use of raingauges network data in the short term prediction of urban pluvial floods
Download
Skip this Video
Download Presentation
Use of raingauges network data in the short term prediction of urban pluvial floods

Loading in 2 Seconds...

play fullscreen
1 / 14

Use of raingauges network data in the short term prediction of urban pluvial floods - PowerPoint PPT Presentation


  • 112 Views
  • Uploaded on

Use of raingauges network data in the short term prediction of urban pluvial floods. Methods of interpolation Cloud tracking Future Work : radar images & Flood modelling. Maureen Coat ENSTA Paristech. Rainfall Data. Database available : 88 Raingauge Stations

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Use of raingauges network data in the short term prediction of urban pluvial floods' - elkan


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
use of raingauges network data in the short term prediction of urban pluvial floods

Use of raingauges network data in the short termprediction of urban pluvial floods

Methods of interpolation

Cloud tracking

Future Work : radar images & Flood modelling

Maureen Coat

ENSTA Paristech

rainfall data
Rainfall Data
  • Databaseavailable :
                  • 88 Raingauge Stations
                  • Rainfall Rate every 30 min
                  • Between 06/06/2006 and 19/10/2009
slide4

Code in SQL , easyselection of rainfall rate:

                  • Atany date
                  • Atany time
                  • In London
  • Only a discrete set of data…
  • But rainfallis a continuousphenomenon
  • => Interpolation in regulargridcells
methods of interpolation
Methods of interpolation
  • Manymethodsexist :
                  • Inverse Distance Weight
                  • Liska’sMethod
                  • Polygone of Thiessen
  • The more efficient : KrigingMethod :
                  • Designed for geophysical variables with a continuous distribution
                  • Based on statistics
                  • => Many data are required (Database)
                  • WithMatlab
cloud tracking
Cloud Tracking ?
  • The 07/07/2009 : Flash flood in London
  • Victoria Station , Edgware road, and Paddington have been evacuated
slide8

Rainfall Rate (mm/h) in London (07/07/2009) :

Victoria Station

Latitude : 51.5104444 Longitude : 0.1872222

future work comparison with radar images
Future work :Comparisonwith radar images
  • Weather radar :
                  • Estimated rainfall rates are derived indirectly from measurements of reflectivity
                  • => subject to a combination of systematic and random errors
                  • Conditional Merging ?

Flood modelling :

  • Bemus (Belgrade Model of UrbanSewers) :
  • Rainfall Data is in Input
                  • Influence of intensity
                  • Influence of interpolation Method
ad