Results 61 to 70 of about 545 (160)

Report on the magnetic survey in Slovakia for the 2014.5 epoch

Contributions to Geophysics and Geodesy, 2016
The models of the distribution of the elements of the geomagnetic field must be updated regularly. For this purpose geomagnetic measurements have to be carried out repeatedly at geomagnetic observatories as well as at temporary observation points.
Fridrich VALACH, Magdaléna VÁCZYOVÁ, Tomáš ŠOLTIS, Melinda VAJKAI   +3 more
doaj   +1 more source

An assessment on the Mexico gravity network and its integration to IGRF

, 2022
This presentation informs about the status of the national reference gravity network in Mexico as it was on 2022 and about the results of absolute gravity surveys performed on 2018, which bring some reference stations referred to the most recent standards of the International Gravity Reference Frame.
Avalos Naranjo, David, Alvarado Cortes, Apolo, Mendoza Martinez, Marco Antonio, Pagiatakis, Spiros, Medina Parra, Francisco Javier, Robles Bravo, Jordan, Saravia Corona, Jovany, Arellano Sánchez, Javier   +7 more
openaire   +2 more sources

Magnetic Signature of the Corona Lava Tube (Lanzarote, Canary Islands), a Lunar and Martian Planetary Analog

Journal of Geophysical Research: Planets, Volume 131, Issue 7, July 2026.
Abstract Lava tubes and caves are key exploration targets on the Moon and Mars due to their potential to serve as natural infrastructure for future crewed missions. However, identifying these structures efficiently and reliably remains a major challenge.
J. Martin de Blas, Y. M. Martos, J. R. Espley, D. A. Sheppard, S. P. Scheidt, J. A. Richardson, J. E. P. Connerney   +6 more
wiley   +1 more source

Development of a Systematic Model for Study on the Phenomena of Ionospheric and Geomagnetic Variations [PDF]

Journal of Astronomy and Space Sciences, 1999
Solar activities ejecting high energy particles influence satellites and satellite communications as well as perturb geomagnetic fields. To understand space environments near the Earth being influenced by the Sun, we must study about the magnetosphere ...
Yoo Surn Pyo, Hwang-Jae Rhee, Min-Geun Kim, Eunhwa Kim, Sung-Hee Song, Jinny Lee, Dong-Hun Lee   +6 more
doaj  

Iridium Communications Satellite Constellation Data for Study of Earth's Magnetic Field

Geochemistry, Geophysics, Geosystems, 2021
Characterization of Earth's magnetic field is key to understanding dynamics of the core. We assess whether Iridium Communications magnetometer data can be used for this purpose since.
Brian J. Anderson, Regupathi Angappan, Ankit Barik, Sarah K. Vines, Sabine Stanley, Pietro N. Bernasconi, Haje Korth, Robin J. Barnes   +7 more
doaj   +1 more source

Optimizing HAARP Beam Pattern for Generation of Strong F‐Region Field‐Aligned Irregularities

Radio Science, Volume 61, Issue 7, July 2026.
Abstract Field‐aligned irregularities (FAIs) are the signatures of plasma turbulence and convection in the mid‐ and high‐latitude F‐region ionosphere, and also provide coherent backscatter targets for HF radars. To serve irregularity generation and characterization studies, we conducted experiments at the High‐frequency Active Auroral Research Program (
T. S. Anderson, E. H. Lay, I. T. Cummings, C. A. Jeffery, P. A. Bernhardt, M. McCarrick, W. A. Bristow, S. J. Briczinski   +7 more
wiley   +1 more source

Evaluation of candidate models for the 14th generation International Geomagnetic Reference Field

Earth, Planets and Space
In November 2024, the 14th revision of the International Geomagnetic Reference Field (IGRF) was issued by the International Association of Geomagnetism and Aeronomy (IAGA) Division V Working Group (V-MOD).
C. D. Beggan, C. Kloss, A. Grayver, P. Alken, G. Balasis, W. Brown, S. Califf, L. Chauvet, A. Chulliat, M. Fillion, L. Gailler, G. Hulot, M. Korte, V. Lesur, Y. Lin, M. Matsushima, H. McCreadie, T. Minami, M. Nair, S. Nakano, F. J. Pavón-Carrasco, M. Rother, S. Sato, M. Serrano, M. V. da Silva, A. Smith, F. Terra-Nova, E. Thebault, H. Toh, I. Wardinski, C. Xiong   +30 more
doaj   +1 more source

Aircraft Ionizing Radiation Exposure for Solar Cycle 24/25 From ARMAS and NAIRAS

Space Weather, Volume 24, Issue 7, July 2026.
Abstract Exposure to ionizing radiation from galactic cosmic rays and solar energetic particles at aviation flight altitudes can have an adverse effect on human health. Although airline crews are classified as radiation workers by the International Commission on Radiological Protection (ICRP), in most countries, their level of exposure is unquantified ...
Daniel B. Phoenix, Christopher J. Mertens, Guillaume P. Gronoff, W. Kent Tobiska   +3 more
wiley   +1 more source

Assessment of models proposed for the 1981 revision of the IGRF.

Journal of geomagnetism and geoelectricity, 1982
For the second revision of the International Geomagnetic Reference Field (IGRF), the U. S. National Aeronautics and Space Administration (NASA), the U. K. Institute of Geological Sciences (IGS), and the U. S. Geological Survey (USGS) submitted proposed models of the Earth's main magnetic field at 1965.0, 1970.0, 1975.0, and 1980.0, and its secular ...
PEDDIE, N. W., FABIANO, E. B.
openaire   +2 more sources

How the 29 July 2025 M8.8 Kamchatka Earthquake Shook the Ionosphere Over Japan

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract This study investigates the mid‐field (∼1,100–3,800 km) ionospheric response to the 29 July 2025 Kamchatka earthquake over Japan using multi‐instrument observations, raytracing, and numerical simulations. Total electron content (TEC) observations from GPS satellite G04 and Galileo satellite E10 show a maximum TEC perturbation of ∼0.5–0.85 TECU
R. K. Barad, E. Astafyeva, S. A. Sanchez, E. A. Kherani, I. D. Ouar, C. Maréchal   +5 more
wiley   +1 more source