IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
Log On
About IAHRDirectoryCommitteesMy IAHRNews & JournalseLibraryeShopEventsJoin IAHRWorld CongressDonate
spacer.gif
spacer.gif eLibrary
spacer.gif eLibrary
You are here : eLibrary : IAHR World Congress Proceedings : 34th Congress - Brisbane (2011) : THEME 2: Coastal Hydraulics: Form and Function : Mechanism of water exchange at the sediment-water interface in a tidal estuary
Mechanism of water exchange at the sediment-water interface in a tidal estuary
Author :
Tidal variations of groundwater salinity and seepage flow through a stream bed were observed in a tidal estuary. The processes of fresh water intrusion and salinity recovery in the estuarine bed due to floods were analyzed using observed data in relation to the circulation between stream water and a wide-area groundwater table. The seepage flow varies with tidal variations of the stream stage on the order of 10-3 cm/s, whereas the groundwater salinity decreases only at the surface of the estuarine bed. Fresh water intrusion to the estuarine bed during flooding depends on the seepage flow caused by the hydraulic gradient between the stream stage and the wide-area groundwater table, and the fresh water intrudes into the estuarine bed during flooding to a depth twice that of tidal intrusion during non-flood events.
File Size : 327,823 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 2: Coastal Hydraulics: Form and Function
Date Published : 01/07/2011
Download Now