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Investigation of the Crust of the Pannonian Basin, Hungary Using Low-Altitude CHAMP Horizontal Gradient Magnetic AnomaliesThe Pannonian Basin is a deep intra-continental basin that formed as part of the Alpine orogeny. It is some 600 by 500 km in area and centered on Hungary. This area was chosen since it has one of the thinnest continental crusts in Europe and is the region of complex tectonic structures. In order to study the nature of the crustal basement we used the long-wavelength magnetic anomalies acquired by the CHAMP satellite. The SWARM constellation, scheduled to be launched next year, will have two lower altitude satellites flying abreast, with a separation of between ca. 150 to 200 km. to record the horizontal magnetic gradient. Since the CHAMP satellite has been in orbit for eight years and has obtained an extensive range of data, both vertically and horizontally there is a large enough data base to compute the horizontal magnetic gradients over the Pannonian Basin region using these many CHAMP orbits. We recomputed a satellite magnetic anomaly map, using the spherical-cap method of Haines (1985), the technique of Alsdorf et al. (1994) and from spherical harmonic coefficients of MF6 (Maus et aI., 2008) employing the latest and lowest altitude CHAMP data. We then computed the horizontal magnetic anomaly gradients (Kis and Puszta, 2006) in order to determine how these component data will improve our interpretation and to preview what the SW ARM mission will reveal with reference to the horizontal gradient anomalies. The gradient amplitude of an 1000 km northeast-southwest profile through our horizontal component anomaly map varied from 0 to 0.025 nT/km with twin positive anomalies (0.025 and 0.023 nT/km) separated by a sharp anomaly negative at o nT/km. Horizontal gradient indicate major magnetization boundaries in the crust (Dole and Jordan, 1978 and Cordell and Grauch, 1985). Our gradient anomaly was modeled with a twodimensional body and the anomaly, of some 200 km, correlates with a 200 km area of crustal thinning in the southwestern Pannonian Basin.
Document ID
20110023400
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Taylor, Patrick T. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kis, Karoly I. (Eotvos Lorand Univ. Budapest, Hungary)
Puszta, Sandor (Seismological Observatory Wellington, New Zealand)
Wittmann, Geza (MOL Hungarian Oil and Gas Co. Budapest, Hungary)
Kim, Hyung Rae (Kongju National Univ. Republic of Korea)
Toronyi, B. (Institute of Geodesy, Cartography and Remote Sensing Budapest, Hungary)
Date Acquired
August 25, 2013
Publication Date
December 5, 2011
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
GSFC.CPR.5474.2011
Meeting Information
Meeting: American Geophysical Union 2011 Fall Meeting
Location: San Francisco, CA
Country: United States
Start Date: December 5, 2011
End Date: December 9, 2011
Distribution Limits
Public
Copyright
Public Use Permitted.

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