Submarine landslides in the western margin of the Ulleung Basin, East Sea

被引：0

作者：

Cukur, D. ^{[1
]}

Kong, G. -S. ^{[1
]}

Bahk, J. -J. ^{[1
]}

Horozal, Senay ^{[1
]}

Yoon, Y. ^{[1
]}

Kim, J. -K. ^{[1
]}

Choi, J. -G. ^{[1
]}

Kim, S. P. ^{[2
]}

机构：

[1] Korea Inst Geosci & Mineral Resources KIGAMR, Daejeon, South Korea

[2] Korea Inst Geosci & Mineral Resources KIGAM, Pohang Branch, Daejeon, South Korea

来源：

LANDSLIDES AND ENGINEERED SLOPES: EXPERIENCE, THEORY AND PRACTICE, VOLS 1-3 | 2016年

关键词：

SLOPE; FAILURES;

D O I：

暂无

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

We investigated submarine landslides along the western margin of the Ulleung Basin in the East Sea using sparker, subbottom profiler, and multibeam echosounder data. The analysis of bathymetric data indicates numerous U-shaped scars that initiate at water depths of similar to 600 m. The presence of large number of scarps in the source area suggests multiple failures rather than a single event. The individual scars are up to 60 m high and 4 km wide. Seismic data clearly image erosional headwalls and the basal sliding surface which is characterized by a prominent high-amplitude reflector. Chaotic-to-transparent seismic facies are seen immediately downslope of the headwall scarps; these chaotic facies represent landslide deposits of about 20 m in thickness. Earthquakes associated with tectonic activity were probably the primary triggering mechanism for these failures although other processes (i.e. gas charging and sea level fluctuations) may have acted as pre-conditioning factors.

引用

页码：715 / 720

页数：6

共 42 条

[41] Seismic sedimentological evidence for filling process of western Central Canyon System controlled by the evolution of the Tibetan Plateau and the East Asia monsoon since the Late Miocene, South China Sea
Wang, Dawei
Zeng, Hongliu
Wu, Shiguo
Wang, Weiwei
Li, Qingping
Mi, Lijun
INTERPRETATION-A JOURNAL OF SUBSURFACE CHARACTERIZATION, 2018, 6 (02): : SD41 - SD55
[42] Supply of terrigenous organic matter from tidal flat to the marine environment: An example of neritic source rocks in the Eocene Pinghu Formation, Xihu Depression, East China Sea Shelf Basin
Zhou, Shanshan
Li, Youchuan
Li, Jianping
Ding, Wenjing
Li, Xin
Zhang, Weilai
ACTA OCEANOLOGICA SINICA, 2023, 42 (03) : 138 - 150

← 1 2 3 4 5 →