Results 31 to 40 of about 657 (236)

Modelling the geomagnetic field.

Journal 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

The CSES global geomagnetic field model (CGGM): an IGRF-type global geomagnetic field model based on data from the China Seismo-Electromagnetic Satellite

Earth, Planets and Space, 2021
Using magnetic field data from the China Seismo-Electromagnetic Satellite (CSES) mission, we derive a global geomagnetic field model, which we call the CSES Global Geomagnetic Field Model (CGGM).
Yanyan Yang, Gauthier Hulot, Pierre Vigneron, Xuhui Shen, Zeren Zhima, Bin Zhou, Werner Magnes, Nils Olsen, Lars Tøffner-Clausen, Jianpin Huang, Xuemin Zhang, Shigeng Yuan, Lanwei Wang, Bingjun Cheng, Andreas Pollinger, Roland Lammegger, Jianpin Dai, Jun Lin, Feng Guo, Jingbo Yu, Jie Wang, Yingyan Wu, Xudong Zhao, Xinghong Zhu   +23 more
doaj   +1 more source

Geomagnetic main field modeling with DMSP [PDF]

Journal 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., Maus, S., Lühr, H., Redmon, R., Rich, F., Bowman, B., O'Malley, S.   +6 more
openaire   +3 more sources

Space weather events in July 1982 and October 2003 and the effects of geomagnetically induced currents on Swedish technical systems [PDF]

Annales Geophysicae, 2009
In this paper, we analyse in detail two famous space weather events; a railway problem on 13–14 July 1982 and a power blackout on 30 October 2003. Both occurred in Sweden during very intensive space weather storms and each of them a few years after ...
M. Wik, M. Wik, R. Pirjola, H. Lundstedt, A. Viljanen, P. Wintoft, A. Pulkkinen, A. Pulkkinen   +7 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

Electric field effects on ionospheric and thermospheric parameters above the EISCAT station for summer conditions [PDF]

Annales Geophysicae, 1998
Numerical calculations of the thermospheric and ionospheric parameters above EISCAT are presented for quiet geomagnetic conditions in summer. The Global Self-consistent Model of the Thermosphere, Ionosphere and Protonosphere (GSM TIP) was used.
V. V. Klimenko, Yu. N. Korenkov, M. Förster   +2 more
doaj   +1 more source

Radiation Resilient Synthetic Antiferromagnets‐Based Neuromorphic Device for Sea Surface Temperature Reconstruction

Advanced Science, EarlyView.
By leveraging strong antiferromagnetic coupling, radiation‐tolerant synthetic antiferromagnetic synaptic devices are developed. Their intrinsic nonlinearity emulates neuronal activation, while linear and symmetric conductance modulation mimics synaptic plasticity.
Mingxu Song, Jiahao Liu, Ruisheng Hu, Teng Xu, Aihua Tang, Zhihong Zhu   +5 more
wiley   +1 more source

A Prospection‐Led Archaeological Investigation of a Picenian and Roman Necropolis in Corinaldo (Marche, Italy)

Archaeological Prospection, EarlyView.
ABSTRACT This paper presents the results of an integrated archaeological and geophysical investigation conducted between 2018 and 2024 at the newly discovered Picenian and Roman necropolis of Contrada Nevola (Corinaldo, Marche, Central Italy), identified in the framework of development‐led archaeology. The research strategy combined aerial photography,
Federica Boschi
wiley   +1 more source

The influence of regularization on the geomagnetic core field modeling

地球与行星物理论评
Earth's magnetic field is generated through the dynamo action in the liquid outer core. Using observational data from geomagnetic satellites and observatories, we can construct geomagnetic models that describe spatial and temporal variations of the core ...
Juyuan Xu, Yufeng Lin, Keke Zhang
doaj   +1 more source

The CHAOS-4 geomagnetic field model [PDF]

Geophysical Journal International, 2014
We present CHAOS-4, a new version in the CHAOS model series, which aims to describe the Earth's magnetic field with high spatial and temporal resolution. Terms up to spherical degree of at least n = 85 for the lithospheric field, and up to n = 16 for the time-varying core field are robustly determined.More than 14 yr of data from the satellites Ørsted,
Olsen, N., Lühr, H., Finlay, C., Sabaka, T., Michaelis, I., Rauberg, J., Toffner-Clausen, L.   +6 more
openaire   +3 more sources