摘要
在走航式海洋调查测量中通过投放XBT仪器来获取海水声速剖面,存在由于缺乏实测盐度信息导致的缺陷,其对深水海域的海水声速测量影响尤甚,并进一步影响到海洋水深测量精度。对国际WOA13模型进行了解析及适用性评估,提出了联合XBT和WOA13模型中盐度信息的深水走航声速准确确定方法。实例结果表明,该模型可有效弥补XBT无实测盐度支持及自身探测深度不足的固有缺陷。多个声剖站的全深度声速推算值与实测值间的互差仅有-0.2～0.35 m/s。
There is an inherent low precision of sound velocity by casting XBT apparatus, which will reduce the precision of sailing bathymetric survey in deep water due to the lack of practical salt. The global numerical model of WOA13 is analyzed and validated. How to improve the precision of sound velocity profile of XBT in deep water based on WOA13 is researched in this article at first. It is obvious that WOA13 model could improve the precision of sound velocity profile of XBT by providing the salt profile and it could solve the deficiency of detecting depths. Some details are analyzed. The mutual difference between the reckon profile and practicality profile is only-0.2～0.35 m/s.
出处
《海洋通报》
CAS
CSCD
北大核心
2016年第5期554-561,共8页
Marine Science Bulletin
基金
国家自然科学基金(41474012
41174062
41374018)
国家重大科学仪器设备开发专项(2011YQ12004503)
关键词
走航式水深测量
声速改正
声速剖面
温度
盐度
声速方程
sailing bathymetric survey
sound velocity correction
sound velocity profile
temperature
salinity
sound velocity equation
作者简介
黄辰虎（1979-），男，工程师，主要从事海底地形测量数据处理以及海洋潮汐、海水声速的分析及预报研究。电子邮箱：hchhch-1997@163．com。
