Geotechnical properties of submarine sediments in the Seto Inland Sea |
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| Authors: | Shigeyasu Okusa Takaaki Nakamura Naoki Dohi |
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| Affiliation: | 1. Department of Ocean Civil Engineering, Faculty of Marine Science and Technology , Tokai University , Orido, Shimizu Shizuoka, 424, Japan;2. Kensetsu Kiso Chosa Sekkei Co., Ltd. |
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| Abstract: | Abstract Sampling of submarine sediments by an improved piston corer and a bucket dredger has been carried out since 1973. The length of the core samples ranged from 0.9 m to 5.4 m. The recovery ratio ranged from 39.1 percent to 98.9 percent. The physical and engineering properties of 16 sediment cores and the physical properties of 125 dredged samples were determined, and variation of these properties was analyzed. Clayey silts and silty clays cover the floor of relatively wide bays and sea areas. Sands and sandy silts blanket the floor of channels that have swift currents, and are also found in the vicinity of estuaries. The piston core samples showed considerable sample disturbance, which should be estimated quantitatively in the future. |
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| Keywords: | Analysis calcareous soil cyclic loading foundations offshore piles piling soil mechanics |
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