کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4696124 1351657 2011 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Geotechnical properties of deep oceanic sediments recovered from the hydrate occurrence regions in the Ulleung Basin, East Sea, offshore Korea
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی اقتصادی
پیش نمایش صفحه اول مقاله
Geotechnical properties of deep oceanic sediments recovered from the hydrate occurrence regions in the Ulleung Basin, East Sea, offshore Korea
چکیده انگلیسی

This study presents comprehensive geotechnical data of the natural marine sediments cored from the hydrate occurrence regions during the Ulleung Basin Gas Hydrate Expedition 1 (UBGH1), East Sea, offshore Korea in 2007. Geotechnical soil index properties of the Ulleung Basin sediments, including grain size distribution, porosity, water content, Atterberg limits, specific gravity, and specific surface area, were experimentally determined. These soil index properties were correlated to geotechnical engineering parameters (e.g., shear strength and friction angle) by using well-known empirical relationships. By performing standard consolidation tests on both undisturbed specimens (as recovered from the original core liner after hydrate dissociation) and remolded specimens, stress-dependent mechanical and hydraulic properties (e.g., compressibility and hydraulic conductivity) were measured. The experimental results provide important engineering parameters, and demonstrate the effect of hydrate presence and consequential dissociation to index properties, engineering parameters, and innate sediment structures.


► We present geotechnical data of the Ulleung Basin sediments from the hydrate regions.
► The sediments are mostly classified as high plastic clayey silts containing diatoms.
► Presence of diatoms increases specific surface area, plasticity, and compressibility.
► Hydrate presence and consequential dissociation affect innate sediment structures.
► High water content and low electrical conductivity may indicate hydrate presence.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Marine and Petroleum Geology - Volume 28, Issue 10, November 2011, Pages 1870–1883
نویسندگان
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