The NARS-DEEP project

H. Paulssen; B. G. Bukchin; A. P. Emelianov; M. Lazarenko; E. Muyzert; R. Snieder; T. B. Yanovskaya

doi:10.1016/S0040-1951(99)00186-9

The NARS-DEEP project

H. Paulssen^*, B. G. Bukchin, A. P. Emelianov, M. Lazarenko, E. Muyzert, R. Snieder, T. B. Yanovskaya

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

The NARS-DEEP project involves the deployment of broadband seismological stations in Russia, Belarus and the Ukraine. Six stations were installed in 1995, two in 1997, and more stations were to be installed from 1998 onwards. The NARS-DEEP project was initiated as a temporary deployment, but funding from the European Community enabled the stations to become permanent. In this paper we present first results of the NARS-DEEP project. A surface waveform inversion for the upper mantle structure along a profile from Egypt to Spitsbergen shows evidence for strong variations in the shear-velocity structure for the different tectonic units. The most striking features of the model comprise strong lithospheric anisotropy beneath the Eastern Mediterranean and a lithospheric thickness of approximately 200 km beneath the shield areas. The crustal structure beneath the seismic station in St. Petersburg was investigated using the receiver function method. The results of a Monte Carlo inversion for the receiver functions of this station show evidence for a sedimentary layer with a thickness of less than 1 km overlying an upper crustal layer extending to a depth of approximately 16 km. The Moho depth cannot be resolved from the receiver functions of this station.

Original language	English
Pages (from-to)	1-8
Number of pages	8
Journal	Tectonophysics
Volume	313
Issue number	1-2
DOIs	https://doi.org/10.1016/S0040-1951(99)00186-9
Publication status	Published - 10 Nov 1999

Funding

The NARS-DEEP project would not have been possible without the dedication of numerous people who actively supported the field operation and the logistics of operating a network of broadband seismometers: van Wettum, Karpinsky, Kolkovsky, Mikhailik and Savin. We thank Paul Fleuren who carried out much of the research on the crustal structure beneath St. Petersburg. The NARS-DEEP project was financially supported by the Netherlands Organisation for Scientific Research (NWO) through their programme `Cooperation with the Russian Federation' (project 047-003-035), the Netherlands Geoscience Foundation (GOA) through hardware investment grants, the International Association for the promotion of cooperation with scientists from the independent states of the former Soviet Union (INTAS project 93-1076), and the European Community through the INCO–COPERNICUS contract ERBIC15CT960207. The work of E. Muyzert was supported through a grant (751.360.001) of the Netherlands Geoscience Foundation (GOA). This work was conducted under the programme of the Dutch national research school, the Vening Meinesz Research School of Geodynamics.

Keywords

Crustal structure
Lithosphere
Russian platform
Shear-velocity
Surface waves
Upper mantle

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10.1016/S0040-1951(99)00186-9

Cite this

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The NARS-DEEP project

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