Determination of the Velocity of Meteors Based on Sinodial Modulation and Frequency Analysis

In meteor photography the velocity of meteors is generally obtained from a chopper which blocks periodically the incident light beam in front of the camera lens. In this paper I examine modulation of the meteor trail instead with a sinodial function and use frequency analysis to compute accurately the mean atmospheric velocity.     

断陷盆地陡坡带高精度地震勘探技术应用

本文以河南泌阳凹陷为例,从散射波波动方程正演着手,分析大断面地震波散射场的物理机制和特点,结合叠前偏移处理需要进行观测系统论证。采集上主要运用模型约束正演技术优选采集参数,并采取了主要解决山前激发能量问题的技术措施;资料处理上主要应用了基于精细速度建模的叠前深度偏移成像处理方法;解释上通过可视化构造成图分析陡坡砂砾岩体的分布规律和发育期次,并运用沟扇对应理论,结合地震相分析、层拉平水平切片分析、属性分析等方法,预测砂砾岩体分布区带和层位。部署探井并取得了成功,相继在凹陷南部陡坡带发现了两个富集含油区块。     

Analysis of prospecting polymetallic metallogenic belts by comprehensive geophysical method

This paper is based on the analysis and research on the silver-lead-zinc polymetallic ore in New Ballyhoo Banner in southern Manzhouli of Inner Mongolia.Because metal mineralization brings rock formations,the geophysical features such as low resistivity,high polarization rate and uneven distribution of magnetization,the comprehensive geophysical methods are adopted including high-precision magnetic measurement,high-power induced polarization,IP field middle gradient and controlled source audio-frequency magnetotellurics.In the survey work of multi-metal ore deposits,from surface sweeping to single point measurement,and from single point to section going deeper layer by layer,the resolution of measurement is continuously improved,and various geophysical methods support and complement each other,so explorers can successfully predict the direction,scale and volume of the metallogenic belts in conjunction with geochemical exploration,geological survey and drilling.It has provided a strong basis for completing the exploration task of predicting the reserve volume of ore bodies.The research conclusions of this exploration case have thus a high reference value in the same type of exploration work.     

哈密白石泉铜镍矿找矿方法技术组合探讨

哈密白石泉铜镍矿是近年来新发现的中型铜镍矿床.分析该矿床发现过程中运用高精度重力测量等物探方法对找矿的指导作用,确定白石泉铜镍矿最有效找矿技术组合为高精度重力测量+可控源大地音频电磁(CSAMT)+钻探验证.     

西天山地区岩矿石磁化率研究及应用

航磁推断解释首先要研究岩矿石磁化率。西天山地区近年来野外实测500余处物性点,累计获得有效磁化率数据15000余个,数据统计分析结果表明,石炭系大哈拉军山组、伊什基里克组和二叠系乌郎组是区内最主要的磁性地层,部分海西期岩体磁性较强,而磁铁矿具有极高的磁化率值。根据这些磁化率特征,在西天山地区圈定磁性火山地层上百处,新圈定隐伏（半隐伏）岩体221处,推断铁矿磁异常109处,新发现铁矿（矿点）10余处。     

Analysis of prospecting polymetallic metallogenic belts by comprehensive geophysical method

This paper is based on the analysis and research on the silver-lead-zinc polymetallic ore in New Ballyhoo Banner in southern Manzhouli of Inner Mongolia. Because metal mineralization brings rock formations,the geophysical features such as low resistivity, high polarization rate and uneven distribution of magnetization, the comprehensive geophysical methods are adopted including high-precision magnetic measurement, high-power induced polarization, IP field middle gradient and controlled source audio-frequency magnetotellurics. In the survey work of multi-metal ore deposits, from surface sweeping to single point measurement, and from single point to section going deeper layer by layer, the resolution of measurement is continuously improved, and various geophysical methods support and complement each other, so explorers can successfully predict the direction, scale and volume of the metallogenic belts in conjunction with geochemical exploration, geological survey and drilling. It has provided a strong basis for completing the exploration task of predicting the reserve volume of ore bodies. The research conclusions of this exploration case have thus a high reference value in the same type of exploration work.     

高精度磁测在山西省繁峙吐楼铁矿区勘探中的应用

该文阐述了高精度磁测工作在山西省繁峙吐楼铁矿区的应用,其高精度磁测目的是查清异常分布,查找隐伏铁矿体,圈定铁矿体分布范围、矿体位置、形态、大小、产状、边界等几何特征及查明矿区地质特征,根据现有探采工程揭露控制,初步估算了铁矿石资源量。     

高精度地球物理学是创新未来的必然发展轨迹

地球物理学在整个地球科学研究与探索中占有重要地位,突破该领域以描述、推断为主体的框架,并逐步向量化或半量化前进确为必然.地球物理学逐步向高精度升华乃深化理解各有关科学问题的时代需求.基于物理学概念,从定义出发促使多学科交叉和不断创新,是地球物理学能否抢占地球科学制高点的核心所在.为此,真正意义上的高精度观测、高分辨率的...