Results 101 to 110 of about 40,516 (259)

Investigation of Regional Geomagnetic Field Modelling in Indonesia [PDF]

, 2021
<p>This thesis deals with the application of the Spherical Cap Harmonic Analysis (SCHA) modelling technique to obtain geomagnetic field models for Indonesia, which have better resolution and accuracy than the International Geomagnetic Reference Field (IGRF).
openaire   +1 more source

Improved model for solar cosmic ray exposure in manned Earth orbital flights [PDF]

A calculational model is derived for use in estimating Solar cosmic ray exposure to critical body organs in low-Earth orbit at the center of a large spherical shield of fixed thickness.
Atwell, William, Cucinotta, Francis A., Nealy, John E., Shinn, Judy L., Townsend, Lawrence W., Wilson, John W.   +5 more
core   +1 more source

Ediacara Obscura: Unveiling Hidden Magnetisations in the Fen Complex, Southern Norway

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Paleomagnetic directions found in Ediacaran (635–539 Ma) rocks are widely dispersed, which has led to conflicting hypotheses about tectonic regimes and geomagnetic field behavior during this period, and raised doubts about the fidelity of the paleomagnetic record.
Justin A. D. Tonti‐Filippini, Paul Y. J. Antonio, Sven Dahlgren, Rosa de Boer, Leandro Gallo, Petter Silkoset, Bertwin de Groot, Lennart de Groot, Mathew Domeier   +8 more
wiley   +1 more source

Analyzing and modeling gravity and magnetic anomalies using the SPHERE program and Magsat data [PDF]

Computer codes were completed, tested, and documented for analyzing magnetic anomaly vector components by equivalent point dipole inversion. The codes are intended for use in inverting the magnetic anomaly due to a spherical prism in a horizontal ...
Braile, L. W., Hinze, W. J., Vonfrese, R. R. B.   +2 more
core   +1 more source

Drivers of Mid‐Latitude Quiet‐Time Longitude Variations in Ionospheric Density

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract The aim of this study is to provide an observational benchmark of mid‐latitude quiet‐time variability in winds, O/N2, and TEC across longitude and local time to provide a foundation for future model–data comparison studies. The quiet‐time ionospheric structure is not uniform but rather exhibits pronounced longitudinal and local‐time ...
K. R. Greer, L. P. Goncharenko, V. L. Harvey, C. Cullens   +3 more
wiley   +1 more source

HVDC-DNN-MFO: Classifying High-Voltage Direct Current Interference Events in Geomagnetic Field Observation Data Using Deep Neural Network and Moth-Flame Optimization Algorithm

IEEE Access
Geomagnetic field observation data are valuable resources for seismic geomagnetic research. However, the construction of subways, light railroads, and high-voltage direct current transmission lines in recent years has seriously affected the output data ...
Weifeng Shan, Jun Chen, Yanwei Sui, Xinxin He, Qi Li, Lili Xing, Ruilei Zhang   +6 more
doaj   +1 more source

Availability of geomagnetic information

Strategos, 2023
The issue of public availability of the Earth’s magnetic field data is not adequately regulated. The paper presents a proposal to declare geomagnetic information publicly available only when its reliability drops to the reliability of the currently best ...
Mario Brkić
doaj  

An initial analysis of the data from the Polar Orbiting Geophysical (POGS) Satellite [PDF]

The Polar Orbiting Geophysical Satellite (POGS) was launched in 1990 to measure the geomagnetic field. POGS data from selected magnetically quiet days was chosen, quality checked and deleted where thought to be erroneous.
Baldwin, R. T., Langel, R. A., Sabaka, T. J.   +2 more
core   +1 more source

Does the current minimum validate (or invalidate) cycle prediction methods? [PDF]

, 2010
This deep, extended solar minimum and the slow start to Cycle 24 strongly suggest that Cycle 24 will be a small cycle. A wide array of solar cycle prediction techniques have been applied to predicting the amplitude of Cycle 24 with widely different ...
Hathaway, David H.
core   +2 more sources

WACCM‐X Simulation of the Atmosphere From 1950 Through 2024 at an Hourly Resolution

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract Modeling of the upper atmosphere, namely the thermosphere and ionosphere, is becoming important for applications such as orbital propagation (including satellite collision avoidance), radio propagation for communications, radar and position, navigation and timing.
M. K. Brown, S. Elvidge, O. Allanson, D. R. Themens   +3 more
wiley   +1 more source