With global warming, Arctic sea ice, as one of the important factors regulating climate, has put forward new requirements for research. At present, ground penetrating radar (GPR) is a powerful tool to obtain structure ice. Traditional offset imaging techniques no longer meet research requirements, and two-parameter full waveform inversion (FWI) method received widespread attention. To solve hig...

Gravity data inversion is one of the important steps in the interpretation of practical gravity data. The inversion result can be obtained by minimization of the Tikhonov objective function. The determination of an optimal regularization parameter is highly important in the gravity data inversion. In this work, an attempt was made to use the active constrain balancing (ACB) method to select the...

Shear-wave velocity ( ) is an important parameter used for site characterization in geotechnical engineering. However, dispersion curve inversion is challenging for most inversion methods due to its high non-linearity and mix-determined trait. In order to overcome these problems, in this study, a joint inversion strategy is proposed based on the particle swarm optimization (PSO) algorithm. The ...