Ice floe distribution in the Sea of Okhotsk in the period when sea-ice extent is advancing
Ice floe distribution in the Sea of Okhotsk in the period when sea-ice extent is advancing
复制标题
DOI：
10.1029/2004gl020809
复制
发表时间：
2004-10-19
影响因子：
5.2
通讯作者：
Fujiyoshi, Y
中科院分区：
文献类型：
--
作者：
Inoue, J;Wakatsuchi, M;Fujiyoshi, Y
通过分析2000年2月18日由飞机观测获得的数千张海冰图像，研究了冷空气爆发期间鄂霍次克海的浮冰分布。在边缘冰区（MIZ）内，有效浮冰尺寸变小（从10 m到2 m）。絮凝物分布的标度特性由一个累积数频率来表示，它遵循指数为a的幂律标度。a值从内冰区内的1.5增加到MIZ内的2.1，这意味着MIZ内主要是相对较小的浮冰。由波衰减理论估计的MIZ的有效宽度与观测到的宽度一致，这表明，弯曲应力的波穿透到冰是一个可能的机制，导致的缩放属性的差异。
Ice floe distribution in the Sea of Okhotsk during a cold-air outbreak was investigated by analyzing several thousand of sea-ice images obtained by the aircraft observation on 18 February in 2000. The effective floe size became small ( from 10 m to 2 m) within the marginal ice zone (MIZ). The scaling properties of floe distribution are demonstrated by a cumulative number frequency which follows a power law scaling with an exponent a. The value of a increased from 1.5 within the internal ice zone to 2.1 within the MIZ, which means that relatively small ice floes dominate in the MIZ. The effective width of the MIZ estimated by a wave attenuation theory agreed with the observed width, suggesting that the flexural stress of waves penetrating into the ice is one of the possible mechanisms which cause the difference in the scaling property.