SCIENTIFIC ABSTRACT GURVICH, I.I. - GURVICH, L.G.

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• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000617510020-9
• Release Decision: RIF
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• Document Creation Date: November 2, 2016
• Document Release Date: August 10, 2001
• Sequence Number: 20
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

- GURVICH,___I.-I,.--
Effective velccity in the methcd of refracted waves. Trudy MSIRI
36:78-86 159. (MJRA 15-5)
(Seismic prospecting)

3(4. 6) P022 I BOOK &IMITATION SCYW/2256
Weessrumnly asuohno-Issledovatel'skly instItut Seefillahbak1kh
astodev rasvedkl
PrIkladmaya goofizlkal abornik Stater, vyp. 22 (Applied Geophysical
Collection of Articles, Nr 22) Moscow, Oostopte"Isdat, 1959.
217 P. 3,000 copies printed.
&d.1 N.C. Falshkovi Xz9a. Xd.S M.N. Kwolainal Tech. Zd.i A.3. Polosina.
PMF=s Thin collection of articles is intended for geophysicists In
bath Ind-triml and research organizations.
COVINAGIs TW book contains articles on imp-oved methods for Inter-
Patine; "isaid-4Xplorstion data obtained by means of reflected and
retreated save@. A number of articles deal with the evaluation or
gravity anomalies. Individual articles discuss a method of dividing
a gravitational field Into Its components by "One of a computer,
feames radiation in barsholeso density or rocks of the Precamorian
In the "Stern part of the Russian natrors, and the use
of templates In sioro-lo Ing. There are 7k figures and 35 tables.
Tbw are 95 references1% Soviet and 6 Inglish.
VABXX OF CONTLIff3i
D.B. Seismic Zxplorstlon of the Resonant In the
Plains -- Or the Tobollsk Region of the West Siberian 3
NoDalkev. Tu.T. Building Up the Directional Characteristic@
Pattern Grouping lor recelveral In Seismic
Ressersh 25
IV-Sh Noica The statistical 9froot or
h7n
&A9 a nesearah 53
"apkin 9 P., &J14 Interpretation of Magnetic
No 6rai ty An 46-M-MG. by r4a=-rarallel Bodies and
Contacts 63
laushIn I G., and Yu.X. Nlkol6skir Dividing a Gravitational
7-265 HS Regl6nal and Loa I components by me&" of a 86
" 11" Fash :nlngfor Con tLng the Second
I
P PU
Qravltation rot ntia From a Map of Gravity
100
A.D. delairtionov, and_AA2_-d=2Z. Geological
structure of-OW-EFTF-UTIF-47079 Priurallys =9
Pedeba-I V. Results of Studying the Density of the FMORabrUn
lboomnt Rooks of the Zaattrn Part of the Russian Platform and
arforts of Correlating Suah Studies With "ophysleal Findings 151
.Pvl8k,qA To. Distribution of Thermal Neutrons In the
Caja
7 ffies 18T
us
7111016huls, V.I. template@ for Klare-Logging 202
AV&XLA=i Library of Cor4ress MK/ad
6-31-59

FUZYREV, Nikolay Nikitovich; GURVICH, I.I., red.; KUPALOV-Y-AROPOLK,
I.K., red.; KUZ'MINA,-Ii~,iN~i'vi9d-do~hdhiy red.; POLOSINA, A.S.,
tekhn.red. %J-,
Interpretation of data in seismic refraction surveying]
k
uterpretataiia danny1ch seismorazvedki metodom otrazhennykh
voln. Hopkva, Gos.nauchno-tekhn.izd-vo neft. i gorno-topliv-
noi lit-ry, 1959. 451 p. (MIRA 13:1)
(Prospecting--Geophysical methods)
08ismic waves)

PHASE I BOOK EXPLOITATION SOV/5508
Gurvich, Illya Isidorovich
Seysmicheskaya razvedka (Seismic Prospecting) Moscow, Gostoptekhizdat,
1960. 504 p. Errata slip inserted. 5,150 copies printed.
Reviewer: L. A. Ryabinkin, Candidate of Technical Sciences, Docent;
Ed. : Ryabinkin, Lev Aleksandrovich; Scientific Ed. : N. N. Kuzlmina;
Tech. Ed.: E. A. Mukhina.
PURPOSE: This textbook has been approved by the Ministry of Higher and
Secondary Special Education of the USSR for use by students of geophysics
in geological prospecting, mining, and petroleum institutes. It may also
be used by geologists and geophysicists working in seismic prospecting.
COVERAGE: The textbook presents the physical and geological principles

Seismic Prospecting
SOV/5508
of seismic prospecting, and examines the basic problems of the theory
of time-distance curves of reflected, refracted, and other waves. The
theory of the main apparatus contained in a recording channel is re-
viewed and modern seismic instruments briefly described. Methods of
interpreting seismic observations and basic methods and techniques of
field operations are discussed. There is a brief review of the conditions
under which seismic prospecting is carried out in certain regions of the
Soviet Union. The authors thank L. A. Ryabinkin. There are 327 refer-
ences: 278 Soviet (including 6 translations), 46 English, 2 French, and
1 German.
TABLE OF CONTENTS:
Foreword
Card- 21-29

GILIBERSHTFnl, P.G.; GURVIM, I.I.
Using perforated materials for two-dimensional seismic modeling.
Izv.vys.ucheb.zav.; geol.i razv. 3 no,1:139-1,56 Ja '60.
(MIRA 13-7)
1. Moskovskiy geologorazvedoctinyy institut iM.S.Qri2honikidze i
Treat "Geofiznefteuglerazvodka".
(000106104k1 Mkx1*11N;) (Soltkn%le %.tavon)

AUTHOR: Gurvich, I. 1.
3/552/60/000/028/004/006
HOOO/HOOO
TITLE: Methods of computing and evaluating correlation systems for
seismic prospecting observations
SOURCE: Prikladnaya geofizika (abornik statey)o no. 28, 196o, 50-69
TEXT: The mainproblems discussed in this article are: 1) clasni-
fication of correlation systems; 2) relations needed for establishing
complete correlation systems for continuous tracking of the wave in
a given area; and 3) methods of estimating economic feasibiliy of the
observation systems. The results obtained apply mainly to the
selection and evaluation of correlation systems for use with the re-
fracted waves method. The article describes computation methods per-
mitting the design of various types of correlation systems to satisfy
preformulated requirements, and strongly suggests the possibility that
systems using inonsuperposecL shot points, though rarely used at presentl
may prove to be economically and operationally quite advantageous.
There are 9 figures.
Card 1/1

GURVICH~ I.r.
Using seismic methods in petroleum prospecting in China. Trudy MGRI
38:14&-154 160. (KMA 14:5)
(China-Seimaic prospecting)

GURVICH, I.I.
Theory of the grouping of explosivns In seismic, prospecting.
Frikl. geofiz. no.29:20-38 161. (KmA 14:6)
(Seismic prospecting)

GURVIU. 1.11
Subscreen reflections of waves in seismic prospecting. Izv. vys.
uchob. 2av.; geol. I row. 4 no.1:100-U6 Ju 161. (IIADU 14:7)
1. Moskovskiy geologorazvedochnyy institut imeni S. Ordzhonikidze.
(Seismic prospecting)

GURVICH, I.I.; GILIBFMHTE*, F.G.
I
Determination of the absorption constants of seismic waves. Geofjlz.
roved. no.4:3-14 161.0 (KRA 14:7)
1 (Seismic prospecting)

GILIBERSHTEYN, P.G.; GURVICH, I.I.
Normal reflection of lateral waves in perforated materials for
seismic modeling. Geofiz. razved. no.9:3-7 162. (KRA 15:9)
(Seismic prospecting-Models)

GURVICH. I.I.; CHZHAO BIN Lchao Fing]
Relationship between the amplitude of seisaic vibrations and the
weight of the charge. Razved.i prom.geofiz. no.4,,4:12-18 162.
("-OA 15;7)
(Seismic prospecting) (Explosions)

GILIBERSHTEYN, P,G.; GURVIGH, I.I.
Velocity of elastic waves in the materials with holes for seismic
modeling. Izv.vys.ucheb.zav.; geol. i razv. 5 no-5:116-131 My 162.
(MIRA 15:6)
1. Trest Geofiznefteuglerazvedka i Moskovskiy geologorazvedochnyy
institut imeni. S. Ordzhonikidze.
(Seismic waves)

ZNAMENSKIY, V.V.; RYABINKIN, L,,A.; FETROV, L,V,; VAitTAINOV,
GAGELIGOTS, A.A.;XOTl,YAl&'VSKIY, B.V.; LOZOVS,',.AYA, I.J.;
LYAKHOVITSKIY, F.M., MARIIN, N.I.; OSTROVSKIY, V-,D,; PAPIY,;KAYA,
G.N.; RIKHTER, V.I.; RUBO, V.V.; SLUTSKOVSKIY, A.I,; TARLUS,
G.M.; TURCHANENKO, N,M.; SIP-IIDT, N.G.; SHN-EYE160N, M.B.; qUIRV~PH,_,
red.; BORUSHKO, T.I., red.izd-va; GUWVA, O.A., tekhn. red.
[Instructions for seismic prospectingjlnstnikt~siia po seisnoraz-
vedke. Mbskva, Gosgeoltekliizdat, 1962. 95 p~ (MIRA 15:12)
1. Russia (1923- U.S.S,R,')Ydnisterstvo geologl,- i. okhrany nedr.
(Seismic prospecting)

S/169/63/0013/002/097/127.
D263/D307
..AUTHORS: Gilibershteyn, P. G. and Gurvich, 1. 1.
TITLE; The velocities of elastic waves in perforated materi..
als for seismic modeling
PERIODICAL: Referativnyy zhurnal, Geofizika, no. 2t 1963, 20 ab-
stract 2D122 (Izv. vysah. uchebn. zavedeniy. Geol. i
razvedka, 1962, no. 5, 116-131)
TEXT; A description is'given of-experiments aimed at a stadyiof
the velocities of elastic waves in duralumin, plexiglass and bra'sat
used for seismic altrasound.madeling. The.main-resul.te of the in..
vesligation are as follows.: The velocity of longitudinal waves v
p
in perforated sheets varies-linearly with the number of holes, Q
and may be calculated from a quoted empirioalformula. The latter
must include a parameter lp,..determined.,experimeatal-ly for the ma-
terials tested. The dependence of transverse wave volocities.v on
Card 1/3

S/169 '63/000/002/097/127
The velocities of ... D263 D307
the extent of perforation is also linear in certain range of Qqs;
this is less clearly pronounced.than for- longitudinal waves.~Calcu-
lation of the velocity V should be carried out with the aid of ex-
perimentally obtained graphs. The velocity ratio v p/IV$ in the~per-
forated materials studied is found to vary from 1.77.to 1.60.;In
duralumin V P/V a is a linearly decreasing function of Q. In plexi-
glass, the decreasing character of the relation of V /V with
p
appears from Q> 0.2. Perforated elates submerged in water are cha-
racterized by higher velocities than plates.surrounded by air. The
Dependence V P(Q) determined for.thia case aemoneitrateu the poesi-
bility of applying perforated plates for simulating thin layers
wi--h directional elastic properties in the solution of three-dimen-
sional problems. Anisotropy of v is clearly shown in materials
p
with a square-grid of apertures, and increases with increasing
number of holes. A def in ite value of Q exists below which the aniso-
-tropy is practically not observed. kpplication of many types of
--card. 2/3

S/16 63/000/002/097/127
The velocities of ... D263YD307
grids allows simulation of either isotropic or anisotropic media.
It was not possible to find dispersion of the velocity V between
p
30 and 115 kc/s in plexiglass and between 25 and 250 kc/s in dur-
alumin. The authors observed a non-parallelism OT phaae hodographa,
~caused by selective absorption of high frequencies, aii a result of.
which the apparant velocity of later phases appear somewhat lower
(by 2 - 3%S). The velocity of-surface-waves depends on,Q. This rela-
tionship is shown less distinctly than for longitudinal waves. jb-
.stracter's note: Complete tranalation._7
Card 3/3
- - - -- - - - - - - - - - -

MUCH., I.I.; GLOGOVSKIY, V.M.
Calculation of statle dorrections to obsorvation hodographs of
reflected waves. Geofts. razyed. no.3-193-15 163. tKMA 16t8)
(Seismic prospecting)

GURVICH,_IlItl MOROZENKO, Yu.P.
Theory of the converters of seismic recording@ 17,v. vys. ucheb.
zav.; geol. i razv. 6 no-4:128-136 Ap 163. (MIRA 16:6)
1. Moskovskiy geologorazvedochnyy institut im. S. Ordzbonikidze.
(So i smome try)

GURVICH, Illya Isidorovich; RYABINKBi, L.A. , red.
[Seismic prospecting] Seismorazvedka. lzd.2., i dop.
Moskvap Nedraj 1964. 439 p. (MIRA 17i11)

GUHVEC~H, !J. 11~(;.
'tnrfyin~, waven reflected from tanipr a strata with
incroased wave-propagation velocity using two-dimensional
models. Geofiz. razv. nc. 15:3-19 164. (MIRA 17.7)

GURVFICIi, 1. 1.
Methods for detelmining the parameters of the spherical
center of longitudinal seismic waves. Izv.vys.ucheb.zav.;
geol. i razv. 8 no.10:116-124 0 165.
(Y7RA
19:1)
1. Moskovskiy geologorazvedochnyy institut imeni
Ordzhonikidze.

L 25547-66 Q'1T(1)/EV1A(h) GW
ACC NR- AP6005835 SOURCE CODE: UR/0387/6S/000/010/0045/00 Sj~o'
AUTHOR: Gurvich, I. I.
ORG: Moscow Geological Prospe ctin g Institute imeni S. Ordzhonikidze (Moskovski geo-
1C. rrazvedoci-inyy institut)
TITLE: Theoretical basis for a spherical radiator of seismic waves
SOURCE: AN SS.SR. Izvestiya. rizika Zemli, no. 10, 1965, 45-516
TOPIC TAGS: - seismic wave, wave mechanics,, fm - q - - .axis*"
ABSTRACT: A frequency theory is proposed for a spherical radiator of seismic waves
located in an infinite absolutely elastic isotropic medium, assuming that the Lamd's
constants X, jj and density p are given. The radiator is a spherical cavity with cen-
ter at point of origin acted upon by a.radially external pressure 1)(0, where t is
time. It is shown that this radiator has the proportion of a resonance filter which
convopto tho complom apootrw 8.(W) of tho fullotioll P(0 to 0111 ap4wiluft 87 (60' of
P U
soil displacement u(t) recorded far from the source. The natural frequency of the ra-
diator is dependent only on its radius and the velocity of transverse waves. Rela-
tive attenuation is determined by the ratio between the velociflen oF transverne and
longitudinal waves. The input-output curve of the radiator, which gives the tunpli-
(JDCt 534.1:550.B34

L 25547-66
ACC NRt AP6005835.
tude of harmonic components of soil displacement as a -function of the weight Q of tile
charge, may have a complex form at low velocity ratios. The amplitude of soil dLt-
placement increases as Q for light charges and as the cube root of Q for heavy charg-
es. There may be a reduction in the amplitude with an increase In -the weight of the
charge for certain ranges of variations in velocity ratios and charge weigHts. The
maximum in the input-output curve of the radiator with charge increase shows a shift
toward the low frequency range which is.proportional to the cube root of Q while the
level of the frequency response increases as the cube root of Q2. The frequency re-
sponse of the radiator approaches a'resonance form as the velocity ratio 118/VP de-
creases. At the same time, the maximum of the frequency response shifts toward low-
er frequencies. The radiator acts as-an in.teg'rator when VON = 0. A transient of
the radiator has the form of a damped sine curve with parameters which depend on the
radius of the radiator and the properties of the ambient medium. The authors are
grateful to students K. F. Vrubell and A. Pa, Z for assistance with the calcula-
tions. Orig. art. has: 6 figures, 40 formulas.
SUB CODE: 08,10/
SUBM DATE: 1OApr65/
ORIG REF: 008/ OTH IM." 0107
2/2 L) "

ACC NRI AP6010063 SOURrE CODE . UR/030 7/66/000/003/00,13/004 3
AUTHOR: Gurvich, L 1. (Doctor of technical sciences); Molotova, L. V.; 4. B.
Levyant,
ORG: Moscow_Geological-Mining Institute imeni S. Ordzhonikidze (Moskovskiy ge0106UL-04-1
vedochniy institut); Nizhnevolzhs~j__YLS~L"Lc~ oL~~Iq&y nd Geoplivalca . Ac~tqpy. of
(N.irjij
wvolvhakly hitilitut gijologAt
J.IwLILIIL~ Of EtA1.01 1111101cri, Aoqkgx_iiC~'LQ.WLu
_vjj,TJ_01L (Itintitot tlzlkl Zemll AkAdemlyn
TITLE: Experimental mplitude clukracteriatice of oxplosions
SOURCE: All SSSR. Izvestiya. Fizika Zemli, no. 3, 1966, 33-113
!TOPIC TAGS: longitudinal wave, explosive charge, sound wave, seismic wave-
1ABSTRACT: A',comparison was made between experimental and theoretical amplitude charac-
!teristics of explosion nuclei in sand-clay deposits. The theoretical analysis was bas-
!ed on the theory of spherical emission of longitudinal waves. Seismological sections
!of underground layers down to 60 m are shown, giving the relative velocities of pres- 11
!sure waves (v ) and sound waves (v as a function of the respective layer compositions
P
!(sand, clay, soil or sandstone) and the positioning of ths explosion nucleus below the
earth. Model spectra of seismic wave reflections are shown with the corresponding am-
iplitude spectra (amplitude as a function of frequency--fron 0 to 60 cps), for charges
UDC: 550.834
1/2

ACC NR- AP6010063
we.ighing from 0.1 to 6.5 kg. Characteristic parameters for conditions in the vicinityi
of the charge nuclei are tabulated for the different seismic sections with charge
depths to 35 m and charge weights to 500 kg. These parameters were: the ratio
(V /V V /kit = g where k is the radial coefficient of the nucleus of the explosion
0 P a a
obtained from the formula
R=kQ,13
where R is the radiuu and Q in the weight of charge. The frequency coefficient of the
nucleus g was about 40 sec Ikg1/3 for damp sand-clay deposits. The values for (v8/Vp)a
ranged from 0.3 to 0.7, as deter-mined from the amplitude curves. These were systema-
tically higher than (va1vP 6which were determined directly from seismic explosions.
Both theoretical and experimental values of K agreed closely and ranged from 1.4 to
3.8 m-kg 1/2. Orig..art. has: 7 figures, 2 tables, 7 formulas.
~
SUB CODE: 08/ SUBM DATE: O1Jun65/ ORIG REF! 010/ OTE REF: 001
2/2

_L j' EAP~m"L_
A~C NR, AP6013161 SOURCE CODE: UR/0387/66/000/004/0015/0024
ALITHOR- Gmrvich, I. I. (Doctor of technical sciences) 61;
!ORG: Hloscow Geological Survey Institute im. S. Ordzhonikidze (Moskovskiy geolog-o-
razvedochnyy instli_tuR7
!TITLE: Excitation function of an explosive spherical radiatcr
SOURCE. -AN SSSR. Izvestiya. Fizika Zemli, no. 4, 1966, 15-24
TOPIC TAGS: shock wave, seismic wave
1AMSTRACT: E*xcitation functions expressed in pressurt--s over the surf ace of an, equl~ra-
I
ilent spherical radiator were investigated on the basis of experiments conducted by
!McDonal, et al. (1958). The solutions based on three different assirptions were eva-
luated and compared with the experimental data. The assumptions ma,2e were that 1) the
:duration of the explosive action applied to the surface of an equivalent raliator -L
~,small in comparison to its period of natural vibration; 2) the explosi-ve e_`rfect %'73)
japplied to the radiator surface is nearly constant during the time equal t~ its pe-liO6
!of natural vibrations; and 3) the magnitude of explosive effect decreases c on side rah-l'-'
Iduring the time of the same order of magnitude as To. The investigation shows that 1)
Ithere is a certain correspondence between the reduced spectra based on -he 1`1'0-'juei1Cy
I
itheory of a spherical radiator located in the absorbing medium. and the reducc-d spectr ?
UDC: 534.111:550.034
2

ACC NR: AP6013161
iof a direct longitudinal wave excited by the explosion, in clzv s~lia.-Lps 2) th4e
son of t6he coiputed and observed spec-tra Of dirqct Wavea ~pr'rr t!~ !+'p fi~'- ~4-?t lo-Ii, 70--n of
:the sourco and modium-, 3) the fi%ititioncy ocmc-imit (g) -4 oi, is t-qwa to
260 sac and ita raditm comf Ftele-ist in 0.90 m k' "/j for tho Imploutolld iYA Cam-
pact ClAy olwibm" mid 10 tho limpitudo of Itiftlal (11tr4placemont m the equivalent ;ur-
Iface of a radiator is 0.4 an. Orig. art. has: 6 figures, 214 fomulas.
SUB CODE: 08/ SUBM DATE: 05Jul65/ ORIG REF: 007/ OTH REF: 004
2/2 -ZC-

L 34986-66 EWTM
SOP. C-E- - -C- 0--b -S--; -Wj6j8 9~166106616651004~lff
ACC NRt AIM26257
AUVOR: Gurvich, I. I* (Doctor of technical sciences) r].
07RG: 'Noscow Geological Pros~2cting Institute im. S. Ordzhonikidze (Moskovskiy
geologorazvedochnyy institut)
TITLE: Spectra_of_wAs from a spherical sourco in a homogeneous absorbing modium
SOMU;: AH SSSR. Izvestiya. Fizika zerili, no- 5, 1966. 43-51
TOPIC TAGS: absorption spectr=, spectrum analysis
ABSI-INCT: On the basis of the frequency theory of a spherical source the
'author has computed the reduced amplitude spectra of a direct wave for
a homogeneous absorbing medium in which the decrement of absorption is
knot dependent on frequency. Computations of spectra are presented for
.the case when pressure is described by an impulse function. The amplitude
spectra have one maximum, corresponding to the frequency wMV whose value
is dependent an the parameters of the focus, medium and distance from the
source to the point of-observation.. All the theoretical reduced spectra
rn( w/;,o) (a function describing the reduced amplitude spectrum of the
rate of displacement il(t) of the woil) have a logarithmic 5teepness. The
form of the (-v) spectrum near its maximum is dependent on the values of
the ratio vs/vp and the parameter 6 . The results presented make it
Card UDQ2 5-i4-1k--4KQ-A-jh-

-~Iji~11;1.1111-1-.- --
-.. 91A leve
L 34986-66
ACC NR- Al
1possible to use these spectra for comparison with the spectra of direct
and secondary waves in the case of homogeneous and nonhomogeneous media
.and their use fordetermination of the parameters of a shot focus and -
.medium. Orig. arts has: 6 figurer, and 15 formilas. fJPRS: 36.55f
SUB CODE: 20 / SUBM DATE: 05JU165 / ORIG FMF: 006 / OTH REFs 003
0

EWW GD/GW
A
AT6031368
SOURCE CODE: UR/0000/66/000/000/0034/oo4i
'AUTHOR: Vasil'yev, Yu. F.; Gillbershteyn, P. G.; Gurvich, I. I.; Ivakin, B. X.
10RG: none
iTITLE: Perforated materials for two-dimensional seismic modeling
T
SOURCE: AIN SSSR. Institut fiziki Zemli. Geoakustika; ispollzovaniye zvuka i ul'tra-
zvuka v seysmologii, seysmorazvedke i gornom dele (Geoacoustics; the use of sound
and ultrasound in seismology, seismic prospecting, and mining). Moscow, Izd-vo Nauka,
1966, 34-41
TOPIC TAGS: seismic modeling, perforated material, seismic wave ma4ZI. elastic
wave
prep&g04"n. Uo-r~
ABSTRACT: A description is given of the use of perforated materials for controlling
density and elasticity in ultrasonic seismic-wave modeling experiments conducted in
~ e Institute of Physics of the Earth of the Academy of Sciences USSR and the
th
Geological Prospecting Institute. Parametric measurements were made on two-dimensi8na~
sheets of audralum, brass, iron, and plexiglass containing perforations (d = 1-10 mm)
arranged in triangular, hexagonal, and rectangular grids. The ratio of the dominant
wavelength to the diAtance (which ranged from 2.5 to 20 mm) between the perforations
varied from 4 to 50 depending upon the type of sheet and the nature of the experiment.
Experiments were conducted to establish: 1) the possibility of recording regular
Card

L_ 471184~6_ -
ACC NR: AT6031368
longitudinal and shear waves, 2) the relationship between the effective elastlcr,~Mve
propagation velocities and the size, number, and shape of the perforations, 3) the
dispersion velocities, 4) the absorption of the elastic-wave enera , and 5) the
possible appearance of velocity anisotropy and absorption in sheets with different
perforation patterns. The results of experiments showed that under certain conditions
regular longitudinal, shear, and surface waves arise in perforated materials and
propagate vith characteristic velocities almost without dispersion or attenuation as
determined by the coefficient of effective absorption. Thus, perforated materials
under specific conditions behave like a macrohomogeneous, nonideal, elastic medium to'
which can be imparted isotropic, anisotropic, or smoothly changing properties. The
applicability of these materials in seismic modeling is determined by the appropriate-
ness of the elastic, density, and absorbing properties of the rock to the analogous
parameters, which can be controlled in perforated sheets by changing the perforation
pattern. The accuracy of reproducing properties in these models is very high,
reaching 1-2% in the case of velocity. Orig. art. has: 14 figures. [DM]
SUB CODE: o8/ SUBM DATE: -28Mar66/ ORIG REF; 007/ ATD PRESS: 5088
Card

ACC NR, AP6036357
AUTHOR: Gurvich, I. I.
SOURCE CODE: UR/0387/661000/011/0036/6044
ORG: Moscow Geologic Pros ecting Institute im. ~. Ordyh9njh;LdXe_(,1oskovskiy
geoloF6-razvedochnyy institut)
TITLEi Use I experimental data to determine the spectrum of the seismic pulse of
. af-
an explosion near the focus
SOURCE: AN SSSR. Izvestiya. Fizika Zemli, no. 11, 1966, 36-44
TOPIC TAGS: AA~' -x/- explosion, seismic wave)_P---?=;=;:~=0
ABSTRACT: The application of the trequency theory of explo:iton gelleration developed
by 1. 1. Gurvich (Izv. AN SSSR. Fizika Zemli, no. 10, 1965; Izv. VUZ'ov. Ge6logiy'a i
razvedka, no. 10, 1965) to determine the spectral composition of an undistorted
seismic signal on the basic of analysis of seismic records obtained at great dis-
tances from the focus is examined. The spectrum Sy , of an undistorted explosion-
generated signal Y(t), observed in a nonhomogeneous medium far from the source, can,
according to the principles of similarity, be computed from the amplitude curve
expressing the dependence of the spectral components of the observed signal on the
weight Q of the charge. The form of the equations used to compute the spect rum 0'
the undistorted signal depends on the magnitude of the physical value Y(t), for which
the spectrum is being sought. The frequency interval (n,, Rn) in which spectrum
Card 1/2 UDC: 534.14:550.834

I-4CC -NR-. ---AP6036357'-
Syi can be found is determWed both by the frequency band (wit IX)n) of the recording
apparatus and the medium between the focus and the observation point as well as by
the range of change of the relative weight q = (Q/QI)1/3 of the charges used in the
experiments. The frequency interval (fl,' f1d can be substantially broadened by using
charges corresponding to a rather broad range of q values. The computed spectrum
Syit may differ somewhat from the actual spectrum owing to the failure to take into
account distortions arising in the immediate proximity of the focus when the size
of the emitter and, consequently, the weight of the charge are changed. In this
event the high-frequency components of the computed spectrum would be higher than
the actual values. Orig. art. has: 29 formulas and 3 figures.
SUB CODE: 08/ SUBM DATE: 29Jan66/ ORIG REF: 009/ OTH REF. 001/
ATD PRESS: 51o6
2/2

ACC KR:
AUTHOR.
iW7001909 S,0-Ul~Ct-~6DE-.--Ul~/038'7-/66/000/012/0011/0027
Gil'ber"'shteyn, P. G.; Gurvich, 1. 1.; Pochtovik, V. S.
ORG: Moscow Geological Prospecting Institute im., 3. Ordzhonikid L ( kovakiy geologo-,
razvedochnyy institut); Geofiznefteuglerazvedka Trust (Treat Geofiznefteu,,Ierazvcdka),
TITLE: Iviodel investigations of a'two-dimensional. seismic waveguide with uharp
boundaries
SOURCE: AIN SSSR. Izvestiya. Fizika Zemli, no. 12, 1966, 11-27
:!--,TO?IC TAGS: seismic modeling, interference wave, ultrasonic seismoscope, seismologic
-.'ins trument
ABSTRACT: 11"wo-dimensional seismic waveguide model investigations were conducted in
which the kinematic and amplitude characteristics of interference waves
were examined in relation to the thickness of the layer- Duralum models
(1000 x 500 x 2 mm) were used. A perforated band with a triangular net-j
work of apertures served as the waveguide layer. Rochelle salt cryst .als
-x' 6*'mm)' acted as receivers, while an ultrasonic seismoscope re-
corded both narrow (60 kc) and broad (600 kc) bands. The efiecc of
changing the location of the source relative to the layer on the ampli-
tude of the interference waves both within the layer and in the surroundi:rZi-
medium was studied. In the case of a solid low-velocity layer a very
Card 1/2 534.21:550.311

ACC NR.- AP7001909
intense interference*.. was observed when the source was inside-the
layer. When the source was outside the layer, a surface wave was gen-
craced whose ainp~itude diminished rapidly with distance from the layer
boundary.. Orig. 12 figures and .2 formuIlas.
__Art,. has:_,
SUB CODE: 08/ SUBM DATE: 22Mar661 ORIG REP: 012/ OTH REP: 007
ATD PRESS; 5111

SOURCE CODE: UR/0387/671000/001/0076/0085
AUTHOR: Gurvich, I. I.
ORG: Moscow Geological Prospecting Institute im. S. Ordzhonikidze (Mookovskiy
geologorazvedochnyy institut)
TITLE: Dependence of spectra of seismic waves in an absorbing medium on the weight
of the charge
SOURCE: AN SSSR. Izvestiya. Fizika Zemli, no. 1, 1967, 76-85
TOPIC TAGS: seismic wave propagation, �atcbrdx= geologic exploration, earth
crust) Sjlee 7A'00) 10)0L (f -S t ') WOVe-
Abstract: By investigating the spectral characteristics of longitudinal waves
generated by a spherical emitter in a homogeneous absolutely elastic or absorbing
medium, the author has shown that borehole shooting can be modeled by such an emitter
(Izv. AN SSSR. Fizika zemli, no. 10, 1965; Ibid., no. 5, 1966; Ibid., no. 2, 1966;
Ibid., no. 4, 1966). on the basis of this research, the spectral characteristics
of direct waves generated in a detonation of different size charges and recorded at
a point in the medium quite distant from the source are examined. Families of ampli-
tude spectra of the displacement rate as a function of the relative weight q of the
charge are first computed in order to establish an arbitrary arrangement of source
and receiver in an infinite absorbing medium. Each of the families corresponds to a
definite form of the excitation function p(t) and the velocity ratio m near the
:ard 1/2 UDC; 550.834

__ - AP7006220
source. Each family of spectra break down into two subgroups corresponding to super-;
critical (q3 >> 1) and subcritical (q3 > I a definite depend-
ence of the maximal frequency (fmax) of the spectrum on the weight of the charge is
observed; at q3