Geoacoustic inversion using air gun sounds measured by a single hydrophone in the East Siberian Sea
- Authors
- Lee, Dae Hyeok; Choi, Jee Woong; Han, Dong-Gyun; La, Hyoung Sul; Yang, Eun Jin
- Issue Date
- Jan-2022
- Publisher
- International Commission for Acoustics (ICA)
- Keywords
- Air gun sounds; Arctic ocean; Dispersion curves; Geoacoustic inversion; Single hydrophone
- Citation
- Proceedings of the International Congress on Acoustics, pp 1 - 2
- Pages
- 2
- Indexed
- SCOPUS
- Journal Title
- Proceedings of the International Congress on Acoustics
- Start Page
- 1
- End Page
- 2
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/113133
- ISSN
- 2226-7808
2415-1599
- Abstract
- Korea Polar Research Institute had operated after installing a bottom-moored single hydrophone in the East Siberian continental margin in the Arctic Ocean for about one year from August 2019 for long-term underwater noise monitoring. In addition, a seismic survey using an air gun was conducted in September 2019, and the air gun sounds were received by the hydrophone. The modal dispersion curves were observed in the result of spectrogram analysis of the air-gun signals received at distances of several tens of km between the sound source and the hydrophone. We extracted the dispersion curves from the spectrogram using a time-warping signal processing. Inversion of geoacoustic parameters such as sound speed and density in the sediment layer was carried out by minimizing the mismatch between extracted dispersion curves and the replicas predicted by the KRAKEN normal-mode propagation program. The results will be discussed through comparison with the sedimentary environment of the East Siberian Sea. © ICA 2022.All rights reserved
- Files in This Item
-
Go to Link
- Appears in
Collections - COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY > DEPARTMENT OF MARINE SCIENCE AND CONVERGENCE ENGINEERING > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.