Geoacoustic Model of Coastal Bottom Strata off the Northwestern Taean Peninsula in the Yellow Sea

Ryang, Woo-Hun; Kwon, Hyuckjong; Choi, Jee-Woong; Kim, Kyong-O; Hahn, Jooyoung

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자료유형: 학술저널

저자정보: Ryang, Woo-Hun (Division of Science Education and Institute of Science Education, Chonbuk National University) Kwon, Hyuckjong (Department of Marine Science and Convergence Engineering, Hanyang University-ERICA) Choi, Jee-Woong (Department of Marine Science and Convergence Engineering, Hanyang University-ERICA) Kim, Kyong-O (Korea Institute of Geoscience and Mineral Resources [KIGAM]) Hahn, Jooyoung (Agency for Defense Development)

저널정보: 한국지구과학회 한국지구과학회지 한국지구과학회지 제40권 제4호

발행연도: 2019.1

수록면: 428 - 435 (8page)

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In the shallow coastal area, located off the northwestern Taean Peninsula of the eastern Yellow Sea, geoacoustic models with two layers were reconstructed for underwater acoustic experimentation and modeling. The Yellow Sea experienced glacio-eustasy sea-level fluctuations during Quaternary period. Coastal sedimentation in the Yellow Sea was characterized by alternating terrestrial and shallow marine deposits that reflected the fluctuating sea levels. The coastal geoacoustic models were based on data from piston, grab cores and the high-resolution 3.5 kHz, chirp seismic profiles (about 70 line-kilometers, respectively). Geoacoustic data of the cores were extrapolated down to 3 m in depth for geoacoustic models. The geoacoustic property of seafloor sediments is considered a key parameter for modeling underwater acoustic environments. For simulating actual underwater environments, the P-wave speed of the models was adjusted to in-situ depth below the sea floor using the Hamilton method. The proposed geoacoustic models could be used for submarine acoustic inversion and modeling in shallow-water environments of the study area.

#geoacoustic model #geoacoustic property #coastal geoacoustic #Yellow Sea

참고문헌 (31)

참고문헌 신청

Carey, W. M. / 1995 / Shallow-water sound transmission measurements on the New Jersey continental shelf / IEEE Journal of Oceanic Engineering 20:321~336

Chough, S. K. / 2002 / High-resolution acoustic characteristics of epicontinental sea deposits, centraleastern Yellow Sea / Marine Geology 188:317~331

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Cummings, D. I. / 2016 / The tide-dominated Han river delta / Elsevier :376

Damuth, J. E. / 1980 / Use of high-frequency (3.5-12 kHz) echograms in the study of near-bottom sedimentation processes in the deep-sea: a review / Marine Geology 38:51~75

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이 논문의 저자 정보

Ryang, Woo-Hun

소속기관 Division of Science Education and Institute of Science Education, Chonbuk National University