Fluctuation of hyporheic zone thickness due to inflow and outflow across the water-sediment interface

Xunhong Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Determination of hyporheic zone thickness in streams is an important step for study of stream-aquifer interactions. Knowledge about hyporheic zone thickness is useful in stream restoration. However, because there is a lack of standard techniques for such study, evaluation of the hyporheic zone thickness for a given stream reach remains a challenge task for researchers. This paper presents Galerkin finite element flow and stream function models that can simulate the hyporheic zone thickness. The flow and stream function equations are solved for 2-D profile domains that can be across a stream or parallel to a stream. The numeral schemes for solving the flow and stream function equations and the treatment of boundary conditions are described. Hypothetical streams are used for simulation of the control of hyporheic zone thickness by the magnitude of inflow and outflow that occur at the stream-sediment interface. Groundwater flow velocity field is generated to examine the flow dynamics in hyporheic zones. The magnitude of groundwater flow velocity in hyporheic zone is greater than that of regional groundwater flow.

Original languageEnglish (US)
Title of host publicationISWREP 2011 - Proceedings
Subtitle of host publicationof 2011 International Symposium on Water Resource and Environmental Protection
Pages388-391
Number of pages4
DOIs
StatePublished - 2011
Event2011 International Symposium on Water Resource and Environmental Protection, ISWREP 2011 - Xi'an, China
Duration: May 20 2011May 22 2011

Publication series

NameISWREP 2011 - Proceedings of 2011 International Symposium on Water Resource and Environmental Protection
Volume1

Conference

Conference2011 International Symposium on Water Resource and Environmental Protection, ISWREP 2011
CountryChina
CityXi'an
Period5/20/115/22/11

Keywords

  • Hyporheic zone
  • Stream-aquifer interactions
  • numerical modeling

ASJC Scopus subject areas

  • Environmental Engineering
  • Water Science and Technology

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