Working Group leader: Heiner Igel
Imaging requires high quality data observed in dense seismic arrays and/or local/global seismic networks. It is important to note that with large scale projects like NERIES (structuring European seismic networks), USArray, VEBSN and many others, massive quantities of seismic waveform data are becoming available.
This implies that data mining becomes an issue for highperformance computing systems. The last decade has seen a paradigm shift from seismic eventbased observations to permanent observations of ground motions including oceanic and atmosphericallydriven background noise (microseismicity and seismic hum).
The analysis of noise has led to a new methodology to image the Earth’s interior without the need for earthquake sources. Eventbased and virtual source data – if processed properly – may change our view of the Earth.
The seismic networks are becoming so dense that – at least in principle – highresolution imaging of the Earth’s interior and of seismic sources is becoming possible at all scales.
In TIDES research topics, computational simulations will play a leading role in hypothesis testing and data modelling. In addition to the existing links between the TIDES participants and their local supercomputing centres, TIDES will be associated with the European supercomputer grid infrastructure through VERCE and EPOS.