Naslov
The representative recent secular variation of the geomagnetic field on the Croatian territory

Autori
Brkić, Mario ; Šugar, Danijel ; Pavasović, Marko

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
International Conference on Magnetism, Geomagnetism and Biomagnetis MGB – 2008 Abstracts booklet / - , 2008

Skup
International Conference on Magnetism, Geomagnetism and Biomagnetis

Mjesto i datum
Sežana, Slovenija, 07.11.2008. - 08.11.2008

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
geomagnetic repeat station; geomagnetic data reduction; geomagnetic field secular variation

Sažetak
The four consecutive geomagnetic surveys performed from 2004 to 2007 at Pokupsko (POKU) repeat station, which is located in the central part of Croatia, were depicted. The resulting geomagnetic field secular variation, and its time change, was chosen as being representative for the whole Croatian territory. In doing so, two models of data reduction using Tihany (THY), as the closest reference geomagnetic observatory were considered. First data reduction model assumed simply that the secular variation at the repeat station and observatory were the same all the time throughout the year for which the secular mean was calculated. Second data reduction model took into the consideration the difference in secular variation at both repeat station and observatory for the concerned year. In addition, the reduction to a quiet level, according to procedure used at Edinburgh, and in reference to Tihany and L’ Aquila observatories, was performed. All three reductions methods were compared. Obtained geomagnetic field values, as well as its secular variation were compared to those computed from the global geomagnetic models. In addition, Mokrovićs’ historical data were used in order to determine the geomagnetic field variation. Herewith, the first geomagnetic field secular variation obtained from terrestrial surveys of the Republic of Croatia is presented.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Geodezija

POVEZANOST RADA