Characteristics of ocean bottom roughness for several seamounts derived from multibeam bathymetric data

OCEANS '85 - Ocean Engineering and the Environment Pub Date : 1900-01-01 DOI:10.1109/OCEANS.1985.1160246

M. Czarnecki, J. Bergin

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Abstract

Multibeam bathymetric systems offer to revolutionize our understanding of the ocean bottom and its major structural features by providing highly detailed measurements of the bottom. Further, multibeam measurements yield bottom depth as a function of both spatial coordinates (i.e. along-track and across-track). The depth resolution is sufficiently fine that conventional contour charts would never incorporate all the information available in the multibeam data. As an alternative to such deterministic presentations, it can be suggested that statistical characterizations be developed for topographic variability at horizontal scales which are small in comparison to the overall dimensions of the feature of interest. We here discuss the study of rough topography on several seamounts by means of multibeam bathymetry. The bottom topography is analyzed in terms of numerous samples of1600 m \times 1600m extent. A primary quantity of interest is the rms value of the residual topography. The pattern of variability for the rms values is described for several seamounts and shown to have certain overall similarities.

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基于多波束测深数据的若干海山海底粗糙度特征

多波束测深系统通过提供非常详细的海底测量，彻底改变了我们对海底及其主要结构特征的认识。此外，多波束测量产生底部深度作为空间坐标(即沿轨道和跨轨道)的函数。深度分辨率足够精确，传统的等高线图永远无法包含多波束数据中可用的所有信息。作为这种确定性表示的替代方案，可以建议在水平尺度上为地形变异性开发统计特征，这些尺度与感兴趣的特征的总体尺寸相比很小。本文讨论了用多波束测深法研究几种海底山的粗糙地形。根据1600米× 1600米范围的大量样品分析了底部地形。最重要的是残差地形的均方根值。对几个海山的均方根值的变率模式进行了描述，并显示出一定的总体相似性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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OCEANS '85 - Ocean Engineering and the Environment

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