MEASUREMENT OF FIOOD FLOW DISCHARGE USING PICTURE PROCESSING OF AERIAL PHOTOGRAPHS

Aerial photographs of 1998 flood flow in the Tone River were analyzed by cross-correlation method to obtain velocity vectors over the flow surface. Characteristic features of flow downstream of bridge piers were examined by using the data. It was pointed out the discharge measurement by float estima...

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Bibliographic Details
Published inPROCEEDINGS OF HYDRAULIC ENGINEERING Vol. 45; pp. 481 - 486
Main Authors UTAMI, Tadashi, KINOSHITA, Ryosaku, SAWADA, Manabu
Format Journal Article
LanguageEnglish
Published Japan Society of Civil Engineers 2001
Subjects
aerial photographs
discharge measurement
flood flow discharge
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ISSN0916-7374
1884-9172
DOI10.2208/prohe.45.481

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Summary:Aerial photographs of 1998 flood flow in the Tone River were analyzed by cross-correlation method to obtain velocity vectors over the flow surface. Characteristic features of flow downstream of bridge piers were examined by using the data. It was pointed out the discharge measurement by float estimates larger discharge than real one. Features of velocity distribution and of the cross section profile of river bed were examined to get the guide-line on choosing the appropriate cross-section for discharge measurement.
ISSN:0916-7374
1884-9172
DOI:10.2208/prohe.45.481