How do core surface flow models vary when inverted from IGRF-14 candidate field models? [PDF]
Earth, Planets and SpaceThe International Geomagnetic Reference Field (IGRF) model is a series of models that describe the large scale magnetic field measured at the Earth’s surface. It is used by a wide range of scientists and industries, including in navigation, space weather
Hannah F Rogers, Mioara Mandea
exaly +4 more sources
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
Ciaran Beggan +2 more
exaly +3 more sources
Forecasting secular variation using physics-informed neural networks for IGRF-14 [PDF]
Earth, Planets and SpaceIn response to the call for candidate models for the 14th generation of the International Geomagnetic Reference Field (IGRF) by the Geomagnetic Field Modeling Working Group (V-MOD) of the International Association of Geomagnetism and Aeronomy (IAGA), we ...
N. Shakespeare-Rees +6 more
doaj +2 more sources
A secular variation candidate for IGRF-14 based on core-flow inversion via an ensemble Kalman smoother [PDF]
Earth, Planets and SpaceWe present a candidate mean secular variation (SV) model for the 2025.0 $$-$$ - 2030.0 period. The forecasted SV is produced with a data assimilation (DA) system built around a simple frozen-flux model of the core flow and magnetic field near the core ...
Kyle Gwirtz +2 more
doaj +2 more sources
GCRAS candidate field models for IGRF-14
Earth, Planets and SpaceWe present candidate models for the 14th generation of the International Geomagnetic Reference Field (IGRF-14), specifically the Definitive Geomagnetic Reference Field (DGRF) for epoch 2020.0 and the IGRF for epoch 2025.0.
Roman I Krasnoperov +2 more
exaly +2 more sources
Candidate geomagnetic field models for IGRF-14 and secular acceleration since 2020
Earth, Planets and SpaceIGRF-14 is the fourteenth generation of the International Geomagnetic Reference Field (IGRF), a spherical harmonic model of Earth’s main magnetic field and its secular variation, developed through international collaboration under the auspices of the ...
Arnaud Chulliat, Manoj Nair
exaly +2 more sources
Climatology of TEC Longitudinal Difference in Middle Latitudes of East Asia
Remote Sensing, 2022 In this paper, a statistical analysis of the diurnal, seasonal and solar cycle variation in the TEC longitudinal difference in midlatitudes of East Asia is presented using CODE GIMs data in 2015–2019. Moreover, the empirical neutral wind model HWM-14 and
Xingxin Sun +11 more
doaj +1 more source
Investigation of the westward drift of the earth’s main geomagnetic field based on the spatial distribution of secular variation derived from IGRF-14 [PDF]
E3S Web of ConferencesWestward drift of the Earth's magnetic field is an important manifestation of geomagnetic secular variation and provides information on fluid dynamics within the outer core.
Shakhriev Bekuz, Shukurov Zukhriddin
doaj +1 more source
Statistical Assessment of Magnetic Precursors to the April 1, 2014 Chile 8.2 Earthquake Using Swarm Satellite Data [PDF]
مجله فیزیک زمین و فضاSatellite-based monitoring of geomagnetic field variations offers a promising avenue for identifying earthquake precursors. The use of satellite data to detect such anomalies has garnered significant attention, given its global coverage and independence ...
Shahrokh Pourbeyranvand +1 more
doaj +1 more source
Geomagnetic field modelling and USTHB IGRF-14 candidates
Earth, Planets and SpaceThe present paper describes the construction of a global spherical harmonic model of the geomagnetic field, developed as the USTHB (University of Science and Technology Houari Boumediene) candidate for the 14th generation of International Geomagnetic ...
Abdenaceur Lemgharbi +5 more
doaj +1 more source