On the Transverse Circulation in a Coastal Plain Estuary

滨海平原河口横环流研究

• 批准号: 9530394
• 负责人: Kamazima Lwiza
• 金额: $ 12.2万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-05-01 至 1999-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9530394&HistoricalAwards=false
• 关键词: Transverse; Circulation; Coastal; Plain; Estuary

9530394 Lwiza In this project, the PIs will study the dynamics of transverse flow in a coastal plain estuary, specifically the James River estuary in Virginia. Two parallel transects with high spatial resolution measurements will be occupied, using an Acoustic Doppler Current Profiler, and CTD casts during two tidal cycles on spring and neap tides. In addition, high temporal resolution measurements will be made with three current meter moorings at each one of the two transects and two bottom pressure recorders at either side of the estuary between the two transects. Three different dynamical regimes in the year will be addressed, namely, high river discharge (May), low river discharge (August), and the weakest vertical stratification (October). A number of objectives relating to the transverse circulation will be addressed, culminating in an evaluation of the dominant terms in the transverse momentum balance, both from the observations and from a numerical model.

9530394 Lwiza在这个项目中，PI将研究沿海平原河口的横向水流动力学，特别是弗吉尼亚州的詹姆斯河河口。利用声学多普勒流剖面仪，在大潮和小潮的两个潮汐周期中，占据两个具有高空间分辨率测量的平行断面，并进行CTD预报。此外，将在两个断面的每一个断面上进行高时间分辨率的测量，在两个断面之间的河口两侧各安装三个海流计系泊设备和两个海底压力记录器。本年度将讨论三种不同的动力机制，即高流量(5月)、低流量(8月)和最弱垂直层结(10月)。将讨论一些与横向环流有关的目标，最终从观测和数值模式两方面评估横向动量平衡中的主要项。