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该文简单介绍了Innerspace 449 热敏式双频测深仪的功能和基本工作原理,并以实例说明Innerspace 449 热敏式双频测深仪在航道沙波研究中是一种直接快速有效的方法。利用Innerspace 449 热敏式双频测深仪和GPS( 全球定位系统) ,我们于1997 年3 月、7 月和8 月在长江口南港和南北槽主航道进行了走航观测,根据Innerspace 449 热敏式双频测深仪的记录结果,确认南港( 吴淞口以下) 上段航道在洪季正常风况下存在尺度较大的沙波群。而且,通过仪器记录分析,揭示了单个沙波和沙波群的一系列特征值,如沙波的分布、沙波几何特征、沙波指数、沙波对称性以及沙波运动与水流的关系等,为底沙运动、沙波研究和航道的开挖、维护提供了理论依据。
This paper briefly introduces the function and basic working principle of Innerspace 449 thermal double-frequency depth sounder, and gives an example to show that Innerspace 449 thermal double-frequency depth sounder is a direct and fast method in the study of channel sandwaves . Using the Innerspace 449 thermal dual-frequency depth sounder and GPS (Global Positioning System), we made a cruise in March, July and August 1997 at the South Port of the Yangtze Estuary and the main channel of the North-South Channel, according to Innerspace 449 thermal The results of the recording by the dual-frequency depth sounder confirmed that there was a large-scale sand wave cluster in the upper course of the south section (below Wusongkou) during the normal flood season. Moreover, a series of eigenvalues of single sand wave and sand wave swarm were revealed by instrumental record analysis, such as the distribution of sand wave, the characteristics of sand wave, the sand wave index, the symmetry of sand wave and the relationship between sand wave motion and water flow, It provides a theoretical basis for sediment movement, sand wave research and waterway excavation and maintenance.