Recent Progress of WSINV3DMT

In early of 2006, WSINV3DMT which is a three-dimensional inversion software for Magnetotelluric (MT) data, was released to the MT community. In its original version, WSINV3DMT was capable of inverting only the components of the impedance tensor Z. Currently, WSINV3DMT has been upgraded to invert the vertical magnetic transfer function (VTF) and also a joint inversion of both types of data. In addition, bathymetry and topography can be incorporated to make the model more realistic, and to allow for bathymetric/topographic effects. To efficiently reduce both computational time and memory requirements, WSINV3DMT has also been coded with the Message Passing Interface (MPI) so that the data from each period is distributed and processed on one computer node. Here, we present inversion results from EXTECH data inverting VTF data alone, and jointly with impedances. Advantage of joint inversion will be provided. We also show inversion results from OBEM data collected in the Philippine Sea with real bathymetry included in the inversion. Some discussion about future research on WSINV3DMT will be included.