Locating fish bomb blasts in real-time using a networked acoustic system

Showen, R. L.; Dunson, C.; Woodman, George H.; Christopher, Steven J.; Lim, T.; Wilson, Simon

doi:10.1016/j.marpolbul.2018.01.029

Cited by 10 publications

(4 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For these purposes, it is more important that the microphone is robust than calibrated. Other future avenues is to incorporate network connectivity to allow data and information transfer from the field (Panicker et al, 2019;Showen et al, 2018;Thode et al, 2000).…”

Section: Future D Irec Ti On Smentioning

confidence: 99%

The Kinabalu Recorder, a new passive acoustic and environmental monitoring recorder

Karlsson

Tay²,

Imbun

et al. 2021

Methods Ecol Evol

View full text Add to dashboard Cite

show abstract

Section: Future D Irec Ti On Smentioning

confidence: 99%

The Kinabalu Recorder, a new passive acoustic and environmental monitoring recorder

Karlsson

Tay²,

Imbun

et al. 2021

Methods Ecol Evol

View full text Add to dashboard Cite

show abstract

“…Remote, autonomous passive acoustic monitoring (PAM) provides a non-invasive means of recording and archiving acoustic information gathered from the environment (Mellinger et al, 2007). This technique can be used to monitor anthropogenic noise introduced by vessels (Blair et al, 2016), sonar (Harris et al, 2018), seismic surveys (Pirotta et al, 2014), or underwater explosives (Showen et al, 2018). Many marine species including fish, invertebrates, and marine mammals produce sound in accordance with critical life functions-e.g., reproduction (Herman, 2016;Rowell et al, 2017), territory defense (Matthews et al, 2018), and foraging (Remage-Healey et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Biological Sound Sources Drive Soundscape Characteristics of Two Australian Marine Parks

et al. 2021

View full text Add to dashboard Cite

Soundscapes represent an intrinsic aspect of a habitat which, particularly in protected areas, should be monitored and managed to mitigate human impacts. Soundscape ecology characterizes acoustic interactions within an environment, integrating biological, anthropogenic, climatological, and geological sound sources. Monitoring soundscapes in marine protected areas is particularly important due to the reliance of many marine species on sound for biological functions, including communication and reproduction. In this study we establish a baseline understanding of underwater soundscapes within two marine National Park Zones (NPZs) along the east coast of Australia: Cod Grounds Marine Park and an NPZ surrounding Pimpernel Rock within Solitary Islands Marine Park. In each of the NPZs, underwater recorders were deployed twice during the austral winter (33–35 days, 2018 and 60–69 days, 2019) and once during the austral summer (35–71 days, 2018–2019). We used the resulting acoustic recordings to determine hourly presence of anthropogenic and biological sounds between 20 Hz and 24 kHz and analyze their contributions to patterns of received sound levels. Sounds from vessels were recorded on most days throughout monitoring but were not found to influence long-term patterns of sound levels over their corresponding frequencies. Biological sources included dolphins, snapping shrimp, fish choruses, humpback whales, and dwarf minke whales. Dolphins, snapping shrimp, and fish choruses were present in all deployments. Median ambient sound levels showed a consistent diel pattern with increased levels resulting from crepuscular fish choruses combined with a higher intensity of snapping shrimp snaps during those times. Singing humpback whales strongly influenced the overall sound levels throughout the winter migration, while dwarf minke whales were consistently detected in the 2019 winter deployment but were only present in 2 h among the earlier deployments. Patterns of acoustic spectra were similar between the two NPZs, and patterns of soundscape measurements were observed to be driven by seasonal differences in biological contributions rather than anthropogenic sound sources, indicating that these NPZs are not yet heavily impacted by anthropogenic noise. These baseline measurements will prove invaluable in long-term monitoring of the biological health of NPZs.

show abstract

“…All of these activities produce characteristic acoustic events that can be automatically detected [ 7 , 8 ] and employed to devise law enforcement tools and control mechanisms. It would be desirable to develop UNDEX detection procedures that do not just rely on the reported data.…”

Section: Introductionmentioning

confidence: 99%

“…Traditional machine-learning techniques for UNDEX detection found in the literature are based on obtaining the energy, duration [ 10 , 15 ], and some frequency-related parameters in order to obtain an acoustic signature [ 7 ]. Although these techniques provide fairly good detection percentages, they fail to detect UNDEX events in the two situations previously described.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Arrow-of-Time Metrics for the Characterization of Underwater Explosions

Miralles

Lara

Carrión

et al. 2021

Sensors

View full text Add to dashboard Cite

Anthropogenic impulsive sound sources with high intensity are a threat to marine life and it is crucial to keep them under control to preserve the biodiversity of marine ecosystems. Underwater explosions are one of the representatives of these impulsive sound sources, and existing detection techniques are generally based on monitoring the pressure level as well as some frequency-related features. In this paper, we propose a complementary approach to the underwater explosion detection problem through assessing the arrow of time. The arrow of time of the pressure waves coming from underwater explosions conveys information about the complex characteristics of the nonlinear physical processes taking place as a consequence of the explosion to some extent. We present a thorough review of the characterization of arrows of time in time-series, and then provide specific details regarding their applications in passive acoustic monitoring. Visibility graph-based metrics, specifically the direct horizontal visibility graph of the instantaneous phase, have the best performance when assessing the arrow of time in real explosions compared to similar acoustic events of different kinds. The proposed technique has been validated in both simulations and real underwater explosions.

show abstract

Locating fish bomb blasts in real-time using a networked acoustic system

Cited by 10 publications

References 14 publications

The Kinabalu Recorder, a new passive acoustic and environmental monitoring recorder

The Kinabalu Recorder, a new passive acoustic and environmental monitoring recorder

Biological Sound Sources Drive Soundscape Characteristics of Two Australian Marine Parks

Assessment of Arrow-of-Time Metrics for the Characterization of Underwater Explosions

Contact Info

Product

Resources

About