Influence of bathymetric changes on hydrodynamics and salt intrusion in estuarine system

Wen Cheng Liu, Ming Hsi Hsu, Albert Y. Kuo, Ming Hsu Li

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


A vertical (laterally integrated) two-dimensional numerical model has been applied to study the hydrodynamic characteristics and salt water intrusion in the Tanshui River estuarine system. The cross-sectional profiles measured in 1978 and 1994 are schematized for model simulations. Detailed model calibration and verification have been conducted with water surface elevations, tidal current, salinity distributions, and residual velocities measured. The overall performance of the model is in qualitative agreement with the available field data. The model was then used to study how hydrodynamics and salt water intrusion change in response to changes in bathymetry. The model simulations indicate that more tidal energy propagates into the estuarine system in 1994 because of the substantial increase in river cross-sections. The limits of salt intrusion in 1994 extended farther inland than those in 1978. On the other hand, the extent of mangrove wetland in the lower estuary has increased over the past 20 years and is likely a result of the increased salinity in the estuary.

Original languageEnglish
Pages (from-to)1405-1416
Number of pages12
JournalJournal of the American Water Resources Association
Issue number5
StatePublished - 2001


  • Bathymetric variation
  • Hydrodynamics
  • Numerical model
  • Salt water intrusion
  • Wetland


Dive into the research topics of 'Influence of bathymetric changes on hydrodynamics and salt intrusion in estuarine system'. Together they form a unique fingerprint.

Cite this