Inversion of Moho interface in northeastern China with prior information

Abstract

Non-uniqueness is always, by nature, the problem we face in inversion processes, and it is caused by the phenomenon of equivalence in field, erroneous, discrete, and finite features in observation and the influence of other sources. Many authors have done lots of researches in this field in order to get more reliable outcomes, and joint inversion is a thriving one where different kinds of data are combined to derive certain information simultaneously or sequentially. One of these studies is that the prior information such as the geological, drilling and seismic data will be used as constraints, while the inversion procedure can be controlled. In this article we use a new method with the goal of better obtaining the three-dimensional density contrast interface. This prior seismic data integrated in the inversion can play a constrained role in the procedure which means that the depth of the Moho interface at the seismic location will be restricted. It thus can provide a credible result. In order to test its effect, this program is applied in a field example—derivation of Moho geometry in Northeast China.

Keywords

prior information / inversion / Moho / seismic data

References

Albora A M, Ucan O N. Gravity Anomaly Separation Uusing 2-D Wavelet Approach and Average Depth Calculation. Dogus University Journal, 2001, 3: 1-12.

Bott M H P. The Use of Rapid Digital Computing Methods for Direct Gravity Interpretation of Sedimentary Basins. Geophysical Journal of the Royal Astronomical Society, 1960, 3(1): 63-67.

Chen Y L, Niu F L, Liu R F, . Crustal Structure beneath China from Receiver Function Analysis. Journal of Geophysical Research, 2010, 115: 1-22.

Chenot D, Debeglia N. Three-Dimensional Gravity or Magnetic Constrained Depth Inversion with Lateral and Vertical Variation of Contrast. Geophysics, 1990, 55(3): 327-335.

Cordell L, Handerson R G. Iterative Three-Dimensional Solution of Gravity Anomaly Data Using a Digital Computer. Geophysics, 1968, 33(4): 596-601.

Dolmaz M N, Hisarli Z M, Ustaömer T, . Curie Point Depths Based on Spectrum Analysis of Aeromagnetic Data, West Anatolian Extensional Province, Turkey. Pure & Applied Geophysics, 2005, 162(3): 571-590.

Ellis R. Non-Uniqueness in Potential Field Inversion, with Application to the Potiguar Basin. Proceedings of Non Seismic Method: Birth and Re-Birth of Geophysics, Rio de Janeiro, 2010, 1-28.

Fedi M, Quarta T. Wavelet Analysis for the Regional-Residual and Local Separation of the Potential Field Anomalies. Geophysical Prospecting, 1998, 46(5): 507-525.

Fu W Z, Yang B J, Liu C, . Study on The Seismology in Manzhouli-Suifenhe Geoscience Transect of China. Journal of Changchun University of Science and Technology, 1998, 28(2): 206-212.

Gerard A, Debeglia N. Automatic 3-Dimensional Modeling for the Interpretation of Gravity or Magnetic Anoma lies. Geophysics, 1975, 40(6): 1014-1035.

Gómez-Ortiz D, Agarwal B N P. 3DINVER.M: A MATLAB Program to Invert the Gravity Anomaly over a 3D Horizontal Density Interface by Parker-Oldenburg’s Algorithm. Computers & Geosciences, 2005, 31(4): 513-520.

Jia D C, Hu R Z, Lu Y, . Collision Belt between the Khanka Block and the North China Block in the Yanbian Region, Northeast China. Journal of Asian Earth Sciences, 2004, 23(2): 211-219.

Jin X, Yang B J. Study on Geophysical and Deep Tectonic Characters in Manzhouli-Suifenhe Geoscience Transect of China, 1994 Beijing: Seismological Publishing House, 1-195.

Lin W, Faure M, Nomade S, . Permian-Triassic Amalgamation of Asia: Insights from Northeast China Sutures and Their Place in the Final Collision of North China and Siberia. Comptes Rendus Geoscience, 2008, 340(2–3): 190-201.

Ling Z M, Yang M. A Computer Method for Gravity Interpretation of Two-Dimensional Density Contrast Interface with Some Known Depths. Acta Geophysica Sinica, 1985, 28(3): 311-321.

Liu B, Li S C, Li S C, . 3D Electrical Resistivity Inversion with Least-Squares Method Based on Inequality Constraint and Its Computation Efficiency Optimization. Chinese Journal of Geophysics, 2012, 55(1): 260-268.

Liu G D, Hao T Y, Liu Y K. The Significance of Gravity and Magnetic Research for Knowing Sedimentary Basin. Progress in Geophysics, 1996, 11(2): 1-15.

Lu Z X, Xia H K. Geoscience Transect from Doing Ujimqinqi, Nei Mongol, to Donggou, Liaoning, China. Acta Geophysica Sinica, 1993, 36(6): 765-772.

Nagendra R, Prasad P V S, Bhimasankaram V L S. Forward and Inverse Computer Modeling of A Gravity Field Resulting from a Density Interface Using Parker-Oldenburg Method. Computers & Geosciences, 1996, 22(3): 227-237.

Oldenburg D W. The Inversion and Interpretation of Gravity Anomalies. Geophysics, 1974, 39(4): 526-536.

Parker R L. The Rapid Calculation of Potential Anomalies. Geophysical Journal of the Royal Astronomical Society, 1973, 31(4): 447-455.

Parker R L. Geophysical Inverse Theory, 1994 New Jersey: Princeton University Press, 1-386.

Rao P R, Swamy K V, Murthy I V R. Inversion of Gravity Anomalies of Three-Dimensional Density Interfaces. Computers and Geosciences, 1999, 25(8): 887-896.

Ren J S, Jiang C F, Zhang Z K, . The Geotectonic Evolution of China, 1980 Beijing: Science Press, 67-69.

Scales J A, Tenorio L. Tutorial Prior Information and Uncertainty in Inverse Problems. Geophysics, 2001, 66(2): 389-397.

Spector A, Grant F S. Statistical Models for Interpreting Aeromagnetic Data. Geophysics, 1970, 35(2): 293-302.

Sun B, Wang L S, Dong P, . Integrated Analysis on Gravity and Magnetic Fields of the Hailar Basin, NE China: Implications for Basement Structure and Deep Tectonics. Pure & Applied Geophysics, 2012, 169(11): 2011-2029.

Talwani M, Worzel J L, Landisman M. Rapid Gravity Computations for Two Dimensional Bodies with Application to the Mendocino Submarine Fracture Zone. Journal of Geophysical Research, 1959, 64(1): 49-59.

Tarantola A. Inverse Problem Theory: Methods for Data Fitting and Model Parameter Estimation, 1987 Amsterdam and New York: Elsevier, 1-613.

Tarantola A. Inverse Problem Theory and Methods for Model Parameter Estimation, 2005 Philadelphia: Society for Industrial and Applied Mathematics, 1-333.

Ucan O N, Seker S, Albora A M, . Separation of Magnetic Fields in Geophysical Studies Using a 2-D Multi-Resolution Wavelet Analysis Approach. Journal of the Balkan Geophysical Society, 2000, 3(3): 53-58.

Wang B B, Hao T Y. The Inversion of Two-Dimensional Moho-Density Interface with Several Known Control Points. Progress in Geophysics, 2008, 23(3): 834-838.

Wang J L, Wang Y X, Wan M H. Oil Gravity and Magnetic Interpretation, 1991 Beijing: Petroleum Industry Press, 254-256.

Wu Y J, Dong P, Wang L S, . Research on Tectonic Divisions and Deep Faults in Northeast China-Based on Wavelet Multi-Scale Decomposition Method. Progress in Geophysics, 2012, 27(1): 45-57.

Xie M Q. Amalgamating Plate Tectonic and Its Droved Mechanism-Tectonic Evolution of Northeast China and Adjacent Area, 2000 Beijing: Science Press, 12-40.

Xiong X S, Gao R, Zhang X Z, . The Moho Depth of North China and Northeast China Revealed by Seismic Detection. Acta Geoscientica Sinica, 2011, 32(1): 46-56.

Yang B J, Liu C, Liang T C. The Basic Character of Moho in Manzhouli-Suifenhe Geoscience Transecct (Detailed Abstract). Journal of Changchun University of Science and Technology, 1998, 28(1): 111-113.

Yin C C. Inherent Nonuniqueness in Magnetotelluric Inversion for 1D Anisotropic Models. Geophysics, 2003, 68(1): 138-146.

Zeng H L. Gravity Field and Gravity Exploration, 2005 Beijing: Geological Publishing House, 226-234.