ScanArray - Seismological study of the connection between topographic change and deep structure in Fennoscandia
- 1Istanbul Technical University, Eurasia Institute of Earth Sciences, Istanbul, Turkey (h.thybo@gmail.com)
- 2Schoool of Earth Sciences, China University of Geosciences Wuhan, China
- 3Center for Earth Evolution and Dynamics (CEED), University of Oslo, Norway
- 4Karlsruhe Institute of Technology, Karlsruhe, Germany
- 5GFZ-Potsdam, Potsdam, Germany
- 6Freie Universität Berlin, Berlin, Germany
- 7Australian National University, Canberra, ACT, Australia
- 8Department of Geophysics, Stanford University, California, USA
- 9GEOMAR Helmholtz Center for Ocean Research, Kiel, Germany
- 10Aarhus University, Aarhus, Denmark
- 11Uppsala University, Uppsala, Sweden
- 12University of Bergen, Bergen, Norway
The Baltic Shield is located in northern Europe. It was formed by amalgamation of a series of terranes and microcontinents during the Archean to the Paleoproterozoic, followed by significant modification in Neoproterozoic to Paleozoic time. The Baltic Shield includes a high mountain range, the Scandes, along its western North Atlantic coast, despite being a stable craton located far from any active plate boundary.
The ScanArray international collaborative program has acquired broad band seismological data at 192 locations in the Baltic Shield during the period between 2012 and 2017. The main objective of the program is to provide seismological constraints on the structure of the lithospheric crust and mantle as well as the sublithospheric upper mantle. The new information will be applied to studies of how the lithospheric and deep structure affects observed fast topographic change and geological-tectonic evolution of the region. The recordings are of very high quality and are used for analysis by suite of methods, including P- and S-wave receiver functions for the crust and upper mantle, surface wave and ambient noise inversion for seismic velocity, body wave P- and S- wave tomography for upper mantle velocity structure, and shear-wave splitting measurements for obtaining bulk anisotropy of the upper and lower mantle. Here we provide a short overview of the data acquisition and initial analysis of the new data with focus on parameters that constrain the fast topographic change in the Scandes.
How to cite: Thybo, H., Bulut, N., Grund, M., Mauerberger, A., Makushkina, A., Artemieva, I., Balling, N., Gudmundsson, O., Maupin, V., Ottemøller, L., Ritter, J., and Tilmann, F.: ScanArray - Seismological study of the connection between topographic change and deep structure in Fennoscandia, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-14385, https://doi.org/10.5194/egusphere-egu21-14385, 2021.
