Out – put of Sonar Exploration Record of side-scan sonar Record of Sub-bottom profiling
Soil Investigation of the ocean floor by boring （Ｓｏｕｒｃｅ ｆｒｏｍ Ｊａｐａｎｅｓｅ ｅｘｐｌｏｒａｔｉｏｎ ｃｏｍｐａｎｙ）
Schematic view under the sea of boring stage (self-standing system)
Surveys of Natural Condition & Analyses -Ocean Floor (Caldera, Hydrothermal) -Sonic Exploration -Seismic (Intensity, Hazard) -Tsunami Waves -Meteorological Data& Analyses Optimization of the Project Route ,Type of Structures, and Locations of Foundations Redundancy concept for Structural System Setting –up the Criteria (Standards & Specifications) Basic Condition Study and Feasibility Study Importance of Natural Condition Surveys
PRIORITIZED ACTIVITIES 2011 2012 2013 2014 2015 Natural Condition Surveys Preliminary Detailed Supplement Basic Condition Study (Optimization) Stand.& Spec. Feasibility Study (Reality of the Project) F/S Detailed Design & Procurement D/D Economic Impact Study Economic Impact Administrative Activities Administ.