Abstract: A method for the reduction of data logging in seismic data processing, in which data are transmitted between a plurality of data acquisition devices with a plurality of channels and a central receiving and recording device by using a plurality of transmission modules each of which is essentially allocated to a date acquisition device and each channel is assigned corresponding seismic traces comprises, providing real physical seismic traces and synthetic seismic traces, inserting the synthetic traces between the real traces, locating the seismic traces with relative uniform, physical distance, assigning corresponding simulated channels to the synthetic traces, assigning to each simulated channel an estimate of the real value for a corresponding physical channel, and adapting each estimated value to the values of at least one adjacent physical channel assigned the corresponding real physical traces.

Abstract: Transmitting information from a central receiver and recorder utilizes plural series-connected transmission modules, each connected to a respective data acquisition unit. The transmission modules are sequentially connected along plural transmission lines, at least two of which are outgoing data transmission lines for transmitting information from the central receiver and recorder to the acquisition units. At least two other lines are incoming data transmission units to the central receiver and recorder. Each transmission module has, for each outgoing line, respective line receivers, informaiton decoders, line transmitters and matrices of transmission line selectors controlled by individual information decoders, and a selector unit which ensures that a signal from a selected outgoing transmission line is transmitted to the next module on all outgoing transmission lines.