Results 31 to 40 of about 26,415 (203)

Propagation of ULF waves through the ionosphere: Inductive effect for oblique magnetic fields [PDF]

open access: yesAnnales Geophysicae, 2004
Solutions for ultra-low frequency (ULF) wave fields in the frequency range 1–100mHz that interact with the Earth's ionosphere in the presence of oblique background magnetic fields are described.
M. D. Sciffer, C. L. Waters, F. W. Menk
doaj   +1 more source

On the Origin of ULF Magnetic Waves Before the Taiwan Chi-Chi 1999 Earthquake

open access: yesFrontiers in Earth Science, 2021
The ultra low frequency (ULF) electromagnetic (EM) wave activity usually recorded on Earth’s ground has been found to depend on various types of space weather.
Georgios Anagnostopoulos
doaj   +1 more source

Random Forest Model of Ultralow‐Frequency Magnetospheric Wave Power

open access: yesEarth and Space Science, 2020
Models of magnetospheric ultralow‐frequency (ULF) waves can be used to study wave phenomena and to calculate the effect of these waves on the energization and transport of radiation belt electrons.
S. N. Bentley   +3 more
doaj   +1 more source

High-latitude HF Doppler observations of ULF waves. 1. Waves with large spatial scale sizes [PDF]

open access: yesAnnales Geophysicae, 1997
A quantitative study of observations of the ionospheric signatures of magnetospheric ultra low frequency (ULF) waves by a high-latitude (geographic: 69.6°N 19.2°E) high-frequency Doppler sounder has been undertaken.
D. M. Wright   +2 more
doaj   +1 more source

INTERACTION BETWEEN LONG-PERIOD ULF WAVES AND CHARGED PARTICLES IN THE MAGNETOSPHERE: THEORY AND OBSERVATIONS (OVERVIEW)

open access: yesSolar-Terrestrial Physics, 2021
The paper reviews the current state of the problem of interaction between long-period ultra-low-frequency (ULF) waves and high-energy particles. We consider elements of the theory of energy exchange between waves and particles, particle transport across ...
D.Yu. Klimushkin   +3 more
doaj   +1 more source

Capturing uncertainty in magnetospheric ultra-low frequency wave models [PDF]

open access: yes, 2019
We develop and test an empirical model predicting ground-based observations of ultra-low frequency (ULF, 1-20 mHz) wave power across a range of frequencies, latitudes and magnetic local time sectors.
Bentley, S. N.   +6 more
core   +2 more sources

Magnetospheric ULF Wave Phenomena Stimulated by SSC.

open access: yesJournal of geomagnetism and geoelectricity, 1997
Several ssc were recorded simultaneously at the low-latitude longitudinal and along the 210° magnetic meridian networks. The considered ULF wave phenomena stimulated by the ssc comprise main and preliminary impulses, Psc 3 pulsations, ssc-related Pc 3 and cavity-like oscillations. The analysis of observed ssc shows that the preliminary impulse is still
YUMOTO K.   +5 more
openaire   +3 more sources

ULF waves in the Io torus: Ulysses observations [PDF]

open access: yesJournal of Geophysical Research: Space Physics, 1993
Throughout the Io torus, Ulysses has observed intense ULF wave activity in both electric and magnetic components. Such ULF waves have been previously suggested as the source of ion precipitation leading to Jovian aurorae. The peaks of the wave spectra are closely related to the ion cyclotron frequencies, which is evidence of the waves being ion ...
Lin, Naiguo   +9 more
openaire   +2 more sources

Visualization of ULF waves in SuperDARN data [PDF]

open access: yesGeophysical Research Letters, 2003
Measurements of ionospheric E × B drifts obtained with HF radars from the SuperDARN (Super Dual Auroral Radar) Network sometimes show signatures of ULF (few mHz) waves. We present a new data display technique that facilitates the detection of ULF waves in both ground and sea scatter returns.
Ponomarenko, Pavlo V.   +2 more
openaire   +1 more source

Listening to the Magnetosphere: How Best to Make ULF Waves Audible

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Observations across the heliosphere typically rely on in situ spacecraft observations producing time-series data. While often this data is analysed visually, it lends itself more naturally to our sense of sound.
Martin O. Archer   +8 more
doaj   +1 more source

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