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2022, 41(3) 597-606 DOI:
ISSN: 1004-5589 CN: 22-1111/P |
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Joint inversion of 3D resistivity and gravity method based on structural constraint |
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WANGDazhuang, LITong1i, ZHANGRongzhe, KANGXinze, HEHaoyuan |
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CollegeofGeo-exploration Scienceand Technology, ]ilin University, Changchun 130026, China |
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Abstract：
The resistivity and gravity method sare considered as two critica1approachesin geophysica1exp1ora- tion.In ordertomaximizetheadvantagesofeach method and reducetheissuesofmu1tip1eso1utionsin thesing1e method ofinversion, ajointinversion a1gorithmofgravityand resistivitymethodsbased on cross-gradientconstraints isapp1ied in thisthesis.Fortheinversion, cross-gradientconstraintsareinc1uded in thejointinversion objective function in pena1tyterms.Theobjectivefunction isso1ved numerica11ybyGaussian Newton'smethod.Themode1 tria1resu1tsindicatethatthejointinversion providesamorestructura11ysimi1armode1than theindividua1inver- sions.Theresistivitymode1isconsidered tobemoreeffectivein constrainingthedensitymode11ongitudina11y.The 1ongitudina1reso1ution ofthedensitymode1improved significant1y, whi1ethejointinversion cou1d captureamore accuratespatia1structuredistribution of the abnorma1body. |
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Keywords：
resistivity method
gravity method
cross-gradient
jointinversion
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Received Revised Online: |
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