Origin of deep-water sediment waves in the Ulleung Interplain Gap, East Sea SCIE SCOPUS KCI

Cited 3 time in WEB OF SCIENCE Cited 0 time in Scopus
Title
Origin of deep-water sediment waves in the Ulleung Interplain Gap, East Sea
Author(s)
Lee, SH; Bahk, JJ; Chough, SK
KIOST Author(s)
Lee, Sang Hoon(이상훈)
Publication Year
2003-03
Abstract
A detailed analysis of Chirp (2-7 kHz) subbottom profiles and a long (ca. 10 m) piston core reveals origin of deepwater sediment waves in the Ulleung Interplain Gap (UIG). On the basis of acoustic and lithologic characters, the sediments are divided into two units: 1) upper transparent unit (UTU) and 2) lower wavy stratified unit (LWSU). The LWSU is characterized by a few regular wavy reflectors with upslope migration. Also, it gradually decreases downslope in wave height, wave asymmetry and thickness, and consists dominantly of fine-grained turbidites with subordinate pelagic and hemipelagic sediments. These sedimentary features indicate that the LWSU was most likely generated by turbidity currents, rather than bottom currents. The UTU, discordant to the reflectors of the underlying LWSU, mostly comprises muddy contourites and manganiferous contourites with rare fine-grained turbidites, reflecting intensified bottom-current activity and infrequent input of turbidity currents from the slopes of the Oki Bank and Dok Island. Under these conditions, a thin (3-6 m thick), elongate mound of bottom-current deposits (UTU) formed on the fine-grained turbidity current waves (LWSU).
ISSN
1226-4806
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/5542
DOI
10.1007/BF02910266
Bibliographic Citation
GEOSCIENCES JOURNAL, v.7, no.1, pp.65 - 71, 2003
Publisher
HANRIMWON PUBLISHING COMPANY
Subject
TURBIDITY CURRENTS; JAPAN SEA; CONTINENTAL-MARGIN; TSUSHIMA BASIN; INDIAN-OCEAN; FLOW; CLASSIFICATION; FEATURES; DEPOSITS; ATLANTIC
Keywords
fine-grained turbidity current sediment waves; bottom-current deposits; deep-water passage; Ulleung Interplain Gap; East Sea
Type
Article
Language
English
Document Type
Article
Publisher
HANRIMWON PUBLISHING COMPANY
Related Researcher
Research Interests

Marine Geology,Marine Sedimentary Environments and Processes,Submarine slope failures and stability,해양지질,해양퇴적 환경 및 작용,해저사면 사태 및 안정성

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