Abstract: A method for a multichannel geophysical data acquisition system is provided in the field of electrical resistivity tomography. Individual and autonomous node operating systems are provided. Separate communication channels for upstream and downstream data transfer, high voltage transfer and synchronization signals are provided. A novel use of high voltage isolation barriers is also provided. A direct memory access data transfer process is provided.

Abstract: A method for a multichannel geophysical data acquisition system is provided in the field of electrical resistivity tomography. Individual and autonomous node operating systems are provided. Separate communication channels for upstream and downstream data transfer, high voltage transfer and synchronization signals are provided. A novel use of high voltage isolation barriers is also provided. A direct memory access data transfer process is provided.

Abstract: A method for a multichannel geophysical data acquisition system is provided in the field of electrical resistivity tomography. Individual and autonomous node operating systems are provided. Separate communication channels for upstream and downstream data transfer, high voltage transfer and synchronization signals are provided. A novel use of high voltage isolation barriers is also provided. A direct memory access data transfer process is provided.

Abstract: A method for a multichannel geophysical data acquisition system is provided in the field of electrical resistivity tomography. Individual and autonomous node operating systems are provided. Separate communication channels for upstream and downstream data transfer, high voltage transfer and synchronization signals are provided. A novel use of high voltage isolation barriers is also provided. A direct memory access data transfer process is provided.

Abstract: A thermodynamic housing for a geophysical data acquisition system is provided. The housing includes a novel enclosure cooling system with strategically placed ducting and insulation which maintains proper controller temperature and elevated temperature ambient environments. A novel node enclosure is provided which includes a fail safe 4 bar linkage toggle to ground stakes which enhances physical stability and electrical connectivity.

Abstract: An electrical resistivity tomography system having a novel electrode geometry and method of use is provided. The novel electrode geometry radiates a uniform electric field which produces greatly improved resistivity data.

Abstract: The invention disclosed provides a network of master controller and node arrays which all communicate with a system server, a client device and an administrator device. Each of the master controller and node arrays is equipped with an ERT system, and various seismic sensors to monitor a geographic perimeter for surface and sub-surface trigger events. Upon detection of a trigger event, each of the master controller and node arrays executes a sensor monitoring routine to determine the approximate path of travel, velocity, acceleration of the trigger event. The master controller and node arrays further conduct an ERT survey to determine the presence of anomalies which may indicate sub-surface activity related to the trigger event.

Abstract: A method for a multichannel geophysical data acquisition system is provided in the field of electrical resistivity tomography. Individual and autonomous node operating systems are provided. Separate communication channels for upstream and downstream data transfer, high voltage transfer and synchronization signals are provided. A novel use of high voltage isolation barriers is also provided. A direct memory access data transfer process is provided.

Abstract: A method for a multichannel geophysical data acquisition system is provided in the field of electrical resistivity tomography. Individual and autonomous node operating systems are provided. Separate communication channels for upstream and downstream data transfer, high voltage transfer and synchronization signals are provided. A novel use of high voltage isolation barriers is also provided. A direct memory access data transfer process is provided.

Abstract: A system for interpreting electrical resistivity tomography (ERT) survey data and method of use is provided. The system analyzes resistivity data and associated test parameter matrices and interpretation matrices as input to a convolutional and an artificial neural network in order to determine whether or not a set of subsurface characteristics are present.

Abstract: A system that considers meteorological data and geophysical data on a recursive basis to generate advanced warning of conditions which may cause imminent damage to infrastructure as a result of upcoming or recent meteorological and geophysical characteristics for any given geographic region is provided. A set of novel seismic risk factors, surficial geology rating factors, expansive soils rating factors, soil hydrology rating factors, topography rating factors, climatic rating factors, seismic activity rating factors, seismic fault rating factors and global weighting factors is provided.

Abstract: A method of multichannel acquisition and geophysical data is provided. Individual and autonomous node operating systems are provided. Separate communication channels for upstream and downstream data transfer, high voltage transfer and synchronization signals are provided. The method provides for an alternating waveform of injected current to maximize data precision and minimize soil ionization. Node type assignment interleaving is also provided to compress survey time. Self calibration of nodes is provided as is self addressing of a node array.

Abstract: An architecture for a multichannel geophysical data acquisition system is provided in the field of electrical resistivity tomography. Individual and autonomous node operating systems are provided. Separate communication channels for upstream and downstream data transfer, high voltage transfer and synchronization signals are provided. A novel use of high voltage isolation barriers is also provided. A direct memory access data transfer process is provided.