International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Volume XLII-4/W12
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-4/W12, 105–111, 2019
https://doi.org/10.5194/isprs-archives-XLII-4-W12-105-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-4/W12, 105–111, 2019
https://doi.org/10.5194/isprs-archives-XLII-4-W12-105-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

  21 Feb 2019

21 Feb 2019

SOIL MOISTURE MAPPING USING SMOS APPLIED TO FLOOD MONITORING IN THE MOROCCAN CONTEXT

H. Laachrate1, A. Fadil2, and A. Ghafiri1 H. Laachrate et al.
  • 1Ben M'sik Faculty of Sciences, Av Driss El Harti, Sidi Othmane, Casablanca, B.P 7955, Morocco
  • 2Hassania School of Public Works, Km 7 Route d'El Jadida, Casablanca, BP 8108, Morocco

Keywords: Soil moisture, Rainfall, Microwave, SMOS, Hydrology, Remote sensing, Floods, Flood Monitoring, Morocco

Abstract. Soil moisture is an important parameter in many fields: hydrological, agricultural and even natural hazards monitoring (like floods). And, since soil moisture is crucial to flood monitoring a soil moisture spatial mission was launched in the 2nd November 2009: Soil Moisture And Ocean Salinity (SMOS). In this context, two Moroccan flood events are considered: November 2014 floods at Guelmim and Sidi Ifni and 23rd February 2017 floods at Rabat and Salé. The methodology is based on the combination of the observation of two parameters: soil moisture (satellite data) and rainfall data (in-situ and satellite-based data) in order to have a vision of the flood risk in Morocco in the future with the comparison of Rainfall and soil moisture maps before and after the flood events. Among the main results, a strong relation between soil moisture and floods was detected for the November 2014 floods (for Guelmim soil moisture reached 0.6 m3/m3 on 20 and 21 November 2014) and between Rainfall amount and floods for the 23 February 2017 floods (119 mm on the day of the flood event).