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Multi-sensor Space Observation of Heavy Flood and Drought Conditions in the Amazon Region

  • Florian Seitz
  • Karin Hedman
  • Franz J. Meyer
  • Hyongki Lee
Conference paper
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 139)

Abstract

Variations of continental water storage and related changes of water surface extensions are being observed by a variety of contemporary geometrical and gravimetrical space observation systems and in-situ measuring instruments. Within a regional multi-sensor study in the Amazon basin we elaborate on the potential of different systems for the quantification of variations of water mass and water surface extent caused by extreme flood and drought situations during 2002–2010. In particular we focus on a rapid change between a widespread flood and a drought situation in the year 2009. Observations of water mass from satellite gravimetry (GRACE), water stage from satellite altimetry (Envisat) and water extent from L-band radar remote sensing (PALSAR) are very consistent with respect to their spatial and temporal variability. On the basis of our findings we provide an outlook on the applicability of measurements of water levels and surface water extent for an independent assessment of water volume changes. Those might be used for a cross-comparison with estimates of water storage from GRACE.

Keywords

Multi-sensor analysis Extreme events GRACE SAR Satellite altimetry 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Florian Seitz
    • 1
  • Karin Hedman
    • 1
  • Franz J. Meyer
    • 2
  • Hyongki Lee
    • 3
  1. 1.Earth Oriented Space Science and Technology (ESPACE)MunichGermany
  2. 2.Earth and Planetary Remote SensingUniversity of AlaskaAKUSA
  3. 3.Department of Civil and Environmental EngineeringUniversity of HoustonTXUSA

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