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Assessing the applicability of hydrologic information from radar imagery

François De Troch UGent, Niko Verhoest UGent, Valentijn Pauwels UGent and Rudi Hoeben UGent (2003) NATO Science Series IV Earth and Environmental Sciences. 23. p.201-210
abstract
During the last two decades, the potential of radar remote sensing in the retrieval of the water content of the near-surface unsaturated soil zone has been explored. This water content is usually referred to as soil moisture. The inversion of radar observations into soil moisture values has been hampered by an insufficient characterization of the soil toughness. However, some studies have focused on relating temporal changes of the radar signal to hydrologic relevant information. One result is presented here, where we show that variable source areas, which are mainly responsible for runoff in a catchment, can be visualized through a principal component analysis. A second part of this paper shows how soil moisture information obtained from radar imagery can be incorporated into hydrologic models. A first example uses an extended Kalman filtering technique, which adjusts the state variables from a hydrologic model. Through this technique, one-dimensional soil moisture profiles are retrieved with high accuracy. In a second example, we show a data-assimilation method which uses both the statistics and the spatial distribution of radar-retrieved soil moisture values, to adjust the modeled soil moisture profile. This methodology enables a better modeling of the rainfall-runoff behavior of the catchment.
Please use this url to cite or link to this publication:
author
organization
year
type
conference
publication status
published
subject
keyword
ATMOSPHERE TRANSFER SCHEME, ENERGY-BALANCE PROCESSES, SPATIALLY-VARIABLE WATER, SENSED SOIL-MOISTURE, DATA ASSIMILATION, DISCHARGE PREDICTIONS, BARE SOIL, SURFACE, MODEL, IMPROVEMENT
in
NATO Science Series IV Earth and Environmental Sciences
NATO Sci. Ser. IV Earth Env. Sci.
editor
NB Harmancioglu, SD Ozkul and O Fistikoglu
volume
23
issue title
INTEGRATED TECHNOLOGIES FOR ENVIRONMENTAL MONITORING AND INFORMATION PRODUCTION
pages
201 - 210
publisher
Springer
place of publication
Dordrecht, The Netherlands
conference name
NATO Advanced Research Workshop on Integrated Technologies for Environmental Monitoring and Information Production
conference location
Marmaris, Turkey
conference start
2001-09-10
conference end
2001-09-16
Web of Science type
Article
Web of Science id
000222998400015
ISSN
1568-1238
ISBN
1-4020-1398-1
language
English
UGent publication?
yes
classification
P1
id
404156
handle
http://hdl.handle.net/1854/LU-404156
date created
2008-05-14 16:22:00
date last changed
2010-01-12 10:18:15
@inproceedings{404156,
  abstract     = {During the last two decades, the potential of radar remote sensing in the retrieval of the water content of the near-surface unsaturated soil zone has been explored. This water content is usually referred to as soil moisture. The inversion of radar observations into soil moisture values has been hampered by an insufficient characterization of the soil toughness. However, some studies have focused on relating temporal changes of the radar signal to hydrologic relevant information. One result is presented here, where we show that variable source areas, which are mainly responsible for runoff in a catchment, can be visualized through a principal component analysis. A second part of this paper shows how soil moisture information obtained from radar imagery can be incorporated into hydrologic models. A first example uses an extended Kalman filtering technique, which adjusts the state variables from a hydrologic model. Through this technique, one-dimensional soil moisture profiles are retrieved with high accuracy. In a second example, we show a data-assimilation method which uses both the statistics and the spatial distribution of radar-retrieved soil moisture values, to adjust the modeled soil moisture profile. This methodology enables a better modeling of the rainfall-runoff behavior of the catchment.},
  author       = {De Troch, Fran\c{c}ois and Verhoest, Niko and Pauwels, Valentijn and Hoeben, Rudi},
  booktitle    = {NATO Science Series IV Earth and Environmental Sciences},
  editor       = {Harmancioglu, NB and Ozkul, SD and Fistikoglu, O},
  isbn         = {1-4020-1398-1},
  issn         = {1568-1238},
  keyword      = {ATMOSPHERE TRANSFER SCHEME,ENERGY-BALANCE PROCESSES,SPATIALLY-VARIABLE WATER,SENSED SOIL-MOISTURE,DATA ASSIMILATION,DISCHARGE PREDICTIONS,BARE SOIL,SURFACE,MODEL,IMPROVEMENT},
  language     = {eng},
  location     = {Marmaris, Turkey},
  pages        = {201--210},
  publisher    = {Springer},
  title        = {Assessing the applicability of hydrologic information from radar imagery},
  volume       = {23},
  year         = {2003},
}

Chicago
De Troch, François, Niko Verhoest, Valentijn Pauwels, and Rudi Hoeben. 2003. “Assessing the Applicability of Hydrologic Information from Radar Imagery.” In NATO Science Series IV Earth and Environmental Sciences, ed. NB Harmancioglu, SD Ozkul, and O Fistikoglu, 23:201–210. Dordrecht, The Netherlands: Springer.
APA
De Troch, F., Verhoest, N., Pauwels, V., & Hoeben, R. (2003). Assessing the applicability of hydrologic information from radar imagery. In N. Harmancioglu, S. Ozkul, & O. Fistikoglu (Eds.), NATO Science Series IV Earth and Environmental Sciences (Vol. 23, pp. 201–210). Presented at the NATO Advanced Research Workshop on Integrated Technologies for Environmental Monitoring and Information Production, Dordrecht, The Netherlands: Springer.
Vancouver
1.
De Troch F, Verhoest N, Pauwels V, Hoeben R. Assessing the applicability of hydrologic information from radar imagery. In: Harmancioglu N, Ozkul S, Fistikoglu O, editors. NATO Science Series IV Earth and Environmental Sciences. Dordrecht, The Netherlands: Springer; 2003. p. 201–10.
MLA
De Troch, François, Niko Verhoest, Valentijn Pauwels, et al. “Assessing the Applicability of Hydrologic Information from Radar Imagery.” NATO Science Series IV Earth and Environmental Sciences. Ed. NB Harmancioglu, SD Ozkul, & O Fistikoglu. Vol. 23. Dordrecht, The Netherlands: Springer, 2003. 201–210. Print.