中国陆架海绿石分布特征及其意义

本文根据实际资料,简要概括了中国大陆架海绿石的分布规律和形成环境。海绿石的富集区与氧化环境,粗粒沉积和残留沉积区相一致。该研究为恢复古沉积环境提供了依据。     

台风"杜鹃"影响期间福建大风天气的特点及成因

台风“杜鹃”影响期间，福建大风天气出现的比较早，而且范围比较大．本文通过对天气尺度的环境场、具有代表性的单站资料的对比分析，寻求大风出现的原因．还深入利用MM5模式对台风的气压场、风场、流场等进行数值模拟，分析结果表明台湾地形倒槽的形成对此次大风天气出现有着重要的作用，此外从流场分型的角度进一步分析台湾地形倒槽的形成原因．     

喀斯特荒漠化是一种地质—生态灾难

ＫＤＮ是一种ＧＥＯＬ－ＥＣＯＬ灾难,是发生潮湿的碳酸盐岩区的土壤侵蚀、土地退化与生态系统凋萎,致使人类很难生活在其中。ＫＤＮ是我国四大ＧＥＯＬ－ＥＣＯＬ灾害中最难整治、最难摆脱贫困的地区。本文按国际公认的原则为准,认定“石山化”≠ＫＤＮ,从地质结构性气候、物候和生态系统多因子厘定了ＫＤＮ术语,认定人为扰动与人口超载是其产生的序参量。其过程最迟也是３００多年前明清朝代屯垦开始,近半个世纪加速衰竭,森     

洋浦近岸海域污染控制规划方案优化——Ⅰ.排污口位置优选

在洋浦近岸海域计算潮流场基础上,计算预选排污口附近海水质点运动轨迹及预测污染物浓度分布,最后,从环保角度出发,推荐了洋浦地区各开发区的排污口位置,为洋浦近岸海域污染控制规划方案的制定及其优化提供了依据。     

秦山核电站邻近水域生态特点

本文综述了1989年4月至1990年1月秦山核电站邻近水域生态调查结果,认为,该水域具暖温带强潮河口区生态特征。水体虽含丰富营养盐和充足溶解氧,由于同时存在着各种不利于生物繁殖生长的环境因子,表现为生物资源贫瘠、种类组成简单,测区所代表的强潮河口湾顶区属低生产力水域。     

福州市马尾地区第四纪地层划分及海相层分析

通过对该区钻孔剖面贡料,结合~(14)C、古地磁、孢粉及微体古生物等资料综合分析研究,对该区第四纪地层提出划分意见和自第四纪晚期以来,地层中存在着典型两期海侵所形成的海相层。     

High parallelization efficiency in barotropic-mode computation of ocean models based on multi-grid boundary ghost area

In general, barotropic-mode computation requires the largest communication time in ocean models because of its iterative nature, when parallel computation is performed based on regional partitioning. In this study, reduction in the overhead time included in the communication in the parallel computation of the barotropic mode is considered to achieve a high parallelization efficiency of ocean models. We verify that the reduction in the communication frequency based on the multi-grid boundary ghost area reduces the total communication time. We find that this is because the sum of several kinds of overhead time for communication occupies a fairly large part of the total communication time. We discuss the trade-off between the decrease in communication time and the increase in computation time due to increased boundary area in such cases, leading to a determination of a suitable width of the multi-grid boundary that minimizes the total required time. We also discuss the efficiencies of the one- and two-dimensional partitioning of the model domain, when a multi-grid boundary is used. In general, two-dimensional partitioning is more efficient than one-dimensional for large partitioning numbers.     

渤海海域的上第三系油气研究

综述了渤海湾盆地沉积与构造活动在时间与空间上的迁移与演化、烃源岩与储盖层的空间分布规律，结合盆地内的勘探现状分析了渤海湾海域上第三系的油气远景。认为盆地内凸起、低凸起以上第三系为主体，伴有东营组和前第三系油气藏的复式油气聚集带是目前渤海油气勘探最现实的有利目标。     

Coping with disaster: Rehabilitating coastal livelihoods and communities

This paper examines lessons from past approaches to natural disasters, as well as early lessons from the post-2004 Asian tsunami rehabilitation, to draw out general principles for rehabilitating livelihoods in poor coastal communities. We contend that avoiding the mistakes of the past requires: (1) a framework for understanding the diversity of coastal people's livelihood strategies and the sources of their vulnerability, (2) a process for designing interventions that build on this understanding in order to strengthen and revitalize coastal communities, including a means of assessing and selecting the most promising livelihood options, and (3) a focus on the longer-term challenge of building future resilience and sustainability in the communities by addressing the root causes of vulnerability.     

GIS方法在南沙群岛海区海底灾害地质研究中的应用

采用GIS方法，对南沙群岛海区海底灾害地质进行空间叠加分析。利用模糊数学方法，对不同灾害地质因素赋予不同的模糊影响权值；运用模糊叠加模型，得到南沙群岛海区海底灾害地质综合评价图。与前人的研究工作进行对比的结果表明，GIS方法是进行海底灾害地质评价的一种有效方法。