王泰涵^1,2,,
马国庆^1,2,,,
熊盛青³,
刘燕戌³,
曾昭发¹,
李丽丽^1,2,
孟庆发^1,2
1. 吉林大学地球探测科学与技术学院, 长春 130026
2. 吉林大学国家发展与安全研究院, 长春 130026
3. 中国地质调查局自然资源航空物探遥感中心, 北京 100083

基金项目: 国家"十三五"重点研发计划课题（2017YFC0602203，2017YFC0601606），国家自然科学基金项目（41604098），国家科技重大专项子任务（2016ZX05027-002-003）和中国博士后科学基金资助项目（2019M651209）联合资助


详细信息

作者简介: 王泰涵, 男, 1990年生, 师资博士后, 主要从事位场数据处理及解释方面的研究.E-mail:wangtaihan@jlu.edu.cn

通讯作者: 马国庆, 男, 1984年生, 教授, 主要从事重磁数据处理及解释的研究.E-mail:maguoqing@jlu.edu.cn

中图分类号: P631

收稿日期:2019-05-20
修回日期:2020-06-07
上线日期:2020-07-05

Joint regularized density inversion method of airborne, surface and borehole gravity anomaly data

WANG TaiHan^1,2,,
MA GuoQing^1,2,,,
XIONG ShengQing³,
LIU YanXu³,
ZENG ZhaoFa¹,
LI LiLi^1,2,
MENG QingFa^1,2
1. College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, China
2. Institute of National Development and Security Studies, Jilin University, Changchun 130026, China
3. China Aero Geophysical Survey and Remote Sensing Center for Natural Resources, Beijing 100083, China


More Information

Corresponding author: MA GuoQing,E-mail:maguoqing@jlu.edu.cn

MSC: P631

--> Received Date: 20 May 2019
Revised Date: 07 June 2020
Available Online: 05 July 2020


摘要
摘要:围绕综合利用空-地-井多源重力异常联合反演提升精度的目标，提出正则化协同密度反演方法，从而有效利用多维数据的横向和纵向变化特征提高反演精度，且无需先验信息的约束.此外，还提出利用奇异值谱和深度分辨率工具评价航空数据观测高度和层数对反演分辨率的影响.通过理论模型试验本文方法在空-地、地-井等不同情况下的应用效果，结果表明空-地-井重力异常正则化协同密度反演方法能获得更高分辨率、高精度的反演结果，且证明不同的钻孔位置对反演结果有较大的影响，从而可指导实际的空-地-井联合勘探.最后，利用文顿盐丘实际勘探数据进行空地和空地井重力数据协同反演，反演结果垂向分辨率明显优于地面观测数据反演结果，盐盖的顶面及中心埋深与前人研究和地质资料解释相吻合，验证了方法正确性及实用性，为推进我国空-地-井立体重磁勘探提供了重要的技术手段.
关键词: 空-地-井重力/
协同密度反演/
分辨率/
文顿盐丘

Abstract:In order to comprehensively utilize the joint inversion of airborne-surface-borehole multi-source gravity data anomalies to improve the accuracy, a regularized density inversion method was proposed, so as to effectively utilize the horizontal and vertical variation characteristics of multi-dimensional data to improve the inversion accuracy without the constraint of prior information. In addition, singular value spectrum and depth resolution plot tool were used to evaluate the effect of observation height and flight layer numbers on inversion resolution. Theoretical model was used to test the application effect of the method in airborne-surface, surface-borehole and other conditions. The results showed that joint regularized density inversion of airborne-surface-borehole gravity anomaly can obtain higher resolution and precision, and proved that different drilling positions have a greater influence on inversion results, which can guide the actual airborne-surface-borehole joint exploration. Finally, using actual field data of Vinton salt dome to carry out airborne-surface and airborne-surface-borehole joint inversion, the vertical resolution of inversion result was obviously better than the inversion result of surface data. The top depth and center depth of cap rock was consistent with predecessors' research and geological interpretation, which verifies the correctness and practicability of the method, and provides an important technical means for promoting three-dimensional airborne-surface-borehole gravity and magnetic exploration in China.
Key words:Airborne-surface-borehole gravity/
Joint density inversion/
Resolution/
Vinton salt dome



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