Flood and discharge monitoring during the 2008 Iowa flood using AMSR-E data

Marouane Temimi, Hosni Ghedira, Reza Khanbilvardi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

The objective of this work is to demonstrate the potential of passive microwave data in monitoring flood and discharge conditions. The study case is the recent flood in Iowa in summer 2008. AMSR-E 37 GHz data have been used to calculate a Polarization Ratio Variation Index (PRVI). This new index uses the classic Polarization Ratio Index along with its mean and standard deviation to detect anomalies in soil moisture and/or flooded area extent. The PRVI have been used to delineate inundated areas in Iowa. Then surface area of inundated regions has been compared with downstream discharge observations. A rating curve has been developed to assess the relationship between the extent of flooded area and discharge magnitude downstream. A time lag term has been introduced to account for the delay between water surface extent and stream flow. Time lag values showed that this parameter is a good proxy for watershed drainage time and time of concentration (i.e. the flood wave propagation time plus the longest runoff time in the watershed.) suggesting that passive microwave image can be use to measure key watershed hydrologic parameters.

Original languageEnglish
Title of host publication2009 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2009 - Proceedings
PagesV280-V283
DOIs
StatePublished - 2009
Event2009 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2009 - Cape Town, South Africa
Duration: 12 Jul 200917 Jul 2009

Publication series

NameInternational Geoscience and Remote Sensing Symposium (IGARSS)
Volume5

Conference

Conference2009 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2009
Country/TerritorySouth Africa
CityCape Town
Period12/07/0917/07/09

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