Open AccessSingle weighted laterally constrained inversion of airborne transient electromagnetic data with sharp boundary
Author(s) -
Juntao Lu,
Da Lei,
You Zhang,
Feihu Zheng
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/660/1/012128
Subject(s) - inversion (geology) , boundary (topology) , boundary value problem , geology , geometry , inverse transform sampling , mathematical analysis , algorithm , geodesy , mathematics , physics , optics , seismology , surface wave , tectonics
Traditional laterally constrained inversion (LCI) can quickly and efficiently invert large geophysical data with minimizing the difference between adjacent model parameters. However when processing the data with large boundary differences, the inversion generates the result whoes the boundaries are poorly fitness with the actual underground geology. In order to overcome this problem, some specific measurement stations of original LCI has been adjusted to weaken the horizontal continuity constraint of the horizontal direction near the sharp boundary. The simulation results show that the determinations of station and weights value depend on the thickness or depth change at sharp boundary. In this paper, we employed single weighted laterally constrained inversion (SWLCI) method on the model with sharp boundary. The result showed that SWLCI can improve both the recovering of sharp boundary and the stability of inversion.