The Earth's Electrical Environment (1986) / Chapter Skim
Currently Skimming:
Pages 170-175
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 170... ...
The ion mobility is defined by the drift velocity v of the ions in an electric field E as v = kE (12.2) and depends on the mass, the collisional cross section, and charge of the individual ions (ions are believed to be singly charged in the lower atmosphere)
|
From page 171... ...
Figure 12.6 shows a mean profile (21 soundings) of the positive polar conductivity for quiet solar conditions and a geomagnetic latitude around 50° (Gringel, 1978~.
|
From page 172... ...
are calculated from positive polar conductivity profiles only for quiet solar conditions (A + ) and after solar flares measured on August 8, 1972 (A-691)
|
From page 173... ...
Owing to the low altitude of the layer the total columnar resistance was increased about 30 to 50 percent within these large-scale areas of Sahara dust transport across the North Atlantic. It is estimated that about the same increase of Rc occurs 40: km I 3OI 20 n km Ascent at Pos.
|
From page 174... ...
HOFMANN 'a' 0.3 _ he z m Is Is at lo c, lL 0.4 ' ' ' ' ' ' " 105 POSITIVE IONS: 23-19mb LARAMIE, WY Ko ~ 1.82 cm2 / Vs JUNE 7, 1983 .., ,- r _, N~ ~ ; 1.0 10 REDUCED MOBILITY ( cm 2/ Ve ) 104 2 10 FIGURE 12.12 Reduced mobility spectrum (histogram)
|
From page 175... ...
Whereas only 20 percent of the negative ions show reduced mobilities larger than ~ 1.7 cm2/V see, approximately 43 percent of the positive ions exceed this value and have masses smaller than about 100 emu.
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.