Magnetotelluric data inversion with seismic data constraint

Abstract

In the paper we present a new method to invert the interior structure in the basement or ancient hidden hill by using magnetotelhiric (MT) data with seismic data constraint. We first obtain the thickness and resistivity of each layer above the basement or buried hill by the inversion of seismic and log data and create a geoelectrical model for the layers above the basement or hidden hill. Then with the reference to the inversion of 1D MT data, a geoelectrical model for the layers below the basement or hidden hill is created. On the basis of the above initial model, we present an effective and practical forward method, i.e., a model-matched approach to conduct forward inversion arithmetic. Finally, by the method of conjugate gradient iteration, a forward and backward iterative calculation is made. Taking No. 618 profile of Shengli Oil Field as an example, we have found out that the tectonic information that is unreflective in the seismic data below the basement is better reflected in the inversion result.

Non-linearity in Bayesian 1-D magnetotelluric inversion

“…Further, 1‐D MT is still used to investigate simple structure such as basin depths (Adam et al 2007), mid‐ocean ridges (Oskooi et al 2005) and geothermal fields (Cumming & Mackie 2010). The method is also applied in joint inversion with other types of geophysical data (Son & Sun 2005; Jegen et al 2009; Cumming & Mackie 2010), as well as in quality control and to construct starting models for higher dimensional inversions (Kumar et al 2010). Finally, 1‐D MT has often been used as an example problem for advances or reviews of geophysical inverse theory (e.g.…”

Seismic Oceanography Method: A Prisma Based Sistematic Review

“…Probably to make this methodology more accessible to Chinese researchers, many articles were published in Mandarin and English, however, with the same different content and DOI. (Song et al, 2010;Yang et al, 2010;Huang et al, 2012;Huang et al, 2013;Jiang-Xin et al, 2016;Jiang-Xin et al, 2017;Jun et al, 2019) As seen in figure4 and Tables 2 and 3, there is a predominance of researchers and journals where SO is published in the northern hemisphere. This directly reflects in the places where the studies were conducted.…”

“…This is observed in the term "full waveform inversion" as the motor theme in the thematic map (fig 7). Initially contrast techniques (Buffett et al, 2009;Fer et al, 2010;Eakin et al, 2011;Yamashita et al, 2011) were the most applied, followed by filtering (Mirshak et al, 2010;Song et al, 2010;Bai et al, 2015;Ker et al, 2015). Although it is a basis for this methodology, when the thematic map (fig.…”