DOI: 10.1016/j.jag.2013.11.004
Scopus记录号: 2-s2.0-84921264128
论文题名: 3D object-oriented image analysis in 3D geophysical modelling: Analysing the central part of the East African Rift System
作者: Fadel I ; , van der Meijde M ; , Kerle N ; , Lauritsen N
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2015
卷: 35, 期: PA 起始页码: 44
结束页码: 53
语种: 英语
英文关键词: 3D gravity model
; Inversion
; Object-oriented image analysis
; Satellite gravity
; Seismic tomography
; Tanzania craton
英文摘要: Non-uniqueness of satellite gravity interpretation has traditionally been reduced by using a priori information from seismic tomography models. This reduction in the non-uniqueness has been based onvelocity-density conversion formulas or user interpretation of the 3D subsurface structures (objects) based on the seismic tomography models and then forward modelling these objects. However, this formof object-based approach has been done without a standardized methodology on how to extract the sub-surface structures from the 3D models. In this research, a 3D object-oriented image analysis (3D OOA) approach was implemented to extract the 3D subsurface structures from geophysical data. The approach was applied on a 3D shear wave seismic tomography model of the central part of the East African Rift System. Subsequently, the extracted 3D objects from the tomography model were reconstructed in the 3D interactive modelling environment IGMAS+, and their density contrast values were calculated usingan object-based inversion technique to calculate the forward signal of the objects and compare it with the measured satellite gravity. Thus, a new object-based approach was implemented to interpret and extractthe 3D subsurface objects from 3D geophysical data. We also introduce a new approach to constrain the interpretation of the satellite gravity measurements that can be applied using any 3D geophysical model. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79505
Appears in Collections: 气候变化事实与影响
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作者单位: University of Twente, Faculty of Geo-information Science and Earth Observation (ITC), P.O. Box 6, Enschede, Netherlands; Geology Department, Faculty of Science, Helwan University, Ain Helwan, Egypt; DTU Space, National Space Institute, Elektrovej, Building 327+328 and Ørsteds Plads, Building 348, Kgs. Lyngby, Denmark
Recommended Citation:
Fadel I,, van der Meijde M,, Kerle N,et al. 3D object-oriented image analysis in 3D geophysical modelling: Analysing the central part of the East African Rift System[J]. International Journal of Applied Earth Observation and Geoinformation,2015-01-01,35(PA)