We present a new, consistently processed seismicity catalogue for the Eastern and Southern Alps, based on the temporary dense Swath-D monitoring network. The final catalogue includes 6,053 earthquakes for the time period 2017-2019 and has a magnitude of completeness of −1.0ML. The smallest detected and located events have a magnitude of −1.7ML.
Aimed at the low to moderate seismicity in the study region, we generated a multi-level, mostly automatic workflow which combines a priori information from local catalogues and waveform-based event detection, subsequent efficient GPU-based event search by template matching, P & S arrival time pick refinement and location in a regional 3-D velocity model. The resulting seismicity distribution generally confirms the previously identified main seismically active domains, but provides increased resolution of the fault activity at depth. In particular, the high number of small events additionally detected by the template search contributes to a more dense catalogue, providing an important basis for future geological and tectonic studies in this complex part of the Alpine orogen.
The new data set along the TRANSALP geophysical transect in the European Alps consists of three types: (i) new apatite and zircon fission data, (ii) a MOVE™ structural-kinematic model for the tectonic evolution along the transect since the Oligocene, and (iii) PECUBE input/output thermo-kinematic model data corresponding to the structural-kinematic MOVE™ model. The fission track data are provided as *.csv data tables formatted to be ideally opened and viewed in RadialPlotter (Vermeesch, 2009) or alternatively in any spreadsheet editor (e.g., Microsoft Excel). The MOVE™ files require the software MOVE™ licensed by Petroleum Experts. The PECUBE input/output files can be opened with any text editor (e.g., Microsoft Visual Code) or data analysis software (e.g., MATLAB™).