海洋地质与第四纪地质2024，Vol.44Issue(4)：78-87,10.DOI:10.16562/j.cnki.0256-1492.2023032301
海底峡谷浊流汇流后含沙量与速度变化研究
Variations in sediment concentration and velocity after turbidity current confluence in submarine canyon
摘要
Abstract
High-speed turbidity currents are very destructive and threaten the safety of seabed constructions.An important channel for turbidity currents to move to the deep sea is submarine canyons,of which many have multiple branches.Once a branch meets the canyon with turbidity currents,the sand content and the velocity of turbidity currents could be increased,and so the destructive power.We studied the changes in sand content and movement velocity of turbidity currents in branch canyons converging into the main canyon,to which the scenario of turbidity currents in main-canyon-only was compared.Result show that the height,sand content and velocity of turbidity currents were increased at the head when confluence occurred,and decreased after the confluence occurred.However,the sand content and the velocity were still larger than those without confluence.This study provided guidelines for site selection and velocity calculation for field monitoring when turbidity currents confluence occurs in branch canyons.关键词
海底峡谷/浊流/汇流/速度/含沙量Key words
submarine canyons/turbidity currents/confluence/velocity/sediment concentration分类
海洋科学引用本文复制引用
张子涵,任宇鹏,陶威,许国辉,靳梓堃..海底峡谷浊流汇流后含沙量与速度变化研究[J].海洋地质与第四纪地质,2024,44(4):78-87,10.基金项目
国家自然科学基金"海底峡谷弱稳定沉积物推动式剪切破坏传播及其对沉积地层的影响"(42206055),"风暴浪作用下海底高浓度含沙层形成过程的观测研究"(41976049) （42206055）
