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The Terminal of Mineral System exploration in Thick Coverage Area by gravity and magnetic Data――A Case Study on the Nihe Iron Deposit

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Acta Geologica Sinica(English Edition) 2021年第S1期95卷 118-120页

作者： ZHOU Wenyue YAN Jiayong CHEN Changxin China Aero Geophysical Survey and Remote Sensing Center for Natural Resources Beijing 100083China School of Geophysics and Information Technology China University of Geosciences(Beijing)Beijing 100029China Key Laboratory of Airborne Geophysics and Remote Sensing Geology Ministry of Natural ResourcesBeijing 100083China Chinese Academy of Geological Sciences Beijing 100037China China Deep exploration Center-SinoProbe Center Chinese Academy of Geological Sciences and China Geological SurveyBeijing 100037China

The study is concerned with the airborne magnetic and gravity data aiming at evaluating the terminal of mineral *** iron deposit,situated in the center of Luzong ore cluster area,is the case to our *** tectonic environments,source material,and preservation background illustrate distinct properties in the geophysical observation results.

关键词： mineral system gravity and magnetic exploration ore deposit

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Evaluation and extraction of weak gravity and magnetic anomalies

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Applied Geophysics 2007年第4期4卷 288-293页

作者：刘云祥中国石油东方地球物理公司河北涿州072751

In this paper, I introduce what are called weak gravity and magnetic anomalies and propose standards for estimating their reliability. I also introduce new techniques for processing this kind of weak anomaly. These techniques consist of interference elimination and weak signal extraction. Practical applications have proved their effectiveness, Weak gravity and magnetic anomalies will get more attention with the development of targeted exploration.

关键词： gravity and magnetic exploration weak anomaly anomaly extraction less balance filtering distortion correction

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Three-dimensional gravity and magnetic data acquisition and study on its joint gradient Euler deconvolution method

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Applied Geophysics 2020年第2期17卷 297-305,317页

作者： Ma Guo-Qing Yong Xiao-Yu Li Li-Lit Guo Hua College of Geoexploration Science and Technology Jilin UniversityChangchun 130021China China Aero Geophysical Survey and Remote Sensing center for Land and Resources Beijing 100083China

Three-dimensional(3 D)gravitational and magnetic exploration is performed using aerial measurement tools,however,this has difficulties with measuring-height design and the construction of a joint-interpretation *** present,the height in such experiments is set according to the measurement scale,and the distribution characteristics of anomalies are not fully ***,we present the idea of using the attenuation characteristics of a singular-value spectrum to evaluate the contributions of various measurement heights and multi-height combinations for inversion to correctly and reasonably design appropriate measuring heights and the number of various measurement heights to be *** jointgradient Euler-deconvolution method can accurately obtain the distribution of geological bodies from 3 D gravitational and magnetic data at an improved resolution,and experimental tests confirm these ***,an actual 3 D aeromagnetic-data-acquisition and inversion test were carried out in the vicinity of the Zhurihe Iron Mine in Inner *** fl ight-height diff erence was set to 60 m,and the specifi c distribution of lodes was obtained by the joint-gradient Euler-deconvolution *** provides a reliable basis for future detailed exploration and proves that the methods presented in this paper have good practicalapplication eff ects and prospects.

关键词： Three-dimensional gravity and magnetic exploration singular value gradient Euler deconvolution

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