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首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >Two-hourly surface change on supra-tidal rock (Marengo, Victoria, Australia)
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Two-hourly surface change on supra-tidal rock (Marengo, Victoria, Australia)

机译：潮上岩石每两个小时进行一次表面变化（澳大利亚维多利亚州马伦哥）

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A traversing micro-erosion meter was used to measure rock surface micro-topography over 40 cm(2) on a supra-tidal cliff face from early morning to late evening in late spring. From 06:00 hours to 22:00 hours the relative heights of 188 coordinates were obtained using the meter at 2-hour intervals, resulting in a data set of 1607 readings. Monitoring shows that rock surfaces are dynamic entities, with significant rise and fall relative to the first measurement at shorter timescales than previously reported. The maximum positive rise between readings was 0.261 mm and lowering was 0.126 mm. The pattern of change did not relate as expected to environmental variables such as temperature or insolation. Rather, the surface showed greater surface change in the early morning and late afternoon. It is hypothesized that this pattern relates to the expansion and contraction of lichen thalli as moisture is absorbed during higher humidity in the morning and late afternoon. The implications of these results for weathering studies are considered. Copyright (c) 2006 John Wiley & Sons, Ltd.
机译：从凌晨到深夜，横移式微侵蚀仪用于测量潮汐峭壁上40 cm（2）以上的岩石表面微观形貌。从06:00小时到22:00小时，使用仪表每2小时间隔获得188个坐标的相对高度，从而得到1607个读数的数据集。监测表明，岩石表面是动态的实体，相对于第一次测量，岩石表面的起伏比以前报告的要短。读数之间的最大正上升为0.261毫米，下降为0.126毫米。变化的模式与预期的环境变量（例如温度或日照）没有任何关系。相反，在清晨和傍晚，表面显示出更大的表面变化。据推测，这种模式与地衣藻的膨胀和收缩有关，因为早晨和下午较高的湿度会吸收水分。考虑了这些结果对风化研究的影响。版权所有（c）2006 John Wiley＆Sons，Ltd.

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