“Trends” and variations of global oceanic evaporation data sets from remote sensing   总被引：1，自引：0，他引：1  

CHIU Long S  CHOKNGAMWONG R  XING Yukun  YANG Ruixin  SHIE Chung-Lin 《海洋学报(英文版)》2008,27(3):124-135

The variability in global oceanic evaporation data sets was examined for the period 1988-2000. These data sets are satellite estimates based on bulk aerodynamic formulations and include the NASA/Goddard Space Flight Center Satellite-based Surface Turbulent Flux version 2 （ GSSTF2）, the Japanese-ocean flux using remote sensing observations （J-OFURO）, and the Hamburg Ocean-Atmosphere Parameters and Fluxes from Satellite version 2 （HOAPS2）. The National Center for Environmental Prediction （NCEP） reanalysis is also included for comparison. An increase in global average surface latent heat flux （SLHF） can be observed in all the data sets. Empirical mode decomposition （EMD） shows long-term increases that started around 1990 for all remote sensing data sets. The effect of Mt. Pinatubo eruption in 1991 is clearly evident in HOAPS2 but is independent of the longterm increase. Linear regression analyses show increases of 9.4%, 13.0%, 7. 3%, and 3.9% for GSSTF2, J-OFURO, HOAPS2 and NCEP, for the periods of the data sets. Empirical orthogonal function （EOF） analyses show that the pattern of the first EOF of all data sets is consistent with a decadal variation associated with the enhancement of the tropical Hadley circulation, which is supported by other satellite observations. The second EOF of all four data sets is an ENSO mode, and the correlations between their time series and an SO1 are 0.74, 0.71,0.59, and 0.61 for GSSTF2, J-OFURO, HOAPS2, and NCEP in that order. When the Hadley modes are removed from the remote sensing data, the residue global increases are reduced to 2.2% , 7. 3%, and 〈 1% for GSSTF2, J-OFURO and HOAPS, respectively. If the ENSO mode is used as a calibration standard for the data sets, the Hadley mode is at least comparable to, if not larger than, the ENSO mode during our study period.  相似文献   

不列颠海军欲在海洋世纪重振声威（下）     

惊涛 《海洋世界》2008,(1):71-75

捉摸不定的C1：反潜护卫舰 C1型反潜战舰是一种排水量约6000吨的多用途战舰，也称“全球护卫舰”，目前计划采购10艘。20世纪90年代中期，英国海军就提出并进行“未来护航舰”（FE）概念的研究，计划在2010年左右服役，替换22型和23型护卫舰。FE主要作为一级专业的反潜战舰，但也具备一些通用能力。到1998年时《战略防务回顾》把FE重新定义为“未来水面战舰”（FSC），当时计划采购多达20多艘。  相似文献   

青海油田开建百亿立方米天然气工程     

《河南国土资源》2008,(4):42

高原三月，位于柴达木盆地东部的台南气田呈现出一派繁忙景象。3月1日晚11时30分，由西部钻探青海钻井公司40667队承担的台4—17井顺利开钻，标志着青海油田100亿立方米天然气产能建设工程拉开帷幕。  相似文献   

O/W型TR-02稠油乳状液的配制及静态稳定性评价     

陈玉祥  ;潘成松  ;王霞  ;廖长永 《海洋地质译丛》2009,(2):51-54

针对河南油田L131井稠油,采用自制的TR-02乳化剂,根据稠油乳化降黏原理及O/W型乳状液的形成机制,研究了乳化剂的类型和含量、乳化方式、搅拌方式和搅拌速度、相体积分数等对O/W型稠油乳状液稳定性的影响,特别是初步探讨了在TR-02中加入纳米助剂TR-23,对O/W型稠油乳状液稳定性的影响,为纳米材料在稠油乳化降黏中的应用提供一个可参考的基础数据。  相似文献   

支柱型复合片钻头外圈支柱镶嵌孔位置的确定     

唐胜利 《煤田地质与勘探》1990,(4):61-64

分析了支柱复合片钻头外圈镶嵌孔位对钻头直径的影响,介绍了用数学方法求解孔位的过程。  相似文献   

PC—1500计算机在陀螺经纬仪定向中的应用     

李裕忠  李清泉 《武测科技》1990,(4):18-21,11

  相似文献   

西沙湾工程波浪推算及波浪场数值模拟          下载免费PDF全文

林毅辉  郑艺妃  潘伟然  肖征  姬厚德 《应用海洋学学报》2020,39(1):80-86

本研究根据崇武水文站1976—2007年共31 a的波浪观测资料,使用皮尔逊Ⅲ型频率曲线进行拟合分析,推算出崇武在不同重现期条件下的特征波浪要素,再将其作为外海波浪要素输入,通过基于椭圆型缓坡方程的CGWAVE近岸波浪数值模型,模拟西沙湾的重现期波浪场,得到其设计波浪要素,得到较为合理的计算结果。西沙湾的海底地形强烈地影响近岸波浪,导致了波高和波向的不均匀分布特征,岛屿和礁石都是天然屏障,东侧水域受龟屿及闽台码头的掩护,波浪反射、绕射明显,对避风坞起到了有效的保护作用。此外,对于不同地质的边界,反射系数不同使得近岸波高分布有较大差异。  相似文献   

钼镍矿床地质特征及找矿标志     

曹承清 《国土资源情报》2009,(10):33-36

本文对湘西沉积型钼镍矿床地质特征进行了总结分析，对开展湘西北地区钼镍矿找矿具有一定指导意义。  相似文献   

国土资源队伍建设的五个方向     

杜建国 《湖南地质》2009,(9):78-80

湖南省长株潭城市群被国家批准为全国建设“环境友好型”、“资源节约型”社会的综合配套改革试验区，这对地处“3＋5”城市群的湖南省益阳市来说，是一个难得的发展机遇。一是先行先试的改革机遇；二是促进区域发展的政策机遇；三是推动城市联动的合作机遇。为此，益阳市国土资源局着力打造“五个国土”，即：“效率国土、和谐国土、规范国土、满意国土、廉洁国土”。  相似文献   

The mapping methods and division of tectonic units of the regional tectonic map in the eastern China seas and adjacent regions     

YIN Yanhong  ZHANG Xunhu  WEN Zhenhe  GUO Zhenxuan 《海洋学报(英文版)》2009,28(4):57-64

The geological-geophysical map series of the eastern China seas and adjacent region (1:1 000 000) will be published in the late half year of 2009. The regional tectonic map is one of the main professional maps. The Mapping methods, the division method of geological tectonic units and the main geological tectonic units are mainly discussed. The strata from Pliocene to Holocene are peeled off so as to display the Pre-Pliocene structures. In basins, isopaches are drawn for the Cenozoic deposits. The plate tectonic theory and present tectonic pattern are adopted as the priorities in tectonic division. As to the division of intraplate tectonic units, it is a revision, complement and improvement of previous dividing systems, and the nomenclature for each tectonic unit follows the current system in China. The first-order tectonic unit is plate (Pacific Plate, Eurasian Plate and Philippine Sea Plate). The second-order tectonic unit is tectonic domain (East Asian continental tectonic domain,East Asian continental margin tectonic domain and west Pacific tectonic domain). The Philippine Sea Plate and the west part of the Pacific Plate are called the West Pacific tectonic domain. The part of the Eurasian Plate involved in this study area can be further divided into East Asian continental tectonic domain and East Asian continental margin tectonic domain. The East Asian continental margin domain is composed of the Ryukyu island arc, the Okinawa Trough back-arc basin and the back-arc basin of Sea of Japan. The East Asian continental tectonic domain in this study area is composed of the Sino-Korea Massif, the Changjiang River (Yangtze) Massif and South China Massif. In turn, these massifs consist of basins, folded belts or uplift zones. The basins,the folded belts or the uplift zones are further divided into uplifts and depressions made up of sags and swells.  相似文献