Application of second arrivals in seismic tomography inversion for the crustal structure study

• Autorzy: Majdański M. , Grad M.
• Języki publikacji: EN

Abstrakty

EN

Standard seismic tomography is based on the first arrival refracted Pg- and Pn-waves travel times and as a result gives a smooth model of the structure. Sharp discontinuities, particularly the Moho, as well as lower crust, are poorly constraint. The paper presents a modification of the standard method which allows to use later arrivals of crustal Pcr waves together with the first arrival travel times. They give better coverage by rays and better model for the whole crust. Results are illustrated by synthetic models and interpretation of experimental data from POLONAISE'97 profile P4.

Słowa kluczowe

EN

seismic tomography; travel times inversion; POLONAISE'97 ex-periment; crustal modelling

• Wydawca: Instytut Geofizyki PAN
• Czasopismo: Acta Geophysica Polonica
• Rocznik: 2005
• Tom: Vol. 53, nr 1
• Strony: 13--26
• Opis fizyczny: Bibliogr. 12 poz.

Twórcy

autor

Majdański M.

• Institute of Geophysics, Warsaw University, Pasteura 7, 02-093 Warszawa, Poland

autor

Grad M.

• Institute of Geophysics, Warsaw University, Pasteura 7, 02-093 Warszawa, Poland

Bibliografia

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• Grad, M., et al., 2003, Crustal structure of the Trans-European suture zone region along POLONAISE'97 seismic profile P4, J. Geophys. Res. 108 (Bll), 2541, doi: 10.1029/ 2003JB002426.
• Guterch, A., M. Grad, H. Thybo, G.R. Keller and POLONAISE Working Group, 1999, POLONAISE'97 - International seismic experiment between Precambrian and Varis-can Europe in Poland, Tectonophysics 314, 101-121.
• Hobro, J.W.D., 1999, Joint interface and velocity estimation in three dimensions (JIVE3D), University of Cambridge Press, Cambridge UK.
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• Środa, P., 2000, 3-D modelling of the crustal structure in the contact zone between Antarctic Peninsula and South Pacific from seismic data, Ph.D. Thesis, Institute of Geophysics, Polish Academy of Science, 112 pp. (unpublished).
• Środa, P., W. Czuba, M. Grad, A. Guterch, E. Gaczyński and POLONAISE Working Group, 2002, Three-dimensional seismic modelling of crustal structure in the TESZ region based on POLONAISE'97 data, Tectonophysics 360, 169-185
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• Zelt, C.A., 1994, ZPLOT - An interactive plotting and picking program for seismic data, Bul-lard Lab., University of Cambridge Press, Cambridge UK.
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