1Research on Land Subsidence Mechanisms of Mega-River Deltas:Taking the Yellow River Delta as the CaseFU Yun-xia, GUAN Yong, WANG Xiao-dan, WANG Jian-shou, YIN Zheng, ZHOU Xiao-xue, WANG Qing, XU Mei-jun83-952Analysis of Optimization and Decision-Making of Ballast Allocation Scheme for Revolving Crane VesselMENG Xun, TANG Pin, LI De-jiang, SUN Long-long96-1063Application of Anti-Wave Sediment Barrier in the Design of Artificial BeachZHOU Ying-tao, WANG Wei-qun, ZHANG Chen-hao, Lu Yang107-1204Study on the Effect of Sand Compensation Measures for Coastal Erosion of Sanya New Airport Proj ectLIU Zhen, CHENG Yong-zhou, GE Long-zai, XIA Bo121-1305Characteristics of the Shallow Stratigrafic Structure in the Sea Area Near the Zhifu Bay,ShandongGU Xiao-yuan, WANG Wei131-1396Numerical Simulation of Water Quality Purification of Engineering Water Body in the Artificial BeachLI Xiao-shuang, CUI Hai-tao, DU Xiao-tao140-1477Analysis of Common Interference Factors in the Measurement of Shallow Stratum ProfileLIU Hong-yang, ZHANG Yi-biao, LI Bin, LI Jun-jie, CAI Chun-lin, TANG Song-hua, LIU Da-peng148-1568Study on the Construction of Warning Tide Level Markers Along the Coast of Hainan ProvinceCHEN Zhou, FU Ye-quan, WANG Qing-yan, XIONG Jia-cai, SHI Hai-ying, LI Meng-zhi, ZHU Wan-li157-164