modelos hidrologicos: runoff pedro ribeiro de andrade gilberto camara
DESCRIPTION
Brazil 2000 Espinhaço RangeTRANSCRIPT
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Modelos Hidrologicos: Runoff
Pedro Ribeiro de AndradeGilberto Camara
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How can geospatial data feed CA models?
Grid of cells Neighbourhood Finite set of discrete states Finite set of transition rules Initial state Discrete time
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Brazil 2000 Espinhaço Range
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Minas Gerais State 2000
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View
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Pico do Itacolomido Itambé
Serra do Lobo
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Pico do Itacolomido Itambé
Serra do Lobo
9 km
9 km
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rainrain rain
N
Pico do Itacolomi do Itambé
Serra do Lobo
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A very simple runoff model
Grid of cells Neighbourhood Finite set of discrete states Finite set of transition rules Initial state Discrete time
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Acessing a cell space in a database
host = "gis-bigdata.uni-muenster.de”user = "terraview", password = "terralib”database = “cabeca”
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cells = CellularSpace { dbType = "mysql", host = "gis-bigdata.uni-muenster.de",
database = "cabeca", user = "terraview", password = "terralib", theme = "cells90x90", select = {"height_ as height",
"soilWater"}, autoload = true}
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Grid of Cells – Height
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Initial state – Rain in the heighest cells
1000mm of rain in the cells above 200m height
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Neighborhood – based on height
48 34
30
21
37
33
34
25
23
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Neighborhood – based on height
48 34
30
21
37
33
34
25
23
Note that the process takes place in parallel in space
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States and transitions
Dry Wet
What is the behavior of each state? Are both states necessary?
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Relaxing cellular automata definitions
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Questions
How to verify whether the model is correctly implemented?
What are the limitations of this model?