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Spatially distributed water stages from remotelysensed imagery

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The potential of remote sensing for disaster monitoring is well known and numerous efforts are currently made towards more timely ... Weiterlesen
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Beschreibung

The potential of remote sensing for disaster monitoring is well known and numerous efforts are currently made towards more timely image acquisition. Synthetic aperture radar (SAR) satellites seem particularly useful for flood monitoring. To date, SAR flood imagery is mostly used to map flood area and extent. On only rare occasions, other flood-related variables are derived to aid flood management. Therefore, it is the aim of this work to derive water stages from a single date flood image that are accurate enough for adequate integration with flood inundation models. During a first stage, a SAR image of a flood has been used to develop a remote sensing-based flood model that accounts for most data uncertainties, adapts to localised flow behaviour and estimates spatially distributed water stages accurately enough for integration with hydrodynamic models. During a second stage, uncertainties associated with the SAR derived water stages are estimated, which is much in line with the current philosophy in hydrological modelling. Perspectives on how to use these data to support or even improve flood inundation modelling is highlighted in the last chapter.

Autorentext

Guy Schumann was awarded a PhD in geography from the University of Dundee (UK) in 2008. He is currently with the School of Geographical Sciences at the University of Bristol (UK) where he has been awarded a postdoctoral fellowship in hydrology.



Klappentext

The potential of remote sensing for disastermonitoring is well known and numerous efforts arecurrently made towards more timely image acquisition.Synthetic aperture radar (SAR) satellites seemparticularly useful for flood monitoring. To date,SAR flood imagery is mostly used to map flood areaand extent. On only rare occasions, otherflood-related variables are derived to aid floodmanagement. Therefore, it is the aim of this work toderive water stages from a single date flood imagethat are accurate enough for adequate integrationwith flood inundation models. During a first stage, aSAR image of a flood has been used to develop aremote sensing-based flood model that accounts formost data uncertainties, adapts to localised flowbehaviour and estimates spatially distributed waterstages accurately enough for integration withhydrodynamic models. During a second stage,uncertainties associated with the SAR derived waterstages are estimated, which is much in line with thecurrent philosophy in hydrological modelling.Perspectives on how to use these data to support oreven improve flood inundation modelling ishighlighted in the last chapter.

Produktinformationen

Titel: Spatially distributed water stages from remotelysensed imagery
Untertitel: Prospects for improved flood inundation modelling
Autor:
EAN: 9783639153132
ISBN: 978-3-639-15313-2
Format: Kartonierter Einband
Herausgeber: VDM Verlag Dr. Müller e.K.
Genre: Geowissenschaften
Anzahl Seiten: 116
Gewicht: 192g
Größe: H221mm x B151mm x T9mm
Jahr: 2013