摘要
为实时、连续地测量海水中悬浮沉积物 ,利用声学多普勒海流剖面仪(ADCP),可以在测流的同时 ,测量海洋悬浮沉积物浓度。描述了利用后散射强度 ,估计悬浮沉积物浓度的原理。在现场测试中 ,利用采水器采集水样 ,通过水样分析并结合声信号的衰减特征对ADCP的测量结果进行修正。作者还结合现场测试结果 ,对这一测量方法的精度进行了分析。现场实验表明 ,经公式校正后 ,ADCP测得的后散射强度与实测水样所获得的悬浮沉积物浓度之间有很好的相关性 ,相关系数达0.88,由此证明 ,此测量方法具有很好的实用价值和应用前景。
Besides current velocity measurements,the acoustic backscattering signal simultaneously measured by ADCP can be used for inversion of suspended sediment concentration.Therefore,achieve the goal to greatly improve the temporal and spatial resolution of the measurement can be greatly improved.The principle of estimating suspended sediment concentration from acoustic backscattering measured by ADCP was interpreted in detail and error analysis was made for the measurements in this paper.In-situ water sampling was applied to correct the measurements of suspended sediment con-centration from ADCP,and a good correlation(0.88)was shown between suspended sediment concentration and acoustic backscattering.Verification from in-situ measurements proved the application and effectiveness of the technique.
出处
《海洋科学》
CAS
CSCD
北大核心
2004年第10期20-23,共4页
Marine Sciences
基金
中国科学院重大科技合作项目(H42032602)
中国科学院海洋研究所知识创新领域前沿项目(L84032609)
中国科学院留学基金项目(2002 -2003)
