Focusing iterative migration of magnetic tensor field
- Zhengwei Xu (University of Houston) | Liangjun Yan (Yangtze University) | Muran Han (University of Houston) | Hemin Yuan (University of Copenhagen) | Qianqian Wei (University of Houston)
- Document ID
- Society of Exploration Geophysicists
- SEG International Exposition and Annual Meeting, 15-20 September, San Antonio, Texas, USA
- Publication Date
- Document Type
- Conference Paper
- 2019. Society of Exploration Geophysicists
- Migration, 3D, Magnetic tensor
- 1 in the last 30 days
- 1 since 2007
- Show more detail
A novel approach for the rapid interpretation of magnetic tensor data is introduced. Magnetic tensor fields are significantly more sensitive to local anomalies than the traditional total magnetic intensity data (TMI). Threedimensional (3D) iterative magnetic gradient migration is a stable, solid, and alternative technique to solve the disadvantages of inverse problem. The approach can obtain a stable migration image by direct integral transforming an observed tensor field contaminated with a high-noise dataset into a subsurface susceptibility. Moreover, a focusingstabilizing functional is considered into the migration framework to produce more accurate images of distributionof sharp susceptibility anomalies with the correct depth in subsurface formations. An experimental study and a realistic geology model are carried out to investigate the effectiveness of this new method to ascertain how the noise level would influence the stability of migration results. Results show a stable image with high resolution.
Presentation Date: Monday, September 16, 2019
Session Start Time: 1:50 PM
Presentation Time: 2:40 PM
Location: Poster Station 1
Presentation Type: Poster
|File Size||460 KB||Number of Pages||5|
Hannington,M. D.,C. T.Barrie, andW.Bleeker,1999,The giant kidd creek volcanogenic massive sulfide deposit, western Abitibi Subprovince, Canada—Summary and synthesis,inM.D.Hannington, andC.T.Barrie, eds.,The Giant Kidd Creek volcanogenic massive sulfide deposit, western Abitibi subprovince, Canada:Economic Geology Monograph 10,661–672.
Peter,J. M.,I. M.Kjarsgaard, andW. D.Goodfellow,2003,Hydrothermal sedimentary rocks of the heath steele belt, bathurst mining camp, New Brunswick—Part 1. Mineralogy and mineral chemistry,inW.D.Goodfellow,S.R.McCutcheon, andJ.M.Peter, eds.,Massive sulfide deposits of the Bathurst mining camp, New Brunswick, and northern Maine:Economic Geology Monograph 11,361–390.
Portniaguine,O., andM. S.Zhdanov,2002,3-D magnetic inversion with data compression and image focusing:Geophysics,67,1532–1541,doi:10.1190/1.1512749.
Schmidt,P.,D.Clark,K. E.Leslie,M.Bick,D. L.Tilbrook, andC. P.Foley,2004,GETMAG—a SQUID magnetic tensor gradiometer for mineral and oil exploration:Exploration Geophysics:35,297–305,doi:10.1071/EG04297.
Stolz,R.,V.Zakosarenko,M.Schulz,A.Chwala,L.Fritzsch,H. G.Meyer, andE. O.Kostlin,2006,Magnetic full-tensor SQUID gradiometer system for geophysical applications:The Leading Edge,25,178–180,doi:10.1190/1.2172308.
Wan,L.,andM. S.Zhdanov,2013,Iterative migration of gravity and gravity gradiometry data:83rd Annual International Meeting, SEG,Expanded Abstracts,1211–1215,doi:10.1190/segam2013-1036.1.
Zhdanov,M. S.,X.Liu,G. A.Wilson, andL.Wan,2012.3D migration for rapid imaging of total-magnetic-intensity data:Geophysics,77,no.2,J1–J5,doi:10.1190/geo2011-0425.1.