TY - GEN
T1 - Flood and discharge monitoring during the 2008 Iowa flood using AMSR-E data
AU - Temimi, Marouane
AU - Ghedira, Hosni
AU - Khanbilvardi, Reza
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=77950946475&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77950946475&partnerID=8YFLogxK
U2 - 10.1109/IGARSS.2009.5417678
DO - 10.1109/IGARSS.2009.5417678
M3 - Conference contribution
AN - SCOPUS:77950946475
SN - 9781424433957
T3 - International Geoscience and Remote Sensing Symposium (IGARSS)
SP - V280-V283
BT - 2009 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2009 - Proceedings
T2 - 2009 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2009
Y2 - 12 July 2009 through 17 July 2009
ER -