浙江东部潮汐通道地区水下滑坡的类型及特征

在分析潮汐通道地区水下滑坡的区域环境的基础上 ,对水下滑坡的分类、结构特征、发育规模和形成时代进行了研究。结果表明 ,本区内的滑坡依据形态特征可以划分为整体性滑坡和破碎性滑坡两类 ,整体性滑坡占绝对优势。多数滑坡具有曲线型滑动面和多级性的特征 ,且绝大多数滑坡发生在全新统中。与陆坡和陆架的其它地区相比 ,因受通道空间的限制 ,研究区滑坡的发育规模相对较小 ,具有与陆上滑坡相似的特征。

Classification and features of subaqueous landslide in the tidal channel region off Zhejiang Province

Based on the analysis of regional environment conditions of the tidal channel region off Zhejiang Province, detail studies are carried out on the classification, structure features, dimensions and forming time of subaqueous landslides. The results suggest that the subaqueous landslides in this area can be classified as nondisintegrative failures and disintegrative failures according to the form features. The nondisintegrative failures are dominant in the study area and most landslides are characterized by curved slide surface and multi\|landslides developed in Holocene. The dimensions of the landslides in this study area are smaller, because of the narrow space in the tidal channel, compared with those in continental slopes and other regions of continental shelf. These subaqueous landslides have similar features to those on land.