Satellite estimation of flooded area and river water level dynamics: development of multisensor strategies.
Anuncio de Oportunidad ALOS – JAXA
(EN CURSO)
This Project proposes developments on passive and active microwave remote sensing field, in order to obtain ecohydrological information that is highly relevant for management and forecast activities of the La Plata Basin.
Specifically, we aim to obtain flooded area maps at regional scale for fluvial wetlands of the La Plata Basin, and to determine an empiric relation between hydrometric level at several portions of the Parana River and the flooded area fraction on adjacent floodplains, in order to assess regular and extreme flooding event dynamics on that basin.
The knowledge of the dynamics and temporal fluctuations of flooded area on the different floodplains of de La Plata Basin constitutes essential information for early flooding/drought alert systems and for environmental assessment models in general, including global change models.
The general aim of this project is to analyze the relation between flooded area fraction on the floodplain and river water level for areas of the basin that show the same hydrodynamic behavior using data from different satellite sensors, so that this information contributes with valid information in the improvement of hydrological models and anthropic activity effect assessment models.
The specific objectives of this project are:
– To develop a methodology that generates flooded area maps using passive microwaves. This methodology will be based on the development of algorithms, interaction models and other satellite data and field data.
– To develop a methodology to calibrate and validate the maps obtained from passive microwave sensors (low spatial resolution) using SAR data with higher spatial resolution.
– To study the relation between flooded area fraction and hydrometric water level data for different ecohydrological units on the Parana-Paraguay axis floodplains.
– To construct an effective topography schematic for each analyzed ecohydrological units, based on the results of the previous item.
– Using the effective topography schematics, to analyze the possibility of predicting flooding events dynamics from hydrometric data and auxiliary information.
The methodology will be based on Sippel et al. (1998) and Hamilton et al. (2002) for passive microwave and on change detection through image difference for SAR.año de presentación: 2012
mes de presentación: Octubre
Institución Participante: IAFE-Tor Vergata
