Temporal Variability in Acoustic Behavior of Snapping Shrimp in the East China Sea and Its Correlation With Ocean Environments
- Title
- Temporal Variability in Acoustic Behavior of Snapping Shrimp in the East China Sea and Its Correlation With Ocean Environments
- Author
- 신성원
- Keywords
- snapping shrimp noise; passive acoustic monitoring; noise detection; snap rate; environmental factors
- Issue Date
- 2021-11
- Publisher
- FRONTIERS MEDIA SA
- Citation
- FRONTIERS IN MARINE SCIENCE; NOV 22 2021, 8 p779283 11p.
- Abstract
- The snapping shrimp sound is known to be a major biological noise source of ocean
soundscapes in coastal shallow waters of low and mid-latitudes where sunlight reaches.
Several studies have been conducted to understand the activity of snapping shrimp
through comparison with surrounding environmental factors. In this paper, we report
the analysis of the sound produced by snapping shrimp inhabiting an area where
sunlight rarely reaches. The acoustic measurements were taken in May 2015 using
two 16-channel vertical line arrays (VLAs) moored at a depth of about 100 m, located
∼100 km southwest of Jeju Island, South Korea, as part of the Shallow-water Acoustic
Variability Experiment (SAVEX-15). During the experiment, the underwater soundscape
was dominated by the broadband impulsive snapping shrimp noise, which is notable
considering that snapping shrimp are commonly observed at very shallow depths of
tens of meters or less where sunlight can easily reach. To extract snapping events in
the ambient noise data, an envelope correlation combined with an amplitude threshold
detection algorithm were applied, and then the sea surface-bounced path was filtered
out using a kurtosis value of the waveform to avoid double-counting in snap rate
estimates. The analysis of the ambient noise data received for 5 consecutive days
indicated that the snap rate fluctuated with a strong one-quarter-diurnal variation
between 200 and 1,200 snaps per minute, which is distinguished from the periodicity
of the snap rate reported in the euphotic zone. The temporal variation in the snap rate
is compared with several environmental factors such as water temperature, tidal level,
and current speed. It is found that the snap rate has a significant correlation with the
current speed, suggesting that snapping shrimp living in the area with little sunlight might
change their snapping behavior in response to changes in current speed.
- URI
- https://www.frontiersin.org/articles/10.3389/fmars.2021.779283/fullhttps://repository.hanyang.ac.kr/handle/20.500.11754/169728
- ISSN
- 22967745
- DOI
- 10.3389/fmars.2021.779283
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > MARINE SCIENCE AND CONVERGENCE ENGINEERING(해양융합공학과) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML