Upper lithospheric seismic velocity structure across the Pripyat Trough and the Ukrainian Shield along the EUROBRIDGE'97 profile

Thybo, Hans; Janik, Tomasz; Omelchenko, Victor; Grad, M.; Garetsky, R. G.; Belinsky, A.; Karatayev, G. I.; Zlotski, G.; Knudsen, Martin; Sand, R.; Yliniemi, Juho; Tiira, Timo; Luosto, U.; Komminaho, Kari; Giese, Rüdiger; Guterch, A.; Lund, C.‐E.; Kharitonov, O.M.; Ilchenko, T.; Lysynchuk, Dmytro; Skobelev, V. M.; Doody, J. J.

doi:10.1016/s0040-1951(03)00200-2

Cited by 61 publications

(44 citation statements)

References 27 publications

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“…Thybo et al (2003) showed that vertical-component registrations from the EUROBRIDGE'97 contain strong S waves. Similar observations were made by Hrubcová et al (2005), Grad et al (2008) and Grad et al (2009).…”

mentioning

confidence: 99%

3-D modelling of the crustalS-wave velocity structure from active source data: application to the Eastern Alps and the Bohemian Massif

Behm

2009

Geophysical Journal International

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S U M M A R YHere, I present results from 3-D modelling of crustal S-wave velocities in the eastern part of the Eastern and Southern Alps and the southern part of the Bohemian Massif. Data were acquired between 2000 and 2003 during three large 3-D wide-angle reflection and refraction experiments. The surveys aimed at the P-wave velocity structure of the crust and uppermost mantle, and therefore only vertical-component geophones were used. Nevertheless, many shot gathers show strong S waves, in particular refractions from the crust (Sg waves) and reflections from the Moho discontinuity (SmS waves). Compared to P-wave arrivals, the traveltimes of S waves can only be picked with a relatively large uncertainty. Furthermore, approximately 80 per cent of the data represent crossline recordings on which it is more difficult to assign certain phases to the arrivals. For these reasons, I apply signal detection and stacking routines to put the 3-D data set to best possible use. Concerning the crust, a smooth 3-D velocity model is based on refractions from within the crust (Sg), whereas the crust-mantle boundary is modelled by reflections (SmS) from the Moho discontinuity. Considering that the projects were designed for P-wave studies, the proposed methodology provides surprisingly detailed images.S-wave velocities and Poisson's ratio correlate with tectonic units and show significant features in the upper crust. A high Poisson's ratio is observed in the Moravian part of the Bohemian Massif, in the Southern Alps and in the Northern Calcareous Alps and their basement within the Eastern Alps. The middle and lower crust are only covered in the Moldanubian part of the Bohemian Massif, where Poisson's ratio is low. This would favour a felsic composition.The evaluation of SmS waves is in accordance with previously proposed P-wave velocity models, which indicate a fragmentation into three crustal blocks in the centre of the Eastern Alps.

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mentioning

confidence: 99%

3-D modelling of the crustalS-wave velocity structure from active source data: application to the Eastern Alps and the Bohemian Massif

Behm

2009

Geophysical Journal International

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“…Destructive plate boundaries can be identified by offsets of an otherwise smooth Moho boundary derived from controlled source seismic data (e.g., Abramovitz and Thybo, 2000;Kissling et al, 2006;Waldhauser et al, 1998). However, continental transform or strike-slip faults may exist without significant offsets of the Moho boundary and are thus difficult to identify (Thybo et al, 2003;Weber et al, 2006Weber et al, , 2009Zhao et al, 2001).…”

Section: Alp 2002 Areamentioning

confidence: 99%

Crustal and Lithospheric Structures Between the Alps and East European Craton from Long-Range Controlled Source Seismic Experiments

Guterch

Grad²,

Keller³

et al. 2015

Treatise on Geophysics

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“…Â ëèòåðàòóðå ïðèâåäåíû äâà âàðèàíòà ñåéñ-ìè÷åñêîé ìîäåëè âäîëü ïðîôèëÿ Åâðîáðèäae-97 [Èëü÷åíêî, 2002;Thybo et al, 2003]. Â ïåðâîì âà-ðèàíòå [Èëü÷åíêî, 2002] â ðàñïðåäåëåíèè V P èìå-åòñÿ ðÿä äåòàëåé, ïîçâîëÿþùèõ íàéòè èõ êîð-ðåëÿöèþ ñ ãåîýëåêòðè÷åñêîé ìîäåëüþ (ðèñ.…”

Section: ò à á ë è ö à 2 ãåîýëåêòðè÷åñêèå ïàðàìåòðû îáúåêòîâ ïîíèAeunclassified

“…Âî âòîðîì âàðèàíòå [Thybo et al, 2003] ñåéñ-ìè÷åñêèé ðàçðåç ïðåäñòàâëåí áîëåå ïëàâíûìè èçìåíåíèÿìè V P . Îáúåêò Î5 ïîïàäàåò â çîíó ïî-íèaeåííûõ ñêîðîñòåé, êîòîðàÿ â ãîðèçîíòàëü-íîì íàïðàâëåíèè ïî÷òè â äâà ðàçà øèðå, ÷åì â ïåðâîì âàðèàíòå.…”

Section: ò à á ë è ö à 2 ãåîýëåêòðè÷åñêèå ïàðàìåòðû îáúåêòîâ ïîíèAeunclassified

Geoelectric model of consolidated Earth's crust and upper mantle along the geotraverse EUROBRIDGE-97

Astapenko¹,

Logvinov

2014

Geofizicheskiy Zhurnal

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Upper lithospheric seismic velocity structure across the Pripyat Trough and the Ukrainian Shield along the EUROBRIDGE'97 profile

Cited by 61 publications

References 27 publications

3-D modelling of the crustalS-wave velocity structure from active source data: application to the Eastern Alps and the Bohemian Massif

3-D modelling of the crustalS-wave velocity structure from active source data: application to the Eastern Alps and the Bohemian Massif

Crustal and Lithospheric Structures Between the Alps and East European Craton from Long-Range Controlled Source Seismic Experiments

Geoelectric model of consolidated Earth's crust and upper mantle along the geotraverse EUROBRIDGE-97

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