RIVER BED CHANGE OF THE TOKACHI RIVER IN FLOOD, AUGUST 2003

Autor:	Takashi Kuwamura, Yasuharu Watanabe
Rok vydání:	2004
Předmět:	Hydrology geography geography.geographical_feature_category Flood myth Bar (music) Organic Chemistry Flow (psychology) Biochemistry Peak water River bed Field observation Unsteady flow Geomorphology Geology Channel (geography)
Zdroj:	PROCEEDINGS OF HYDRAULIC ENGINEERING. 48:979-984
ISSN:	1884-9172 0916-7374
DOI:	10.2208/prohe.48.979
Popis:	Field observation of bed configuration was conducted during the 2003 August flood at the Tokachi River. Radio controlled boat was used in this measurement. The aim of this observation is to clarify the change of bed topography during flood. It is found that the bar formation becomes unclear and the flow becomes straight along the channel at the neighborhood of peak water level in which the hydraulic condition becomes no bar region. The changing of observed bed configuration during the flood is compared with the result of stability analysis under unsteady flow condition. The general tendencies of bar formation change by the theoretical results agree with field data. However, the theoretical results cannot reproduce the observed bar wavelength.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::aba7f9ea558316792e5dc6a607ce16ca https://doi.org/10.2208/prohe.48.979 Zobrazit plný text záznamu