Preprints
https://doi.org/10.5194/essd-2022-397
https://doi.org/10.5194/essd-2022-397
 
29 Nov 2022
29 Nov 2022
Status: this preprint is currently under review for the journal ESSD.

Moho depths beneath the European Alps: a homogeneously processed map and receiver functions database

Konstantinos Michailos1, György Hetényi1,2, Matteo Scarponi1,3, Josip Stipčević4, Irene Bianchi5,6, Luciana Bonatto7, Wojciech Czuba8, Massimo Di Bona6, Aladino Govoni6, Katrin Hannemann9, Tomasz Janik8, Dániel Kalmár2,10, Rainer Kind11,13, Frederik Link12, Francesco Pio Lucente6, Stephen Monna6, Caterina Montuori6, Stefan Mroczek11,13, Anne Paul14, Claudia Piromallo6, Jaroslava Plomerová3, Julia Rewers8, Simone Salimbeni6, Frederik Tilmann11,13, Piotr Środa8, Jérôme Vergne15, and the AlpArray-PACASE Working Group Konstantinos Michailos et al.
  • 1Institute of Earth Sciences, University of Lausanne, Lausanne, Switzerland
  • 2Kövesligethy Radó Seismological Observatory, Institute of Earth Physics and Space Science, Budapest, Hungary
  • 3Institute of Geophysics, Czech Academy of Sciences, Prague, Czech Republic
  • 4Department of Geophysics, Faculty of Science, University of Zagreb, Zagreb, Croatia
  • 5Department of Meteorology and Geophysics, University of Vienna, Vienna, Austria
  • 6Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy
  • 7Department of Physics, University of La Serena, La Serena, Región de Coquimbo, Chile
  • 8Department of Seismic Lithospheric Research, Institute of Geophysics Polish Academy of Sciences, Warszawa, Poland
  • 9Westfälische Wilhelms Universität Münster, Institut für Geophysik, Münster, Germany
  • 10MTA EK Lendület Pannon LitH2Oscope Research Group, Institute of Earth Physics and Space Science, Budapest, Hungary
  • 11Freie Universität Berlin, Institute for Geological Sciences, Malteserstr. 74-100, 12249 Berlin, Germany
  • 12Institute of Geosciences, Goethe University Frankfurt, Frankfurt, Germany
  • 13GFZ German Research Centre for Geosciences, Telegrafenberg, 14473 Potsdam, Germany
  • 14Univ. Grenoble Alpes, Univ; Savoie Mont Blanc, CNRS, IRD, UGE, ISTerre, 38000 Grenoble, France
  • 15Institut Terre Environnement de Strasbourg, University of Strasbourg, France
  • A full list of the authors appears at the end of the paper.

Abstract. Since the 1980s a number of active and passive seismic experiments have revealed significant information about the Earth’s crust in the broader European Alpine region. In this paper, we use seismic waveform data from the AlpArray Seismic Network and three other temporary seismic networks, to perform receiver function (RF) calculations and time−to−depth migration to update the knowledge of the Moho discontinuity beneath the broader European Alps. In particular, we set up a 5 homogeneous processing scheme to compute RFs using the time-domain iterative deconvolution method, and apply consistent quality control to yield 107,633 high-quality RFs. We then perform time−to−depth migration in a newly implemented 3D spherical coordinate system and using a European-scale reference P and S wave velocity model. This approach, together with the dense data coverage, provide us with a 3D migrated volume, from which we present migrated profiles that reflect the first-order crustal thickness structure. We create a detailed Moho map by manually picking the discontinuity in a set of orthogonal 10 profiles covering the entire area. We make the RF dataset, the software for the full processing workflow, as well as the Moho map, openly available; these open-access datasets and results will allow other researchers to build on the current study.

Konstantinos Michailos et al.

Status: open (until 08 Feb 2023)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on essd-2022-397', Anonymous Referee #1, 08 Jan 2023 reply
  • RC2: 'Comment on essd-2022-397', Anonymous Referee #2, 27 Jan 2023 reply

Konstantinos Michailos et al.

Data sets

European Alps Receiver Function Database Michailos, Konstantinos and Hetényi, György and Scarponi, Matteo and Stipčević, Josip and Bianchi, Irene and Bonatto, Luciana and Czuba, Wojciech and Di Bona, Massimo and Govoni, Aladino and Hannemann, Katrin and Janik, Tomasz and Kalmár, Dániel and Kind, Rainer and Link, Frederik and Lucente, Francesco Pio and Monna, Stephen and Montuori, Caterina and Mroczek, Stefan and Paul, Anne and Piromallo, Claudia and Plomerová, Jaroslava and Rewers, Julia and Salimbeni, Simone and Tilmann, Frederik and Środa, Piotr and Vergne, Jérôme https://doi.org/10.5281/zenodo.7331684

Konstantinos Michailos et al.

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Short summary
We examine the spatial variability of the crustal structure beneath the broader European Alpine region by using teleseismic earthquake information (receiver functions) on a large amount of seismic waveform data. We compile a new Moho depth map of the broader European Alps and make our results freely available. We anticipate that our results can potentially provide helpful hints for interdisciplinary imaging and numerical modeling studies.