Results 71 to 80 of about 756,404 (200)

Validation of Clyde River SuperDARN radar velocity measurements with the RISR-C incoherent scatter radar [PDF]

Annales Geophysicae, 2018
The study considers simultaneous plasma velocity measurements in the eastward direction carried out by the Clyde River (CLY) Super Dual Auroral Radar Network (SuperDARN) high-frequency (HF) radar and Resolute Bay (RB) incoherent scatter radar – Canada ...
A. Koustov, R. Gillies, P. Bankole
doaj   +1 more source

Tracking Slow‐Moving Landslide Responses to the 2023 Kahramanmaraş Earthquake With InSAR

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 10, October 2026.
Abstract Strong earthquakes can have a dual impact on the slow‐moving landslide budget of a landscape by either triggering new actively deforming hillslopes or stabilizing existing ones. However, their regional‐scale influence on hillslope processes remains poorly understood because of limited observational coverage and the masking effects of long ...
Ashok Dahal, Hakan Tanyaş, Alexander L. Handwerger, Luigi Lombardo, Eric J. Fielding   +4 more
wiley   +1 more source

A case study of HF radar spectral width in the post midnight magnetic local time sector and its relationship to the polar cap boundary [PDF]

, 2002
International audienceThe aim of this paper is to advance the current understanding of the spectral width parameter observed by coherent high frequency (HF) radars. In particular, we address the relationship of a frequently observed gradient, between low
J. A. Davies, Davies, J.A., Eglitis, P., P. Eglitis (7605143), P. Eglitis, Woodfield, E.E., Lester, M., M. Lester, J. A. Davies (4412452), Emma E. Woodfield (7657994), M. Lester (7589660), Davies, J. A., E. E. Woodfield, Woodfield, E. E.   +13 more
core   +1 more source

Momentum flux determination using the multi-beam Poker Flat Incoherent Scatter Radar [PDF]

Annales Geophysicae, 2012
In this paper, we develop an estimator for the vertical flux of horizontal momentum with arbitrary beam pointing, applicable to the case of arbitrary but fixed beam pointing with systems such as the Poker Flat Incoherent Scatter Radar (PFISR).
M. J. Nicolls, D. C. Fritts, D. Janches, C. J. Heinselman   +3 more
doaj   +1 more source

Physics‐Based Ensemble of Models for F2 Peak Parameters of the Ionosphere: Comparison With COSMIC‐2 Measurements

Space Weather, Volume 24, Issue 10, October 2026.
Abstract Space weather events can significantly alter the ionospheric electron density, affecting signal transmission and navigation accuracy in satellite‐based systems. Consequently, there is an urgent need for reliable forecasting of the Thermosphere‐Ionosphere (TI) system.
J. Pereira, I. Fernandez‐Gomez, F. Heymann, F. Günzkofer, C. Borries, M. Schmidt   +5 more
wiley   +1 more source

The Qujing incoherent scatter radar: system description and preliminary measurements

Earth, Planets and Space, 2018
The Qujing incoherent scatter radar (QJISR), the first one in China with the geographic location (25.6°N, 103.8°E), was brought into operation since the spring of 2014.
ZongHua Ding, Jian Wu, ZhengWen Xu, Bin Xu, LianDong Dai   +4 more
doaj   +1 more source

Chorus Wave‐Induced Ionospheric Variability

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Electron microbursts are short‐lived but intense electron precipitation and constitute a significant source of electron losses into the ionosphere and lower atmosphere. They are primarily produced by wave‐particle interaction with chorus waves in the magnetosphere.
Lunjin Chen, Grant D. Berland, Robert A. Marshall, Jun Liang, Huayue Chen, Zhiyang Xia   +5 more
wiley   +1 more source

Geomagnetic Field Influence on Trans‐Ionospheric HF Wave Propagation via Topside Z–to–O Mode Conversion

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Satellite observations during ionospheric modification experiments have reported trans‐ionospheric high‐frequency (HF) wave propagation even when the pump frequency lies below the peak plasma frequency. Such behavior is often attributed to large‐scale density irregularities that locally permit ordinary‐mode (O‐mode) propagation, but this does ...
Danish Naeem, Dong‐Hun Lee, Kihong Kim
wiley   +1 more source

Comparing VHF coherent scatter from the radar aurora with incoherent scatter and all-sky auroral imagery [PDF]

, 2012
VHF coherent scatter radar observations of an auroral substorm over Alaska are analyzed in the context of multibeam incoherent scatter plasma density and drifts data and green-line all-sky optical imagery.
Heinselman, C., Lessard, M., Miceli, R., Hampton, D., Lynch, Kristina A, Munk, J., Nicolls, M., Powell, S., Hysell, D.   +8 more
core   +1 more source

Materials and Music: Selective Imperfection as a Generative Framework for Analysis, Creativity and Discovery

Interdisciplinary Materials, Volume 5, Issue 5, Page 834-867, September 2026.
Vibrations in matter, from spider webs to molecules, water to flames, share a grammar with music. We propose that creativity emerges when constraints force expansion beyond existing possibilities. Selective imperfection restores balance, enabling invention.
Markus J. Buehler
wiley   +1 more source