The AlpArray Seismic Network: A Large-Scale European Experiment to Image the Alpine Orogen

György Hetényi 1 Irene Molinari 2 John Clinton 2 Götz Bokelmann István Bondár 3 Wayne Crawford 4 Jean-Xavier Dessa 5 Cécile Doubre 6 Wolfgang Friederich 7 Florian Fuchs Domenico Giardini Zoltán Gráczer 3 Mark Handy 8 Marijan Herak Yan Jia Edi Kissling 9 Heidrun Kopp 10 Michael Korn Lucia Margheriti 11 Thomas Meier 12 Marco Mucciarelli 13 Anne Paul 14 Damiano Pesaresi 13 Claudia Piromallo 11 Thomas Plenefisch 15 Jaroslava Plomerová Joachim Ritter Georg Rümpker 16 Vesna Šipka Daniele Spallarossa 17 Christine Thomas Frederik Tilmann Joachim Wassermann 18 Michael Weber 19 Zoltán Wéber Viktor Wesztergom 20 Mladen Živčić 21
Abstract : The AlpArray programme is a multinational, European consortium to advance our understanding of orogenesis and its relationship to mantle dynamics, plate reorganizations , surface processes and seismic hazard in the Alps-Apennines-Carpathians-Dinarides orogenic system. The AlpArray Seismic Network has been deployed with contributions from 36 institutions from 11 countries to map physical properties of the lithosphere and astheno-sphere in 3D and thus to obtain new, high-resolution geophysical images of structures from the surface down to the base of the mantle transition zone. With over 600 broadband stations Electronic supplementary material The online version of this article (https ://doi. 1 3 operated for 2 years, this seismic experiment is one of the largest simultaneously operated seismological networks in the academic domain, employing hexagonal coverage with station spacing at less than 52 km. This dense and regularly spaced experiment is made possible by the coordinated coeval deployment of temporary stations from numerous national pools, including ocean-bottom seismometers, which were funded by different national agencies. They combine with permanent networks, which also required the cooperation of many different operators. Together these stations ultimately fill coverage gaps. Following a short overview of previous large-scale seismological experiments in the Alpine region, we here present the goals, construction, deployment, characteristics and data management of the AlpArray Seismic Network, which will provide data that is expected to be unprecedented in quality to image the complex Alpine mountains at depth.
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György Hetényi, Irene Molinari, John Clinton, Götz Bokelmann, István Bondár, et al.. The AlpArray Seismic Network: A Large-Scale European Experiment to Image the Alpine Orogen. Surveys in Geophysics, Springer Verlag (Germany), 2018, 39 (5), pp.1009-1033. ⟨10.1007/s10712-018-9472-4⟩. ⟨hal-02156723⟩

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