在各类天气系统影响下石臼港沿岸波浪场的分布     

黄爱军  李观金 《海洋预报》1994,11(3):15-25

本文查阅了从１９７３－１９８５，１３年的历史资料，对石臼港沿岸波浪场进行了详细的分类、统计分析和计算，提出了各类较强天气系统影响石（即指石臼港）的极端区域，同时获得了石港沿岸各类天气系统影响下的波浪分布特点以及波高计算式，为保障石港的生产及港口建设为石港的波了提供了有益的分析数据和预报手段。  相似文献   

深海中的河流地貌：对拉波拉多海西北大西洋洋中河道冰成海底水系的新…     

Klauc.  I 龚建明 《海洋地质前沿》1997,(1):10-12

  相似文献   

多波束数据的海底数字地形模型构建   总被引：11，自引：0，他引：11  

高金耀  金翔龙  吴自银 《海洋通报》2003,22(1):30-38

提出大批量多格式原始多波束数据的DTM构建方法，以满足大区域、大比例尺海底地形制图的需要。在多种格式原始多波束数据接口和系统内部标准数据结构的基础上，通过对数据文件、数据种类和数据运算量的有效组织管理，实施边读入、边权重配赋的网格插值，分析了高斯、指数和距离平方反比权重函数的适用性，及最小值、最大值和平均值的实用性。在权重配赋网格插值基础上，提出分形fBM和张力样条配合使用的方程式插值方法，保证DTM数据的有效外延和地形分辨。整套算法效率高，并能有效保证DTM的精度，对存储在外部介质的数据遍历一次即可完成网格插值。  相似文献   

Observation of clouds and solar radiation over the Pacific Ocean as relation to global climate     

Farn Parungo  Clarence Nagamoto  Cecilia M. I. R. Girz  Jeff Torgerson  Zhou Mingyu 《海洋学报(英文版)》1995,14(2):201-207

ＯｂｓｅｒｖａｔｉｏｎｏｆｃｌｏｕｄｓａｎｄｓｏｌａｒｒａｄｉａｔｉｏｎｏｖｅｒｔｈｅＰａｃｉｆｉｃＯｃｅａｎａｓｒｅｌａｔｉｏｎｔｏｇｌｏｂａｌｃｌｉｍａｔｅ￥ＦａｒｎＰａｒｕｎｇｏ；ＣｌａｒｅｎｃｅＮａｇａｍｏｔｏ；ＣｅｃｉｌｉａＭ．Ｉ．Ｒ．Ｇｉ...  相似文献   

The influence of salinity on the heat-shock protein response of Potamocorbula amurensis (Bivalvia)   总被引：1，自引：0，他引：1  

Werner I 《Marine environmental research》2004,58(2-5):803-807

For biomarkers to be useful in assessing anthropogenic impacts in field studies involving aquatic organisms, they should not be affected by naturally occurring changes in environmental parameters such as salinity. This is especially important in estuarine environments and for relatively unspecific biomarkers like heat-shock proteins (hsps, stress proteins). In this study, the heat-shock protein response was measured in the euryhaline clam, Potamocorbula amurensis, after exposure to a range of salinities reflecting normal and extreme environmental conditions in Northern San Francisco Bay, California. The ability to raise cellular hsp70 levels in response to heat-shock was significantly impaired in P. amurensis collected from a low (0.5 ppt) salinity field site, and after 14 day exposure to low salinity in the laboratory.  相似文献   

Fatal attraction: synthetic musk fragrances compromise multixenobiotic defense systems in mussels     

Luckenbach T  Corsi I  Epel D 《Marine environmental research》2004,58(2-5):215-219

We studied interactions of nitromusk compounds musk ketone and musk xylene and polycyclic musks Galaxolide trade mark (HHCB), Celestolide trade mark (ADBI), Tetralide trade mark (AHTN), and Traseolide trade mark (AITI) with multixenobiotic resistance (mxr) transporters in gill tissue of the marine mussel Mytilus californianus (Conrad, 1837). A competitive substrate transport test with rhodamine B was used to assay modulation of transport activity by musks. All tested musks inhibited the transport activity in the low microm range as indicated by increased accumulation of rhodamine B in the tissue. Compared to known substrates of mxr transporters, the effective concentration range was similar to quinidine and about 100 times higher than verapamil. Musk ketone and musk xylene also inhibited efflux of rhodamine B from gill tissue which was loaded with the dye and subsequently incubated with these compounds. Synthetic musk compounds are persistent environmental pollutants in aquatic environments with a high potential to bioaccumulate. As potent inhibitors of mxr transporters they may also play a role as chemosensitizers that enable toxic mxr substrates to accumulate in cells of aquatic organisms.  相似文献   

东海大陆架地磁场与地质构造的初步研究     

金翔龙  喻普之 《海洋科学》1979,3(S1):94-96

  相似文献   

Use of suppressive subtractive hybridization and cDNA arrays to discover patterns of altered gene expression in the liver of dihydrotestosterone and 11-ketotestosterone exposed adult male largemouth bass (Micropterus salmoides)     

Blum JL  Knoebl I  Larkin P  Kroll KJ  Denslow ND 《Marine environmental research》2004,58(2-5):565-569

In this study male largemouth bass (LMB) were exposed to the naturally occurring androgens, dihydrotestosterone (DHT) or 11-ketotestosterone (11-KT) in order to identify genes that are differentially regulated by these steroid hormones. Using subtractive hybridization on livers of fish treated with DHT against vehicle control, many novel LMB genes were cloned. These genes were added to our gene library and arrayed. Six genes were up-regulated and five were down-regulated by both androgens. But, each androgen also regulated specific genes. One gene that was identified as a potential androgen marker was spermidine-spermine-N(1)-acetyltransferase that was up-regulated by both androgens. Determining which genes are responsive to natural androgens will help to identify biochemical pathways that are impacted.  相似文献   

中太平洋海山群漂移史及其来源   总被引：1，自引：0，他引：1  

赵俐红  高金耀  金翔龙  章家保 《海洋地质与第四纪地质》2005,25(3):35-42

中太平洋海山群的海山呈簇状排列且近EW向展布于太平洋海山密集区，其四周分布着一系列NW走向的线性列岛及规模巨大的水下海山链。它位于明显属于海山链构造的夏威夷群岛和马绍尔群岛之间，处于莱恩群岛的北西向延伸方向上，与热点作用的板内火山作用关系密切。结合前人对中太平洋海山群形成和漂移的认识，从板块运动和几何学角度出发，采用Backtracking和Hot-spotting海山追踪方法对该区海山进行了追踪，发现该区海山的热点源主要位于现今法属玻利尼西亚群岛区（法属玻利尼西亚热点群），这与前人从古地磁和钻探资料出发得到的结果相接近。研究表明，中太平洋海山群是多热点成因的板内火山作用和板块构造运动的共同产物，它在130～90Ma期间起源于法属玻利尼西亚热点群，曾随着太平洋板块发生过向南和向北的运动，既有水平方向的漂移又有垂直方向上的升降，在漂移和升降过程中还受到了当时大规模多期的热点活动和断裂活动的改造作用，经过一个漫长的过程后才到达今天的位置，最后形成了现今呈簇状分布的海山群。  相似文献   

数字地图出版原图审校工作的探讨     

金云和  陈光建  肖振华  温振华 《海洋测绘》2003,23(6):45-46

通过新旧对照，对地图出版质量控制的方法进行了探讨，并结合数字技术下纸质地图集的生产实践，介绍了如何做好原图质量控制有关工作的几点体会。  相似文献