Results 71 to 80 of about 24,514,648 (166)

Revised time-of-flight calculations for high-latitude geomagnetic pulsations using a realistic magnetospheric magnetic field model [PDF]

, 2005
We present a simple time-of-flight analysis of Alfvén pulsations standing on closed terrestrial magnetic field lines. The technique employed in this study in order to calculate the characteristic period of such oscillations builds upon earlier time-of ...
Waters, C. L., Yeoman, T. K., Wild, James A.   +2 more
core   +3 more sources

Special issue “International Geomagnetic Reference Field: the thirteenth generation”

Earth, Planets and Space, 2022
P. Alken, E. Thébault, C. D. Beggan, M. Nosé   +3 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

An Optimized Two-Step Magnetic Correction Strategy by Means of a Lagrange Multiplier Estimator with an Ellipsoid Constraint

Sensors, 2018
The geomagnetic field is as fundamental a constituent of passive navigation as Earth’s gravity. In cases where no other external attitude reference is available, for the direct heading angle estimation by a typical magnetic compass, a two-step ...
Linlin Xia, Jingtong Geng, Hanrui Yang, Yunqi Wang, Zhaolong Fu, Bo Meng   +5 more
doaj   +1 more source

Tectonic Evolution of the Mariana Trough

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 10, October 2026.
Abstract The Mariana Trough is an active back‐arc basin formed by subduction of the Pacific Plate beneath the Philippine Sea Plate and provides an ideal setting for investigating the evolution of back‐arc basins. In this study, we compile bathymetric, magnetic, and gravity data to reconstruct the formation history of the entire basin.
Seitaro Ono, Kyoko Okino, Nobukazu Seama, Toshitsugu Yamazaki, Hisanori Iwamoto   +4 more
wiley   +1 more source

International Geomagnetic Reference Field: the 12th generation [PDF]

The 12th generation of the International Geomagnetic Reference Field (IGRF) was adopted in December 2014 by the Working Group V-MOD appointed by the International Association of Geomagnetism and Aeronomy (IAGA).
Canet E, Brocco L, Lowes FJ, Sirol O, Tangborn A, Toffner-Clausen L, Sabaka TJ, Alken P, Thomson A, Bondar T, Petrov V, Gillet N, Fournier A, Korte M, Lalanne X, Civet F, Barrois O, Thebault E, Leger JM, Ridley V, Finlay CC, Saturnino D, Kuang W, Rother M, Chambodut A, Aubert J, Hulot G, Macmillan S, Schachtschneider R, Zvereva T, Bertrand F, Hamoudi M, Vigneron P, Mandea M, Manoj C, Du A, Coisson P, Lesur V, Fratter I, Olsen N, Maus S, Beggan CD, Hamilton B, Chulliat A, Wardinski I, Langlais B, Boness A, Jager T   +47 more
core   +4 more sources

Modern Ionospheric Ray Tracer for Earth Observation Satellite Missions

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Electromagnetic waves propagation through the ionosphere is subject to several effects including refraction, absorption, signal delay, or Faraday rotation.
Carlos Molina, Elena Fernandez-Nion, Adriano Camps   +2 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
core   +1 more source

Transition of Glacial Regimes Recorded at IODP Site U1524 in the Ross Sea, Antarctica, Over the Last 800 Thousand Years

Paleoceanography and Paleoclimatology, Volume 41, Issue 10, October 2026.
Abstract Reconstructing past interactions between the West Antarctic Ice Sheet (WAIS) and changing environmental conditions in the Ross Sea region can help determine long‐term WAIS stability. Existing sedimentary records reveal changes to oceanography, sea ice and ice sheet extent over the glacial‐interglacial cycles of the last ∼800 kyr.
J. W. Marschalek, T. van de Flierdt, M. O. Patterson, G. Grant, S. Kim, W. Xiao, Q. Li, G. Cortese, S. Bombard, R. M. Leckie, H. Ishii, T. van Peer, C. Xuan, S. Sugisaki, J. Müller, D. Kaufman, D. K. Kulhanek, K. J. Licht, S. R. Hemming, O. Seki, E. Colizza, F. Torricella, J. Gales, B. W. Romans, N. Varela, L. De Santis, R. M. McKay   +26 more
wiley   +1 more source

Variation of Global Ionospheric Scintillation and Its Effect on GPS Kinematic PPP‐AR Performance During Geomagnetic Storms in Solar Cycle 25: A Statistical Analysis

Space Weather, Volume 24, Issue 10, October 2026.
Abstract Enhanced small‐scale ionospheric irregularities during geomagnetic storms can disturb Global Navigation Satellite System (GNSS) carrier‐phase tracking and are associated with reduced stability of ambiguity‐fixed precise point positioning (PPP‐AR), but their impact on kinematic positioning remains insufficiently quantified.
Dongsheng Zhao, Qichen Zhao, Shuanglei Cui, Kefei Zhang, Longjiang Li, Wang Li, Zhongchao Shi, Craig M. Hancock   +7 more
wiley   +1 more source