A study on geotechnical properties of deep-sea sediments in Clarion-Clipperton fracture zone of NE Pacific SCOPUS KCI

Title
A study on geotechnical properties of deep-sea sediments in Clarion-Clipperton fracture zone of NE Pacific
Author(s)
Chi, S.-B.; Oh, J.-K.; Lee, H.-B.; Kim, K.-H.
KIOST Author(s)
Chi, Sang Bum(지상범)
Publication Year
2003
Abstract
Deep-sea surface sediments were collected using a multiple corer at 20 stations of Clarion-Clipperton fracture zone in the northeast equatorial Pacific to understand latitudinal and longitudinal variations of geotechnical properties. There was a distinct latitudinal variation of geotechnical properties in the study area. The northern sediments showed finer grain size, lower water content and porosity, higher bulk density and specific grain density, lower liquid limits and plastic limits than their southern counterparts. The northern sediments are classified into inorganic clays of low plasticity (fat clays) on plasticity charts and normal to active clay on activity chart, whereas, the southern sediments are classified into fine-grained, highly-plastic, inorganic and biogenic silt or organic clays on plasticity chart and normal to very active clay on activity chart. When shear strength are considered, the northern sediments were found to be in unconsolidated states, while the southern ones to be normal to over-consolidated states. These latitudinal variations in sediment characteristics are likely caused by differences in productivity of surface water that controls sediment compositions, sedimentation rates, and grain solubility.
ISSN
1598-141X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/5592
DOI
10.4217/OPR.2003.25.2.133
Bibliographic Citation
Ocean and Polar Research, v.25, no.2, pp.133 - 145, 2003
Publisher
Korea Ocean Research and Development Institute
Subject
deep sea; fracture zone; geotechnical property; marine sediment; plasticity; (Northeast); Pacific Ocean
Keywords
Dee-sea sediments; Geotechnical properties
Type
Article
Language
Korean
Document Type
Article
Publisher
Korea Ocean Research and Development Institute
Related Researcher
Research Interests

deep sea mineral resources,deep sea sediments,심해저 광물자원,심해저 퇴적물,심해 환경

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