5:15 PM - 6:30 PM
[SEM35-P10] Large-scale electrical resistivity structure around the Western Part of Shikoku
Keywords:electrical resistivity structure, Bungo Channel, slow slip events
In this presentation, we will report the present state of wideband MT surveys and estimation of a large-scale electrical resistivity structure. As of February, 2016, MT surveys were performed at 28 sites by using Phoenix wideband MT instruments. In the most of sites, high quality MT responses were obtained using the BIRRP code (Chave and Thomson, 2004) for the period range 0.01 to 10,000sec. The spatial distributions of the phase tensor ellipses and the induction vectors suggest that resistivity contrasts are located around SSEs. We will show the outlines of our research project, characteristics of obtained MT responses, and report preliminary results of three-dimensional inversions.