Large-N array instrumentation for active and passive seismic observations

University of Helsinki, on behalf and representing the FLEX-EPOS national consortium of universities and research institutes will carry out a purchase of seismic instruments in 2020-2024. The FLEX-EPOS consortium is chaired by the University of Helsinki (UH), Department of Geosciences and Geography, and the other consortium members are as follows: University of Oulu, Faculty of Technology, Oulu Mining School (OMS), Geological Survey of Finland (GTK), University of Turku (UTU), Aalto University (AU), Finnish Geospatial Research Institute (FGI) of the National Land Survey, and VTT Technical Research Centre of Finland Ltd. The consortium will build a national pool of geophysical instruments and multi-disciplinary geophysical superstations in seismology, geomagnetism and geodesy. The present procurement is about large-N (number) array instrumentation for seismic active and passive seismic observations.

Large-N (number) array instrumentation for seismic active and passive seismic observations. 600 nodes, with an option to purchase 0-600 more, i.e., altogether up to 1200 nodes. The instrumentation is meant for registering and storing data originating from various types of seismic sources in wide frequency band. Depending on the experiment, the data are for example to be used for 3D modeling of geological structures, such as ore deposits, faults and intrusions using active-source imaging and/or passive seismic methods (e.g. seismic interferometry methods). The equipment could be also used for microseismic monitoring. Typically, development of the seismic imaging methods is one key reason for the data acquisition.