Electrical conductivity at mid-mantle depths estimated from the data of Sq and long period geomagnetic variations

0363879 - GFÚ 2012 RIV CZ eng J - Journal Article
Praus, Oldřich - Pěčová, Jana - Červ, Václav - Kováčiková, Světlana - Pek, Josef - Velímský, J.
Electrical conductivity at mid-mantle depths estimated from the data of Sq and long period geomagnetic variations.
Studia geophysica et geodaetica. Roč. 55, č. 2 (2011), s. 241-264. ISSN 0039-3169. E-ISSN 1573-1626
R&D Projects: GA ČR(CZ) GA205/06/0557; GA ČR GAP210/10/2227; GA AV ČR IAA300120703
Institutional research plan: CEZ:AV0Z30120515
Keywords : geomagnetic depth sounding * Monte Carlo analysis * adaptive Metropolis sampling * solar/geomagnetic activity
Subject RIV: DE - Earth Magnetism, Geodesy, Geography
Impact factor: 0.700, year: 2011

We present results of a classical global induction analysis of the geomagnetic variation data in the range of daily Sq variations, as well as for long period variations within the period range of about 8 to 400 days. The Sq data from 88 to 94 world observatories are processed in two ways, first by constructing and analyzing average monthly daily variations for the whole months of the International Quiet Sun Year (IQSY) 1995, and second by analyzing the individual, especially quiet Q* daily records from the same year. The electrical images of the Sq response functions obtained via the Schmucker's rho* - z* procedure show a good fit with results of other induction studies, though especially our global impedance phases show a larger scatter than two other published data sets used for comparison.
Permanent Link: http://hdl.handle.net/11104/0199507