北白令海夏季冷水团的分布及其年际变化研究   总被引：7，自引：3，他引：4       下载免费PDF全文

王晓宇  赵进平 《海洋学报》2011,33(2):1-10

利用1982-2008年间的高分辨率CTD数据,对夏季位于北白令海陆架底层的冷水团性质及其多年变化进行了研究.结果表明,依据该区域水体在温盐性质上的差异可以分为4类:陆架冷水团(BSW_C),白令海陆坡流水(BSCW),混合变性水(MW),陆架表层暖水(BSW_S).以-1℃,2℃和4℃温度等值线指示水团边界,清楚地将...  相似文献   

基于Smart3D的倾斜摄影测量模拟系统三维建模   总被引：1，自引：0，他引：1  

熊强  王双亭  王晓宇  江振飞  胡倩伟  王春阳 《测绘工程》2018,(7):55-59

以河南理工大学倾斜摄影测量模拟系统为实验平台,在室内空中轨道上搭载五镜头倾斜相机,模拟室外倾斜摄影测量获取沙盘模型影像,用Smart3D软件进行空中三角测量和三维建模,用实测检查点分析模型精度。实验结果表明,利用Smart3D对倾斜摄影测量模拟系统中的沙盘模型进行三维建模是可行的,精度可以达到毫米级。  相似文献   

石化企业重大泄漏事故建模及GIS图形模拟的研究   总被引：1，自引：0，他引：1  

李宁  王晓宇 《华东地质学院学报》2005,28(3):274-277

有毒、有害物质泄漏是石化企业的重大事故,严重威胁企业和社会的安全.以石化企业乙二醇、丙烯腈装置产生的有毒、有害物质泄漏、扩散和污染范围的理论模型为根据,提出有毒、有害物质的地理信息系统（GIS）扩散图形模拟方法.通过对泄漏物质污染范围的确定,便于救援人员能够按照事故的影响范围,准确、及时的制定出救援方案,减少财产的损失.  相似文献   

1972-2013年北欧海深层水增暖   总被引：2，自引：1，他引：1  

王晓宇  赵进平  李涛  钟文理  矫玉田 《海洋学报(英文版)》2015,34(3):18-24

The warming of deep waters in the Nordic seas is identified based on observations during Chinese 5th Arctic Expedition in 2012 and historical hydrographic data. The most obvious and earliest warming occurrs in the Greenland Basin(GB) and shows a coincident accelerated trend between depths 2 000 and 3 500 m. The observations at a depth of 3 000 m in the GB reveal that the potential temperature had increased from-1.30°C in the early 1970 s to-0.93°C in 2013, with an increase of about 0.37°C(the maximum spatial deviation is 0.06°C) in the past more than 40 years. This remarkable change results in that deep waters in the center of the Lofton Basin(LB) has been colder than that in the GB since the year 2007. As for the Norwegian Basin(NB), only a slight trend of warming have been shown at a depth around 2 000 m since the early 1980 s, and the warming amplitude at deeper waters is just slightly above the maximum spatial deviation, implying no obvious trend of warming near the bottom. The water exchange rate of the Greenland Basin is estimated to be 86% for the period from 1982 to 2013, meaning that the residence time of the Greenland Sea deep water(GSDW) is about 35 years. As the weakening of deep-reaching convection is going on, the abyssal Nordic seas are playing a role of heat reservoir in the subarctic region and this may cause a positive feedback on the deep-sea warming in both the Arctic Ocean and the Nordic seas.  相似文献   

北欧海海面高度上升减缓及其机理研究     

史文奇  赵进平  连喜虎  王晓宇  陈伟斌 《海洋学报(英文版)》2017,36(8):20-33

A slowdown of sea surface height(SSH) rise occurred in the Nordic(GIN) seas around 2004.In this study,SSH satellite data and constructed steric height data for the decades before and after 2004(i.e.,May 1994 to April 2014)were used for comparative analysis.The findings indicate that the rate of slowdown of SSH rises in the GIN seas(3.0 mm/a) far exceeded that of the global mean(0.6 mm/a).In particular,the mean steric height of the GIN seas increased at a rate of 4.5 mm/a and then decreased at a slower pace.This was the main factor responsible for the stagnation of the SSH rises,while the mass factor only increased slightly.The Norwegian Sea particularly experienced the most prominent slowdown in SSH rises,mainly due to decreased warming of the 0–600 m layer.The controlling factors of this decreased warming were cessation in the increase of volume of the Atlantic inflow and stagnation of warming of the inflow.However,variations in air-sea thermal flux were not a major factor.In the recent two decades,mean halosteric components of the GIN seas decreased steadily and remained at a rate of 2 mm/a or more because of increased flow and salinity of the Atlantic inflow during the first decade,and reduction in freshwater inputs from the Arctic Ocean in the second decade.  相似文献   

海洋地质数据挖掘系统研发及在海山年龄预测中的应用     

任梦姣  孙记红  王晓宇  容伊霖  白永良 《海洋地质前沿》2023,(2):79-85

利用数据挖掘技术分析海洋地质调查数据，以获取其中隐藏信息，对推进海洋地质数据的科学高效利用具有重要意义。在模块化设计原则下，利用Python语言开发海洋地质数据挖掘相关的核心功能，利用WinForm搭建人机交互界面，并通过参数交互的方式实现了界面和后台功能间的互动。基于综合地质地球物理资料，利用软件预测了太平洋海山年龄。预测结果精度高于利用传统克里金插值方法所得结果的精度。应用结果表明，所开发软件的数据预处理、指标分析、综合评价等功能具有很好的实用性。  相似文献