Results 21 to 30 of about 40,340 (249)
Revised time-of-flight calculations for high-latitude geomagnetic pulsations using a realistic magnetospheric magnetic field model [PDF]
, 2005 We present a simple time-of-flight analysis of Alfvén pulsations standing on closed terrestrial magnetic field lines. The technique employed in this study in order to calculate the characteristic period of such oscillations builds upon earlier time-of ...
Waters, C. L. +2 more
core +1 more source
Modeling of regional magnetic field applying spherical functions: practical aspect
Геофизический журнал, 2019 Modeling of geomagnetic field and creation of geomagnetic maps is one of the main directions of geomagnetic studies. For constructing global model the global spherical Lejeandre functions are used in most cases, though for constructing regional magnetic ...
Yu. P. Sumaruk +2 more
doaj +1 more source
Regional Geomagnetic Field Model for Croatia at 2009.5 [PDF]
Acta Geophysica, 2016 Geomagnetic data of north, east and vertical components at Croatian repeat stations and ground survey sites, as well as European geomagnetic observatories and repeat stations, were used to obtain a regional geomagnetic model over Croatia at 2009.5 epoch.
Vujić, Eugen +2 more
openaire +2 more sources
B-Lspace and geomagnetic field models [PDF]
Journal of Geophysical Research, 1968 Geomagnetic field models compared in magnetic field strength-earth distance coordinates /B-L space/, noting geomagnetically trapped radiation flux ...
Lindstrom, Peter J., Heckman, Harry H.
openaire +2 more sources
Report on the magnetic survey in Slovakia for the 2014.5 epoch
Contributions to Geophysics and Geodesy, 2016 The models of the distribution of the elements of the geomagnetic field must be updated regularly. For this purpose geomagnetic measurements have to be carried out repeatedly at geomagnetic observatories as well as at temporary observation points.
Fridrich VALACH +3 more
doaj +1 more source
Error model of geomagnetic-field measurement and extended Kalman-filter based compensation method. [PDF]
PLoS ONE, 2017 The real-time accurate measurement of the geomagnetic-field is the foundation to achieving high-precision geomagnetic navigation. The existing geomagnetic-field measurement models are essentially simplified models that cannot accurately describe the ...
Zhilei Ge +4 more
doaj +1 more source
Co-estimation of geomagnetic field and in-orbit fluxgate magnetometer calibration parameters
Earth, Planets and Space, 2020 For the past 20 years, state of the art geomagnetic core field models have relied heavily on magnetic measurements made from space-based instrumentation.
Patrick Alken +2 more
doaj +1 more source
Frontiers in Earth Science, 2022 As a parameter that quantitatively measures the shielding effect of the Earth’s magnetic field on energetic particles, the geomagnetic cutoff rigidities will change significantly with the long-term change of geomagnetic field.
Wei Chu +6 more
doaj +1 more source
A global climatological model of extreme geomagnetic field fluctuations [PDF]
Journal of Space Weather and Space Climate, 2020 This paper presents a multi-parameter global statistical model of extreme horizontal geomagnetic field fluctuations (dBH/dt), which are a useful input to models assessing the risk of geomagnetically induced currents in ground infrastructure. Generalised Pareto (GP) distributions were fitted to 1-min measurements of |dBH/dt| from 125 magnetometers (with
Neil C. Rogers +4 more
openaire +4 more sources
Earth, Planets and Space, 2021 We describe the way a global model of the geomagnetic field has been built using vector field data acquired by the absolute scalar magnetometers (ASM) running in vector mode on board the Alpha and Bravo satellites of the European Space Agency (ESA) Swarm
Pierre Vigneron +3 more
doaj +1 more source