天山北麓蓄水构造模式与水循环特征

从控制地下水形成的地形地貌、地质构造出发，探讨了新疆天山北麓串珠式、隐伏串珠式、隆起间歇式、连续式和山间谷地式5种蓄水构造模式．提出大气降水、地表水和地下水（土壤水）相互转化一次循环、两次循环和多次循环类型，在此基础上研究水资源开发利用不同方式，为指导天山北麓水资源合理开发利用与生态环境保护提供技术依据。     

济宁市耕地动态变化及驱动因素分析

根据济宁市耕地历年总量及人均耕地数量变化情况可以看出，55年来耕地数量总体呈明显波动减少趋势，各县（市、区）的变化也存在差异。定性与定量相结合的分析结果表明，济宁市耕地动态变化的驱动因素主要为经济发展对耕地占用的巨大需求和比较经济利益对耕地占用的巨大压力。为遏制耕地数量减少，对耕地数量快速减少区、平稳减少区和增加区采取的措施有所区别。     

Simulation of double cold cores of the 35°N section in the YellowSea with a wave-tide-circulation coupled model

Based on the MASNUM wave-tide-circulation coupled numerical model, the temperature structure along 35°N in the Yellow Sea was simulated and compared with the observations. One of the notable features of the temperature structure along 35°N section is the double cold cores phenomena during spring and summer. The double cold cores refer to the two cold water centers located near 122°E and 125°E from the depth of 30m to bottom. The formation, maintenance and disappearance of the double cold cores are discussed. At least two reasons make the temperature in the center (near 123°E) of the section higher than that near the west and east shores in winter. One reason is that the water there is deeper than the west and east sides so its heat content is higher. The other is invasion of the warm water brought by the Yellow Sea Warm Current (YSWC) during winter. This temperature pattern of the lower layer (from 30m to bottom) is maintained through spring and summer when the upper layer (0 to 30m) is heated and s     

基于SuperMap平台构建统一CIM数字底盘的应用分析

基于SuperMap GIS平台实现BIM和GIS融合,构建全时空的统一CIM数字底盘,通过CIM数字底盘的应用实现全流程、全自动规划审批,提升智慧审批效率.随着三维立体时空数据不断丰富,全空间二三维数字化底盘技术会愈加成熟,CIM数字底盘的应用将成为助力数字孪生城市、新型智慧城市创新发展的催化剂.     

相控阵天线姿态测量数据处理方法分析

针对相控阵天线姿态测量工作,本文提出运用最小二乘原理对相控阵天线平面进行拟合,求出天线的法线指向和天线倾角的计算方法.试验结果表明:该计算方法简单快捷,能够满足相控阵天线姿态测量工作的需求.     

并联式TBCC发动机排气系统性能数值模拟

针对一个并联式涡轮基组合循环(Turbine Based Combined Cycle, TBCC)发动机排气系统的气动方案,对其在整个飞行包线范围内典型工作点上的流场进行了数值模拟研究,获得了飞行包线范围内排气系统相应的推力系数、升力、俯仰力矩随飞行马赫数的变化关系。计算结果显示,在整个飞行包线范围内,排气系统的轴向推力系数随着飞行马赫数先减小后增大,在跨声速飞行时降到最低 Ma=0.9,涡喷不加力时为0.562,加力时0.662),在设计点附近达到最大;升力和俯仰力矩性能在亚声速及跨声速飞行时较差,在超声速飞行时随着飞行马赫数增加逐渐好转。表明排气系统在跨声速飞行范围内工作时应采取措施以改善其性能。      

ENSO indices and analyses

New ENSO indices were developed and the spatial variability and temporal evolution of ENSO were analyzed based on the new indices and modeling experiments, as well as multiple data resources. The new indices, after being defined, were validated with their good diagnostic characteristics and correlation with wind and SST. In the analysis after the definition and validation of the new indices, ENSO feedbacks from wind, heat fluxes, and precipitation were spatially and temporally examined in order to understand ENSO variability and evolution with some emphasized points such as the interaction among the feedbacks, the role of westerly wind bursts and the transformation between zonal and meridional circulations in an ENSO cycle, and the typical pattern of modern ENSO.     

“20110730”辽宁大暴雨过程分析

利用常规气象资料、卫星云图、雷达回波、自动气象站资料和NCEP(1°×1°)再分析资料,对2011年7月30日辽宁短时大暴雨过程进行分析。结果表明：暴雨期间500 hPa高空槽与850 hPa切变线形成前倾形势,前倾槽为大暴雨的产生提供了有利的不稳定条件。此次暴雨过程的中尺度分析表明,降水时空变率大;TBB等值线密集区和上冲云顶的位置对暴雨落区有较好的指示意义;强降水时雷达回波强度达到65 dBz,且有逆风区和正负速度对出现,中小尺度强对流特征明显;地面等温线密集带与地面切变线（或中尺度低压）的共同作用触发中尺度雨团,降水强度陡增。通过涡度方程诊断切变线形成动力机制得出,当正涡度变率发展加强时,切变线向正涡度变率大值区方向移动,产生辐合动力抬升条件;散度项对低层涡度变率的贡献最大,强辐合是低层切变线生成的动力机制之一。     

东天山伊吾地区侵入岩岩石地球化学特征及构造环境

通过对东天山伊吾县解放沟、四道白杨沟、马依当等区段出露岩体的调查研究,查明了其产出形态、岩石类型、岩石组合特征、侵入期次及地球化学特征。岩石类型主要为闪长岩、闪长玢岩、石英闪长岩、花岗岩、斜长花岗斑岩、花岗斑岩等。本文将从岩石学特征、岩石地球化学特征等方面进行系统研究,分析并探讨该区侵入岩的成因及构造环境。     

东天山伊吾地区早石炭世火山岩地球化学特征及其构造意义

通过对东天山伊吾马依当地区早石炭世火山岩分布、成因与构造环境关系的调查研究,查明了该时期火山岩相从次火山相-爆发相-喷溢相-火山沉积相的分布特点;火山岩组合主要为一套岛弧相的中基性-中酸性火山碎屑岩、火山熔岩及火山沉积岩.结合该区火山岩地球化学特征及沉积岩特征综合研究认为:研究区早石炭世早期处于大陆裂谷向大洋裂谷转变的...