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  • BB

  • Evaluation of MODIS Spectral Indices for Monitoring Hydrological Dynamics of a Small, Seasonally-Flooded Wetland in Southern Spain

    • Authors: Li, Linlin;  Advisor: -;  Participants: - (2015)

  • Monitoring spatio-temporal dynamics of hydrology in seasonally-flooded wetlands is important for water management and biodiversity conservation. Spectral data and derived indices from the Moderate Resolution Imaging Spectroradiometer (MODIS) have been used for hydrological monitoring of large wetlands. However, comparable studies for small wetlands (<25 km2) are lacking. Our aims are to examine whether MODIS-derived indices at 500-m spatial resolution can perform this task for small wetlands, and to compare the performance of various indices. First we evaluated if water levels are a good indicator for wetland inundation extent. A high correlation between water level and Landsat-derived inundation extent was found (R2 = 0.957). Secondly, we compared 10 years of water level fluctuatio...
  • LA

  • Identifying and classifying slum areas using remote sensing

    • Authors: Stein, A. ; Kohli, D.;  Advisor: -;  Participants: - (2015)

  • Thesis taking UN-HABITAT’s definition of slum household as a basis, this study proposes an ontological framework that conceptualizes slums using morphological indicators of the built environment; demonstrates a case of applicability of GSO and explores the transferability of an OOA method for slum classification developed on a single image area to other image areas; proposes a hierarchical method for slum detection by using a combination of texture and spatial metrics; demonstrates a method to quantify the uncertainties of slum interpretations performed by experts; presents the main research findings and conclusions corresponding to each research objective.
  • BB

  • Intercomparison of Surface Energy Fluxes Estimates from the FEST-EWB and TSEB Models over the Heterogeneous REFLEX 2012 Site (Barrax, Spain)

    • Authors: Corbari, Chiara;  Advisor: -;  Participants: - (2015)

  • An intercomparison between the Energy Water Balance model (FEST-EWB) and the Two-Source Energy Balance model (TSEB) is performed over a heterogeneous agricultural area. TSEB is a residual model which uses Land Surface Temperature (LST) from remote sensing as a main input parameter so that energy fluxes are computed instantaneously at the time of data acquisition. FEST-EWB is a hydrological model that predicts soil moisture and the surface energy fluxes on a continuous basis. LST is then a modelled variable. Ground and remote sensing data from the Regional Experiments For Land-atmosphere Exchanges (REFLEX) campaign in 2012 in Barrax gave the opportunity to validate and compare spatially distributed energy fluxes. The output of both models matches the ground observations quite well. H...
  • BB

  • Simultaneous atmospheric correction and quantification of suspended particulate matter in the Guadalquivir estuary from Landsat images

    • Authors: Capintero,Mariam;  Advisor: -;  Participants: - (2015)

  • Earth observations (EOs) following empirical and/or analytical approaches are a feasible alternative to obtain spatial and temporal distribution of water quality variables. The limitations observed in the use of empirical approaches to estimate high concentrations of suspended particulate matter (SPM) in the estuarine water of Guadalquivir have led the authors to use a semi-analytical model, which relates the water constituents’ concentration to the water leaving reflectance. In this work, the atmospheric correction has been carried out simultaneously and the aerosol reflectance and backscattering coefficients of SPM obtained. The results are validated using in situ SPM data series provided by a monitoring network in the study area. The results show that the model allows us to succe...
  • LT

  • STARS project overview :Powerpoint

    • Authors: de By, R.A.;  Advisor: -;  Participants: - (2015)

  • This lecture presents: Project synopsis; Project facts; Objectives; Main hypotheses; High dimensionality of problem space; Compared to high-income ag; STARS Data collection.
  • LT

  • The STARS project :Powerpoint

    • Authors: de By, R.A.;  Advisor: -;  Participants: - (2015)

  • This lecture presents: Project synopsis; Project facts; Objectives; Main hypotheses; High dimensionality of problem space; Compared to high-income ag; STARS Data collection.
  • LA

  • Integration of hydrogeophysics and remote sensing with coupled hydrological models

    • Authors: Su, Z.; Francés, A.P.;  Advisor: -;  Participants: - (2015)

  • Thesis present methodologies based on hydrogeophysics, remote sensing and geostatistics to contribute to the design of hydro- geological conceptual model; presents the development of the coupled MARMITES-MODFLOW model of surface, unsaturated and saturated zones that computes spatio-temporally the water fluxes at the catchment scale and integrates the sourcing and partitioning of the evapotranspiration; presents the integration of MRS-based hydrogeophysics into the coupled model.
  • BB

  • Utility of an automated thermal - based approach for monitoring evapotranspiration

    • Authors: Timmermans, Wim J.;  Advisor: -;  Participants: - (2015)

  • A very simple remote sensing-based model for water use monitoring is presented. The model acronym DATTUTDUT (Deriving Atmosphere Turbulent Transport Useful To Dummies Using Temperature) is a Dutch word which loosely translates as “it’s unbelievable that it works”. DATTUTDUT is fully automated and only requires a surface temperature map, making it simple to use and providing a rapid estimate of spatially- distributed fluxes. The algorithm is first tested over a range of environmental and land-cover conditions using data from four short-term field experiments and then evaluated over a growing season in an agricultural region. Flux model output is in satisfactory agreement with observations and established remote sensing-based models, except under dry and partial canopy cover condition...
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