The Fluid Mechanics of Submarine Fan Morphogenesis: An Experimental Study

潜艇风扇形态发生的流体力学：实验研究

• 批准号: 9909261
• 负责人: John Southard
• 金额: --
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-05-01 至 2003-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9909261&HistoricalAwards=false
• 关键词: Fluid; Mechanics; Submarine; Fan; Morphogenesis

John SouthardEAR 9909261PI plans to continue his laboratory experiments on how turbidity currents construct submarine fans. The work is being done in a water-filled basin, 5 m by 5 m in area and 1 m deep, with a false floor onto which a suspension of silt-size glass bead sediment, at concentrations of a few percent by volume, is introduced as turbidity currents. Thirty to forty such flow events build a large submarine fan, with distinct internal stratification. As the deposit builds up, patterns of shifting channels develop on the fan. The next phase of the work will make use of more sophisticated profiling equipment to characterize in more detail the stratigraphic architecture of the deposit as a function of the flow characteristics of the turbidity currents.

约翰·索瑟尔（John SouthardEAR）计划继续他的实验室实验，研究浊流是如何形成海底风扇的。这项工作是在一个充满水的盆地中进行的，面积5米乘5米，深1米，有一个假的地板，上面悬浮着粉粒大小的玻璃珠沉积物，其体积浓度为百分之几，作为浊度流引入。30到40个这样的水流事件形成了一个巨大的海底扇，内部分层明显。随着沉积物的积累，扇上形成了移动通道的模式。下一阶段的工作将使用更复杂的剖面设备，更详细地描述沉积物的地层结构，作为浊度流流动特征的函数。