scholarly journals Dust storm and electron density in the equatorialDregion ionosphere of Mars: Comparison with Earth's ionosphere from rocket measurements in Brazil

2015 ◽  
Vol 120 (10) ◽  
pp. 8968-8977 ◽  
Author(s):  
S. A. Haider ◽  
I. S. Batista ◽  
M. A. Abdu ◽  
P. Muralikrishna ◽  
Siddhi Y. Shah ◽  
...  
Keyword(s):  
Electron Density ◽  
Dust Storm ◽  
Rocket Measurements

Rocket measurements of plasma densities and temperatures in visual aurora

1969 ◽  
Vol 47 (18) ◽  
pp. 1913-1927 ◽  
Author(s):  
A. G. McNamara
Keyword(s):  
Electron Density ◽  
Langmuir Probe ◽  
Optical Emission ◽  
Emission Region ◽  
Electron Component ◽  
Direct Measurements ◽  
Background Density ◽  
Vertical Thickness ◽  
Accuracy Of Measurement ◽  
Rocket Measurements

Direct measurements in active visual auroral forms using electrostatic plasma probes are described. On-board probes and an ejected Langmuir probe were used to provide maximum accuracy of measurement and freedom from perturbations. An electron density of 9.5 × 105 electrons/cm3 was found within a visual band, with a background density of 1.5 × 105 electrons/cm3 outside the band. The ionization maximum occurred at 107 km altitude, with a half-density vertical thickness of 7 km. The temperature of the thermal electrons over the interval 100 km to 168 km was found to range from 500 °K to 1400 °K. A hyperthermal electron component was also observed. A rocket-borne photometer determined the height of the optical emission region, and an array of optical, radio, and magnetic ground-based instruments were used to provide supporting geophysical data, and to define the position and variations of the auroral forms.

PMWE creation mechanism inferred from sounding rocket measurements

2021 ◽  
Author(s):  
Boris Strelnikov ◽  
Keyword(s):  
Electron Density ◽  
Current Knowledge ◽  
Sounding Rocket ◽  
Small Scale ◽  
Sounding Rockets ◽  
Smoke Particles ◽  
The North ◽  
Air Turbulence ◽  
Rocket Measurements

<p>A first sounding rocket campaign dedicated to investigate the creation mechanism of Polar Mesosphere Winter Echoes (PMWE) was conducted in April 2018 from the north Norwegian Andøya Space Center (69°N, 16°E). Two instrumented sounding rockets were launched on 13th and 18th of April under PMWE and no-PMWE conditions, respectively.</p><p>In this paper we give a brief summary of our current knowledge of PMWE and an overview of the PMWE sounding rocket mission. We describe and discuss some results of combined in situ and ground-based measurements which allow <span>to</span> <span>check</span> the existing PMWE theories.</p><p>Our measurements clearly show that the coherent structures in refractive index variations (forming PMWE) are accompanied by neutral air turbulence, which is reflected in small-scale structures (down to some meters) of neutral and electron density. We show that the behavior of the structures under investigation together with the atmospheric background is consistent with the interpretation, that PMWE were created by turbulence. Rocket measurements ultimately show that polar winter mesosphere is abounded with meteor smoke particles (MSP) and intermittent turbulent layers. Furthermore, it becomes clear that charged Meteor Smoke Particles (MSP) and background electron density can only enhance SNR, while turbulence is a prerequisite for their formation.</p>

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