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Pregled bibliografske jedinice broj: 504209

Časopis

Autori: Stipčević, Josip; Tkalčić, Hrvoje; Herak, Marijan; Markušić, Snježana; Herak, Davorka
Naslov: Crustal and uppermost mantle structure beneath the External Dinarides, Croatia, determined from teleseismic receiver functions
Izvornik: Geophysical journal international (0956-540X) 185 (2011), 3; 1103-1119
Vrsta rada: članak
Ključne riječi: Body waves; Continental tectonics: compressional; Crustal structure; Europe
Sažetak:
Broad-band seismograms of teleseismic events recorded at the Croatian Seismological Network were used to compute radial receiver functions (RFs) for eight locations in the External Dinarides. Waveform modelling was performed by a multistep matching of the theoretical RFs computed for horizontally layered 1-D isotropic models with the averaged observed RFs. Constraints from existing deep seismic sounding profiles, traveltime curves of regional crustal seismic phases and intuitive inferences gained from interactive forward modelling were used to construct initial 1-D models of the Earth. A non-linear inversion was performed in two steps—a grid search followed by the Monte Carlo search for the model parameters. Concurrently, RFs from different azimuths were stacked to obtain trade-off estimates of crustal thickness versus Vp/Vs ratios. The Moho depths were found in the range from around 40 km for Northern Adriatic stations to over 55 km for stations in the central part of the External Dinarides. Comparing our results with recent maps of the Moho topography inferred from seismic and gravimetric data, we find that for some stations the agreement between our results and the existing Moho maps is very good. For the others, we find the Mohorovičić discontinuity to be considerably deeper, indicating some of the thickest crust in Europe. Although it is plausible that such a deep Moho could be a consequence of a complex tectonic setting of the region (e.g. overlapping of two large tectonic units—the Adriatic microplate and the Dinarides), this result will have to be verified in the future studies using various other geophysical techniques.
Projekt / tema: 119-1193086-1315, 119-1193086-1314, 195-1951293-3155
Izvorni jezik: ENG
Rad je indeksiran u
bazama podataka:
Current Contents Connect (CCC)
Scopus
SCI-EXP, SSCI i/ili A&HCI
Science Citation Index Expanded (SCI-EXP) (sastavni dio Web of Science Core Collectiona)
Kategorija: Znanstveni
Znanstvena područja:
Geologija
URL Internet adrese: http://onlinelibrary.wiley.com/doi/10.1111/j.1365-246X.2011.05004.x/abstract;jsessionid=2FBE22914DF039C006C00BFF0203C5CA.d02t03
Broj citata:
Altmetric:
DOI: 10.1111/j.1365-246X.2011.05004.x
URL cjelovitog teksta:
Google Scholar: Crustal and uppermost mantle structure beneath the External Dinarides, Croatia, determined from teleseismic receiver functions
Upisao u CROSBI: mherak@geolpmf.hr (mherak@geolpmf.hr), 28. Vel. 2011. u 14:06 sati



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