Atmospheric Correction of SeaWiFS Data for the Retrieval of Suspended Sediment in East China Coastal Waters

The data of SeaWiFS (Sea-Viewing Wide Field-of-View Sensor), installed on SeaStar, has been used to generate SSC (suspended sediment concentration) of complex and turbid coastal waters in China. In view of the problems of the SeaDAS (SeaWiFS Data Analysis System) algorithm applied to China coastal waters, a new atmospheric correction algorithm is discussed, developed, and used for the SSC of East China coastal waters. The advantages of the new algorithm are described through the comparison of the restdts from different algorithms.     

珠江口海岸带环境问题及管理

人类活动的影响和自然变化因子的叠加，使珠江口海岸带面临着环境污染、生态恶化、海岸工程安全系数降低和渔业资源衰退等诸多问题。实行海岸带综合管理是该区可持续发展的有效途径。讨论了海岸带综合管理模式，并就珠江口海岸带存在的主要环境问题提出了合理的建议和行动措施。     

1994年中国海灾害性海浪特征分析

随着沿海经济的快速和海上生产活动的增多，海浪的短期预报及长期预测越来越波人们重视。本文主要分析了１９９４年灾害性海浪的特征，以供沿海地区及从事海洋开发、渔业、运输事业的部门参考。     

Experimental Investigation of Instantaneous Properties of Wave Slamming on the Plate

The purpose of this paper is to investigate the instantaneous properties of wave slamming on the plate structure of an open structure.The advanced instantaneous measuring technique-Particle Image Velocimetry(PIV) is applied to acquire the instantaneous velocity field of wave slamming.From the cross-correlation analysis results of the images captured by the CCD camera,the flow fields of wave impacting on the structure are displayed visually,and the instantaneous whole-field fluid velocity vectors are obtained.The relation between the instantaneous peak impacting pressures and the instantaneous velocities of water particles is studied by probability analysis.     

Damage Detection Methods for Offshore Platforms Based on Wavelet Packet Transform

1 .IntroductionInthe whole service period of the platforms ,some damage is unavoidable due to the corrosion,impact ,fatigue and so on.The damage whould cause the structures’ultimate capacity and safety de-crease .Presently,it is generally acceptedthat the detection of damage involes considerable statisticaluncertainties,thus lot of efforts is made for the damage probalility model ,for example Song and Lu(1996) usedthefuzzy-settheoryto estimatethe humanerrorsthroughthe definitionof inspection…     

灾害性海冰航空遥感监测实时传输系统

本文介绍应用遥感技术，电子技术，计算机技术，无线通信技术为一体的综合研究，实现了海洋航空遥感监测数据实时传输系统，文中对该系统的总体设计，系统组成，工作原理，遥感信息的采集处理，数据通信，地面数据接收及试验结果作了详细的说明。     

软土海岸地区测量控制点标志的设立

分析了软土、湿地、滩涂地区特殊地理环境对测量控制点的影响;主要探讨了此类地区控制点标志的设计、施工。借助于建筑桩基技术和道桥施工方法,首次成功实现了某三角洲湿地滩涂地区统一布网。几年来,结合滩涂湿地测量、海岸防护和滩涂开发工程对部分控制点进行了初步检测,给出了部分检测数据。应用和检测均表明:桩基标石可较好地解决软土、湿地、滩涂地区控制点布设难题,显著提高软土海岸地区测量控制点标志的稳固性,从而延长控制网的可使用期。     

全球海洋的风暴潮灾害概况

风暴潮能造成特大自然灾害而越来越受到人们的关注。世界上遭受温带和热带风暴袭击的沿岸国家,都有深受风暴潮灾害的历史记载,其重灾区分布在频繁遭受强风暴袭击的浅海沿岸区域。现将有关情况分述如下。 一、太平洋沿岸区域 在西太平洋沿岸国家中,我国是受台风袭击最多的国家,有34％的热带气旋（包括热带低压,热带风暴、强热带风暴,台风）在我国登陆。我国风暴潮灾害居西太平洋沿岸国家之首。我国台风风暴潮灾的分布几乎遍布各滨海地区,特别是沿海重点经济开发区,如长江口、杭州湾、闽江口、珠江口以及雷州半岛东岸和海南岛东北部,均在风暴危害严重岸段。