이작도 주변해역 Side Scan Sonar 해저면 음향영상

Title
이작도 주변해역 Side Scan Sonar 해저면 음향영상
Alternative Title
Side scan sonar seafloor acoustic images around coastal area of Isakdo
Author(s)
김성렬; 우한준; 정섬규
KIOST Author(s)
Woo, Han Jun(우한준)
Publication Year
2007-10-26
Abstract
Ijakdo is located 44km west of Incheon and divided into Daeijakdo and Soijakdo. The coastal area of Ijakdo has natural conditions with clean sea water and sandy beaches. Tide is typically semidiurnal with mean range of 491.1cm. Tidal currents are relatively high in velocity in Seosudo between Daeijakdo and Soado. Surface sediments for sedimentary analyses were sampled at 72 stations. Surface sediments consisted of six sedimentary facies and dominated well-sorted sand except near the islands. According to the acoustic pressure of side scan sonar calculated from the back-scattering intensity, seafloor image in Ijakdo coast is mainly divided into two characteristics, the rocky bottom with gravels (high intensity) and the well-sorted sand area (low intensity). Specially the large scaled rocky bottom structures are found out at the northern part of the Ijakdo coast. The distribution boundary of rock (gravel) and sand is shown as a clean linear type. The seafloor image in the eastern part of the Ijakdo coast, where the semidiurnal tidal current is passing through, is interpreted to the scarped out-crop rocky bottom with gravels.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/30274
Bibliographic Citation
2007년도 후기학술대회논문집, pp.115 - 118, 2007
Publisher
(사)한국마린엔지니어링학회
Type
Conference
Language
Korean
Publisher
(사)한국마린엔지니어링학회
Related Researcher
Research Interests

Coastal Sedimentary Processes,Micropaleontology(Foraminifera and Pollen),Paleoenvironmental Reconstruction,연안퇴적작용,미고생물(유공충 및 화분),고환경 복원

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