摘要
Abstract
In order to guarantee the subsea pipeline′s safety ,the subsea pipeline′s position ,buried depth , exposure or free⁃span status are important parts in subsea pipeline investigation. Pipeline detector is an effective equipment to solve this problem. For the area where new trench or trench that is not backfilled well exists ,multi parabolic curves are produced on sub⁃bottom profiler image for a single pipeline ,which makes it difficult for further interpretation ,such as distinguishment of pipeline top ,pipeline position and pipeline′s buried depth and its rela⁃tive status with seabed. In this paper ,the subsea pipe installation and working mechanism of sub⁃bottom profiler were analyzed ,and the cause of multi⁃curve state was investigated. A new method to distinguish trench bottom and pipeline top on sub⁃bottom profiler image was also proposed to improve the accuracy in sub⁃bottom profiler data pro⁃cessing.关键词
管沟/管线仪/剖面图像Key words
pipeline trench/sub-bottom profiler/sub-bottom profiler image分类
天文与地球科学
