Croatian Geomagnetic Normal Reference Field of 2004.5

Abstract

Predstavljeni su rezultati prve izmjere deklinacije, inklinacije i totalnog intenziteta, izvedene u ljeto 2004. godine na Hrvatskoj geomagnetskoj sekularnoj mreži. Opisani su mjerni postupci, korišteni instrumentarij te redukcija mjerenja na epohu 2004,5. Hrvatsko geomagnetsko normalno referentno polje za 2004,5 definirano je koeficijentima polinoma drugog reda po latitudi i longitudi. Model normalnog polja pokazao je znatne razlike u odnosu na globalni model DGRF. S pomoću Mokrovićevih podataka iz 1928. godine procijenjena je sekularna varijacija na teritoriju Hrvatske.The results of the first declination, inclination and total intensity survey of the Croatian Geomagnetic Repeat Stations Network that took place in the summer of 2004 are presented. The applied measurement procedures, the instruments used, as well as the reduction of measurements to the epoch of 2004.5 are described. The Croatian Normal Reference Field of the 2004.5 is represented by means of the coefficients of the second order polynomial in latitude and longitude. Normal field model showed a significant differences in respect to global DGRF. The secular variation of the Croatian territory was estimated with the help of Mokrović’s 1928. data

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