AZFP：水中油聲學檢測
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：
水中油檢測能力主要依賴于聲學技術，光學技術則應用較少且受限較多，因其測量范圍常受濁度影響。相關研究以計劃性和機遇驅動的實地項目為主，通過真實或模擬的油氣羽流測試了各類商用替代儀器。ASL采用自有專利聲學技術開展的實驗表明：在125-774kHz四個不同聲頻下對懸浮水體目標進行近同時、共位后向散射測量，能夠獲取粒徑分布特征。該技術適用于粒徑跨度大、顆粒濃度高的懸浮體系，可實現顆粒粒徑分布的精細表征。2018年7月，我們與美國NRL和EPA合作，在安全與環境執法局的OHMSETT溢油響應研究和可再生能源設施室外波浪罐（圖2）使用分散在鹽水中的HOOPS原油進行了ASL多頻向上聲納（圖1）的測試，并展示了初步結果。
關鍵詞：AZFP聲學浮游動物聲學剖面儀，水中油聲學檢測，溢油檢測，ASL
