Title:
OCEANIC EARTHQUAKE DATA COLLECTION METHOD AND APPARATUS
Document Type and Number:
Japanese Patent JPS57110975
Kind Code:
A
Abstract:
A method and apparatus for use in marine seismic data gathering comprises a vessel (1) is equipped for deploying and retrieving trailer cables and tows a plurality of cables (3) which are provided with at least one array of transmitters (5), which array constitutes a point source for a transmitter, and an acoustic cable, over the region to be investigated. The transmitter cables (3) are caused to become distributed laterally in relation to the tow direction, the distance between them, the firing power and firing timing being controlled from the vessel in accordance with data collected previously regarding the nature of the sea bed. The point source-formed transmitter arrays can be distributed both laterally and longitudinally in relation to the tow direction. The transmitter cables (3) are distributed laterally with the aid of otterboards (8).
Inventors:
HERUGE BURANDOSAETERU
ORAFU EIMUSUTATSUDO
ORAFU EIMUSUTATSUDO
Application Number:
JP18092581A
Publication Date:
July 10, 1982
Filing Date:
November 11, 1981
Export Citation:
Assignee:
JIOFUIJIKARU CO OBU NORUUEE AS
International Classes:
G01V1/02; G01V1/38; (IPC1-7): G01V1/38