Estimation of the Degree of Saturation of Shallow Soils from Satellite Observations to Model Soil Slips Occurred in Emilia Romagna Region of Northern Italy
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Abstract
For the development of alert systems for soil slip occurrence, it is important to evaluate the degree of saturation of shallow soils (Sr) over wide areas. Taking into account the possibility to estimate spatial and temporal variation of soil moisture using remote sensing techniques, a possible correlation between Sr and the daily output of a sequential data assimilation system called ACHAB (Assimilation Code for HeAt and moisture Balance) has been studied. ACHAB is based on integrated use of remotely sensed land surface temperature (LST) and common data on meteorological forcing such as air temperature, wind-speed and incident solar radiation. The aim of this study is to understand if it is possible to use ACHAB output (a daily value of evaporative fraction for the whole Italian territory) to define the parameter Sr that could be introduced in a simplified model for the description of soil slip triggering mechanisms on territorial scale.
- L. Montrasio, “Stability Analysis of Soil Slip,” Proceed-ings of International Conference Risk 2000, C. A. Brebbia, Ed., Wit Press, Southampton, 2000.
- L. Montrasio and R. Valentino, “Experimental Analysis and Modelling of Shallow Landslides,” Landslides, Springer, Vol. 4, No. 3, 2007, pp. 291-296.
- L. Montrasio and R. Valentino, “A Model for Triggering Mechanisms of Shallow Landslide,” Natural Hazards and Earth System Sciences, Vol. 8, No. 5, 2008, pp. 1149-1159.
- L. Montrasio, R. Valentino and G. L. Losi, “Rainfall- Induced Shallow Landslides: A Model for the Triggering Mechanism of Some Case Studies in Northern Italy,” Landslides, Springer, Vol. 6, No. 3, 2009, pp. 241-251.
- L. Montrasio and R. Valentino, “X-SLIP: Un Modello per l’innesco di Frane Indotte da Piogge, Fisicamente Basato, Implementato su Piattaforma Experience,” Proceedings of Annual Meeting of Italian Geotechnical Researchers, IARG 2009 (in Italian), Roma, September 2009.
- R. Valentino, L. Montrasio, and G. L. Losi, “Modell- azione Dell’innesco di Frane Superficiali Indotte da Piogge: Dalla Scala Locale a Quella Regionale,” Pro- ceedings of Annual Meeting of Italian Geotechnical Researchers, IARG 2009 (in Italian), Roma, September 2009.
- M. Caruso, “Una Metodologia Teorica, Sperimentale e Numerica per la Previsione del Bilancio Idrico nei Terreni Superficiali non Saturi,” Ph.D. Dissertation, Uni- versity of Parma, Parma, 2007.
- B. R. Scanlon, R. W. Healy and P. G. Cook, “Choosing Appropriate Techniques for Quantifying Groundwater Re-charge,” Hydrogeology Journal, Vol. 10, 2002, pp. 18-39.
- G. Boni, F. Castelli and D. Entekabi, “Sampling Strategies and Assimilation of Ground Temperature for the Es-timation of Surface Energy Balance Components,” IEEE Transactions on Geoscience and Remote Sensing, Vol. 39, No. 1, 2001, pp. 165-172.
- F. Caparrini, F. Castelli and D. Entekabi “Variational Es-timation of Soil and Vegetation Turbulent Transfer and Heat Flux Parameters from Sequences of Multisensory Imagery,” Water Resources Research, Vol. 40, No. W12515, 2004, pp. 15-25.
- F. Caparrini, F. Castelli, D. Entekabi and L. Campo, “Sequential Assimilation of Land Temperature for Moni-toring Surface Components of the Hydrologic Cycle,” EUMETSAT Meteorological Satellite Conference, Helsinki, June 2006.
- C. H. B. Priestley and R. J. Taylor, “On the Assessment of Surface Heat Flux and Evaporation Using Large-Scale Parameters,” Monthly Weather Review, Vol. 100, No. 2, 1972, pp. 81-92.