TY  - CONF
AU  - Adrian, Juliane
AU  - Tezkan, Bülent
TI  - Application of the Newly Developed 2D DCR/TDIP Inversion Algorithm: Inversion Studiesand Analysis of Field Data Acquired on a Copper Ore Deposit
M1  - FZJ-2018-05546
PY  - 2017
AB  - We present inversion studies obtained with a newly developed 2D inversion algorithm for DirectCurrent Resistivity (DCR) and Time-domain induced polarization (TDIP) data. The algorithm usesthe finite element approach on unstructured meshs which simplifies the incorporation oftopography. The model parameters resistivity and chargeability are connected by a perturbationapproach and the inversion is conducted in two steps.By inversion studies with synthetic data, it is shown that chargeability structures can be reproducedby the algorithm in presence or absence of a corresponding resistivity anomaly. A further studycompares the effects of different smoothness constraint matrices that approximate first orderderivatives of parameter transitions of neighboring mesh elements. It is shown that it is preferable touse a constraint that considers the shape and size of the elements of unstructured meshs overconstraints that weight all element boundaries equally. Furthermore, a method is presented thatapproximates a depth of investigation by deriving a threshold of sensitivity coverage from the ruleof thumb.As a case study, inversion results of field data acquired on a copper ore deposit located in Turkeyare presented. The ore deposit is elongated beneath a valley structure and has sulfide content. Dueto its disseminated form, resistivity anomalies induced by this deposit are hard to detect. However,chargeability inversion results show anomalies below 10 m depth with values of >100 mV/V. Thisclearly indicates the presence of ore with sulfide content.
T2  - Annual Meeting of the German Geophysical Society
CY  - , Potsdam (Germany)
M2  - Potsdam, Germany
LB  - PUB:(DE-HGF)6
UR  - https://juser.fz-juelich.de/record/852673
ER  -