AZFP：水中油声学检测
Abstract
Capabilities for detecting oil in the water column have relied most heavily on acoustic and, to a much lesser extent, optical technologies, with the latter, generally, being less favoured due to turbidity-imposed limitations on measurement ranges. Research has been dominated by planned and opportunity-driven field programs, which have tested promising alternative off-the shelf instruments on real or simulated oil and gas plumes. ASL’s own work using our proprietary acoustic technology on near-simultaneous, co-located backscattering measurements carried out on suspended water column targets using four different acoustic frequencies between 125-774 kHz demonstrated that detailed characterizations of suspended particle size distributions could be extracted for suspensions characterized by wide ranges of particle size and particles/volume.
We present preliminary results from tests we carried in July 2018 with ASL’s multi-frequency upward looking sonar (Figure 1) at the Bureau of Safety and Environmental Enforcement’s OHMSETT Oil Spill Response Research and Renewable Energy Facility outdoor wave tank (Figure 2) using HOOPS crude oil dispersed in saltwater in collaboration with the US Naval Research Laboratory (NRL) and the US Environmental Protection Agency (EPA).
摘要：
水中油检测能力主要依赖于声学技术，光学技术则应用较少且受限较多，因其测量范围常受浊度影响。相关研究以计划性和机遇驱动的实地项目为主，通过真实或模拟的油气羽流测试了各类商用替代仪器。ASL采用自有专利声学技术开展的实验表明：在125-774kHz四个不同声频下对悬浮水体目标进行近同时、共位后向散射测量，能够获取粒径分布特征。该技术适用于粒径跨度大、颗粒浓度高的悬浮体系，可实现颗粒粒径分布的精细表征。2018年7月，我们与美国NRL和EPA合作，在安全与环境执法局的OHMSETT溢油响应研究和可再生能源设施室外波浪罐（图2）使用分散在盐水中的HOOPS原油进行了ASL多频向上声纳（图1）的测试，并展示了初步结果。
关键词：AZFP声学浮游动物声学剖面仪，水中油声学检测，溢油检测，ASL
