Zobrazeno 1 - 10
of 485
pro vyhledávání: '"M. Oppenheim"'
Publikováno v:
Annales Geophysicae, Vol 30, Pp 1169-1183 (2012)
The beam-plasma mechanism, based on the Langmuir decay process, has been proposed to explain naturally enhanced ion-acoustic lines (NEIALs), which are spectral distortions in incoherent scatter radar (ISR) data frequently observed in the vicinity
Externí odkaz:
https://doaj.org/article/dab2173d4fc445babad369abc63e9c4c
Publikováno v:
Annales Geophysicae, Vol 28, Pp 2169-2175 (2010)
Naturally Enhanced Ion Acoustic Lines (NEIALs) detected with Incoherent Scatter Radars (ISRs) can be produced by a Langmuir decay mechanism, triggered by a bump on tail instability. A recent model of the beam-plasma instability suggests that weak-
Externí odkaz:
https://doaj.org/article/6fcdec158ee044d4bb868d751c7f50e2
Publikováno v:
Nonlinear Processes in Geophysics, Vol 15, Iss 6, Pp 847-862 (2008)
Low frequency electrostatic turbulence in the ionospheric E-region is studied by means of numerical and experimental methods. We use the structure functions of the electrostatic potential as a diagnostics of the fluctuations. We demonstrate the inher
Externí odkaz:
https://doaj.org/article/3d53f3ea549f489bab7566459413d941
Publikováno v:
Atmospheric Chemistry and Physics, Vol 4, Iss 3, Pp 817-824 (2004)
Understanding the global meteor flux at Earth requires the measurement of meteor velocities. While several radar methods exist for measuring meteor velocity, they may be biased by plasma reflection mechanisms. This paper presents a new method for der
Externí odkaz:
https://doaj.org/article/711841b014cb49f9af72ca3694784c72
Autor:
M. Oppenheim
Publikováno v:
Annales Geophysicae, Vol 15, Pp 899-907 (1997)
Ionospheric two-stream waves and gradient-drift waves nonlinearly drive a large-scale (D.C.) current in the E-region ionosphere. This current flows parallel to, and with a comparable magnitude to, the fundamental Pedersen current. Evidence for the
Externí odkaz:
https://doaj.org/article/1b3e151978b946eda249bbd9c4c32c22
Autor:
Frank M. Oppenheim
Josiah Royce's voyage to the South Seas in 1888, undertaken on his physician's advice, restored the philosopher to full physical and mental vigor. What is not so well known is that after a few months of sailing Royce began to'bag new game,'as he put
Autor:
F. I. Laskar, G. Stober, J. Fiedler, M. M. Oppenheim, J. L. Chau, D. Pallamraju, N. M. Pedatella, M. Tsutsumi, T. Renkwitz
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 5259-5267 (2019)
The Andenes specular meteor radar shows meteor trail diffusion rates increasing on average by about 10 % at times and locations where a lidar observes noctilucent clouds (NLCs). This high-latitude effect has been attributed to the presence of charg
Externí odkaz:
https://doaj.org/article/cb5ed4b5f6224d7bbfdb103b5c29dae3
Autor:
Yan Jing Wu, Xinlin Hou, Cheng Peng, Wenwen Yu, Gary M. Oppenheim, Guillaume Thierry, Dandan Zhang
Publikováno v:
Nature Human Behaviour. 6:1169-1179
Human neonates can discriminate phonemes, but the neural mechanism underlying this ability is poorly understood. Here we show that the neonatal brain can learn to discriminate natural vowels from backward vowels, a contrast unlikely to have been lear
Autor:
Frank M. Oppenheim, S.J
Josiah Royce and William James lived in Cambridge, Massachusetts, on Irving Street, just two doors apart, and Charles Peirce grew up only blocks away. John Dewey was born and educated in nearby Vermont. These four great thinkers shared more than geog
Publikováno v:
Journal of Geophysical Research: Space Physics. 128