文档介绍：Abstract
In the field of seismic exploration,data processing usually takes a lot of time,especially the migration processing link. Therefore , to reduce costs, shorten time consumption, improve work efficiency has e urgent reverse-time migration processing is a major problem . All along, the migration process is dependent on a large part of the puter , but done on a puter is more difficult, so for a long time after the reverse-time migration was born in the development of extremely slow. In recent years , along with the rapid development puter hardware and software standards , in particular the emergence of multi-core puters to calculate the speed and efficiency of seismic data has also been a good solution .
Based on the traditional one-way wave equation seismic migration theory , the use of extrapolation methods to calculate the depth , so vulnerable to changes in subsurface dip . The reverse-time migration method is based on full wave theory equations , and is no longer in accordance with the depth extrapolation , but the correlation operation on the timeline . The maximum effect is brought about using full wave equation is to make reverse-time migration is no longer subject to changes in the inclination of the media can effectively use information for a variety of full- wave field seismic imaging .But the large amount of calculation, slow speed, as well as the problems such as low frequency noise, formed the bottleneck of its development. Benefit from the development of high performance puters, these bottlenecks have also been a good solution, reverse time migration technology is also favored by Geophysical researchers.
According to the bottleneck problems in Migration, This article taken based on Open MP parallel algorithms to reverse-time migration. First a brief introduction of puting and puting concepts and advantages of Open MP. Secondly , briefly describes the Related concepts and basic principles of Migration. Then introduces monly used seismic migrati