GNGTS 2014 - Atti del 33° Convegno Nazionale

part of central Europe, allowing us to interpret the EML as caused by the union of the effect of Teisseyre-Tornquist dislocation and of the anomalies due to bodies with a strong reverse magnetization within the Paleozoic platform. In particular, the anomaly linked to the Bohemian orogenic complex, in the Czech Republic, continues to make contributions to the magnetic field even at high altitudes from the Earth’s surface. The results obtained from this work show how the analysis of potential fields through the operators of the field and the analytic signal moduli present high reliability and stability without the requirement of source parameters and information or filtering. These methods are, therefore, leading tools for the interpretation of anomaly fields and to obtain information about location and depth of the sources. References BARANOV, V., 1957. A new method for interpretation aeromagnetic maps: pseudo-gravimetric anomalies, Geophysics, 22, pp. 359-383. CERMÁK, V. and BODRI, L., 1998. Heat flow map of Europe revised. Deutche Geophysikalische Gesellschaft e.V., 2: 58–63. CERMÁK, V., ŠAFANDA, J. and GUTERCH, A., 1989, Deep temperature distribution along three profiles crossing the Teisseyre-Tornquist tectonic zone in Poland. Tectonophysics, 164 (2–4): 151–163. DEL RÍO, P., CASAS, A., VILLALAÍN, J.J., MOCHALES, T., SOTO, R., OLIVA-URCÍA., B., 2013. Interpretation of gravimetric and magnetic anomalies in the Cameros Basin (North Spain): combination of deep and shallow sources. Studia Geophysica et Geodetica, 57, 442-459 FLETCHER, K. M. U., FAIRHEAD, J. D., SALEM, A., LEI, K, AYALA AND CABANILLAS, P. L. M, 2011. Building ahigher resolution magnetic database for Europe for resource evaluation. First Break,v29, pp. 96-1 GUTERCH, A., GRAD, M., MATERZOK, R. and OERCHUC E., 1986. Deep structure of the earth’s crest in the contact zone of the Palaeozoic and Preecambrian platforms in Poland (Tournquist-Teisseyre Zone),Tectonophysics,128, 251-279. HENKEL, H., 1994. Standard diagrams of magnetic properties and density--a tool for understanding magnetic petrology. J. Appl. Geophys., 32: 43-53. KRÓLIKOWSKI, C., 2006. Crustal-scale complexity of the contact zone between the Palaeozoic Platform and the East European Craton in the NWPoland. Geol. Quart., 50 (1): 33–42. MAJOROWICZ J. and PLEWA S., 1979. Study of heat flow in Poland with special regards to tectonophysical problems. In: Terrestrial Heat Flow in Europe (eds. V. Èermák and L. Rybach): 240–252. Springer. Berlin. MAJOROWICZ J. A., ÈERMÁK V., ŠAFANDA J., KRZYWIEC P., WRÓBLEWSKAM., GUTERCHA. and GRAD M., 2003. Heat flow models across the Trans-European Suture Zone in the area of the POLONAISE’97 seismic experiment. Phys. Chem. Earth, 28: 375–391. NABIGHIAN, M. N., 1972. The analytic signal of two-dimensional magnetic bodies with polygonal cross-section: its properties and use for automated anomaly interpretation, Geophysics, 37(3), 507–517. NOLTE, H.J. and HAHN, A., 1992. Amodel of the distribution of crustal magnetization in central Europe compatible with the field of magnetic anomalies deduced from Magsat results. Geophys. Jour. Int., l 11 : 483-496. PHAM, V. N., D. BOYER, and J.L. LE MOUEL, 2000. Nouveaux arguments sur L’origine de L’anomalie Magnetique du bassin Parisien (AMBP) d’aprés les propriétés électriques de la croûte, C.R. Acad. Sci., 331, 443 – 449. PLEWA, S., 1998. Map of heat flow in Poland. In: Tectonic Atlas of Poland (ed. J. Znosko). Pañstw. Inst. Geol. Warszawa. PUCHER, R., 1994. Pyrrohotite-induced aeromagnetic anomalies in western Germany. J. Appl. Geophys., 32: 32- 42. PUCHER, R., WONIK, T., 1998. A new interpretation of the Magsat anomalies of central Europe. Phys. Chem. Earth. 23, 981–985. RAVAT, D.N., 1989. Magsat Investigations over the Greater African Region. Ph.D. Thesis. Purdue Univ., West Lafayette, IN, 234 pp. RAVAT, D.N., HINZE, W.J., TAYLOR, P.T., 1993. European tectonic features obselwed by Magsat. Tectonophysics, 220: 157-173.ROEST, W. R., J. VERHOEF, and M. PILKINGTON, 1992. Magnetic interpretation using the 3-D analytic signal, Geophysics, 57(1), 116–125. TAYLOR, P.T. & RAVAT, D., 1995. An interpretation of the MAGSAT Anomalies of Central Europe, J. Appl. Geophys., 4, 83-91. THÉBAULT, E., 2006. Global lithospheric magnetic field modeling by successive regional analysis. Earth Planets Space 58, 485–495. VON FRESE, R.R.B., HINZE, W.J., BRAILE, L.W. and Luca, A.J., 1981. Spherical-earth gravity and magnetic anomaly modeling by Gauss-Legendre quadrature integration. J. Geophys., 49: 234-242. 172 GNGTS 2014 S essione 3.2