Apparent shear stress acting on a vertical interface between the main channel and floodplain in a compound channel serves to quantify the momentum transfer between sub sections of this cross section. In this study, three soft computing methods are used to simulate apparent shear stress in prismatic compound channels. The Genetic Algorithm Artificial neural network (GAA), Genetic Programming (GP...

During the Tasman Project of Seafloor Magnetotelluric Exploration recordings were made of the natural magnetic and electric field variations along a line of seafloor sites crossing the Tasman Sea. Using these data and additional magnetic field recordings made on the Australian continent the pattern of geomagnetic induction in the Tasrnan Sea Region is examined. An investigation of the seafloor ...

The magnetotelluric (MT) sounding of a layered Earth model involving transitional layer has been widely studied, and MT responses the with dipping anisotropic conductivity have also treated. However, incorporating both anisotropy seldom considered. analytical solution such geoelectrical including three layers was derived in this study. middle exponentially varying depth, which covered by homoge...

The ice-rich dwarf planet Ceres is the largest object in main asteroid belt and thought to have a brine or mud layer at depth of tens kilometers. Furthermore, recent surface deposits brine-sourced material imply shallow feeder structures such as sills dikes. Inductive sounding can be performed using solar wind source, was done for Moon during Apollo. However, magnetotelluric method -- measuring...

s, 28, 719–722. Commer, M., and G. Newman, 2008a, New advances in three-dimensional controlled source electromagnetic inversion: Geophysical Journal International, 172, no. 2, 513–535, doi:10.1111/j.1365-246X.2007.03663.x. ———, 2008b, Optimal conductivity reconstruction using three-dimensional joint and model-based inversion for controlled-source and magnetotelluric data: 78th Annual Internatio...

The magnetotelluric (MT) method has become more widely used in hydrocarbon exploration. The inversion of MT data, which can determine the electrical structure of subsurface, is a nonlinear and multimodal optimization problem. Particle swarm optimization(PSO) algorithm is a good solver for this geophysical inversion problem, whereas it has a shortage of heavy computation time. An improved parall...