Imaging of polar cap patches with a low-cost airglow camera: pilot observations in Svalbard, Norway
Earth, Planets and Space, 2019 We evaluate the capability of a low-cost all-sky imager (ASI), which has been operative in Longyearbyen (78.1° N, 15.5° E), Norway, to detect 630.0 nm airglow signatures of polar cap patches.
Keisuke Hosokawa +2 more
doaj +1 more source
A multi-diagnostic approach to understanding high-latitude plasma transport during the Halloween 2003 storm [PDF]
Annales Geophysicae, 2008 During the Halloween 2003 storm event, significant electron density enhancements at elevated F-layer altitudes were recorded by the EISCAT and ESR radars in northern Europe between 20:00 and 24:00 UT on 30 October.
P. Yin +4 more
doaj +1 more source
Association of Radio Polar Cap Brightening with Bright Patches and Coronal Holes [PDF]
The Astrophysical Journal, 2017 Abstract Radio-bright regions near the solar poles are frequently observed in Nobeyama Radioheliograph (NoRH) maps at 17 GHz, and often in association with coronal holes. However, the origin of these polar brightenings has not been established yet.
Caius L. Selhorst +5 more
openaire +2 more sources
, 2021 Polar cap patches are known as islands of enhanced electron density in the polar cap F region ionosphere. To observe the airglow signature of polar cap patches continuously at a fixed point near the center of the MLAT/MLT coordinate system, we started ...
Shiokawa, K. +7 more
core +1 more source
Plasma patches inside the polar cap and auroral oval: the impact on the spaceborne GPS receiver
Journal of Space Weather and Space Climate, 2019 In this study, we focus on plasma patches with very dense plasma in the southern hemisphere during the main phase of 2015 St. Patrick’s Day storm. With in situ electron densities exceeding 1.5 × 1012 m−3 at 450–500 km altitude, the patches cause strong ...
Xiong Chao +4 more
doaj +1 more source
A modeling study of asymmetries in plasma irregularity characteristics near gradient reversals [PDF]
Annales Geophysicae, 2016 Asymmetries in plasma density irregularity generation between the leading and trailing edges of the large-scale plasma density structures in the high-latitude ionosphere are investigated.
L. J. Lamarche, R. A. Makarevich
doaj +1 more source
GPS phase scintillation at high latitudes during geomagnetic storms of 7–17 March 2012 – Part 2: Interhemispheric comparison [PDF]
Annales Geophysicae, 2015 During the ascending phase of solar cycle 24, a series of interplanetary coronal mass ejections (ICMEs) in the period 7–17 March 2012 caused geomagnetic storms that strongly affected high-latitude ionosphere in the Northern and Southern Hemisphere ...
P. Prikryl +20 more
doaj +1 more source
Analysis of close conjunctions between dayside polar cap airglow patches and flow channels by all-sky imager and DMSP [PDF]
, 2016 Recent imager and radar observations in the nightside polar cap have shown evidence that polar cap patches are associated with localized flow channels. To understand how flow channels propagate from the dayside auroral oval into the polar cap, we use an ...
Frey, Harald U. +13 more
core +1 more source
Fiber‐Based Wearable Electronics as Adaptive Biointerfaces for Healthcare Applications
Advanced Functional Materials, EarlyView.Fiber‐based wearable electronics have been extensively studied as adaptive healthcare biointerfaces. In this review, we classify and introduce fiber‐based systems according to biointerface design, conductive materials, transduction mechanisms, and healthcare applications, and provide a perspective on their translation toward reliable, continuous ...
Sangwoo Hong +5 more
wiley +1 more source
Polar patches observed by ESR and their possible origin in the cusp region [PDF]
Annales Geophysicae, 2000 Observations by the EISCAT Svalbard radar in summer have revealed electron density enhancements in the magnetic noon sector under conditions of IMF Bz southward.
A. M. Smith +4 more
doaj +1 more source