东海地区砂石料供给现状

东海地区 ,特别是以名古屋为中心的中京地区是仅次于京浜、阪神等的工业、人口密集地区 ,由于各种产业和基础设施建设的需要 ,也是巨大的（混凝土）砂石料消费地。主要用来自浓尾平原边缘地带的河流沙、陆地沙和山地沙以及平原周围山地、丘陵地带的中古生代砂岩、页岩碎石来满足这里的砂石料需求。１沙资源概况日本经济规划厅给各县分发了土地分类图（２０００００∶１） ,我们以其中的表层地质图为基础编制了东海地区沙资源分布图 ,以对这些地方的沙资源赋存状况进行研究。沙资源图中标明了各地区地表至１０～１５ｍ深度地质柱状图中的沙、…     

科技兴海取得重大成果

2002年是国家海洋府的海洋行政管理年。全局上下在认真完成海洋科技管理工作的同时,积极开拓,谋求发展,全面完成了各项科研任务,取得了一批重要成果。     

实施四大转移 凸现特色优势 发展海洋经济加快小康进程

柘汪镇位于赣榆最北端,西北与山东省临沂、日照接壤,全镇现有沿海村8个,2万余人。境内海岸线长11.8千米,滩涂面积4.2万亩,潮上带1.2万亩,潮间带3万亩,有渔船510条,总吨位13700吨,总功率达49600马力。全     

A Numerical Study on the Structure and Dynamics of Turbulence in Oscillatory Bottom Layer Flow over A Flat or Rippled Bed

1 .IntroductionUnder the influence of surface waves ,sandripples often appear on beaches . Whenthe amplitudeof water oscillationis sufficientlylarge ,vortices are formed onthe lee of every sand ripple crest . A-mongthese vortices ,the most important are t…     

Multifractal filtering method for extraction of ocean from remotely sensed imagery

Traditional methods of extracting the ocean wave eddy information from remotely sensed imagery mainly use the edge detection technology such as Canny and Hough operators. However, due to the complexities of ocean eddies and image itself, it is sometimes difficult to successfully detect ocean eddies using these methods. A mnltifractal filtering technology is proposed for extraction of ocean eddies and demonstrated using NASA MODIS, SeaWiFS and NOAA satellite data set in the typical area, such as ocean west boundary current. Results showed that the new method has a superior performance over the traditional methods.