《广东海洋大学学报》2008年第28卷总目次

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Bathymetry and bottom albedo retrieval using Hyperion: a case study of Thitu Island and reef

The Spratly （Nansha） Islands in the South China Sea have considerable economic and important militarily strategic status. Ocean color remote sensing is an effective mean of surveying and research and especially it is useful for areas that are difficult to access, such as Thitu Island and its reef in the Spratly Islands. The Hyper-spectral Optimization Process Exemplar （HOPE） model, developed by Lee et al. （1999） is a rapid and robust bathymetry method that uses hyper-spectral remote sensing. In this study, using Hyperion hyper-spectral sensor data and HOPE, we derive bathymetry and bottom albedo measurements around Thitu Island and its reef. We compare the distribution of bottom depths from C-MAP with that derived from the Hyperion data. The retrieved bathymetry results correlate well with the distribution obtained from the bathymetry contour from 2.0 to 20 m. The average difference between Hyperion and C-MAP for two selected transects was 17.1% （n=59, R=0.848, RMSE=2.342） and 10.9% （n=59, R2=0.834, RMSE=0.463）. The retrieved bottom albedo is homogeneous in the lagoon and significantly non-homogeneous around the lagoon. These results indicate that HOPE could be very useful for bathymetry studies for the islands of the South China Sea.     

铮铮男儿亦温情——记大庆市国土资源局让胡路分局局长 张海波

“只要是诉求合法,就一定要千方百计提供帮助。老百姓是弱势群体,他们办点事不容易。”放下电话,张海波面色充满着温情。“我一直倡导以情动人的工作方式。带着感情去工作,在工作中加深感情,不仅有利于创造和谐的工作环境,更有利于工作的开展。”     

仰望星空三部曲 赞美《星海波影》《天庭狐步》《南国巡天》

科学普及出版社最近推出了三本天文科普书,它们是国家“十一五”重点图书规划项目中“迈向宇宙的天梯”从书。美丽星空系别中的《星海波影》、《天庭狐步》、《南国巡天》。16开本,每册约七八十页,铜版纸彩印,图文并茂、编排醒目,在科普图书特别是天文科普读物中别具风格的原创作品。让读者在艺术欣赏中阅读和观测：在科学探索中享受宇宙之美。     

分析作用于小桩柱波力的谱方法

确定海浪对海上孤立建筑物作用力的特征是海工设计中应考虑的主要问題之一。 近年来,人们开始用谱方法分析海波力的统计特征。这个问题可归结为求两个高斯平稳过程通过两元非线性过滤器的畸变谱及输出过程的分布。 从这样的提法出发,本文以较一般的形式导出了波力谱与表面谱的关系,并利用厄米多项式的特性,给出了波力分布密度的表达式。它表明,在海波作用下。桩柱所受的力是一准高斯过程,据此可导出一些近似的统计关系。 为了叙述方便,我们的讨论仅限于一维波动情况。