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一种基于水深梯度原理的海底滑坡快速识别方法——以南海北部陆坡白云深水区为例

周庆杰 李西双 徐元芹 刘乐军 高珊 周航 李天光

周庆杰, 李西双, 徐元芹, 刘乐军, 高珊, 周航, 李天光. 一种基于水深梯度原理的海底滑坡快速识别方法——以南海北部陆坡白云深水区为例[J]. 海洋学报, 2017, 39(1): 138-147. doi: 10.3969/j.issn.0253-4193.2017.01.015
引用本文: 周庆杰, 李西双, 徐元芹, 刘乐军, 高珊, 周航, 李天光. 一种基于水深梯度原理的海底滑坡快速识别方法——以南海北部陆坡白云深水区为例[J]. 海洋学报, 2017, 39(1): 138-147. doi: 10.3969/j.issn.0253-4193.2017.01.015
Zhou Qingjie, Li Xishuang, Xu Yuanqin, Liu Lejun, Gao Shan, Zhou Hang, Li Tianguang. A rapid method to recognize submarine landslides based on the principle of water depth gradient: A case of Baiyun deep-water area, north slope of the South China Sea[J]. Haiyang Xuebao, 2017, 39(1): 138-147. doi: 10.3969/j.issn.0253-4193.2017.01.015
Citation: Zhou Qingjie, Li Xishuang, Xu Yuanqin, Liu Lejun, Gao Shan, Zhou Hang, Li Tianguang. A rapid method to recognize submarine landslides based on the principle of water depth gradient: A case of Baiyun deep-water area, north slope of the South China Sea[J]. Haiyang Xuebao, 2017, 39(1): 138-147. doi: 10.3969/j.issn.0253-4193.2017.01.015

一种基于水深梯度原理的海底滑坡快速识别方法——以南海北部陆坡白云深水区为例

doi: 10.3969/j.issn.0253-4193.2017.01.015
基金项目: 基本科研业务费专项资金——近50年来广西大陆岸线变迁及其与人类活动的关系(2014G05);国家自然科学基金——南海北部陆坡峡谷区海底滑坡体的识别与年代界定研究(41506071);国家重大科技专项——荔湾3-1及周边气田地质灾害风险评价研究(2011ZX05056-001-02)。

A rapid method to recognize submarine landslides based on the principle of water depth gradient: A case of Baiyun deep-water area, north slope of the South China Sea

  • 摘要: 如何快速而准确的识别并提取海底滑坡的特征形态信息一直是海洋工程地质、特别是深水工程地质评价中所关注的问题之一。本文根据滑坡后形成的地形形态,基于水深梯度求值运算的原理,通过Matlab编程建立了一种快速识别海底滑坡的方法。以南海北部陆坡白云深水区为例进行海底滑坡的识别,并利用浅地层剖面做验证,结果显示这一方法是可行的,其最大的优点是滑坡识别速度快,对于规模小且数量多的滑坡识别效率较高。通过实测数据进一步的分析表明:(1)阈值的选取对识别结果有明显影响,阈值的选取需要结合其他物探资料(如浅地层剖面和声呐影像)综合判断来确定;(2)水深数据的空间分辨率会影响滑坡识别结果的准确度,合适的空间分辨率会提高识别结果的准确性。
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出版历程
  • 收稿日期:  2016-05-17
  • 修回日期:  2016-07-07

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