Results 21 to 30 of about 31,676 (285)

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

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

A Model of the Geomagnetic Field at Epoch 1975 [PDF]

open access: yesGeophysical Journal International, 1975
Summary The main magnetic field at epoch 1975 is defined by 168 spherical harmonic coefficients (those representing the internal part to degree and order 12). A further 80 coefficients (degree and order 8) define the secular variation and, in addition, 26 secular acceleration coefficients (those most significantly determined) are included.
D. R. Barraclough   +3 more
openaire   +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

Multi-Variate LSTM Prediction of Alaska Magnetometer Chain Utilizing a Coupled Model Approach

open access: yesFrontiers in Astronomy and Space Sciences, 2022
During periods of rapidly changing geomagnetic conditions electric fields form within the Earth’s surface and induce currents known as geomagnetically induced currents (GICs), which interact with unprotected electrical systems our society relies on.
Matthew Blandin   +8 more
doaj   +1 more source

Forecasting changes of the magnetic field in the United Kingdom from L1 Lagrange solar wind measurements

open access: yesFrontiers in Physics, 2022
Extreme space weather events can have large impacts on ground-based infrastructure important to technology-based societies. Machine learning techniques based on interplanetary observations have proven successful as a tool for forecasting global ...
Frederik Dahl Madsen   +2 more
doaj   +1 more source

Modeling of regional magnetic field applying spherical functions: theoretical aspect

open access: yesГеофизический журнал, 2019
Observation of geomagnetic field, measurement of its components values and establishment on their base models of geomagnetic field as well as geomagnetic mapping are the main trend of geomagnetic studies.
Yu. P. Sumaruk   +2 more
doaj   +1 more source

Centennial to millennial geomagnetic field variations

open access: yesJournal of Space Weather and Space Climate, 2012
Reconstructions of the geomagnetic field in the past represent a useful tool not only to investigate the geodynamo process, but also to estimate the effect of geomagnetic shielding for any studies on cosmogenic radionuclides and galactic cosmic rays.
Korte Monika, Muscheler Raimund
doaj   +1 more source

Geomagnetic main field modeling with DMSP [PDF]

open access: yesJournal of Geophysical Research: Space Physics, 2014
AbstractThe Defense Meteorological Satellite Program (DMSP) launches and maintains a network of satellites to monitor the meteorological, oceanographic, and solar‐terrestrial physics environments. In the past decade, geomagnetic field modelers have focused much attention on magnetic measurements from missions such as CHAMP, Ørsted, and SAC‐C.
Alken, P.   +6 more
openaire   +3 more sources

Static magnetic field models consistent with nearly isotropic plasma pressure [PDF]

open access: yes, 1987
Using the empirical magnetospheric magnetic field models of Tsyganenko and Usmanov (TU), we have determined the self-consistent plasma pressure gradients and anisotropies along the midnight meridian in the near-Earth magnetosphere.
Kivelson, Margaret G.   +2 more
core   +3 more sources

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