尚文亮,徐少华,李小刚,秦磊,杨丽玉,刘家恺,姚雪婷.浅述深水水道的形态学特征[J].地质找矿论丛,2020,35(2):204-209
浅述深水水道的形态学特征
Brief introduction to morphological characteristics of deep-water channels
投稿时间:2019-10-09  
DOI:10.6053/j.issn.1001-1412.2020.02.010
中文关键词:  深水沉积  水道类型  形态学  曲率
英文关键词:deep water channel  channel type  shape  curvature
基金项目:国家自然科学基金项目(编号:41902114)、重庆科技学院大学生科技创新训练计划项目(编号:2019008)联合资助。
作者单位E-mail
尚文亮 重庆科技学院石油与天然气工程学院, 重庆 401331
复杂油气田勘探开发重庆市重点实验室, 重庆 401331 
 
徐少华 重庆科技学院石油与天然气工程学院, 重庆 401331
复杂油气田勘探开发重庆市重点实验室, 重庆 401331 
xsh_xu@163.com 
李小刚 重庆科技学院石油与天然气工程学院, 重庆 401331
复杂油气田勘探开发重庆市重点实验室, 重庆 401331 
 
秦磊 重庆科技学院石油与天然气工程学院, 重庆 401331
复杂油气田勘探开发重庆市重点实验室, 重庆 401331 
 
杨丽玉 重庆科技学院石油与天然气工程学院, 重庆 401331
复杂油气田勘探开发重庆市重点实验室, 重庆 401331 
 
刘家恺 重庆科技学院石油与天然气工程学院, 重庆 401331
复杂油气田勘探开发重庆市重点实验室, 重庆 401331 
 
姚雪婷 重庆科技学院石油与天然气工程学院, 重庆 401331
复杂油气田勘探开发重庆市重点实验室, 重庆 401331 
 
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中文摘要:
      目前深水水道的分类方案较多,本文基于深水水道的形态学特征,且聚焦于单一型深水水道,将其划分为顺直型(曲率介于1~1.25)、低弯度S型(曲率介于1.25~1.5)和高弯度S型(曲率>1.5)。其中,顺直型水道侵蚀作用最强,往往不发育天然堤沉积,无侧向加积;低弯度S型水道发育天然堤,并具有侧向加积;高弯度S型天然堤及侧向加积最为发育,决口扇常与之伴生。深水水道的曲率是水道形态的直观表现,曲率大小主要受深水地貌即深水地形坡度的影响。在上陆坡区域,地形坡度较大,沉积物能量强,深水水道以顺直型为主。中陆坡区域,随着地形坡度的减缓,水道的弯曲形态也逐渐增加,形成低弯度S型,直至下陆坡,水道演变为高弯度的S型。
英文摘要:
      At present, there are many classification schemes for deep water channels. This paper is based on morphological characteristics of deep water channels and focuses on a single type of deep water channel which is furtherly divided into straight-type (curvature between 1-1.25), low-s-type (curvature between 1.25-1.5) and high-s-type (curvature>1.5). The straight-type channel has the strongest erosion characteristics without natural levee deposition and lateral accretion. Low-s-type channel is develped with the levee deposition and lateral accretion. And high-s-type channe lis mostly developed with levees and lateral accretion and often ccompanied by crevasse fan. The curvature of the channel is the direct manifestation of the shape of channel is mainly affected by the deep-water topographic feature. In the upper continental slope area, the slope is steep with strong sediment energy the channel is mainly straigh type, in the middle area, the slope become gentle, the low-s-type dominant, in the lower slope, and the channel evolves into a high-curvature s-type.
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