Articles with "chorus" as a keyword



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Van Allen Probes observations of prompt MeV radiation belt electron acceleration in nonlinear interactions with VLF chorus

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Published in 2017 at "Journal of Geophysical Research"

DOI: 10.1002/2016ja023429

Abstract: Prompt recovery of MeV electron populations in the post-storm core of the outer terrestrial radiation belt involves local acceleration of a seed population of energetic electrons in interactions with VLF chorus waves. Electron interactions during… read more here.

Keywords: interactions vlf; vlf chorus; radiation belt; acceleration ... See more keywords
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Relativistic Electron Increase During Chorus Wave Activities on the 6–8 March 2016 Geomagnetic Storm

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Published in 2017 at "Journal of Geophysical Research"

DOI: 10.1002/2017ja024540

Abstract: There was a geomagnetic storm on 6–8 March 2016, in which Van Allen Probes A and B separated by ∼2.5 h measured increase of relativistic electrons with energies ∼ several hundred keV to 1 MeV.… read more here.

Keywords: chorus wave; electron increase; increase; march 2016 ... See more keywords
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Geographic variation in hybridization across a reinforcement contact zone of chorus frogs (Pseudacris)

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Published in 2017 at "Ecology and Evolution"

DOI: 10.1002/ece3.3443

Abstract: Abstract Reinforcement contact zones, which are secondary contact zones where species are diverging in reproductive behaviors due to selection against hybridization, represent natural laboratories for studying speciation‐in‐action. Here, we examined replicate localities across the entire… read more here.

Keywords: contact zone; hybridization; reinforcement contact; contact ... See more keywords
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Reliability of human estimates of the presence of pups and the number of wolves vocalizing in chorus howls: implications for decision-making processes

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Published in 2017 at "European Journal of Wildlife Research"

DOI: 10.1007/s10344-017-1115-4

Abstract: Management decision-making processes require reliable tools providing information on the distribution, abundance, and trend of populations. Wolves vocalize in response to human imitations of howls. Traditionally, this phenomenon has been the basis of a widespread… read more here.

Keywords: presence pups; number; number wolves; decision making ... See more keywords
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New hiss and chorus waves diffusion coefficient parameterizations from the Van Allen Probes and their effect on long-term relativistic electron radiation-belt VERB simulations

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Published in 2019 at "Journal of Atmospheric and Solar-Terrestrial Physics"

DOI: 10.1016/j.jastp.2019.105090

Abstract: Abstract New wave frequency and amplitude models for the nightside and dayside chorus waves are built based on measurements from the Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS) instrument onboard the Van… read more here.

Keywords: electron radiation; van allen; electron; chorus ... See more keywords
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Microscopic Observations of Pulsating Aurora Associated With Chorus Element Structures: Coordinated Arase Satellite‐PWING Observations

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Published in 2018 at "Geophysical Research Letters"

DOI: 10.1029/2018gl079812

Abstract: Rapid ( read more here.

Keywords: chorus elements; arase satellite; pulsating auroral; chorus ... See more keywords
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Controlling the Chirping of Chorus Waves via Magnetic Field Inhomogeneity

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Published in 2020 at "Geophysical Research Letters"

DOI: 10.1029/2020gl087791

Abstract: Whistler mode chorus waves are coherent electromagnetic emissions in planetary magnetospheres, characterized by rising‐tone or falling‐tone chirping elements. Understanding the cause of different chirping directions and their properties is an important step in resolving the… read more here.

Keywords: field; field inhomogeneity; magnetic field; chorus ... See more keywords
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Electron Diffusion by Coexisting Plasmaspheric Hiss and Chorus Waves: Multisatellite Observations and Simulations

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Published in 2020 at "Geophysical Research Letters"

DOI: 10.1029/2020gl088753

Abstract: We report a rare event of intense plasmaspheric hiss and chorus waves simultaneously observed at the same L shell but different magnetic local times by Van Allen Probes and Magnetospheric Multiscale. Based on the measured… read more here.

Keywords: plasmaspheric hiss; hiss chorus; electron; diffusion ... See more keywords
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Unusual Loss of Van Allen Belt Relativistic Electrons by Extremely Low‐Frequency Chorus

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Published in 2020 at "Geophysical Research Letters"

DOI: 10.1029/2020gl089994

Abstract: Chorus waves with the frequency usually between 0.1 and 0.8 equatorial electron gyrofrequency fce can accelerate energetic electrons to relativistic energies (several mega‐electron volts, MeV). Here, we report a unique event that both regular chorus… read more here.

Keywords: low frequency; frequency; relativistic electrons; unusual loss ... See more keywords
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The Impenetrable Barrier: Suppression of Chorus Wave Growth by VLF Transmitters

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Published in 2020 at "Journal of Geophysical Research"

DOI: 10.1029/2020ja027913

Abstract: Rapid radiation belt recovery following storm time depletion involves local acceleration of multi-MeV electrons in nonlinear interactions with VLF chorus waves. Previous studies of an apparent impe... read more here.

Keywords: chorus wave; barrier suppression; impenetrable barrier; wave growth ... See more keywords
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Statistical Investigation of the Frequency Dependence of the Chorus Source Mechanism of Plasmaspheric Hiss

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Published in 2021 at "Geophysical Research Letters"

DOI: 10.1029/2021gl092725

Abstract: We use data from eight satellites to statistically examine the role of chorus as a potential source of plasmaspheric hiss. We find that the strong equatorial (|λm| < 6°) chorus wave power in the frequency… read more here.

Keywords: frequency range; plasmaspheric hiss; frequency; source ... See more keywords