碳酸盐岩表牛岩溶与埋藏溶蚀比较——以塔北和塔中地区为例     

钱一雄 Conxita Taberner邹森林  尤东华王蓉英 《海相油气地质》2007,12(2):1-7

表生岩溶与埋藏溶蚀是碳酸盐岩储层发育的最重要成岩作用，两者受岩石等内在因素的影响基本相同，但所受的外部主控因素差异显著。表生岩溶受构造不整合面、古构造等影响较大；埋藏溶蚀主要受断裂与深部流体控制。表生岩溶主要表现为垂向分带性明显的复杂孔洞缝网络结构，而埋藏溶蚀主要呈受断裂—裂隙控制的“V”形洞穴样式或与断裂有关的阶梯状分布。表生岩溶发育一些标型特征，如钙质壳，古土壤，铝土矿，淡红色方解石晶体，溶蚀沟、坑、天坑，新月形状、悬垂和纤维状渗滤砂或胶结物，岩溶角砾及与地下暗河有关的机械流水沉积；埋藏溶蚀往往发育与中低温热液有关的异形铁白云石、萤石、闪锌矿、磁黄铁矿等密西西比河谷型矿物以及塌陷构造、裂隙结构、不规则的角砾（化）岩体等。塔里木盆地塔北地区主要发育表生岩溶作用；塔中地区西北部不具备发育大规模表生岩溶的地质条件，以发育埋藏溶蚀作用为主。  相似文献   

Shaking table model test on Shanghai World Financial Center Tower     

Xilin Lu  Yun Zou  Wensheng Lu  Bin Zhao 《地震工程与结构动力学》2007,36(4):439-457

The height of 101‐storey Shanghai World Financial Center Tower is 492m above ground making it possible the tallest building in the world when completed. Three parallel structural systems including mega‐frame structure, reinforced concrete and braced steel services core and outrigger trusses, are combined to resist vertical and lateral loads. The building could be classified as a vertically irregular structure due to a number of stiffened and transfer stories in the building. Complexities related to structural system layout are mainly exhibited in the design of services core, mega‐diagonals and outrigger trusses. According to Chinese Code, the height 190 m of the building clearly exceeds the stipulated maximum height of for a composite frame/reinforced concrete core building. The aspect ratio of height to width also exceeds the stipulated limit of 7 for seismic design intensity 7. A 1/50 scaled model is made and tested on shaking table under a series of one and two‐dimensional base excitations with gradually increasing acceleration amplitudes. This paper presents the dynamic characteristics, the seismic responses and the failure mechanism of the structure. The test results demonstrate that the structural system is a good solution to withstand earthquakes. The inter‐storey drift and the overall behaviour meet the requirements of Chinese Design Code. Furthermore, weak positions under seldom‐occurred earthquakes of seismic design intensity 8 are found based on the visible damages on the testing model, and some corresponding suggestions are proposed for the engineering design of the structure under extremely strong earthquake. Copyright © 2006 John Wiley & Sons, Ltd.  相似文献   

Quasar redshift distribution and selection effects     

You-yuan Zhou  Zu-gan Deng  Zhen-long Zou 《Chinese Astronomy and Astrophysics》1985,9(1):20-26

With the Hewitt-Burbidge catalogue of quasars as our sample, separately for 3 sets of respectively 7, 11, and 13 spectral lines as the “key lines” in the identification of quasar redshifts, we derive the redshift distribution arising from the identification of the lines. A comparison between the calculated and observed distributions shows that 1) the two are clearly correlated, with a correlation coefficient of 0.56. 2) Similar peaks are present in both in the z-intervals 0.2 – 0.4, 0.8 – 0.9, 1.4 – 1.5, and particularly around 1.95, as well similar valleys at 0.1 and 1.5 – 1.8. 3) Both rise or fall together at z = 0.2, 0.3, 0.4, 0.8, 1.9, 1.4, 1.5, 1.6 and 1.7. It thus appears that selection effects play an important role in the redshift distribution of the quasars.  相似文献   

高空资料质量问题的原因分析     

邹玉玲  刘翠芝 《河南气象》2007,(2)

分析了山东省高空资料审核中出现的问题及原因,并对特殊情况和异常数据提出了处理办法。  相似文献   

中国地面月气候资料质量控制方法的研究   总被引：3，自引：2，他引：3       下载免费PDF全文

任芝花熊安元  邹凤玲 《应用气象学报》2007,18(4):516-523

由于气象台站信息变化以及观测规范的频繁变动, 使中国地面气象资料序列比较复杂。该文在分析中国地面历史气象资料中可能存在的非均一性和错误性、研究月气候资料序列存在的可能分布状态的基础上, 提出了中国地面月气候资料质量控制技术。通过分析认为, 中国地面月气候资料的质量控制, 应把下列3种方式结合起来, 进行综合质量检测:①把12个月的气候资料序列联合起来, 进行长时间连续性错误资料检测; ②把时间序列变换为接近正态分布的均一序列后, 进行时间域和空间域的奇异值检测; ③对检测出的连续性可疑资料和单个数据点的奇异值进行人工分析辨别。利用上述质量控制方法, 对1971—2000年中国地面700多基准基本站月统计气候资料进行了质量检查, 最后介绍了质量检查结果。  相似文献   

Solving Three Types of Satellite Gravity Gradient Boundary Value Problems by Least-Squares     

XU Xinyu LI Jiancheng ZOU Xiancai CHU Yonghai 《地球空间信息科学学报》2007,10(3):168-172

The principle and method for solving three types of satellite gravity gradient boundary value problems by least-squares are discussed in detail. Also, kernel function expressions of the least-squares solution of three geodetic boundary value problems with the observations {Γ zz },{Γ xz , Γ yz} and {Γ xx -Γ yy ,2 Γxy}are presented. From the results of recovering gravity field using simulated gravity gradient tensor data, we can draw a conclusion that satellite gravity gradient integral formulas derived from least-squares are valid and rigorous for recovering the gravity field.  相似文献   

施工沉井自动化监测系统的研究     

邹进贵  邹双朝  江文萍  向东  许建雄  陈志兰 《测绘信息与工程》2007,32(6):41-42

分析了对施工沉井几何位置等参数进行自动监测的方法,采用了Visual C 编程语言和Access数据库系统,实现了施工沉井自动化监测系统.  相似文献   

自动气象站现场校准方法探讨   总被引：2，自引：0，他引：2       下载免费PDF全文

罗淇  任芝花  邹树峰  房岩松  吕红梅  刘彬 《气象》2007,33(12):93-97

为确保各要素观测数据的准确、可靠并具有可比性,定期开展自动气象站校准是非常重要的。自动气象站现场校准不同于实验室的检定检测,受客观条件的影响,校准结果具有明显的不确定性。为了保证量值传递准确可靠,减小这种不确定性对校准结果造成的误判,对现场校准提出了改进方法。利用2004年至2006年山东省现场校准资料,采用对比方法分析了常规校准法与改进校准法校准误差的变化趋势。结果表明:按新的方法校准后,气温、湿度、气压传感器的校准误差分别减小0.1℃、1%和0.2hPa;地温传感器的超差数量由23.6%下降到5.2%。改进法减小自然环境对校准结果的影响,避免盲目更换传感器,弥补了常规法的不足。  相似文献   

龙岩红尖山广电微波中转站防雷保护设计          下载免费PDF全文

邹昌雪  张建才  倪青汉 《气象科技》2007,35(Z1)

简要介绍了龙岩市红尖山广电微波中转站的结构和防雷现状.此高山广电微波中转站地区雷暴次数多,强度大,上行雷、下行雷均可能发生,土壤电阻率高,电源多为架空线进户,雷电波侵入机率高、强度大,针对上述特点,以国家防雷标准为依据,考虑台站的地理地形环境的影响,对整个微波站中转系统提出了综合防雷保护方法,为解决高山广电微波站的雷电防护问题提供参考.  相似文献   

DINI12电子水准仪记录数据标准化处理方法     

王海城  邹进贵  刘琦 《地理空间信息》2007,5(5):111-113

电子水准仪的出现是水准测量技术的一次大的变革。在我国尚没有电子水准测量规范出台的情况下,提出了基于DINI12电子水准仪数据处理程序设计思想,对程序具有的测段提取、错误剔除、粗差探测、时间内插温度改正、尺长改正、标准化成果表生成及观测指标统计等功能进行了详述。  相似文献