Quantification of gravity anomalies for subsurface geological structures using variable density contrast, 1st ed. 2019
Algorithms and Computer Programs
Lecture notes in earth system sciences Series

Computer based algorithms to analyze gravity anomalies for subsurface structures have gained momentum in the search of natural resources. The enormous progress since then, however, led to the development of new interpretational techniques with increasing accuracy to analyze the gravity anomalies. The fact that variable density models yield more reliable interpretations has paved the way for developing new analytical tools to analyze gravity anomalies. In this book, the parabolic density function which unambiguously describes the density-depth dependence of sedimentary rocks is used to design new algorithms and relevant GUI based JAVA programs to analyze the gravity anomalies of subsurface geological structures. Although the terms modeling and inversion are used more or less synonymously to refer to various interpretation strategies of gravity anomalies, criteria has been formulated and followed to design modeling and inversion strategies of gravity anomalies. Accordingly, automatic inversion algorithms coupled with relevant computer codes to analyze the gravity anomalies due to 2-D and 2.5-D fault structures described with both planar and non-planar fault planes are presented. Automatic techniques based on modeling and inversion principles to analyze the gravity anomalies due to 2-D and 2.5-D sedimentary basins even when the profile of interpretation fails to bisects the strike length of the target are presented with related software. Automatic modeling and inversion techniques for the analysis of measured gravity anomalies due to 3-D sedimentary basins are presented. Also new is the automatic determination of regional gravity background in case of inversion algorithms. The highlight of the book is that, in each case, the robustness is demonstrated with both synthetic and real field gravity anomalies. Thus this book is very useful to academicians, researchers and field geophysicists.

From the Contents: Analysis of gravity anomalies due to 2-D fault structures with parabolic density function.- Analysis of gravity anomalies due to 2.5-D fault structures with parabolic density function.- Analysis of gravity anomalies due to 2-D listric fault sources with parabolic density function.- Analysis of gravity anomalies due to 2.5-D listric fault sources with parabolic density function.- Modeling of gravity anomalies due to 2-D sedimentary basins with parabolic density function.- Inversion of gravity anomalies due to 2-D sedimentary basins with parabolic density function.- Modeling of gravity anomalies due to 2.5-D sedimentary basins with parabolic density function.

No book is available as on date to provide both mathematical algorithms and related computer codes to analyze the gravity anomalies of subsurface geological structures using variable density contrast

Test data files are provided for each interpretational technique to enable the reader to have hand on practise

Real field examples are provided for each interpretational technique to realize its practical application