Results 11 to 20 of about 1,592 (224)
Geomagnetic Virtual Observatories: monitoring geomagnetic secular variation with the Swarm satellites [PDF]
Earth, Planets and Space, 2021 We present geomagnetic main field and secular variation time series, at 300 equal-area distributed locations and at 490 km altitude, derived from magnetic field measurements collected by the three Swarm satellites.
Magnus D. Hammer +4 more
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Earth, Planets and Space, 2020 Observations of the geomagnetic field taken at Earth’s surface and at satellite altitude are combined to construct continuous models of the geomagnetic field and its secular variation from 1957 to 2020.
I. Wardinski +6 more
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Gauge-and-compass migration: inherited magnetic headings and signposts can adapt to changing geomagnetic landscapes [PDF]
Movement Ecology, 2023 Background For many migratory species, inexperienced (naïve) individuals reach remote non-breeding areas independently using one or more inherited compass headings and, potentially, magnetic signposts to gauge where to switch between compass headings ...
James D. McLaren +2 more
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Geomagnetic secular variation forecast using the NASA GEMS ensemble Kalman filter: A candidate SV model for IGRF-13 [PDF]
Earth, Planets and Space, 2021 We have produced a 5-year mean secular variation (SV) of the geomagnetic field for the period 2020–2025. We use the NASA Geomagnetic Ensemble Modeling System (GEMS), which consists of the NASA Goddard geodynamo model and ensemble Kalman filter (EnKF ...
Andrew Tangborn +3 more
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Four decades of European geomagnetic secular variation and acceleration
Annals of Geophysics, 2009 <p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Times;"><span style="font-family: Verdana, Arial, Helvetica, sans-serif; font-size: x-small;"><span style="font-size: 10px;"><span style="font-family: Times, Arial, Helvetica ...
Monika Korte +2 more
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Data Science Journal, 2010 Sea Floor ElectroMagnetic Stations (SFEMSs) are now operating at two deep seafloor sites called the 'WPB' and the 'NWP' in the West Philippine Basin and the Northwest Pacific Basin, respectively.
H Toh, Y Hamano, T Goto, H Utada
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Changes in cosmic ray cut-off rigidities due to secular variations of the geomagnetic field [PDF]
Annales Geophysicae, 1997 An analytical expression is derived for the cutoff rigidity of cosmic rays arriving at a point in an arbitrary direction, when the main geomagnetic field is approximated by that of an eccentric dipole.
A. Bhattacharyya, B. Mitra
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Geomagnetic secular variation in the Antarctic region during 1960-1975
Antarctic Record, 1982 The annual mean values of the geomagnetic three components (X, Y, Z) at 20 stations located between the South Pole and the 30°S latitude circle during 15 years from 1960 to 1975 are examined to study on the geomagnetic secular variation in the southern ...
Takesi Nagata
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IGRF-14 secular variation prediction from core surface flow acceleration [PDF]
Earth, Planets and SpaceThe International Geomagnetic Reference Field (IGRF) has been regularly updated since its inception in 1965. Every recent iteration contains an estimate of the geomagnetic secular variation (SV), for the intermediate years between iterations. We submit a
Frederik Dahl Madsen +5 more
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Geomagnetic Secular Variation [PDF]
Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1966 Abstract We analyse over 175000 magnetic observations from an interval spanning 1695-1980 to produce a sequence of maps of the magnetic field at the core-mantle boundary; we find that even the earlier data enable us to determine reliable maps.
Jeremy Bloxham +2 more
+5 more sources