Results 21 to 30 of about 5,130 (219)

The development of a regional geomagnetic daily variation model using neural networks [PDF]

open access: yesAnnales Geophysicae, 2000
Global and regional geomagnetic field models give the components of the geomagnetic field as functions of position and epoch; most utilise a polynomial or Fourier series to map the input variables to the geomagnetic field values.
P. R. Sutcliffe
doaj   +1 more source

Statistical evaluation of global geomagnetic field models over Southern Africa during 2015

open access: yesEarth, Planets and Space, 2017
Global geomagnetic field models using spherical harmonic basis functions are important in space physics research, space weather and applications like navigation and mineral resources exploration.
P. B. Kotzé
doaj   +1 more source

The combined processing of geomagnetic intensity vector projections and absolute magnitude measurements [PDF]

open access: yesGeoscientific Instrumentation, Methods and Data Systems, 2019
A method for the combined processing measurements of the projections and the absolute magnitudes of geomagnetic field intensity vectors, based on mathematical technology of local approximation models, is proposed.
V. G. Getmanov   +4 more
doaj   +1 more source

Research on WMM-00 geomagnetic field model accuracy in Lithuanian territory

open access: yesGeodesy and Cartography, 2012
The development of surveying technology gives the possibility for a detailed exploration of physical processes on the Earth’s surface. The satellite geomagnetic surveys, the precise geomagnetic surveys in magnetic observatories, the measurement at repeat
Romuald Obuchovski
doaj   +1 more source

Sudden commencement event of 17 April 2002: Aspects of the geomagnetic response at low latitudes [PDF]

open access: yes, 2005
An analysis of a sudden commencement (SC) manifestation reveals a significant contribution of the polar current system which influences the long-term behavior of the H component at low-latitude ground stations located in the subsolar sector. A transition
Zhang, T.L.   +11 more
core   +1 more source

Analytic Calculation of Geoelectric Fields Due to Geomagnetic Disturbances: A Test Case

open access: yesIEEE Access, 2019
Geomagnetic field variations produce geoelectric fields that can affect the operation of technological networks at the Earth's surface, including power systems, pipelines, phone cables and railway circuits.
David H. Boteler   +2 more
doaj   +1 more source

Co-estimation of geomagnetic field and in-orbit fluxgate magnetometer calibration parameters

open access: yesEarth, 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

Comparison of eight years magnetic field data from Cluster with Tsyganenko models in the inner magnetosphere [PDF]

open access: yes, 2010
Eight years of magnetic field data, taken while the four Cluster spacecraft pass through, or adjacent to, the equatorial ring current, have been surveyed to investigate the effects on the Earth's magnetic field of the externally driven current systems
Holme R   +11 more
core   +1 more source

Simulation experiment to test strategies of geomagnetic navigation during long-distance bird migration

open access: yesMovement Ecology, 2021
Background Different theories suggest birds may use compass or map navigational systems associated with Earth’s magnetic intensity or inclination, especially during migratory flights.
Beate Zein   +6 more
doaj   +1 more source

Co-estimating geomagnetic field and calibration parameters: modeling Earth’s magnetic field with platform magnetometer data

open access: yesEarth, Planets and Space, 2021
Models of the geomagnetic field rely on magnetic data of high spatial and temporal resolution to give an accurate picture of the Earth’s internal magnetic field and its time-dependence.
Clemens Kloss   +2 more
doaj   +1 more source

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