西太平洋海域海山地形分形特征研究  

Fractal Research on Seamount Topography in the West Pacific Ocean

作　　者：章伟艳[1] 张富元[1] 朱克超[2] 杨克红[1] 胡光道[3] 程永寿[4] 李守军[1] 赵宏樵[1] 

机构地区：[1]国家海洋局第二海洋研究所国家海洋局海底科学重点实验室,浙江杭州310012 [2]国土资源部广州海洋地质调查局,广东广州510760 [3]中国地质大学数学地质遥感地质研究所,湖北武汉430074 [4]国家海洋信息中心,天津300171

出　　处：《现代地质》2009年第6期1138-1146,共9页Geoscience

基　　金：中国大洋协会"十一五"资助项目(DYXM115-01-1-06);科学技术部资助项目(2006FY220400);国家海洋局第二海洋研究所基本科研业务费专项资金项目(JG0709);浙江省自然科学基金项目(Y506145)

摘　　要：对太平洋麦哲伦海山区、威克—马尔库斯海山区、马绍尔群岛、中太平洋海山区及莱恩群岛5个海山区的平顶海山与尖顶海山地形进行分形研究,结果表明两种类型海山地形具有不同的分形特征。海山形态投影覆盖法揭示平顶海山具有单分形的大尺度构造分形,尖顶海山具有大尺度构造分形和小尺度结构分形的双分形结构。海山等高线尺度法分形结果显示,同一海山区平顶海山分维值小于尖顶海山的;同一海山不同高程段等高线分维值基本保持稳定,垂向上具有明显的分段性,可以参考并使用它进行地貌垂向分带。On the basis of fractal research on the pointy seamount and guyot topography of Magellan seamounts, Wake-Marcus seamounts, Marshall Islands, Mid-Pacific Mountains and Lines Islands in the west Pacific Ocean, it is indicated that the different terrains of volcano shape type should display the different fractal characteristics. The fractal research on terrain shape shows that the guyot has the single fractal structure and the seamount has the muhifractal structure. The muhifractal of the seamount mainly shows the great tectonic fractal and the small texture fractal, and the application of fractal dimension is demonstrated for quantitative characterization of the Pacific seamount topography roughness. The contour fractal shows that there are obvious several subsections of contour fractal which basically retains stable, possibly because the different geological processes on the different depths of the seamount have developed. It is possibly used to carry on vertical zoning of the geomorphic process. The fractal dimension of guyot is smaller than that of pointy seamount in the same seamounts.

关 键 词：太平洋 海山地形 钴结壳 分形 

分 类 号：P737.2[天文地球—海洋地质]