SCIENTIFIC ABSTRACT LIKHACHEV, A. I. - LIKHACHEV, I.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000929910013-7
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: July 12, 2001
• Sequence Number: 13
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

LIKHAGHEV, A.I.
Ionization of the P2 layer as dependent on the penetration
of solar energy into the atmosphere. Goomag. i aer. 2
no.3:1+81-488 My-Je 162, (MIRA 15:1-1)
1. Sibirakiy fiziko-tekhnicheekiy institut pri Tcmskom
gosudarstvennom universitete.
(Ionosphere)

ACCESSION Nit: AT013055
AUTHOR: Likhachev, A.
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S/3658/62/000/041/0044/0048
TITLE: The phenomenon of the limited Increise In Ionization In the F2 layer
SOURCE: Tomsk. Universitet. -Sibirs'kly flzl'kotakhnlcheskly .Insti'tut. Trudy*,
no. 41, 1962., Rezulltaty* obrabotki,materialov po Issledo.vanlyu lonosfery* I
m;gnitnogo polya Zemli za period MGG.I MGS, 41-48
TOPIC TAGS: Ionosphere, F2 layer, atmospheHc ioni'zation, loniz@tlon growth limi-
tation, atmospheric ionization solar activity dependence, recombination coefficient
1, - . i#
ABSTRACT: On the basis of data obtained at.,the Tomsk Ionospheric station, the
author considers the limitation of the growth In electron density In the F2 layer
during years of h;gh solar activity' For th'is purpose, a study was made of the
material obtained at 40 of the worl@ls ionospheric stations during 1958 in order to
consider the phenomenon of the latitudinal Nmitation of the Ionization increment
In the F-region. An attempt Is made to explain this phenomenon on the basis of a
temperature hypothesis Involving a large-scale intrusion of solar radiation into
the Earth's atmosphere and a resultSnt change In the physical state of the at-
mosphere in the F2 layer. The equation for the Ionization of a simple layer:

ACCESSION NR: AT4013055
dNe.,
- . i -
dt
presupposes that the Ionization balance Is the result of the equi libration of only
two processes: Ionization and recombination. However, In real ionospheric condi-
tions (and particularly at the level of the F2 layer), the severe temperature
change that may. take place wil I Inevitably lead to a change In the value of the
effective coefficient of recombination and also to a change In the value of Ne-
On the other hand, the value of the temperature Is, In all likelihood, related to
the influx of solar radiation into the terrestrial atmosphere and an increase in
temperature. should be accompanied by an increase in Ion-formation, and vice versa.
Under conditions of equilibrium In the processes of increasing electron density
due to rising solar radiation and falling electron density due to rising tempera-
ture, with an Increased influx Into the Earth's atmosphere of solar radiation,
the result can be a condition of "heat balance", or the phenomenon of ionization
growth limitation, despite an Increase In the Intensity of Ionizing radiation.
This "temperature balance" can apparently provide an explanation for the disrup-
tion In the linearity of the behavior of experimentally obtained critical fre-
quency values for the F2 layer and their constancy (invariability) during years
of heightened solar activity. In conclusion, the author advances the following
hypothetical mechanism to explain this phenomenon: the process of Ionization is
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ACCESSION NR: AT4oI3055
related to the phenomenon of recombination. With Increasing solar activity the
electron density rises, but thereAs a concomitant Increase In the t'emperature
and decrease in the value of the effective recombination factor; as a result, re-
combination will occur more slowly and the vAlue of the critical frequencies dur-
ing the morning hours will be considerably higher; that Is, the minimum critical
frequencies will rise. Orig. art. has: 3 figures and I formula.
ASSOCIATION: SIBIRSKIY FIZIKO-TEKHNICHESKIY INSTITUT, T014SKIYGOSUDARSTVENNY*Y
UNIVERSITET IM. V. V. KUYBY*SHEVA (Siberian physico-technical institute, Tomsk
State University)
SUBMITTED: 00 DATE ACQ: 27Feb64 ENCL: 00
SUB CODE: AS NO REF SOV: 005 OTHER: 001
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ACCESSION NR: AT4o]3053 S/3058/62/000/041/0062/0067
AUTHOR:
TITLE: Anomalous yearly behavior of the F2 layer as a function of the Influx of
solar radiation into the Earth's atmosphere
SOURCE: Tomsk. Universitet. Sibirskiy fizikotekhnicheskiy institut. Trudy*,
no. 41, 1962. Rezulltaty* obrabotki materialov po issledovaniyu ionosfery* I
magnitnogo polya Zemll za period MGG I MGS, 62-67
TOPIC TAGS: ionosphere, F2 layer, atmospheric ionization, solar radiation, at-
mospheric ionization solar activity dependence, F2 layer anomalous behavior,
critical frequency variation
ABSTRACT: The magnitude of the yearly anomaly of F2 layer Ionization is defined
by the author as the difference between the variation in the ionization of the
layer according to the law of a-simple layer and the actually measured values of
the critical frequencies. The author demonstratesthat thils',yearly anomaly shows
a high degree of correlation with the magnitude of the solar radiation Influx in-
to the Earth's atmosphere. He also shows that the yearly anomaly depends on the
cyclic a.ctivity of the Sun. A method is proposed for forecasting the median
rSon d critical freqtfency values. The so-called yearly anomaly consists of the
Cjn
_71

ACCESSION NR: AT4013053
fact that the noon-time values of the critical frequencies are lower in the
summer than in.the winter. According to the theory of the formation of a simple
ionized layer, the Ionization change during the year should obey the formula:
4, Q.)
f us B -os Z
cr V noon
where zn?gn is the zenith angle of the Sun at noon. While this equation accurate-
ly descr es the annual variation of the critical frequencies of the E and FI
layers, it Is wholly Inadequate to explain the changes that occur in the F2 layer.
in order to determine the effect of the influx of solar radiation Into the at-
mosphere on the value of F2 layer Ionization, the author postulates that during
the winter months at mean latitudes the temperature effect of the solar radiation
is small. He further assumes that the observed values of the critical frequencies
In December at noon differ only slightly from those of a simple layer. Knowing
the December noon-time critical frequency value, a calculation is made, for the
latitude of Tomsk, for the noon-time critical frequencies for the other months,
according to the formula for the variation of a simple layer. On the basis of
this methodological approach, the author concludes that, In the first place,'the
yearly FZ layer anomaly in noon-time values of critical frequencies Is caused by
Cord 2/3

ACCESSION' NR: AT4ci53r@--
the photon radiation of the Sun; in the second place, this anomaly is a tempera-
ture-connected anomaly, since the photon radiation energy must, In the final
analysis, become heat energy; In the third place, the temperature in the F2
layer has, at the end of summer, a higher value, which may be caused either by
the duration of the formative processes or by other factors. Orig. art. has; 3
figures and 2 formulas.
ASSOCIATION; Slbirrakiy fiziko-tekhnicheskiy institut., Tawkiy d6suAwstvenny*y
tmiversitet im. V. V. M.&yx9heva ($iberian Pbysiaotecb-' cal Z=titute,, Tcmsk'
State University)
SUBMITTED: '00 DATE ACQ: 27Feb64 ENCL: 00
SUB CODE: AS NO REF SOV: 001 OTHER: 000
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ACCESSION NR: AT4013059 S/3058/62/000/041/0068/0071
AUTHOR: L
TITLE: The relationship between the daytime Ionization increment of the F2 layer
and the influx of solar radiation Into the atmosphere
SOURCE: Tomsk. Universitet. Sibirskly fizikotekhnicheskly institut. Trudy*, no.
41, 1962. Rezulltaty*obrabotki materialov po issledovaniyu lonosfery*i magnitnogo
polya Zemli za period MGG I MGS, 68-71 .1
TOPIC TAGS: ionosphere, atmospheric ionization, F2 layer, solar radiation,
atmospheric ionization solar activity dependence, daytime ionization increment,
ionization increment latitude dependence
ABSTRACT: The author discusses the latitude-yearly distribution of the diurnal
increment of ionization in the F2 layer. A comparison is made between the influx
of diurnal-solar radiation into the atmosphere of the Earth and the distribution of
the diurnal radiation increment in the F2 layer. it is indicated that the lati-
tudinal anomaly in increment distribution during the summer solstice is the re-
sult of the high influx Of solar radiation into the atmosphere. The author also
concludes that, during solstice- days, the increment distribution Is not proportion-
al to the longitudinal distribution of the Influx of solar radiation; the smaller
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ACCESSION NR: AT4013059
the influx of radiation, the larger the increment. On equinoctial days, the varla-
tion of the increment with latitude agrees with the path of the longitudinal dis-
tribution of the influx of radiation. It was also found that, in solstice periods,
the latitudinal distribution of the Increment is sharply influenced by a limitation
phenomenon which occurs in the event of large-scale intrusion of solar radiation
into the atmosphere; since this is the case, eqqations describing the ionization
state of the F2 layer should take into consideration, in addition to ionization
attenuation due to temperature change, this limitation phenomenon as well. In the
solution of the problem of the relationship between atmospheric ionization and the
sun, a direct link between the Ionization state of the F2 layer and the zenith
angle is not possible unless temperature change and related phenomena are consid-
ered. Orig. art. has: 3 figures.
ASSOCIATION: Sibirskiy fiziko-tekhnJ alciy iustitut, Tonskiy gosudarstvenny*y
tmiverzitet im. V. V. Kuyby*shava (Sibc:@ian Physicoteabidcal Institute, Tcask
@_itate University)
SUBMITTED: 00 DATE ACQ: 27Feb64 ENCL: 00
,SUB CODE: AS NO REF SOV: 001 OTHERt 000
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74 _LlJZM(; GW
-66 _gLiff
@
SOURCE CODE: UR/626-976@/-doo/oon,, 5 5
44C NR: AR5023007
AUTHOR: Likhachev
A. :1
TITLE: of the gain in daily Ionization On thYgx-f rj
Sal-Oar energy into the atmosphere of the earth
SOURCE: Ref. zh. Astronomiya., Abu, 8,51-473
REP SOURCE: Tr. Sibirsk. fiz,-tekhn. in-ta pri Tomskom un-te@ vyp .. `,
45, 1964,-108-112- $
-TOPIC- TAGSt astronomic data, solar radiation 'effect Sckc@.r crle-
ABSILRACT: Data obtained from studies of the dependence.off A ff2pp on
the entry 'of solar wave radiat'ion into the atmosvherel7of thd ear- is
given. The character of the mechanism of*this dependence is clar fied,
as well as the types of deviations, according to data obtained fr m
observations of the Tomsk station during the solar cycles and from a
3eries of other stations in the northern hemisphere during the IGY.
General observations are expressed on possible causes of discrepancies
in the regular relationship, Author's resume
SUB CODE: 03/ SUBM DATEt none
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____EWT(I)ZfVCAWA:(h)
ACC NRB An5ol6451 SOURCE CODE: UR/ol69/65/OOO/OO6/AO34/A034
AUTHOR: Likhachev, Ael.; Gordeyev, O.K.
ORG: none
v/
TIM Interrelation between the @onospherl parameters of the F2 stratum and the
quite-sun variations in Tomsk the magnetic field
SOURCE: Ref. zh. Geofizika, Abs. 6A192
SOURICE: Tr. Sibirsk. fiz,telchn. in-ta pri Tomskom un-te, vyp- 45, 19-44,
3-3-92
TOMC TAGS: ionosphere, Geomagnetic field, solar energy
TRABSIATION: On the basis -of an established relationship between ionosj@heric param-
eters and variations in elements of a geomagnetic field under the effect of solar
energy entering the atmosyhere, regression equations are given for the interrelation-
ship between ionospheric parameters and Sq variations in a magnetic field. It is
shown that the regression equations define the relationship between the observed
values of ionospheric parameters and the Sq variations.
SUB. CODE: 03 04-1 O'S.
UDC: 550-388.2
Card iLl

1 17794-66 Ew(l
p cj.E w h GT
ACCESSION NR: AIR5023008 SOUEM CO-Dg-t--'UR/(2(0/65/(=/CW/0055/0056
AUTHOR:
Likhachey,
ORG: none
TITLE i Functional dependence of the yearLy course of midday critical frequencies
of the F2 ]aYer on the zenith angle of the nun,
SOURCE: Ref zh.Astronomiya, Abs. 8.51-474
REP SOURCE:' Tr. Sibirsk. fiz.-tekhn. ia-ta Pri Toms k et vyp 64
ool un-t 45, 19
138-143,
TOPIC TAGS: astronomic date, solar activity, solar energy, F layer, sun
TRANSIATION: Based on the dependence of the entry of solar energy into the
atmosphere of the earth on the zenith angle of the sun, an empirical formula was
deduced for determining the midday critical frequencies of the F2 layer.as a func-!
tiot of the zenith angle of the sun.
SUB CODE: 03
-C 3L

L 43719-6 V1
6, E T(l)IFCC GW
ACC NR, AT6023733 SOURCE CODE:
AUTHOR: LlUkdhachev A. 1.1, "Ke@arl@yev, Yu. N.; Yegorova, G. V.; Tiznchenko, N. 1.
...........
...........
ORG: none
TITLE: Dependence of sphert@@ n of solar radiation into the
_jqk p rameters on the admissio
earth'B atmosphere
SOURCE: AN SSSR. Mezhduvedomstvennyy geofizichesldy komitet. V razdel programmy
A,IGG: Ionosfera. Sbornik statey, no. 14, 1965. lonosfernyye Issledovanlya, 129-140
TOPIC TAGS: F layer, solar radiation effect, atmospheric Ionization
ABSTRACT: This article presentd data from a study of the relations between Ionization para-
meters of the F2 layer and the zenith angle of the Bun and the influx of solar energy into the
earth's atmosphere. An Investigation of the time variations of the diurnal increment of toniza.-i
tion, which represents the difference between critical frequencies at the maximum (midday
hours) and minimum of the dimmal variation, showed that the maximal value of the increment
of Ionization fig reached during the winter and the minimal value during the summer, and that 1
during the year the change In the increment correlates well with the change of the sine of the
zenith angle of the Bun; the maximal values of the diurnal increment observed during the wintei

L