oe eh / Approden For Rglease ollie erorssuaparanadihayeints) ii Z 203/62/002/006/010/020 | . ; 3 YW 20 . : A160/A101 |" “caunHoRs:! Mishin, V. M., Naydenova, N. Ya., Platonov, M. L. | fyb! TT LE: | ~The diurnal variation of the probability of the appearance of the = | commencements, the active periods and the ends of magnetic storms ||) PERIODICAL: Geomagnetizm i aeronomiya, v. 2, no. 6, 1962, 1107 - 1112, oe | : ors investigate the probability of the appearance of the--- i : rea coments tho active periods and the ends of magnetic storms on he basis Bo . of the Irkutsk Storms Catalog for 1905 - 1917 and 1925 - 1959. The catalog meet . describes 820 storms, A total of 539 of them are storms with a ers art pommene a “ment, Figure 1 presénts the curves Su6 (nb), San (ap) and Sa for Ir _ sk. ore dinates in curve 1 represent the frequencies of the commencement of % e 5 oe -° Typ» in curve 2 ~ the frequencies of the active hours Ngps and in curve 3 a  gauivalent amplitudes Ri. Similar distinctions between Sa and Sip were also, : observed at all other stations, These data, characterizing the phases oo maximum of the first harmonic of Sa and Snp, are presented in a table. tS) : . f Qe. .., authors explain these results by proposing that Snp may be sonaidered as a ve ; . _ OO © 8/203/62/002/006/010/020 «|. _: The diurnal variation of the...° Co 4160/A101 . “, sult of Sa, It is followed that the probability of a‘cdntact of the corpuscular’, *. a4 _ flux with the Earth does not defend on the time of the fay. This conclusion is .\:/; _ confirmed by the fact that, accerding to the mentioned catalog, the diurnal _ oo variation of the frequency of SC practically does notpexist. The authors then rar aa investigate the total of all storm days and introduce .the following four hypo-" - r _ theses,. 1) The probability that there is a contact between the flux and: the : _Earth,. causing the storm is equal :for all hours of a day. 2) The magnetic Bor 2 /, tavity during the hour of the commencement of the storm A is not lower than that 9° - —!° during an average storm 7: A >A. 3) The values.of A during the initial hours =.) . of the storms are determined by Sa on the basis of the perturbed days, 4) The | _.. ‘Length of each storm is p 12 hours. The distribution of the. probabilities of © Jy ‘the commencement of the storms over the hours of the day P (T) will be as fol- | “ie. lows: P = 0 in two 6-hour. intervals T< 0, - 90° and T > oly. +.90° (Figure 2; er pis hatehing),.P = 1/24 in the 11-hour thterval Oe + 90° B E> Oly = 75°, P= 13/24 "in one hour containing the moment T, =O, = 900, Such a distribution of ‘the | Si “| probability P (T) has the form of a try-square shown on. Figure 2, ‘The authors make the following conclusions, 1) It was détermined : that the commencements of =. the storms (recorded at. the givenistation) are generally shifted to the side of . 1 The diurnal variation of the... / | ' 8/203/62/002/006/010/020 A160/A101 3 - with the Earth, 2) The. ' G-storms have a shock front, 3) that the fluxes Causing the: | | os ay The main result of : : bo “| erin the clearly-expressed variations S. and Spe and thee description | ®& ning these variations a8 @ result of Sa, There are 4 figures nal oka , ASSOCIATION: Institut zemno * “ pola og gO magnetizma, 4 nent vA ‘nade py. SO AN SSSR (Institute of Terresteias ome. eProstraneniya Padiovoln.: estrial 7 ‘ - Wave Propagation of SO, AS USSR). aa Magnet _. SUBMITTED: . June 23, 1962 : “ Bighre 1 ab Mud 5m, Ionosphere and Radio 0 ep pt a fi . a * t. u | Gis ape _. + Approved For RelSase"264/1/03/26 : CIA-RDP96-00787R000500130080-7 /:
FIRM NO. leave’ 00%/03/HACENSSBHGs-oo7sneboosdotsopgosk2 — ub 1 4047 Approved For- CODE | COUNTRY ACTIVITY CODES USSR 113 { | re . . S/T | NAME OF INSTALLATION . et IKuTS K ail AGNe Te “To ntoS Peer ee ¥) Ta. DATE/SOURCE source CIA/OSI-RA/61-11 SCIENTIFIC INTELLIGENCE RESEARCH AID CONTROL NO. PRINCIPAL RADIOTELESCOPES OF THE SOVIET UNION IRKUTSK SOLAR STATION Alternate Name: Laboratory for Solar Study Subordinate to: Institute of Terrestrial Magnetism, Ionosphere and Radiowave Propagation, Moscow. In 1959 subordinate to the Irkutsk Lonosphere-Magnetic Station of the Ministry of Communications Location: Meget, near Irkutsk, RSFSR 52° 28' N- 104° o2' EB Functional De scription Technical Description Personalities Other Information 7 Approvéd For Reéleasé 2001/03/26 : CIA-RDP96-00787R000500130080-7 12-60 O26 USE PREVIOUS EDITIONS. (20)
SUBJECT: Mor r*hiy Repo AID Work Assi ~ment No, 3 " Approved For Relgase 200NG3/26 : CIA-RDP96- 00%97R000500130080- 7 PERIOD:: May 1961 This is the thirteenth in a monthly report series reviewing Soviet developments in astrophysics and geophysics, Poginning with this report the series identification . 48 changed to read AID Work Assignment No. 3, replacing the previous designation Pro- Jest 521007, Task 3, The report is based on materials received at the Air Information Division in May. Materials in this report deal with the following topics: II. Solar radiation and the Lonosphere III. Van Allen belts and cosmic rays IV. Telluric currents V. Atmospheric electricity VII. Satellite and missile data Approved For Release 2001/03/26 : CIA-RDP96-00787R000500130080-7
2 influenced not nly, tre value 6f the\earth currg * vaxtations,| but their Aineontecbf areRelegse 200¢/08626 e:CioR DPS6-0OGhOTROCHIOOTE GU Oe earth current/field has a regional character mpst therefore be reexamined, | In 1956 |work was concentrated algng two youtes, the Voyempno- Gruzinskaya Kighway and in the Kartliyskaya plain. ep route] was extended along the Sirami-Dzlrula highway immqdiately fon the ¢rys-~- tallime rockaé of the/Dzirul'skiy massif. Correlation jof results showed the EW component to play the dpminant tole. Thus, the}1956 studies confirmed the existence of an] approximately latitudinal dire¢tion of |the telluric currents, cbrresponding to the diregtion of the folding of the Caucasus range.| A high|value o the telluro- araneter wag noted in the region of Cretaceous limestones Charitali, Pasanauri} and shales (Krestovyy pqreval). | The Darial '~ skiy kranite massif (Tamaris7;Tsikhe) phowed a/high vajue. Thg measurements made in jthe Karfliyskaya] plain (Medzhvriskhevi, Kveshi, Tkviawi, Muguti) completely cpnfirm the data pf 1955, |and measurements Bt points near duteroppings of the crystalline massif (Plevi)) or on| the very massif] (Rikotil, Khevi,|Vertkvil'Chala) cion- firm doncluaiions madd to the effect that there is a sharp increase 4n the\values of the |telluroparameter, the clpser the \crystalyine rocks @pprosth the surface, or in measbremenys made on\outeryppings of erystariine rocks. The investigations showed that it 1s possible to study the geotegical structupenwith the telluric current method, both by shért period variations and by data,on-the daily march/of varia- tions.\ The latter method is preferred. \Particularly/ good quali- pling the Kartliyskaya |plain, 1.e/, relatively good conducting yocks underlain/ by high-resistande fromations. The/matter ¢f ob- aining accurate quantitative data on the; thickness/ and depths of heds of| a given! geologic formatipn is quite difficyit and requires urthen systematic investigationp. ament: /The method used py the authors is sound and {the esults \obtained prove \the feasibility of\applyipig the tellyric method to geologic prospecting. Nt canriot be used fer t oF at Tre & 6@ pts a Va 2 2.) Vinogradov, P, A. Diurnal distribution of steady short period oscillations of the terrestrial electric field accord~ ing to observations at the Uzur station (Lake Baykal). IW: Akademiya nauk Gruzinskoy SSR, Tiflis. Institut geofiziki. Trudy, v. 18, 1960, 43-52. QB500,.A55 Approved For Release 2001/03/26 : CIA-RDP96-00787R000500130080-7 ry
; Apprthied 5 okdtealease12001 /03126 + SHAMBEROA-O Ob RAINS001 SONA0- gn of the Scientific Research Institute of Terrestrial gnetism, the ionosphere, and Radio Wave Propagation A station was set up on 01 'khon é kal to make uninterrupted recordings of short period Pe (steady) oscillations in the terrestrial electric field using equipment with a sensitivity (0.02 mv/cm/mm) higher than had hitherto been possible. It was thus possible to record Pe oscillations of a very small intensity. The station operated constantly from 10 Sep 1955 to 17 May 1957. The length of the east-west pickup line was 1000 m, while the north-south line was 500 m. The observational data obtained, chiefly on the daily distribution of Pe oseillations, provided in- formation on the characteristics of short-period oscillations, the terrestrial electric fleld, and the influence of the screening properties of the ionosphere. Of 322 days examined 288 (89.5%) had Po oscillations. The minimum number of days without Pe oscillations was noted in March and September, while the greatest number occurred in February and July. Daily Pe distribution has the highly pronounced form of e@ Simple wave with a daytime maximum and a nighttime minimum. A Blight shift in the time of onset of extremal values from winter to summer was observed. In winter the greatest number of steady oscillations are observed at 14-1500 hours, while in summer, at 12-1300 hours,local time. The amplitude of the daily Pe curve during the equinoctial periods is somewhat smaller than at other times of the year. The Fe excitation frequency in the period of least development (00-0300 hours,local time) is about three times lesa than the frequency of appearance in the period of maximum de- velopment of these oscillations (11-1500 hours, local time). Com- parison of Pe distribution curves according to the value of the period shows that in the equinoctial months the predominance of Pe recurrence with a period of 20-30 sec over Pe with other perioda ig noticeably higher than at other seasons of the year. Results did not resolve the question as to whether the short period oseil-= lations are excited simultaneously throughout the world (a view held by V. A. Troitskaya) or whether they occur according to local time (the view of R. A, Zevakina and V. V. Kebuladze). In some cases the Ugur station reported Pe excitation time to occur at intervals established by Troitskaya, while in other cases the ex- citation was connected with local time. The Uzur station could find no direct relationship between the daily distribution of the frequency of Pe appearance and the screening of the earth's surface by the lonosphere, since the most intense Pe and most frequent short period oscillations are observed at hours when the greatest screening action of the lonos- phergepfeved PoeReRas 2004108262 1C HRP 96 -COFEERGS0S601 S005
latter, shout Q [AoRbPIs.007. ODBRg + cop Tevesh EDE Ra Rae Sat FGs/20 he) Simultaneously over large areas and that their excitation is connected with upper atmospheric processes, In the summer of 1955 simultaneous recordings of short period oscillations were made in 2uy and on Ushkaniy Island, Processing of the records by the conjugate ellipse method showed a sufficiently steady relationship between Pc components in the form: um ax + by, v = cx + dy where x and y are the Pe components on Bol'sho Ushkaniy Island and u_and v are the Pe components in Zuy. “Comparison showed that the Pe amplitude on Ushkaniy is abouf 12-25 times greater than the am- plitude of the same oscillation in Zuy. In eases when almost total Pe attenuation is observed, the traces on the Ushkaniy records dis- appear somewhat later and &ppear earlier, than in 2uy, but sharply pronounced Pe within the limits of measurement accuracy are excited Simultaneously. These Pc excitation characteristics are, apparently, determined by the location of Ushkaniy Island and ita Beologic struc- hours of several days was detected in the Pec records. Thus, for example, from 1 Apr through 10 Apr 1952. intensive Pe, having about the same regime at the sane time of the day, were observed. These oscillations were eonnected with a very stable and geophysically active region of the sun observed at that time. A sharp Pc increase after the commencement of geoelectric field storms is sometimes observed, This Pe intensity increase ig particularly noticeable when the commencement of the storm occurs during hours of weak Pe development. Another characteristic of Pe excitation, connected with terrestrial electromagnetic storms and auroras, is the broadening of the Spectrum of short period ogcilla- tions during the phenomena. [Jt 1s noted that on quiet days chiefly Pe with a period from 10 to 30-40 and more seconds are observed, While during auroras, oscillations with a period from 1 to 60-70 and more seconda are observed, Of all oscillations of the indicated Bpectrum those with a period of about 1-2 sec are particularly evident; oscillations with a period of about 2 sec occur more often than oscillations with a period of about 1 sec, An almost complete constancy of the period for the entire interval 1a characteristic of oscillations of both groups. _ Comment: Vinogradov's investigation of the Steady telluric current oscillations and the dependence of their amplitudes upon Approved For Release 2001/03/26 : CIA-RDP96-00787R000500130080-7 - 25 «
_the seasons is of import. The data obtained sh-s , geolApbrowerinan Release nd 0siasie aeve manos -Oh cay BOOS ObA SODRG TA - tude of oscillations, The character of oscillations can be used a5 & means for studying the ground composition. 3.) Continuous round-the-clock recordings of telluric curreht varsations have been conducted \at the Dusheti station from the Butums_of 1947 to 1 Jul 1997 ork mutus ly perpendicular overground ‘ines With a recording spéed of\20 andNio mm/nr. In e spring of 1957 the existing pickyg lines were recomatructed and new equipment introduced te record variations |at three rates. / detailed descrip- tlon 1s provided of the lines arid electrodes the’ 80 mm/hr record- ing equipment for éarth current ivariations, the<20 mm/hr equipment, and the 30 mm/m recording equipment for sho«t period variations. The 195/ tellurograms were processed With the aim of studying the daily sdélar march of the earth currefit potential pradients and of invest%gating the question of; the périodicity of protracted electrovélluric disturbances. In addition, since 1 Jul 1957 inde- pendently flowing bay-shaped distur tions, Budden commencement dis} phances, separated impulses, ox OBcillations and short period }gscillations of a stable regime “were studied. The methodology of processing observational matemMals de described in detail elsewhere | (Tdady Instituta geofizik})’ AN GSSR, ¥. 2, 1953). After taking’ the ordinates from the 20 mm/ir telluro- gvamB, monthly tables of the mean hourly the EW Nand NS components were compiled, — : daily mareh in weré calculatef, and on the basis <6f these data the daily Salar march according jto month, seagon, and yearly mean were deduced.\ Apélysis of this material produds mean yéarly dabiy-solar march of /the EW componént similar to curves obtained in 1948566. The mean yearly daily pfarch sf the EW com- ponent is a double \wave with badiic maxima pétween 8-\000 and 16-1800 hours, and bagic minima between 08-0700 and 1341500 hours solar time.\ The amplitudes of the daily maréh in the Summer gnd equinoctial manths considerably exceed the amplitudes of the’winter months. Tha daily mar curve of the NS conpoanent 18 very weakly expressed, The mean /yearly hodograph of conta ZOontal component extends latitudindlly, indicating a predominance of/ latitudinal currents in thé. region of the electroteliluric Sfation, Approved For Release 2001/03/26 : CIA-RDP96-00787R000500130080-7 - 26 -
. Approved Fordze les 0208) W126 6 GeoRDR9S 0 WAAROIA50G 1300807; from| several hour: jo several days, was studi by gompiling month- ly tables of bari” alues of the maximal amplitudes of variation, dally evaluations actording to p-point hourly characteristics, ahd by cqmpiling A catalog of electroteliuric storms and distrubancesb. Hourly valued of maximal amplitudes were determingd for poth diatur- bances and qpiet days. Curved were fdund to be analogous with those of former years. A Maximal nymber of jdisturbed Aours odcurred from 18-2400 hours, and minimal from 03-0660 hours, Wniversal time. / In regard to the yearly march curve of 1957, the greatest number df digtupbed hpura took place in the equinoctial months, gnd the least in the months of the summer And winteb solsti¢e. Electrotellunic activity inf 1957 was\ consid rably higher thay in 1948-46. Ye num ber of \disgurbed houns in 957 was 1250-130, while in the #@rlier period fi ad averaged t1r00 per year. Catalog data /show|the é _ Plage in the equimoctial mo t of baly-shaped disturbances took placf ompletely absent in June,/and ir Septembe only Further propesaing and /correlations are/necesss may, be drawn, Although limited arga only aind at hut one 4.) Vinogradov, P. A. Changes in the potential gradient of the electrotelluric field at different depths of Lake Baykal, IN: Akademiya nauk SSSR, Baykal ‘skaya limnologicheskaya Stanteiya, Trudy, v. 18, 1960, 380-392. DK771.B3A1 The equipment used in the Lake Baykal region from 20 Feb through 1 Apr 1955 to make continuous recordings of the variation of the potential gradient of the electrotelluric field consisted of a photogalvanograph and five pick-up lines, three of which lay in an ‘east-west direction and two in a nerth-south direction, The electrodes of the eastern lines were submerged to depths of 5,200, and 1,100 m; those of-the northern line to depths of 5 and 400 wm, All electrodes in the same direction were in 4 single vertical plane, 0.4 m? lead plates served as electrodes. ach line wag 500 m long. JICM wire was used to link the electrodes to the re- cording equipment. The insulation resistance for the lines ex- ceeded 10 mg ohm/kn, Properly shunted self-leveling mirror gal- vanometers operated in the regime of eritical damping. Periodic measurementa of the ground resistance of the electrodes showed a constant 170 ohm during all observations, Oselllograph recordings Approved For Release 2001/03/26 : CIA-RDP96-00787R000500130080-7 - oO7 _
were made at rates of 4, 10, 20, and 90 em/hr. Simultaneous re- .  gordd made 7 > 2S AS RC eect “Selluri¢ station operated In Zuy. #2. elluri¢ station operated in Zuy. Two types of short period oscillations, differing from each other by the nature of their oscillatory regime, dre distinguished. Type 1, once begun, continue for hours, while Type 2 are observed in groups or trains of from 1-10 oscillations, e 1 may be further divided into 3 forms as follows: 1) complex harmonic short period oscillations, the amplitude and period of which change irregularly; 2) sinusoidal short period oscillations, the amplitude of which changes Irreguiarly, but which are more stable than Form 1; the period remains almost constant for several tens of years; and 3) sinusoidal short period oscillation, the oscillatory process of which consists of separate packets, containing from 3 to 10 and more oscillations, the amplitude of which after a smooth increase to about the center of the packet gradually lessens. Analysis of elec- trograms shows that most often Form 2 oscillations are excited, and only very rarely the packet form. The difference in the nature of the flow of these oscillations is, apparentiy, connected with modi- fications in the factors causing then. The following conclusions are made from the observations: 1) Short period Type 1 and Type 2 osedillations as well as bay- Shaped disturbances of the electrotelluric field at different dapths of Lake Baykal and on land (Zuy) are, within the limits of measurement accuracy, excited simultaneously, coincide completely in their parallel march, and have a similar period. Hecause of the complete similarity (with the exception of amplitude) of all the osciliations and impulses, the oscillatory regime of the electro- telluriec field at different depths in Lake Baykal and on land has the same character. 2) The amplitudes of Type 1 and Type 2 oscil- lations and of the bay-shaped disturbances in Baykal and Zuy cor- respond to the electrical resistance of the medium of these points, 3) A slight lessening of amplitude with depth was detected in Typel and 2 oseillations. The value of the attenuation, computed from the observational materials, ia in agreement with the value of attenuation obtained from examination of the absorbing effect of Beykal's waters on the variable electrotelluric field. 4) Local electric currents, connected with the water currents in Baykal, were detected, The change in the potential of the field of these currents represents 4 Beries of uneven oscillations with a period of 2-7 sec and an amplitude of 0.1-0.8 mv/km. 5) Type 1 short period oscillations in both Zuy and Baykal are excited chiefly in the interval from 00-1200 hours, while Type 2 occur from 12-2400 hours, universal time. The greatest recurrence of bay-shaped dis- turbances occurs during nocturnal hours. Approved For Release 2001/03/26 : CIA-RDP96-00787R000500130080-7 - 28.
Approved For Release 2001/03/26 : CIA-RDP96-00787R000500130080-7 _, Somment: The results obtained by the author are interesting ° ‘insofar as they sho. ‘he character of telluric rrent oseillations as dependent upon tN® earth's rotation and the Wedium through which the current passes, Approved For Release 2001/0322@2pCIA-RDP96-00787R000500130080-7