Results 11 to 20 of about 31,401 (196)
Statistical evaluation of global geomagnetic field models over Southern Africa during 2015
Earth, 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
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The combined processing of geomagnetic intensity vector projections and absolute magnitude measurements [PDF]
Geoscientific 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
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Can core-surface flow models be used to improve the forecast of the Earth's main magnetic field? [PDF]
, 2008 [1] Geomagnetic main field models used for navigation are updated every 5 years and contain a forecast of the geomagnetic secular variation for the upcoming epoch. Forecasting secular variation is a difficult task.
Alexandrescu +46 more
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Can Core Flows inferred from Geomagnetic Field Models explain the Earth's Dynamo? [PDF]
, 2015 We test the ability of large scale velocity fields inferred from geomagnetic secular variation data to produce the global magnetic field of the Earth.Our kinematic dynamo calculations use quasi-geostrophic (QG) flows inverted from geomagnetic field ...
Pais, Maria Alexandra +2 more
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Research on WMM-00 geomagnetic field model accuracy in Lithuanian territory
Geodesy 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
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Analytic Calculation of Geoelectric Fields Due to Geomagnetic Disturbances: A Test Case
IEEE 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
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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
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Movement 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
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The CHAOS-4 geomagnetic field model [PDF]
Geophysical Journal International, 2014 We present CHAOS-4, a new version in the CHAOS model series, which aims to describe the Earth's magnetic field with high spatial and temporal resolution. Terms up to spherical degree of at least n = 85 for the lithospheric field, and up to n = 16 for the time-varying core field are robustly determined.More than 14 yr of data from the satellites Ørsted,
Olsen, N. +6 more
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Geomagnetic Core Field Secular Variation Models
Space Science Reviews, 2009 We analyse models describing time changes of the Earth’s core magnetic field (secular variation) covering the historical period (several centuries) and the more recent satellite era (previous decade), and we illustrate how both the information contained in the data and the a priori information (regularisation) affect the result of the ill-posed ...
Gillet, N., Lesur, V., Olsen, N.
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