个月的天气情况"."我们的统计人员对这些预报进行了验证,结果显示预报与全凭运气猜测没有什么区别.就连预报人员自己都信服了,并主动要求停止预报.他们大概是这样答复的:‘司令官明明知道预报没什么用.  相似文献   

11.
Abstract

A simple method is used to study the response of runoff in the Sahel to climate change. The statistical characteristics of rainfall are calculated over the western part of the Sahel for the period 1961–1990, using the BADOPLU network. Daily rainfall is simulated using a Markov process with Weibull distribution for rainfall depths. Runoff is modelled using a conceptual SCS model and the curve numbers are calculated for West Africa. Climate change is provided by simulations using the Arpège GCM (Scenario A1B), and a perturbation method is used on the parameters which describe the rainfall. Changes in rainfall are assumed to occur through increases in frequency, not intensity. Using Arpège, runoff is mainly found to increase, in depth and in number of events, by the end of the 21st century. Changes in evaporation and land use are not included in the analysis. The impact of this 21st century potential climate change (rainfall) on the runoff is found to be of the same magnitude as the impact of changes in land use.  相似文献   

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Abstract

In the Southwestern intermountain and high plains areas, precipitation is seasonal, with the major part of the rainfall occurring in the summer. Most winter precipitation occurs as low-intensity rain or snow along slow-moving cold fronts. Most summer precipitation occurs as short-duration, high-intensity thunderstorms from purely convective buildup or from convective cells developing along a weak fast-moving cold front. Almost all runoff occurs from the summer convective storms.

Since runoff-producing precipitation is of primary interest at the Southwest Watershed Research Center, Agricultural Research Service, Tucson, Arizona, the convective storms have been most thoroughly analyzed. Duration, intensity, areal extent, movement, character, and return frequencies for varying volumes and intensities of these convective storms are analyzed from records from dense networks of recording rain gages in four study areas in Arizona and New Mexico. The primary study areas are the 58-square-mile Walnut Gulch Experimental Watershed at Tombstone, Arizona, and the 67-squaremile Alamogordo Creek Watershed near Santa Rosa, New Mexico. Three “record” storms of differing character occurring in 1960 and 1961 on Alamogordo Creek Watershed and one “record” storm in 1961 on the Wlanut Gulch Watershed are analyzed and compared in detail.  相似文献   

16.
Abstract

A new method is presented to generate stationary multi-site hydrological time series. The proposed method can handle flexible time-step length, and it can be applied to both continuous and intermittent input series. The algorithm is a departure from standard decomposition models and the Box-Jenkins approach. It relies instead on the recent advances in statistical science that deal with generation of correlated random variables with arbitrary statistical distribution functions. The proposed method has been tested on 11 historic weekly input series, of which the first seven contain flow data and the last four have precipitation data. The article contains an extensive review of the results.

Editor D. Koutsoyiannis

Citation Ilich, N., 2014. An effective three-step algorithm for multi-site generation of stochastic weekly hydrological time series. Hydrological Sciences Journal, 59 (1), 85–98.  相似文献   

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SUMMARY

Basing their studies on an extended Reynolds principle of similarity, the authors present in this paper a thorough theoretical investigation of the turbulent flow in pipes.

Making appropriate assumptions regarding the distribution of the turbulent apparent viscosity over the entire pipe diameter, the well-known discharge formulas, i. e. the resistance laws, of Prandtl-V. Kármán for the hydraulically smooth and the hydraulically rough region, and of Colebrook for the transition region—the accuracy of these being well established by measurements—can be clearly shown to be correct.

Thus it is also possible to determine the velocity distribution in the region near the wall for the hydraulically smooth region and the transition region, as well as for the hydraulically rough region.

The concept, that the flow with a fully developed roughness effect begins when the laminar boundary layer at the wall disappears can be seen to be in close agreement with the asssumptions made. The limits which were established for the hydraulically rough region and the transition region correspond well with the curve plotted by PRANDTL and the boundary curve of Rouse.  相似文献   

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