Fourth Surface Wave research group meeting - Vienna, 03.05.2020
The meeting will take place at the University of Vienna on Sunday, May 3 2020, right before the EGU meeting (morning and afternoon).
Everybody working on these topics is invited; connection with neighboring topics is fine.
Please note the meeting into your calendars.
If you are part of Surface Wave mailing list, you will be receiving more information soon, or ask your institute AlpArray contact person.
In case you have questions already now, please contact Petr Kolinsky (Petr.Kolinsky (at) univie.ac.at).
See you in Vienna!
The organizing committee: Helle Pedersen, Thomas Meier, Anne Paul, Andrea Morelli, Petr Kolinsky, Irene Molinari, Götz Bokelmann.
---------------------------------- Past meetings ------------------------------------
Third Surface Wave research group meeting - Lyon, 21/22.02.2019
The Third Surface Wave RG meeting was hold in Lyon on the 21 and 22 February 2019, hosted by Laboratoire de Geologie de Lyon: Terre Planetes Environement - University of Lyon.
Darwin building, Fontannes room, campus de la Doua, 3-9 Rue Raphaël Dubois, 69100 Villeurbanne, France
The content of the workshop will again be oriented around your activities in relation to AlpArray. The goal here is to create scientific contacts between institutes and researchers, with special emphasis on younger colleagues. The workshop formula will be based on short contributions, from all the participants, with time for informal discussions.
13:30 – 14:00 Welcoming coffee
14:00 – 15:45 Dispersion curves and surface wave tomography
- Emanuel Kästle (Univ. Berlin): Ambient-noise processing and preliminary results from the AlpArray seismic network dataset
- Amr El-Sharkawy (Univ. Kiel): The Alpine Deep Structure from Surface Wave Tomography based on Automated Inter-station Phase Velocities
- Chloé Alder (LGLTPE, Lyon): Anisotropic structure of the Western Alps from ambient noise surface wave tomography
- Yang Lu (ISTerre, Grenoble): Ambient noise wave-equation tomography of the Alpine crust and uppermost mantle
15:45 – 16:15 Discussion
Alpine geology and interpretations of seismic models (A. Paul, ISTerre)
16:15 – 16:45 Coffe break and biscuits
16:45 – 18:00 Dispersion curves and surface wave tomography II
- Rhys Hawkins (LGLTPE, Lyon): An adjoint technique for estimation of interstation phase dispersion from ambient noise cross-correlations
- Marcel Tesch (Univ. Kiel): Observing Phase and Amplitude of Fundamental Mode Surface Wave Fields Across Dense Station Geometries — First Tests
- Jiri Kvapil (Prague): Layer-stripping approach for ambient noise tomography of the Bohemian Massif crust
- Manuel Ditz (Univ. Bochum): Preparatory Work for Surface Wavefield Tomography and Body Wave FWI of the Alpine Region
18:00 – 19:00 Discussion
Towards integration of dispersion observations & Data quality (Th. Meier, Univ. Kiel)
8:00 – 8:30 Coffee and pastries
8:30 – 10:30 Complementary observations I
- Laurent Stehly (ISTerre, Grenoble): Using ambient noise correlations iteratively for tomography
- Dorian Soergel (ISTerre, Grenoble): Imaging coda-Q in the 2-10s period band using seismic noise
- György Hétenyi (Univ. Lausanne): Overview and plans of the AlpArray Receiver Function Research Group
- Matteo Scarponi (Univ. Lausanne): High-resolution imaging of the Ivrea Geophysical Body: receiver function and gravity approach
- Angel Ling (ETH, Zurich): Using core phases for seismic waveform tomography with the AlpArray
10:30 – 11:00 Coffee break and biscuits
11:00 – 12:30 Complementary observations II
- Chao Lyu (LPG, Nantes): A new faster explicit super-high degree spectral-element method for solving wave equation by removing the CFL limit
- Petr Kolinsky (Univ. Vienna): Off-great circle imaging with AlpArray surface wave diffraction: The Cameroon plume
- Stephen Beller (Toulouse): Advances in teleseismic full-waveform inversion for high-resolution lithospheric imaging: application to the Western Alps and AlpArray perspectives
12:30 – 13:00 Discussion
Model combination and model sharing, links with other working groups, … (Th. Bodin, LGLTPE Lyon)
Discussions included a wide number of subjects such as building consistent phase and group velocity measurements, choices of observables and inversion methods, connection between ambient noise and teleseismic tomography, numerical forward modelling, exchange and access to models, data quality.
The organizing committee: Chloé Alder, Helle Pedersen, Anne Paul, Thomas Bodin, Eric Debayle.
Second Surface Wave research group meeting (Vienna, 16/17.11.2017)
The Second Surface Wave RG meeting was held in Vienna on the 16 and 17 November 2017, hosted by University of Vienna, Geozentrum and organized by Helle Pedersen, Florian Fuchs and Andrea Morelli.
Two thirds of the 24 participants (from 11 organisations) were Ph.D. students or young researchers, contributing to the overarching goal of the Working Group to create networking and collaborations between young excellent researchers in seismology in Europe. The group shared recent results from processing of AlpArray data or other datasets, ranging from local or European scale isotropic and anisotropic seismic imaging, new methodology in surface wave processing, or studies of surface wave propagation.
A special effort was made to present data quality and retrievement of AlpArray data.
14:00 Opening – Welcome by Götz Bokelmann & Helle Pedersen, Updates on latest developments
14:15 Irene Molinari/ETH – Updates from AA headquarters
14:30 Anne Paul/Grenoble – From seismic waves to geodynamics: examples from the western Alps
15:00 Sven Schippkus/Vienna – Vienna Basin ambient noise tomography using the AlpArray (includes: Ehsan Qorbani/Vienna – Ambient noise tomography of Eastern Alps)
- Jiri Kvapil/Prague – Ambient noise tomography bohemian massif
- Irene Molinari/ETH – Crustal structure of the Eastern Alps
- Josip Stipcevic/Zagreb – Ambient Noise & surface waves to map structure under Dinarides
16:30 Coffee break
17:00 Dorian Soergel/Grenoble – Anisotropy of the European lithosphere from ambient noise
- Chloé Alder/Lyon – Imaging radial anisotropy from noise correlations
- Marcel Tesch/Kiel – Properties of synthetic surface wavefields
17:15 Yang Lu/Grenoble – Surface wave tomography of the European crust and upper mantle from ambient noise
- Amr El-Sharkawy/Kiel – Surface wave tomography across the Alpine med. mobile belt
- Emanuel Kaestle/Paris – Surface wave imaging of the Alpine lithosphere
- Petr Kolinsky/Vienna – Azimuthal deviations and phase velocities of teleseismic surface waves across AA
19:00 Dinner @ Gmoakeller, Am Heumarkt 25, 1030 Vienna
9:00 Andrea Morelli/INGV – Retrieval of reflectivity structure by noise autocorrelation
- Helle Pedersen/Grenoble – Using seismic noise to monitor long term velocity variations in water reservoirs - Dimitri Zigone/Strasbourg – What’s next in Ambient Noise CCs?
10:30 Coffee break
11:00 Petr Kolinsky/Vienna – Report on AlpArray data access and data quality
- Anne Paul/Grenoble – Data access for AlpArray: test case for noise correlation Discussion on current issues with data access & quality
13:00 Conclusion & Departure
First Surface Wave research group meeting (Bologna, 17/18.11.2016)
The First Surface Wave RG meeting was held in Bologna on the 17 and 18 November 2016, hosted by INGV Bologna (Via Donato Creti 12), organized by Andrea Morelli, Helle Pedersen, Tomas Meier and Irene Molinari
The declared objectives to exchange ideas and talk about what science perspectives AlpArray is opening, to see what are the main open questions, to discuss about possible collaborations, to create scientific contacts between institutes and researchers, with special emphasis on younger colleagues.
The workshop formula was based on short contributions, from all the participants, on surface wave propagation, analysis, inversion, previous and background studies (including the wider Alpine area, extending to Europe, the Balkans, the Mediterranean), planned studies.
- Irene Molinari, ETH Zurich: Status of the AlpArray Seismic Network / 3D velocity model for the Alps and North Italy.
- Florian Fuchs, University of Vienna: Uni Vienna contribution: Surface wave array analysis & utilizing ambient noise for structural imaging and seismic hazard.
- Ehsan Qorbani, University of Vienna: Ambient noise tomography for the Southern and Eastern Alps / Contribution of Uni Vienna: Noise-based tomography and anisotropy & Polarized array analysis of
- Emanuel Kästle, UPMC Paris, ISTeP: Ambient-noise tomography of the Alpine lithosphere using Love and Rayleigh waves.
- Yang Lu, ISTerre, Université Grenoble Alpes: Surface wave tomography of the Europe from ambient seismic noise.
- Thomas Meier, University of Kiel: Rayleigh and Love phase velocities in central Europe from automated inter-station measurements, T. Meier, A. El-Sharkawy, S. Lebedev, C. Weidle, L. Cristiano.
- Andrea Morelli, INGV - Bologna: Rayleigh wave ellipticity and group speed to constrain crustal structure.
- Helle Pedersen, ISTerre, Université Grenoble Alpes: A cross section along the CIFALPS transect based on surface wave array analysis, by Chao, Pedersen, Paul, Zhao and the CIFALPS Working Group.
- Edi Kissling, ETH Zurich: AlpArray: goals and challenges.
- Enrico Serpelloni, INGV - Bologna: Three-dimensional deformations of the Alpine region.
- Rosaria Tondi, INGV - Bologna: Joint inversion of gravity and seismic data for crust and upper mantle structure.
- Anne Paul, ISTerre, Université Grenoble Alpes: A summary of results of the CIFALPS seismic experiment in the Western Alps.