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Fault analysis in the very shallow seismic reflection method. Part 3. Migration; Gokusenso hanshaho ni okeru danso kaiseki. 3. Migration

Abstract

Concerning the analysis of data obtained by the seismic reflection method, migration in the very shallow layer is discussed. When the dip angle of the reflection plane involved is disclosed by DMO conversion, the amount of migration (travelling sideways) can be calculated by use of simple geometrical formulas though on the presumption that the sector velocity is constant. Categorized into this technique are such methods as DMO conversion migration, direct dip migration, F-K method, and finite difference method. This means that waveforms are not damaged by migration processing although elongation occurs due to time base conversion. When it is taken into account that waveform distortion is generally grave in the migration related methods widely in use, this feature has to be said valuable in holding information on faults. This is especially advantageous in the very shallow layer because the amount of migration is proportionally larger when the level is deeper and, in addition, migration processing is useful when it is necessary to know more accurately the character of the fault plane. 8 figs.
Authors:
Nagumo, S; Muraoka, S; Takahashi, T [1] 
  1. OYO Corp., Tokyo (Japan)
Publication Date:
Oct 22, 1997
Product Type:
Conference
Report Number:
ETDE/JP-98751022; CONF-9710214-
Reference Number:
SCA: 440700; 580000; PA: JP-97:0G4547; EDB-98:075716; SN: 98001944483
Resource Relation:
Conference: 97. SEGJ conference, Butsuri tansa gakkai dai 97 kai (1997 nendo shuki) gakujutsu koenkai, Sapporo (Japan), 22-24 Oct 1997; Other Information: PBD: 22 Oct 1997; Related Information: Is Part Of Proceeding of the 97th (Fall, Fiscal 1997) SEGJ Conference; PB: 371 p.; Butsuri tansa gakkai dai 97 kai (1997 nendo shuki) gakujutsu koenkai koen ronbunshu
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; 58 GEOSCIENCES; SEISMIC SURVEYS; REFLECTION; DATA PROCESSING; ACCURACY; SUBSURFACE STRUCTURES; INCLINATION; CALCULATION METHODS; FINITE ELEMENT METHOD; WAVE FORMS; GEOLOGIC FAULTS; DEPTH
OSTI ID:
622715
Research Organizations:
Society of Exploration Geophysicists of Japan, Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE98751022; TRN: JN97G4547
Availability:
Available from Society of Exploration Geophysicists of Japan, 2-18, Nakamagome 2-chome, Ota-ku, Tokyo, (Japan); OSTI as DE98751022
Submitting Site:
NEDO
Size:
pp. 161-164
Announcement Date:

Citation Formats

Nagumo, S, Muraoka, S, and Takahashi, T. Fault analysis in the very shallow seismic reflection method. Part 3. Migration; Gokusenso hanshaho ni okeru danso kaiseki. 3. Migration. Japan: N. p., 1997. Web.
Nagumo, S, Muraoka, S, & Takahashi, T. Fault analysis in the very shallow seismic reflection method. Part 3. Migration; Gokusenso hanshaho ni okeru danso kaiseki. 3. Migration. Japan.
Nagumo, S, Muraoka, S, and Takahashi, T. 1997. "Fault analysis in the very shallow seismic reflection method. Part 3. Migration; Gokusenso hanshaho ni okeru danso kaiseki. 3. Migration." Japan.
@misc{etde_622715,
title = {Fault analysis in the very shallow seismic reflection method. Part 3. Migration; Gokusenso hanshaho ni okeru danso kaiseki. 3. Migration}
author = {Nagumo, S, Muraoka, S, and Takahashi, T}
abstractNote = {Concerning the analysis of data obtained by the seismic reflection method, migration in the very shallow layer is discussed. When the dip angle of the reflection plane involved is disclosed by DMO conversion, the amount of migration (travelling sideways) can be calculated by use of simple geometrical formulas though on the presumption that the sector velocity is constant. Categorized into this technique are such methods as DMO conversion migration, direct dip migration, F-K method, and finite difference method. This means that waveforms are not damaged by migration processing although elongation occurs due to time base conversion. When it is taken into account that waveform distortion is generally grave in the migration related methods widely in use, this feature has to be said valuable in holding information on faults. This is especially advantageous in the very shallow layer because the amount of migration is proportionally larger when the level is deeper and, in addition, migration processing is useful when it is necessary to know more accurately the character of the fault plane. 8 figs.}
place = {Japan}
year = {1997}
month = {Oct}
}