中国自流盆地的类型划分及其分布(摘要)     

陈梦熊  紀传豪  孙昌仁 《水文地质工程地质》1959,(7)

一、我国自流盆地形成的大地构造条件自流盆地的形成主要决定于大地构造条件。根据我国地质演变历史,在前震且纪吕梁运动以后,已基本硬化形成地台。但中国西部和东部的发展历史不同,西部属活动性比较大的地槽型强烈褶皱地区,东部则属活动性较小的、以前震且纪结晶片岩和轻变质岩系作基底并以古生代浅海相沉积和中生代陆相沉积作盖层的地台型断裂褶皱地区。  相似文献   

Ni002水准仪的结构原理及i角c值的有关问题     

张方仁  易法楷  蒋先致  顾治平 《测绘通报》1980,(3)

Ni002是一种高精度的补偿器水准仪，我们对它的结构特点进行了探讨，并对其i角和c值作了试验性的测定和分析。  相似文献   

Computer Modeling and Simulation of Geofluids： A General Review and Sample Description   总被引：3，自引：0，他引：3  

胡文XUAN  段振豪 《中国地球化学学报》1997,16(3):240-247

Thermodynamic properties of fluids are essential for the understanding of the geochemical behavior of various processes,The paper introduces the most updated computer modeling and simulation methods in the study of thermodynamics of geofluids,inclduing semiempirical models(such as equation of state)and molecular dynamics and Monte Carlo simulation.A well-established semi-empirical model can interpolate and extrapolate experimental data and yield much physicochemical information.Computer modeling may produce“experimental data“ yield much physicochemical information.Computer modeling may produce“experimental data“even under experimentally difficult conditions.They provide important methods for the study of geological fluid systems on the quantitative basis.  相似文献   

赤峰夏季中一大雨以上降水的极轨卫星云图分析预报     

罗孝逞  郭建志 《内蒙古气象》1990,(5):1-5

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掺杂作用与HW模型在掺杂作用研究中的应用   总被引：5，自引：0，他引：5  

袁见齐  段振豪 《地球科学》1989,14(5):553-562

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青海省柴木盆地—里坪和东,西台吉乃尔湖地质新认识   总被引：2，自引：0，他引：2  

朱允铸  吴必豪 《地质论评》1989,35(6):558-565

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Trimble 5700 GPS快速静态定位及精度检验     

肖天豪  周强 《河南测绘》2006,(4):4-6,10

一、引言 目前，河南省已经全面展开地籍调查工作，控制测量工作任务饱满，研究如何在保证地籍调查工作精度的情况下提高工作效率很有必要。随着GPS软、硬件的完善与发展，GPS技术已经基本上取代了常规测量方法建立各种类型和等级控制网。采用GPS布设一般等级控制网时，在每个测站上观测时间一般在1～2个小时，即使利用GPS进行一、二级导线测量，一般也要观测40分钟以上。如果采用快速静态定位方法，观测时间可以缩短到20分钟，生产效率大幅度提高。本文以邓州市D级网测量为例，利用静态（观测2小时）和快速静态（观测20分钟）定位观测两套数据，分别进行数据传输、数据处理、基线解算和网平差，然后对网平差报告进行比较，得出预定结论。具体介绍了快速静态定位特点、作业组织模式、快速静态作业技术要求、数据处理、网平差及精度检验。  相似文献   

人工建模技术在地铁三维图中的应用     

李存文  肖天豪  吕宝奇 《地理空间信息》2021,19(3):92-95

三维示意图的三维模型仿真度可超过90%,各种城市实景和信息由实地采集所得,并按照卫星定位和国家测绘相关标准与要求绘制,表达位置精准,以45°视角俯瞰城市,使乘客能轻易地通过辨认自己熟悉的建筑物来判断方向,从而强化地铁出口位置和周边信息的导向功能。以郑州市轨道交通5号线32个站点的三维示意图工程为例,简述了人工建模技术在郑州地铁交通服务中的应用情况,并对人工建模的流程和关键技术等进行了研究。  相似文献   

南海表层沉积物稀土元素的地球化学   总被引：8，自引：1，他引：8  

古森昌  吴必豪 《热带海洋》1989,8(2):93-101

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用氚讨论中国西部新疆干旱区的水循环率     

北纲豪一  S. Horiuchi  M. Watanabe  奥田节夫 《湖泊科学》1998,10(S1):563-578

Tritium concentrations are used to trace water circulation in the Urumqi and Turfan basins in the Xinjiang, western China. Tritium analyses were made for 77 water samples of river waters, groundwaters, spring waters, lake waters and glacier ice collected in summers in 1992 and 1994. The tritium concentrations in the waters are in a wide range from 0 to 125 TU, most of which are considerably high compared with those of most waters in Japan, because tritium levels in precipitation in the area are over ten times as high as those in Japan. River waters originating in glacier regions contain melt glacier, the proportion of which is over 0.5 to river water. The mean resi-dence time of circulating meteoric water in the mountain regions is estimated to be about 15 years. Most groundwaters and spring waters in the flat regions are mainly derived from river waters originating in glacier regions. The groundwater of greatest tritium concentrations in wells in Urumqi City is derived from Urumqi River about 25 years ago. It takes several ten years for river water to pass the underground to many springs. Some groundwaters and spring waters have taken a long time more than 40 years to travel under the ground. Enrichment of tritium in lake water by evaporation is considered to estimate the contribution of groundwater flow to the recharge of lake. Various contributions of groundwater to lakes are inferred for the various type of salinity in closed or semi-closed lakes. The inflow rates of groundwater to salt lakes are small as against fresh water lakes.  相似文献