摘要
在深远海海域开展多波束水深测量时,受海上苛刻作业条件等多种影响,获取全深度声速剖面往往比较困难。首先联合WOA2018温盐模型和多个站位CTD、XCTD实测温盐剖面资料开展了全深度声速剖面重构,进而使用三组来源不同的全深度声速剖面开展了多波束测深声速改正对比分析。从试验结果看,这几组声速剖面对多波束测深精度的影响基本一致。特别是当假定CTD站位采用XCTD设备并由此推算深度大于1099 m的温盐及声速剖面时,多波束测深的声速改正结果也能满足海底地形成果的质量要求。
It is difficult to obtain full-depth sound speed profile due to the influence of offshore operation conditions when the multibeam sounding is carried out in deep sea water.Experiments about reconstruction of the full-depth sound speed profile with world ocean atlas 2018 and in-situ temperature and salinity in sea water were carried out.Three sets of full-depth sound speed profiles with different sources are used to carry out comparative analysis of sound speed correction in multibeam sounding.According to the experimental results,the effects of these sound speed profiles on the multibeam sounding accuracy are basically the same.Especially,assuming that the CTD station adopts XCTD equipment and calculates the temperature profile,salinity profile and corresponding sound speed profile with depth greater than 1099 m,the sound speed correction results can also meet the quality requirements.
作者
黄辰虎
吴自银
姜华伟
唐少华
葛忠孝
王许
HUANG Chenhu;WU Ziyin;JIANG Huawei;TANG Shaohua;GE Zhongxiao;WANG Xu(College of Artificial Intelligence,National University of Defense Technology,Changsha 410073,China;Naval Research Academy,Tianjin 300061,China;Key Laboratory of Submarine Geosciences,Second Institute of Oceanography,Hangzhou 310012,China;91937 Troops,Zhoushan 316000,China;Traing Base of Marine Corps,Guangzhou 510431,China)
出处
《海洋测绘》
CSCD
2020年第5期9-14,共6页
Hydrographic Surveying and Charting
基金
国家自然科学基金(41974005,41876103,41804011)。
关键词
多波束测深
声速改正
声速剖面
温度剖面
盐度剖面
multibeam echo sounding
sound speed correction
sound speed profile
temperature profile
salinity profile
