Joint interpretation Versus joint inversion of DC resistivity and magnetometry data
عنوان دوره: نوزدهمین کنفرانس ژئوفیزیک ایران
کد مقاله : 1544-NIGS
نویسندگان
1موسسه ژئوفیزیک
2Tehran University
چکیده
Separate inversions of DC resistivity and magnetometry methods are diagnostic tools for recovering subsurface anomalies but their integration can lead to more consistent interpretation with real subsurface. This integration may be carried out through joint interpretation, cooperative inversion and joint inversion. In this paper we want to compare joint interpretation and joint inversion of DC resistivity and magnetometry data. A linear approximated forward problem of the DC resistivity is used so that both the resistivity and magnetic inverse problems are expressed as a linear integral equation under the form of a Fredholm integral of 1st kind. At first, a synthetic case of a cavity above a conductor is considered indicating of the geophysical data integration importance. Finally, two data sets of DC resistivity and magnetometry collected on a profile of archeological area of old Pompeii city near Naples in Italy. For the both synthetic and real cases, interpretation elicited from joint inversion is superior to the joint interpretation.
کلیدواژه ها
Title
Joint interpretation Versus joint inversion of DC resistivity and magnetometry data
Authors
Ramin Varfinezhad, Behrooz Oskooi
Abstract
Separate inversions of DC resistivity and magnetometry methods are diagnostic tools for recovering subsurface anomalies but their integration can lead to more consistent interpretation with real subsurface. This integration may be carried out through joint interpretation, cooperative inversion and joint inversion. In this paper we want to compare joint interpretation and joint inversion of DC resistivity and magnetometry data. A linear approximated forward problem of the DC resistivity is used so that both the resistivity and magnetic inverse problems are expressed as a linear integral equation under the form of a Fredholm integral of 1st kind. At first, a synthetic case of a cavity above a conductor is considered indicating of the geophysical data integration importance. Finally, two data sets of DC resistivity and magnetometry collected on a profile of archeological area of old Pompeii city near Naples in Italy. For the both synthetic and real cases, interpretation elicited from joint inversion is superior to the joint interpretation.
Keywords
DC resistivity, joint interpretation, Joint Inversion, Magnetometry