Nalazite se na CroRIS probnoj okolini. Ovdje evidentirani podaci neće biti pohranjeni u Informacijskom sustavu znanosti RH. Ako je ovo greška, CroRIS produkcijskoj okolini moguće je pristupi putem poveznice www.croris.hr
izvor podataka: crosbi

Estimation of influence of unequal secular variation on geomagnetic data reduction (CROSBI ID 220543)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Vujić, Eugen ; Brkić, Mario Estimation of influence of unequal secular variation on geomagnetic data reduction // Studia geophysica et geodaetica, 60 (2016), 1; 162-176. doi: 10.1007/s11200-015-0823-z

Podaci o odgovornosti

Vujić, Eugen ; Brkić, Mario

engleski

Estimation of influence of unequal secular variation on geomagnetic data reduction

The geomagnetic field components are periodically measured at repeat stations. The main objective of the repeat stations is to give data for tracing of secular variation of the geomagnetic field components. Secular variation is generally different at the repeat station and at geomagnetic observatory used in the data reduction. The influence of the secular variation differences on geomagnetic data reduction was estimated for the regions of Europe, North America (below 60 °N) and Australia, respectively, during interval 2000- 2010. These estimations were obtained by using the monthly mean values of north, east and vertical components of geomagnetic field, recorded at geomagnetic observatories. The influences were calculated by using observatories pairs, with distances from 350 km (in Europe) to 3100 km (in North America and Australia). The maximal influences were found to be the smallest in east component in Europe and North America, and vertical component in Australia ; the influences increase with time from a central reduction epoch and they were not constant during mentioned eleven years ; they were less than 1 nT only in Europe, for distances between the observatories up to 1000 km in all three components and for times spanning ±1 month from a central epoch. It was found that their year to year variability is mostly due to the non-eliminated external field residuals in the observatories monthly means ; their influence was up to 3 nT for ±3 months from a central epoch. Further, the real influences were compared to those modeled by IGRF-12 Model. The maximal differences between the real and the modeled values were below 4.5 nT in all three components, for ±3 months from a central epoch.

geomagnetic observatory; monthly means; annual means

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

Podaci o izdanju

60 (1)

2016.

162-176

objavljeno

0039-3169

10.1007/s11200-015-0823-z

Povezanost rada

Fizika, Geologija, Geodezija

Poveznice
Indeksiranost