Abstract
Technology of marine seismic reflection survey has made remarkable progress during the last several decades, mainly with the advances of hydrocarbon exploration and electronics technology.
Developments of multi-channel digital seismic recording systems including streamer cables and bore hole receivers, and of stable long-life seismic sources such as "Water Gun", have improved the survey techniques on board, bringing many new marvelous methods such as three dimensinal survey and vertical seismic profiling.
Processing techniques of digital seismic reflection data have been improved with the advances of the computer technology and the field data acquisition techniques. Though conventional seismic processing needed a very big size of computer with array processor about twenty years ago, it is now possible to process the seismic data more quickly than before by using a small size of mini-computer, due to the progress of the computer technology. Also, increased capacity of the big computer enables us to process a large amount of seismic reflection data, so that various types of processing techniques such as three dimensional processing and wavelet processing have been developed.
Above mentioned techniques have improved the seismic reflection profiles. Then new geological interpretation methods, such as chronostratigraphic analysis of sea level changes, have become possible,
