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Ahmad Tavakoly May 05 2009

University of Texas at Austin. Investigation of wave celerity ( c ) variations with time and space in Guadalupe and San Antonio River Basins. Ahmad Tavakoly May 05 2009. Overview. Introduction Project Goal Field of Study Data Source Method Results. Introduction.

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Ahmad Tavakoly May 05 2009

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  1. University of Texas at Austin Investigation of wave celerity (c) variations with time and space in Guadalupe and San Antonio River Basins Ahmad Tavakoly May 05 2009

  2. Overview • Introduction • Project Goal • Field of Study • Data Source • Method • Results

  3. Introduction The wave celerity is the velocity with which a wave travels along the channel or river Distance Traveled Wave Celerity Model L Wave Celerity C = T Travel Time

  4. Project Goals • Estimate the wave celerity in different reaches • Find celerity within different times • Create celerity map

  5. Field of Study San Antonio and Guadalupe River Basins Guadalupe Rv. Medina Rv. San Antonio Rv.

  6. Data Source 15 minutes data intervals 2007-01-01 to 2007-06-30 2004-01-01 to 2004-06-30 http://ida.water.usgs.gov/ida/

  7. Data Source http://www.horizon-systems.com/nhdplus/HSC-wth12.php

  8. Method • Determine distance between upstream and downstream gages (ArcGIS) • Find time lag corresponding to the max correlation (HW4 Method) Length Celerity= Time lag

  9. Method Determine distance

  10. Method Analysis of lag cross correlation between gages Lagged Cross Correlation method Gonzales

  11. Results Celerity for different time and gages

  12. Results Celerity for different time and gages Analyzed More than 500,000 Data Points

  13. Results

  14. Results

  15. Results

  16. Conclusion Upstream + - Uncertainty Celerity Downstream

  17. Question????

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