scholarly journals Radar Observations of Flows Leading to Substorm Onset Over Alaska

2021 ◽  
Vol 126 (2) ◽  
Author(s):  
Larry R. Lyons ◽  
Jiang Liu ◽  
Yukitoshi Nishimura ◽  
Ashton S. Reimer ◽  
William A. Bristow ◽  
...  
Keyword(s):  
Substorm Onset ◽  
Radar Observations

scholarly journals Radar Observations of Flows Leading to Longitudinal Expansion of Substorm Onset Over Alaska

2021 ◽  
Vol 126 (2) ◽  
Author(s):  
Larry R. Lyons ◽  
Jiang Liu ◽  
Yukitoshi Nishimura ◽  
Chih‐Ping Wang ◽  
Ashton S. Reimer ◽  
...  
Keyword(s):  
Substorm Onset ◽  
Radar Observations

The Features of Radar Observations of Snow Cover from Space-Borne Carriers

2007 ◽  
Vol 66 (12) ◽  
pp. 1133-1141
Author(s):  
S. Ye. Yatsevich ◽  
V. B. Yefimov ◽  
I. A. Kalmykov
Keyword(s):  
Snow Cover ◽  
Radar Observations

A Report on Radar Observations of 5-8-day Waves in the Equatorial MLT Region

2006 ◽  
Vol 84A ◽  
pp. 295-304 ◽  
Author(s):  
Sundararajan SRIDHARAN ◽  
Toshitaka TSUDA ◽  
Takuji NAKAMURA ◽  
Robert A. VINCENT ◽  
EFFENDY
Keyword(s):  
Radar Observations ◽  
Mlt Region

Rain-induced characteristics in C- and X-band synthetic aperture radar observations of tropical cyclones

2021 ◽  
Vol 12 (6) ◽  
pp. 573-584
Author(s):  
Xinzhe Yuan ◽  
Weizeng Shao ◽  
Bing Han ◽  
Xiaochen Wang ◽  
Xiaoqing Wang ◽  
...  
Keyword(s):  
Synthetic Aperture Radar ◽  
Tropical Cyclones ◽  
Synthetic Aperture ◽  
Radar Observations ◽  
X Band ◽  
Aperture Radar

scholarly journals Decay of the Dst field of geomagnetic disturbance after substorm onset and its implication to storm-substorm relation

1996 ◽  
Vol 14 (6) ◽  
pp. 608-618 ◽  
Author(s):  
T. Iyemori ◽  
D. R. K. Rao
Keyword(s):  
Ring Current ◽  
Geomagnetic Storms ◽  
Sharp Decrease ◽  
Geomagnetic Disturbance ◽  
Substorm Onset ◽  
Significant Development ◽  
H Index ◽  
Magnetospheric Tail ◽  
Storms And Substorms ◽  
Substorm Onsets

Abstract. In order to investigate the causal relationship between magnetic storms and substorms, variations of the mid-latitude geomagnetic indices, ASY (asymmetric part) and SYM (symmetric part), at substorm onsets are examined. Substorm onsets are defined by three different phenomena; (1) a rapid increase in the mid-latitude asymmetric-disturbance indices, ASY-D and ASY-H, with a shape of so-called `mid-latitude positive bay\\'; (2) a sharp decrease in the AL index; (3) an onset of Pi2 geomagnetic pulsation. The positive bays are selected using eye inspection and a pattern-matching technique. The 1-min-resolution SYM-H index, which is essentially the same as the hourly Dst index except in terms of the time resolution, does not show any statistically significant development after the onset of substorms; it tends to decay after the onset rather than to develop. It is suggested by a simple model calculation that the decay of the magnetospheric tail current after substorm onset is responsible for the decay of the Dst field. The relation between the IMF southward turning and the development of the Dst field is re-examined. The results support the idea that the geomagnetic storms and substorms are independent processes; that is, the ring-current development is not the result of the frequent occurrence of substorms, but that of enhanced convection caused by the large southward IMF. A substorm is the process of energy dissipation in the magnetosphere, and its contribution to the storm-time ring-current formation seems to be negligible. The decay of the Dst field after a substorm onset is explained by a magnetospheric energy theorem.

Modeling and simulation of sea surface radar observations

2010 ◽  
Author(s):  
A Ghaleb ◽  
S Even ◽  
R Garello ◽  
B Chapron ◽  
N Pinel ◽  
...  
Keyword(s):  
Modeling And Simulation ◽  
Sea Surface ◽  
Radar Observations

scholarly journals 32. Meteor mass distribution from radar observations

1968 ◽  
Vol 33 ◽  
pp. 343-351
Author(s):  
B.A. McIntosh
Keyword(s):  
Mass Distribution ◽  
Electron Attachment ◽  
Radar Observations ◽  
Long Duration ◽  
Radar Echo

There are many problems in deducing the meteor mass distribution from radar echo observations. Some of these are reviewed in this paper, particular emphasis being placed on the effects of electron attachment and of equipment parameters on the statistics of long-duration echoes.

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