Measurement of the spatial distribution of temperature and velocity in lakes using Acoustic Tomography.

本项目将研究在湖泊中使用声波层析成像技术，以连续测量整个湖泊的温度和速度分布。湖泊声学层析成像的挑战是在较短距离内测量旅行时间所需的准确性，由于反射引起的声学损失以及确保足够的光线穿过温跃层，湖泊中最感兴趣的区域。在深湖的试点实验将调查旅行时间测量的质量计算射线穿过温跃层的一个强烈分层的湖泊。这对湖泊和水库的水质管理具有广泛的应用。

This project will investigate the use of acoustic tomography in lakes to continuously measure the lake-wide distribution of temperature and velocity. The challenges with lake acoustic tomography are the accuracy required in the travel time measurements over shorter distances, acoustic losses due to reflections and ensuring enough rays travel through the thermocline, the region of greatest interest in lakes. A pilot experiment in a deep lake will investigate the quality of travel time measurements computed from rays travelling through the thermocline of a strongly stratified lake. This has wide applications for the water quality management of lakes and reservoirs.