10.5880/GFZ.4.5.igmas.v.1.3 eng dataset GFZ German Research Centre for Geosciences datapub@gfz-potsdam.de http://www.gfz-potsdam.de Helmholtz-Centre Potsdam - GFZ German Research Centre for Geosciences Helmholtz-Centre Potsdam - GFZ German Research Centre for Geosciences pointOfContact 2023-12-09 urn:ogc:def:crs:EPSG:4326 IGMAS+: Interactive Gravity and Magnetic Application System 2023-12-09 revision 2020-11-03 creation doi:10.5880/GFZ.4.5.igmas.v.1.3 Anikiev, Denis GFZ German Research Centre for Geosciences, Potsdam, Germany author Götze, Hans-Jürgen Christian-Albrecht University of Kiel, Kiel, Germany author Meeßen, Christian GFZ German Research Centre for Geosciences, Potsdam, Germany author Plonka, Christian GFZ German Research Centre for Geosciences, Potsdam, Germany author Scheck-Wenderoth, Magdalena GFZ German Research Centre for Geosciences, Potsdam, Germany author Schmidt, Sabine Christian-Albrecht University of Kiel, Kiel, Germany author FU Berlin Freie Universität Berlin, Berlin, Germany originator Universität Bonn Universität Bonn, Bonn, Germany originator TU Clausthal Technical University Clausthal, Clausthal Zellerfeld, Germany originator Christian-Albrechts-Universität zu Kiel Christian-Albrechts-Universität zu Kiel, Kiel, Germany originator GFZ Data Services publisher IGMAS+ is a software for 3-D modelling of potential fields and its derivatives under the condition of constraining data and independent information. It comes with tools for forward and inverse modelling. IGMAS+ has a long history starting 1988 and has seen continuous improvement since then with input by many contributors. Since 2019, IGMAS+ is maintained and developed at The Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences by the staff of Section 4.5 – Basin Modelling and ID2 – eScience Centre with strong ongoing support by H.-J. Götze and S. Schmidt from CAU Kiel. The official webpage of IGMAS+ is available at https://www.gfz-potsdam.de/igmas/. Each major version of IGMAS+ will be assigned with a new DOI. Intermediate releases including changelog can be found at https://git.gfz-potsdam.de/igmas/igmas-releases/-/releases/. Anikiev, Denis GFZ German Research Centre for Geosciences Scientist denis.anikiev@gfz-potsdam.de pointOfContact gravity potential field magnetics modelling software EARTH SCIENCE EARTH SCIENCE > SOLID EARTH EARTH SCIENCE > SOLID EARTH > GEOMAGNETISM > MAGNETIC FIELD EARTH SCIENCE > SOLID EARTH > GRAVITY/GRAVITATIONAL FIELD NASA/GCMD Earth Science Keywords publication science > natural science > earth science > geophysics GEMET - INSPIRE themes, version 1.0 publication IGMAS+ Licence - Copyright (C) 2020 Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences IGMAS+ Licence - Copyright (C) 2020 Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences 10.3997/1365-2397.33.4.79746 DOI Cites 10.1190/1.1442546 DOI Cites 10.1007/978-3-642-27793-1_52-2 DOI Cites 10.3997/2214-4609.201400750 DOI Cites 10.1111/j.1365-2478.2011.00999.x DOI Cites 10.5194/egusphere-egu2020-8383 DOI Cites 10.23689/FIDGEO-3938 DOI IsCitedBy 10.1093/gji/ggab256 DOI IsCitedBy https://www.gfz-potsdam.de/igmas/ URL References https://git.gfz-potsdam.de/igmas/igmas-releases/-/releases/ URL References https://igmas.git-pages.gfz-potsdam.de/igmas-pages/files/IGMAS_User_Manual.pdf URL IsDocumentedBy https://igmas.git-pages.gfz-potsdam.de/igmas-pages/tutorial URL IsDocumentedBy 10.5880/GFZ.4.5.igmas DOI IsPartOf eng geoscientificInformation http://doi.org/10.5880/GFZ.4.5.igmas.v.1.3 WWW:LINK-1.0-http--link Data Access - DOI Data Access - DOI information In IGMAS+ the analytical solution of the volume integral for the gravity and magnetic effect of a homogeneous body is based on the reduction of the three-folded integral to an integral over the bounding polyhedrons (in IGMAS polyhedrons are built by triangles). The original algorithm has been extended to cover all elements of the gravity and magnetic tensors as well. Optimized storage enables extreme fast inversion of material parameters and changes to the model geometry and this flexibility makes geometry changes easy. Immediately after each change, model geometry is updated and the field components are recalculated. Because of the triangular model structure, IGMAS+ can handle complex structures (multi Z surfaces) like the overhangs of salt domes very well. It handles remanent and induced magnetisation of geological bodies and was applied to the interpretation of borehole gravity and magnetics. Modelling is constrained by structural input from independent data sources, such as seismic data, and is essential toward true integration of 3D thermal modelling or even Full Waveform Inversion. Geophysical investigations may cover huge areas of several thousand square kilometres but also models of Applied Geophysics at a meter scale. Due to the curvature of the Earth, the use of spherical geometries and calculations is necessary. IGMAS+ can be used for both flat (regional) and spherical models (global) in 3D.