辽东湾近岸堆积冰表面形态特征分析

Analysis Sea Ice Topography along a Beach in the Liaodong Gulf

2005年1月在辽东湾盘锦市附近的海滨进行了堆积冰表面形态的现场调查。使用全站仪测量了5条不同起伏程度的堆积冰表面轮廓剖面,利用表面起伏高度数据和表面轮廓线在平均高度处的切角数据分析了堆积冰表面形态特征。对堆积冰区内的3个冰脊进行了内部层状结构观测,外部破碎冰块尺寸测量和1个冰脊涨、落潮时表面高度变化测量。利用这些数据,描述了冰脊内的分层结构;统计分析了冰脊外表层的破碎冰块尺寸并得到描述它们的主要参数值。此外,对冰脊涨、落潮时的表面形态进行了三维仿真绘图并计算了其表面形态参数。

Piled up ice topography investigation has been performed along a beach near Panjin City, Liaodong Gulf, Bohai, in January, 2005. Five piled up ice surface profiles in different elevation grades have been measured using Electronic Total Station. The topography property of piled up ice has been characterized according the surface elevation data and the calculation results of the tangent angle on the mean elevation high lever of piled up ice surface profiles. For three ice pile-ups, Samdwich structures inside and sizes of broken ice pieces around them have been measured also. In addition, the variety of surface elevation in tide increasing and in tide decreasing for one ice pile-up among them has been measured. Based on these field data, the inner structure of ice pile-up has been analyzed; the primary parameters describing the broken ice pieces size distribution have been extracted; the surface topography of ice pile-up in both tide increasing and tide decreasing has been three-dimensional emulationally plotted and analyzed for the topography parameters of them.