关键词: 太平洋, 海山地形, 钴结壳, 分形

Abstract:

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 multifractal structure. The multifractal 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.

Key words: Pacific, seamount topography, cobalt crust, fractal