Calculation of circulation in the South China Sea during summer of 2000 by the modified inverse method

On the basis of hydrographic data obtained in August 2000 cruise, the circulation in the South China Sea (SCS) is computed by the modified inverse method in combination with SSH data from TOPEX/ERS-2 analysis. For study of the dynamical mechanism, which causes the pattern of summer circulation in the SCS, the diagnostic model (Yuan et al. 1982. Acta Oceanologica Sinica,4(1):1-11; Yuan and Su. 1992. Numerical Computation of Physical Oceanography.474-542) is used to simulate numerically the summer circulation in the SCS. The following results     

Influence of Topography and Large-scale Forcing on the Occurrence of Katabatic Flow Jumps in Antarctica： Idealized Simulations

The Regional Atmospheric Modeling System （RAMS）, which is a non-hydrostatic numerical model, has been used to investigate the impact of terrain shape and large-scale forcing on the Antarctic surface-wind regime, focusing on their roles in establishing favorable flow conditions for the formation of katabatic flow jumps. A series of quasi-2D numerical simulations were conducted over idealized slopes representing the slopes of Antarctica during austral winter conditions. Results indicate that the steepness and variations of the underlying slope play a role in the evolution of near-surface flows and thus the formation of katabatic flow jumps. However, large-scale forcing has a more noticeable effect on the occurrence of this small-scale phenomenon by establishing essential upstream and downstream flow conditions, including the upstream supercritical flow, the less stably stratified or unstable layer above the cold katabatic layer, as well as the cold-air pool located near the foot of the slope through an interaction with the underlying topography. Thus, the areas with steep and abrupt change in slopes, e.g. near the coastal areas of the eastern Antarctic, are preferred locations for the occurrence of katabatic flow jumps, especially under supporting synoptic conditions.     

Application of Multifocusing Method for an Irregular Topography Imaging

INTRODUCTION Astackofrecordedseismicdatabecomesoneof themainstepsinmoderndataprocessingwhenmulti foldacquisitionsystemsaretheleadingmethodof collectingseismicdata.Inthestackprocedure,the crucialoperationistimecorrection.Anaccurateand reliabletraveltimemoveoutcorrectionformulaisnec essaryinordertodostackproperly(Gelchinskyet al.,1999a).Themostfamousmoveoutexpressionis thenormalanddipmoveout(NMO/DMO)designed todescribethetraveltimeofprimaryreflectionsof common midpoint(CMP)data.Beingdes…     

军事地质环境的研究内涵与关键技术

为加强我国现代军事地质研究和我军战场地质环境建设保障体系,采用地质环境研究思维分析陆战场空间的结构特征、空间变化规律、物理化学界面和动态变化趋势,构建军事地质环境研究内涵与关键技术。提出军事地质环境包括作战环境和地质环境,研究要素分别为战场空间结构、军事地理环境、军事行动环境和地质体时空环境、地质体现状环境、地质体应用环境。军事地质环境研究内涵是将作战环境和地质环境整合分析研究,从宏观上把握战场空间的结构特征和军事地理与军事行动环境背景,据此确定地质需求内容和军事地质应用主题;通过研究地质体背景条件、物理化学状态、空间分布规律及动态变化趋势等,分析一定区域地质环境的质量、容载和反馈能力,为军事作战应用地质条件提供利弊研判和优劣预测。适宜军事地质环境数据获取和信息表达的关键技术包括民用地质数据军事应用改化、境内快速立体调查、境外遥感地质解译和按需定制专题图。概括认为当前我国军事地质的主要探索研究方向有地质环境动态监测下的作战环境质量评估与治理、地质客观规律的普适性与特殊薄弱点军事应用、隐匿军事目标靶区的地质环境定位预测、地质模型的军事地质环境信息表达。     

以实际的军事形势确定战略决策 以变化的军事局势确定战略方针 以显现的军事态势确定战略部署 黎平以红军长征中做出向贵州转兵战略决策重要会议而使其地名永远誉刻在中国革命历史丰碑上

黎平,位于贵州省境内,地处黔、湘、桂三省交界处。唐代,黎平为龙标县治地,称五脑寨,始兴土司。元世祖至元二十年(1283年),改称黎平。北宋巡抚副使龙禹官和丞相司马光上书神宗皇帝:"蛮地古州(驻地今黎平罗里)山珍     

中国海洋战略构想总论（2）

2.我国的海洋经济形势 我国的海洋经济正处于一个快速发展的黄金时期。1995年,全国主要海洋产业总产值比1990年增长4倍多,海洋产业增加值为全国国内生产总值的2％左右,以海洋经济为依托的沿海市、县的国内生产总值占整个沿海地区(即沿海省、自治区、直辖市)国内生产总值的     

战役系统军事专题图的研究

文中在从事城市军事系列图和战役方向系列图课题研究实践的基础上,提出了全新的战役系统军事专题图的基本概念和构图模式,并重点讨论了战役系统军事专题图的内容体系、图式规律以及在地图数据库支持下的专题地图生成系统。     

论军事旅游资源的开发利用

本文论述了军事旅游资源开发利用的重要意义、原则、分类及其特征和发展方向。认为军事旅游资源丰富多彩，只要开发利用得当，其旅游市场前景十分广阔。目前我国军事旅游资源利用尚处于初始阶段，有着巨大的发展潜力，值得旅游部门深化挖掘。     

Marine Active Fault Exploration and Paleoearthquake Research

Marine active fault exploration and Paleoearthquake research are still a gap in China.The paper gives a review on major research methods and new progress made abroad,including submarine survey boat.seismic reflection and acoustic reflection.Through detailed studies of offset history of 10 ka to 30ka,it is possible to determine paleoearthquake recurrent intervals and elapsed time since last major earthquake.It is suggested that active fault exploration can be carried out by acoustic exploring method in large earthquake region of Bohai Sea.Paleoearthquake activity history can be revealed and earthquake risk in the future can be predicted.