1Analysis of Hydrographic Characteristics and Changes in Scour and Silting in the Laizhou Bay AreaCHENG Yi-ji, GAO Jing1-62Developments and Causes of Seawater Intrusion in the South Coast Area of the Laizhou BayFENG Ai-ping, GU Dong-qi, XIA Dong-xing7-133Analysis of River Channel Scour and Silting Evolution and Natural Condition of Navigation Channel in the Guanhe River Estuary AreaLIU Wei-yi, LOU Fei, YU Zhi-ying14-214Application of Floating Dock Transporting Technique of Caisson to Dock EngineeringZHANG Yong-xia, PANG Jin-ju22-285Comparative Study on Subgrade Bearing Capacity Characteristic Value and Pile Point Bearing Capacity Characteristic ValueDONG Cheng-xiang, FU Yi-peng29-326Study on Physicomechanical Properties of Bottom Sediments From the Zhongsha Natural Gas Hydrate Prospective Area of the South China SeaWEI Wei33-387Analysis of Effects of Sea Bottom Sand Waves on Submarine Cable Burial Operation in China SeasZHANG Xiao-long, XU Jia-sheng, TAO Hui-gang39-438Feasibility Study on Abandonment Schemes for China-Korea Submarine Fibre-optic Cable System (West Section)ZHANG Xiao-long, XU Jia-sheng, LIU Dun-wu44-499Analysis of Main Pollutant Sources Affecting Seawater Quality in the Jiaozhou Bay Area——Assessment of Present Water Quality in the Licun River and Its Main TributariesNIU Qing-shan, QI Liang50-5910Study on Effect of Chloride Ion Corrosion on Resistance of Reinforced Concrete ComponentNI Guo-rong60-6711Application of 3S Techniqus to the Invertigation of Sea Area Usage ConditionsGAO Wei-ming, LIU Jun-hui68-7312Quality Control on Marine Survey ResultsHU Guang-hai, DING Ji-sheng, CHEN Yi-lan74-7713Budget and Quotation Techniques in Bidding for A Hydraulic Engineering ProjectLIU Hong-xin, JIN Qi78-80