Publications by authors named "Hansen D Johnson"
The goal of this study was to characterize the detection range of a near real-time baleen whale detection system, the digital acoustic monitoring instrument/low-frequency detection and classification system (DMON/LFDCS), equipped on a Slocum glider and a moored buoy. As a reference, a hydrophone array was deployed alongside the glider and buoy at a shallow-water site southwest of Martha's Vineyard (Massachusetts, USA) over a four-week period in spring 2017. A call-by-call comparison between North Atlantic right whale upcalls localized with the array (n = 541) and those detected by the glider or buoy was used to estimate the detection function for each DMON/LFDCS platform.
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- In 2017, the death of North Atlantic right whales in Canada prompted the need for real-time whale distribution information, leading to the development of dynamic mitigation measures.
- Underwater glider-based acoustic monitoring was explored for collecting this data, despite its challenges such as self-noise and limited data transfer capabilities.
- A successful trial in 2018 demonstrated that the glider system could reliably detect whale species, making it a promising tool for informing conservation strategies for endangered whales like the North Atlantic right whale.