Results 91 to 100 of about 31,401 (196)

Forecasting the geomagnetic activity of the Dst Index using radial basis function networks [PDF]

, 2006
The Dst index is a key parameter which characterises the disturbance of the geomagnetic field in magnetic storms. Modelling of the Dst index is thus very important for the analysis of the geomagnetic field.
Balikhin, M.A., Billings, S.A., Wei, H.L., Zhu, D.Q.   +3 more
core   +1 more source

Modeling the geomagnetic field over Croatia

Geofizika, 2011
During the last years investigation of the geomagnetic field in Croatia has started and an effort to establish the geomagnetic observatory has been made. Based on the total field measured over the northern eastern part of Croatia, the suitable position for installing the geomagnetic observatory is proposed.
openaire   +1 more source

A multisource geomagnetic field model incorporating ocean circulation-induced magnetic field

Earth and Planetary Physics
The movement of global ocean circulation in the Earth’s main magnetic field generates a measurable induced magnetic field (about 2 nT at geomagnetic satellite altitudes).
HongBo Yao, JuYuan Xu, Cong Yang, ZhengYong Ren, Keke Zhang   +4 more
doaj   +1 more source

Assessment of the Weimer Geomagnetic Perturbation Model for High‐Latitude Positioning and Navigation

Space Weather
The Geomagnetism Group at the National Centers for Environmental Information (NCEI), in collaboration with the Cooperative Institute for Research in Environmental Sciences (CIRES), along with various government and industry partners, specializes in ...
S. Califf, M. Nair, D. Weimer, N. Zachman, B. Poedjono   +4 more
doaj   +1 more source

WHUEMM: global core field modelling from multiple satellites and comparative evaluation of inversion strategy

Earth, Planets and Space
Measurements from low Earth orbit satellites play an important role in modern geomagnetic field modelling. In this study, we present two geomagnetic field models, WHUEMM-S, derived by sequential inversion, and WHUEMM-C, derived by comprehensive inversion.
Bohao Qian, Chao Xiong, Fengjue Wang, Yanyan Yang, Xinyi Rang, Yuyang Huang   +5 more
doaj   +1 more source

Pymaginverse: A python package for global geomagnetic field modeling

Applied Computing and Geosciences
Data-based geomagnetic models are key for mapping the global field, predicting the movement of magnetic poles, understanding the complex processes happening in the outer core, and describing the global expression of magnetic field reversals. There exists a wide range of models, which differ in a priori assumptions and methods for the interpolation of ...
Frenk Out, Maximilian Schanner, Liz van Grinsven, Monika Korte, Lennart V. de Groot   +4 more
openaire   +3 more sources

Modeling regionally the geomagnetic field

, 2003
The geomagnetic field above the Earth's surface in current free region may be expressed as the gradient of a scalar potential solving Laplace equation. For regions with a fairly dense coverage of data at different altitudes, a regional model ought to offer a better spatial resolution of the regional field over the volume under study than a global field
openaire   +1 more source

Advancements in low Earth orbit satellite magnetic field measurements and global geomagnetic field modeling

地球与行星物理论评
Low Earth orbit (LEO) satellites have emerged as a primary tool for global geomagnetic field detection and model refinement, owing to their wide coverage, high resolution, and absence of geographical limitations.
Yanyan Yang, Jie Wang, Zhima Zeren, Xuhui Shen, Bin Zhou, Shigeng Yuan, Yuanqing Miao, Yue Xu   +7 more
doaj   +1 more source

Recurrent neural network trained with the extended Kalman filter to forecast the geomagnetic secular variation for IGRF-14

Earth, Planets and Space
This study proposes a neural network approach for predicting the geomagnetic secular variation (SV) to improve the accuracy and efficiency of short-term geomagnetic forecasts. The International Geomagnetic Reference Field (IGRF), updated every five years,
Sho Sato, Shin’ya Nakano, Vincent Lesur, Masaki Matsushima, Takuto Minami, Hiroaki Toh   +5 more
doaj   +1 more source

Study of the Gyro and Divergence Characteristics of Relativistic Charged Particle Beam Propagation in Earth’s Magnetic Field

Advances in High Energy Physics
Relativistic charged particle beam can be used as a destructive beam weapon in space for debris removal tasks. The trajectories of charged particles are affected by both electric and magnetic forces in the Earth’s magnetic field.
Meihua Fang, Zheng Liang, Yingkui Gong, Jianfei Chen, Guiping Zhu, Ting Liu, Yu Tian, Yu Zhou   +7 more
doaj   +1 more source