Results 31 to 40 of about 525 (164)

An Improved Aeromagnetic Compensation Method Robust to Geomagnetic Gradient

Applied Sciences, 2022
Aeromagnetic surveys play an important role in many fields, for example, archaeology, anti-submarine warfare, and geophysical exploration. Being in the geomagnetic field, the aircraft generates a great deal of magnetic interference, resulting in bad ...
Yongqiang Feng, Qimao Zhang, Yaoxin Zheng, Xiaodong Qu, Fang Wu, Guangyou Fang   +5 more
doaj   +1 more source

Study on Long-Term Variation Characteristics of Geomagnetic Cutoff Rigidities of Energetic Protons Caused by Long-Term Variation of Geomagnetic Field

Frontiers in Earth Science, 2022
As a parameter that quantitatively measures the shielding effect of the Earth’s magnetic field on energetic particles, the geomagnetic cutoff rigidities will change significantly with the long-term change of geomagnetic field.
Wei Chu, Yanyan Yang, Song Xu, Gang Qin , Jianping Huang, Zhima Zeren, Xuhui Shen   +6 more
doaj   +1 more source

International Geomagnetic Reference Field: the eleventh generation [PDF]

, 2010
The eleventh generation of the International Geomagnetic Reference Field (IGRF)was adopted in December 2009 by the International Association of Geomagnetism and Aeronomy Working Group V-MOD.
Mandea, M., Chambodut, A., Thomson, A. W. P., Z. Wei, Rother, M., Maus, S., Tøffner-Clausen, L., Bondar, T. N., Finlay, C.C., Beggan, C.D., M. Menvielle, Chernova, T.A., Chulliat, A., Menvielle, Michel, McLean, S., Toffner-Clausen, L., B. Hamilton, Finlay, C. C., Zvereva, T. I., Hulot, G., T. N. Bondar, Olsen, Nils, Kuang, W., Wardinksi, I., S. Maus, H. Lühr, N. Olsen, Finlay, Christopher Charles, Luehr, H., A. W. P. Thomson, L. Tøffner-Clausen, Menvielle, M., Thomson, A.W.P., S. McLean, T. A. Chernova, Chuillat, A., Holme, R., Macmillan, S., Hamilton, B., Wei, Z., W. Kuang, null null, Golovkov, V.P., Lesur, V., Wardinski, I., Langlais, Benoit, R. Holme, V. P. Golovkov, B. Langlais, Langlais, B., M. Hamoudi, T. J. Sabaka, M. Mandea, Lowes, F. J., Manoj C., Golovkov, V. P., Sabaka, T.J., Finlay, Chris, J. Rauberg, C. Manoj, Bondar, T.N., Olsen, N., Tøffner-Clausen, Lars, Lühr, H., S. Macmillan, E. Thébault, Zvereva, T.I., C. D. Beggan, C. C. Finlay, Michaelis, I., F. J. Lowes, T. I. Zvereva, A. Chambodut, Lowes, F.J., Sabaka, T. J., Tangborn, A., Beggan, C. D., A. Chulliat, Thébault, E., M. Rother, I. Michaelis, Hamoudi, M., Chernova, T. A., G. Hulot, V. Lesur, Rauberg, J., Manoj, C., A. Tangborn, I. Wardinski   +88 more
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The Phase Space Density Evolution of Radiation Belt Electrons under the Action of Solar Wind Dynamic Pressure

Magnetochemistry, 2023
Earth’s radiation belt and ring current are donut-shaped regions of energetic and relativistic particles, trapped by the geomagnetic field. The strengthened solar wind dynamic pressure (Pdyn) can alter the structure of the geomagnetic field, which can ...
Peng Hu, Haimeng Li, Zhihai Ouyang, Rongxin Tang, Liangjin Song, An Yuan, Bopu Feng, Yangyang Wang, Wenqian Zou   +8 more
doaj   +1 more source

Cosmic ray cutoff prediction using magnetic field from global magnetosphere MHD simulations [PDF]

Annales Geophysicae, 2005
Relativistic particles entering the Earth's magnetosphere, i.e. cosmic rays and solar energetic particles, are of prime space weather interest because they can affect satellite operations, communications, and the safety of astronauts and airline ...
J. M. Weygand, J. Raeder
doaj   +1 more source

A candidate secular variation model for IGRF-13 based on MHD dynamo simulation and 4DEnVar data assimilation

Earth, Planets and Space, 2020
We have submitted a secular variation (SV) candidate model for the thirteenth generation of International Geomagnetic Reference Field model (IGRF-13) using a data assimilation scheme and a magnetohydrodynamic (MHD) dynamo simulation code.
Takuto Minami, Shin’ya Nakano, Vincent Lesur, Futoshi Takahashi, Masaki Matsushima, Hisayoshi Shimizu, Ryosuke Nakashima, Hinami Taniguchi, Hiroaki Toh   +8 more
doaj   +1 more source

The Mag.num core field model as a parent for IGRF-13, and the recent evolution of the South Atlantic Anomaly

Earth, Planets and Space, 2021
We present the GFZ candidate field models for the $$13{\mathrm{th}}$$ 13 th  Generation International Geomagnetic Reference Field (IGRF-13). These candidates were derived from the Mag.num.IGRF13 geomagnetic core field model, which is constrained by Swarm
M. Rother, M. Korte, A. Morschhauser, F. Vervelidou, J. Matzka, C. Stolle   +5 more
doaj   +1 more source

Evaluation of candidate geomagnetic field models for IGRF-11 [PDF]

, 2010
The eleventh generation of the International Geomagnetic Reference Field (IGRF) was agreed in December 2009 by a task force appointed by the International Association of Geomagnetism and Aeronomy (IAGA) Division VWorking Group V-MOD.
C. C. Finlay, M. Hamoudi, F. J. Lowes, Maus, S., Lowes, F. J., Finlay, C.C., Beggan, C.D., Lowes, F.J., Beggan, C. D., Thébault, E., Hamoudi, M., Finlay, Chris, Finlay, C. C., Olsen, N., Olsen, Nils, E. Thébault, S. Maus, N. Olsen, C. D. Beggan   +18 more
core   +1 more source

Model 2D of Subsurface Structures in the Dempo Magnetic Area of Pagar Alam City Using Geomagnetic Method

Jurnal Kumparan Fisika, 2023
ABSTRAK   Metode geomagnetik digunakan dalam penelitian ini untuk membuat model 2D struktur bawah permukaan di kawasan Dempo Magnet kota Pagar Alam berdasarkan sebaran anomali. Terdapat 48 titik pengukuran pada lokasi penelitian.
Febri Adrianto Adrianto, Refrizon, Arif Ismul Hadi   +2 more
doaj   +1 more source

Evaluación preliminar del campo geomagnético de referencia internacional IGRF-1990 para México y anomalías magnéticas corticales

Geofísica Internacional, 1994
Se reporta una comparación regional entre el International Geomagnetic Reference Field (IGRF) para 1990 y medidas geomagneticas de campo obtenidas en 51 localidades del pais.
E. Hernández-Quintero, H. Nolasco-Chavez, J. O. Campos-Enríquez, C. Cañón-Amaro, A. Orozco Torres, J. Urrutia-Fucugauchi, G. Álvarez-García   +6 more
doaj   +1 more source