منابع مشابه
Taxonomic consequences of cryptic speciation in the Golden Whistler Pachycephala pectoralis complex in mainland southern Australia.
The Golden Whistler (Aves: Passeriformes: Pachycephalidae) Pachycephala pectoralis sensu lato has long played a key role in the development of the theory of allopatric speciation (Mayr 1932a, b; Mayr 1942; Galbraith 1956). The P. pectoralis species complex formerly comprised 60-70 nominal subspecies and so had a distribution spanning the Indo-Pacific (Boles 2007). More recent taxonomic treatmen...
متن کاملDetection of Whistler Waves
A whistler wave is a very low frequency electromagnetic wave generated by lightning discharges. As the electromagnetic wave travels through the plasma environments of the ionosphere and magnetosphere, it undergoes dispersion of a several thousand kilohertz. Because the propagation velocity decreases with frequency, the lower frequency components of the wave arrive later than the higher frequenc...
متن کاملWhistler intensities above thunderstorms
We report a study of penetration of the VLF electromagnetic waves induced by lightning to the ionosphere. We compare the fractional hop whistlers recorded by the ICE experiment onboard the DEMETER satellite with lightning detected by the EUCLID detection network. To identify the fractional hop whistlers, we have developed software for automatic detection of the fractional-hop whistlers in the V...
متن کاملWhistler Emission by Electron Beams
Experimental and theoretical investigation of whistler waves produced in the interaction of a density modulated electron beam with a magnetized plasma are presented for the conditions of active space experiments in the Earth ionosphere as well as for the case of overdense laboratory plasmas. Structures of the electromagnetic fields far and near the beam, efficiency of the beam modulation, emitt...
متن کاملWhistler Wave Cascades in Solar Wind Plasma
Nonlinear three dimensional, time dependent, fluid simulations of whistler wave turbulence are performed to investigate role of whistler waves in solar wind plasma turbulence in which characteristic turbulent fluctuations are characterized typically by the frequency and length scales that are respectively bigger than ion gyro frequency and smaller than ion gyro radius. The electron inertial len...
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ژورنال
عنوان ژورنال: The Iowa Review
سال: 2006
ISSN: 0021-065X,2330-0361
DOI: 10.17077/0021-065x.6193