Results 21 to 30 of about 2,895 (251)

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

Matematička analiza magnetskog polja zemlje / Mathematical analysis of geomagnetic field

open access: yesVojnotehnički Glasnik, 2006
Poznavanje matematičkih transformacija kojima se može predstaviti intenzitet vektora magnetskog polja Zemlje ima veoma veliki značaj. Definisanjem koeficijenata transformacionih funkcija omogućava se predstavljanje raspodele vrednosti polja na određenom ...
Goran Prodanović
doaj   +1 more source

MagNet—A Data‐Science Competition to Predict Disturbance Storm‐Time Index (Dst) From Solar Wind Data

open access: yesSpace Weather, 2023
Enhanced interaction between solar‐wind and Earth's magnetosphere can cause space weather and geomagnetic storms that have the potential to damage critical technologies, such as magnetic navigation, radio communications, and power grids.
Manoj Nair   +7 more
doaj   +1 more source

Evaluating the Accuracy of Magnetospheric Magnetic Field Models Using Cluster Spacecraft Magnetic Field Measurements

open access: yesUniverse, 2021
Magnetic fields in the inner magnetosphere can be obtained as vector sums of the Earth’s own internal magnetic field and magnetic fields stemming from currents flowing in the space plasma. While the Earth’s internal magnetic field is accurately described
František Němec, Marie Kotková
doaj   +1 more source

Modelling the geomagnetic field.

open access: yesJournal of geomagnetism and geoelectricity, 1990
Spherical harmonic models of the main geomagnetic field and its secular variation are used by navigators, exploration geophysicists, drillers of oil wells and by scientists studying the Earth's interior, its ionosphere and magnetosphere. The data on which such models are based must be of the highest quality and must be distributed as homogeneously as ...
openaire   +2 more sources

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