We have implemented a magnetotelluric observation in the Nanling-Xuancheng Ore Concentration Area within Middle-lower Yangtze River Metallogenic Belts. The data with 0.001–1000 s period was collected at 843 distinct sites, and all components are handled 3-D inversion of observed dataset. present first detailed resistivity structure beneath overlying sediment strata Area. shallow parts inverted ...

The application of Rayleigh waves in geological prospecting and engineering has been widely tested used as a new method shallow seismic exploration. previous surface wave inversion needed to calculate the corresponding phase velocity that satisfied dispersion function. This process increases computation amount reduces efficiency. paper proposes solve problem by using different definition method...

The paper discusses a specific impact on reducing environmental risks that is an urgent issue modern science concerned with. At present, one of the social challenges to solve acute problem geological research – seismology. This socio-economic challenge affects significant part population. Numerous studies show precursors large earthquakes are great number micro-shocks earth’s surface, which cla...

An approach to detect and image multiple damages in a platelike structure is presented. A structural health monitoring system (SHMS) with a linear array of actuators/sensors is proposed. The integrated actuators/sensors are used to activate/receive lowest-order antisymmetric A0 mode Lamb waves. A migration technique used in geophysical exploration and seismic prospecting is adopted to interpret...

Adaptive beamforming of sensor arrays immersed into reverberant fields can easily result in the cancellation of the useful signal because of the temporal correlation existing among the direct and the reflected path signals. Wideband beamforming can somewhat mitigate this phenomenon, but adaptive solutions based on the minimum variance (MV) criterion remain nonrobust in many practical applicatio...