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PROCESSING OF SEISMIC DATA OF WESTERN NANHAI TROUGH AND ITS CHARACTER BOTTOM SIMULATING REFLECTOR
SONG Haibin1，2 MATSUBAYASHI Osamu2 KURAMOTO Shin'ichi2
（1.Institute of Geology and Geophysics，CAS，Beijing 100029，China；2.Geological Survey of Japan，Tsukuba 3058567，Japan）
Abstract：The data of NT62-2seismic line of western Nanhai Trough are reprocessed，and the character of the distribution of Bottom-simulating reflector（BSR）is emphasized.The appearances of BSRs oon near-offset profile，stacked profile，migration profile，migratin profile，instantaneous amplitude profile and instantaneous phase profile are compared and described.They are also distinguished in shot gathers and CMP gathers.Although there are some evidence of BSRs on near-offset profile，better images of BSRs can be obtained by stack and migration.Character of strong amplitude of BSRs can be easily seen on instantaneous amplitude profile.And they are clearly mapped on instantaneous phase profile.
Key words：Gas hydrates；Western Nanhai Trough；Bottom-simulating reflectors；Seismic data processing
