Late Neogene-Quaternary submarine mass wasting along the margins of the Ulleung Basin, East Sea: Geomorphologic controls and geohazard potential SCIE SCOPUS

Cited 13 time in WEB OF SCIENCE Cited 16 time in Scopus
Title
Late Neogene-Quaternary submarine mass wasting along the margins of the Ulleung Basin, East Sea: Geomorphologic controls and geohazard potential
Author(s)
Horozal, Senay; Bahk, Jang Jun; Lee, Sang Hoon; Urgeles, Roger; Kim, Seong Pil; Kim, Gil Young; Cukur, Deniz; Lee, Gwang Hoon; Ryu, Byong Jae; Kim, Jin Ho
KIOST Author(s)
Lee, Sang Hoon(이상훈)
Publication Year
2016-01-21
Abstract
Seismic reflection data from the Ulleung Basin, East Sea, provide extensive evidence for Plio-Quaternary mass transport deposits (MTDs). We identified 23 MTDs embedded in 7 MTD bearing seismic units (U1-U7, from oldest to youngest) and estimated their geometric characteristics and source areas. The thicknesses and volumes of these MTDs range between 25 m and 392 m, and 13 km(3) -550 km(3), respectively. The depth of the acoustic basement below sea level varies between about 100 m in the western margins to over 5900 m in the central part of the basin and highlights eight structural highs in the central and southern parts of the basin. These structural highs had a major role in controlling the pathway and distribution of the MTDs in the basin. In general, the thickest MTD units are sourced from the southern parts of the basin and the volume of these MTDs has remained relatively constant throughout the Plio-Quaternary. The seismic reflection data also reveal about 50 m high slide/slump scars formed on the seafloor by the latest submarine landslides which mainly concentrate on the southern and western margins of the basin. High-sedimentation rates and pore pressure build-up are likely the predominant factor controlling initiation of slope failures in the southern margin. Tectonics and gas hydrates likely play a role, too. The initial water depth of submarine landslides and volume and runout of the MTDs originating from the southern margin imply significant geohazard to the region. (C) 2015 Elsevier Ltd and INQUA. All rights reserved.
ISSN
1040-6182
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2284
DOI
10.1016/j.quaint.2015.06.056
Bibliographic Citation
QUATERNARY INTERNATIONAL, v.392, pp.69 - 98, 2016
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Subject
JAPAN SEA; CONTINENTAL-MARGIN; SLOPE-STABILITY; STOREGGA SLIDE; SEISMIC STRATIGRAPHY; GAS HYDRATE; LANDSLIDES; SCALE; MECHANISMS; FAILURES
Keywords
Submarine landslides; Mass transport deposits; 2-D seismic data interpretation; Ulleung Basin; East Sea
Type
Article
Language
English
Document Type
Article
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
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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