KH-4B卫星数据在城镇周边活动断层解译中的应用
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摘要
地震的发生与活动断层的发育密切相关,城镇周边活动断层调查对于合理地规划城市和抗震设防、减轻城市可能遭遇的地震损失具有重要意义。遥感技术可以为活动断层调查提供快速有效的技术手段。然而,受城镇化及人类活动改造的影响,新成像的遥感数据在城镇及周边活动断层调查中发挥的作用有限;而成像于20世纪60年代的美国侦察卫星KH-4B影像较好的保存了活动断层运动形成的各种微地貌单元,这些地貌现象受人类活动改造较小。利用该卫星数据对郯庐断裂带江苏段分支之一的新沂-新店断裂进行解译研究,分析该断裂带的几何展布特征,介绍KH-4B数据在活动构造填图和定量研究中的应用,对该数据应用于活动断层的效果进行了评价,收到了良好的效果;并系统总结了一套数据处理与活动断层提取技术流程。
The earthquake is closely related to the development of active fault.Active fault survey is of great importance to city planning and anti-Seismic design for reducing the earthquake loss.Remote sensing provides fast and effective technique for the active fault survey.However,influenced by urbanization and human activities,the application of new remote sensing images used in the active fault survey is limited.The KH-4B satellite launched by the USA got images in the 1960 s and well preserved various micro geomorphic units produced by fault movement.These geomorphic units is rarely affected by human activities.These data interpreting is used the Xinyi-Xindian fault which is one of the branch fault of Tan Lu fault zone,summarize a set of data processing and active fault interpretation process,analyze the geometric distribution feature,introduce and evaluate the application of KH-4B data in active tectonic quantitative research and have a favorable effect.
引文
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