Geophysical Survey

The effect of hybrid models integration sequence: taking Fushun area as an example

Landslide susceptibility zoning (LSZ) is a crucial step in reducing landslide related losses, and its accuracy remains a long-standing research focus. Hybrid models are widely used, but little is known about coupling sequences. Here, we show that the accuracy of hybrid models can...

Centroid-Frequency-Guided Nonstationary Reflectivity Inversion and Its Application for Top and Bottom Interface Identification of Coalbed Methane Reservoirs

Nonstationary convolution models are widely used as the forward formula of nonstationary seismic reflectivity inversion (NSRI). This forward formula is determined by the convolution of a time-varying wavelet and reflectivity. Previous NSRI algorithms just focus on the estimation...

Three-dimensional magnetotelluric Bayesian inversion based on Stein variational gradient descent

Summary To address the challenge of assessing the reliability of three-dimensional (3D) magnetotelluric (MT) inversion results, we have developed a variational inference (VI) inversion framework (VI-MT) based on the Stein Variational Gradient Descent (SVGD) method. Through parall...

Real-time multi-station microseismic event detection via transfer learning of computer vision deep learning model

Summary With the shale gas exploration and development into deep strata (> 3500 m in depth), weak signal detection becomes more challenging and vital in surface-based microseismic monitoring. Most existing deep learning approaches are trained on synthetic or single-station data,...