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Evolution of sand waves in the Messina Strait, Italy

机译：意大利墨西拿海峡沙波的演变

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摘要

In the present paper the morphodynamics of sand waves in the Messina Strait, Italy, is analysed by comparing data gathered during two different surveys carried out in 1991 and 2001, respectively. In particular, a morphometric analysis on the most recent data and a qualitative analysis of the differences between bottom bedform patterns, are carried out. At locations characterised by greater depths, only minor changes to the planimetric configuration of the field, i.e. crest orientation (which is seen to be orthogonal to the direction of net gross sand transport) and wave length are observed, while differences in wave length and crest direction are more evident in more shallow areas. On the other hand, wave height has significantly increased in the whole field. A possible explanation of such a change, based on the previsions of a theory which relates sand-wave growth and migration to the main components of the tidal ellipse, is provided.
机译：本文通过比较分别在1991年和2001年进行的两次调查收集的数据来分析意大利墨西拿海峡的沙波形态动力学。特别是，对最新数据进行了形态计量分析，并对底部床形图案之间的差异进行了定性分析。在以较大深度为特征的位置，仅观察到田野的平面结构发生了微小变化，即波峰方向（被视为与净砂传输的正交方向）和波长，而波长和波峰之间存在差异方向在较浅的区域更明显。另一方面，在整个领域中，波高显着增加。基于将沙波的生长和迁移与潮汐椭圆的主要成分相关的理论的前提，提供了这种变化的可能解释。

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  • 来源
    《Ocean Dynamics》 |2004年第4期|p. 392-398|共7页
  • 作者

    Vincenza Cinzia Santoro; Elena Amore; Luca Cavallaro; Massimo De Lauro;

  • 作者单位

    Department of Civil and Environmental Engineering, University of Catania, Viale A. Doria, 6, 95125 Catania, Italy;

    Department of Civil and Environmental Engineering, University of Catania, Viale A. Doria, 6, 95125 Catania, Italy;

    Department of Civil and Environmental Engineering, University of Catania, Viale A. Doria, 6, 95125 Catania, Italy;

    Institute for Coastal Marine Environment, CNR, Calata Porta di Massa –, 80133 Naples, Italy;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 地球物理学;
  • 关键词

    Bedforms; Sand waves; Morphodynamics; Morphometric analysis;

    机译：床形;沙波;形态动力学;形态计量学分析;

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