Deciphering Depositional Processes of Continental Shelf Strata in the Northeastern East China Sea

Title
Deciphering Depositional Processes of Continental Shelf Strata in the Northeastern East China Sea
Author(s)
양우헌; 김병남; 금병철; 조창봉
KIOST Author(s)
Kim, Byoung Nam(김병남)
Publication Year
2018-02-15
Abstract
This study concentrates on the depositional processes of continental shelf strata in the northeastern limit area of the East China Sea. The study area is located between the East China Sea and the Yellow Sea of the epicontinental sea where experienced the dramatic sea-level changes during the Quaternary. The area is a low-gradient continental shelf in a water depth of ~100 m around 32°30 to 35N, 126°05 to 12E, about 70 km southwest of Cheju Island. It might be completely exposed during the last glacial maximum
(LGM). In the study area, the pre-LGM strata comprises incised channel fills and prograding deposits of fluvial, estuarine, or tidal origin. The postglacial transgression of the sea-level changes formed the paralic deposition of estuarine channel fills, prograding wedge and mound, marine sand veneer, and mud blanket. This study will reveal the depositional processes of the continental shelf strata, based on closely spaced high-resolution seismic profiles (Chirp and Sparker) with piston/grab/box cores. The detailed seismic survey (~110 line-km of 8 lines) and coring work including 36 piston cores were fulfilled in the relatively small marine area (15 x 10 km2 in area) for deciphering the depositional processes of different physical, sedimentological, and geoacoustic properties in the northeastern East China Sea.experienced the dramatic sea-level changes during the Quaternary. The area is a low-gradient continental shelf in a water depth of ~100 m around 32°30 to 35N, 126°05 to 12E, about 70 km southwest of Cheju Island. It might be completely exposed during the last glacial maximum
(LGM). In the study area, the pre-LGM strata comprises incised channel fills and prograding deposits of fluvial, estuarine, or tidal origin. The postglacial transgression of the sea-level changes formed the paralic deposition of estuarine channel fills, prograding wedge and mound, marine sand veneer, and mud blanket. This study will reveal the depositional processes of the continental shelf strata, based on closely spaced high-resolution seismic profiles (Chirp and Sparker) with piston/grab/box cores. The detailed seismic survey (~110 line-km of 8 lines) and coring work including 36 piston cores were fulfilled in the relatively small marine area (15 x 10 km2 in area) for deciphering the depositional processes of different physical, sedimentological, and geoacoustic properties in the northeastern East China Sea.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/23477
Bibliographic Citation
2018 Ocean Sciences Meeting, pp.1, 2018
Publisher
American Geophysical Union
Type
Conference
Language
English
Publisher
American Geophysical Union
Related Researcher
Research Interests

Underwater Acoustics,Bubble Acoustics,Marine Defense & Safety,수중음향,기포음향,해양방위·안전

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