干旱区生态环境知识资源中心(Arid): Investigating meteorological effect on river flow recession rate in an arid environment

Arid

DOI	10.1080/02626667.2020.1798009
	Investigating meteorological effect on river flow recession rate in an arid environment
	Gunawardhana, Luminda Niroshana; Al-Rawas, Ghazi A.
通讯作者	Gunawardhana, LN
来源期刊	HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES
ISSN	0262-6667
EISSN	2150-3435
出版年	2020
卷号	65 期号:13 页码:2249-2255
英文摘要	This study explores previously unreported linkage between recession rates of rainfall hyetograph and river flow hydrograph in an arid environment in Sultanate of Oman. Ephemeral streams are hydraulically disconnected from groundwater aquifers and depend on rainfall to produce water that flows only for hours or a few days at most. It therefore prompted to hypothesize that the recession rate of the rainfall event controls the corresponding recession of river flow. To test this assumption, 1-h river flow rates and 20-min rainfall rates in Al-Khoud catchment area for the period 1997-2013 were analysed. The river flow recession rate and antecedent river flow were found to be inversely proportional, while their relation improved with increasing time span of cumulating the antecedent river flow. The results further show that the simulation of river flow recession rate can be improved by incorporating the combined effects of rainfall recession rate and antecedent moisture content.
英文关键词	antecedent moisture content (AMC) compound effect vadose zone Oman
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000555659600001
WOS关键词	SOIL-MOISTURE ; RUNOFF ; CATCHMENT ; MODEL
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325395
作者单位	[Gunawardhana, Luminda Niroshana; Al-Rawas, Ghazi A.] Sultan Qaboos Univ, Coll Engn, Dept Civil & Architectural Engn, Muscat 123, Oman
推荐引用方式 GB/T 7714	Gunawardhana, Luminda Niroshana,Al-Rawas, Ghazi A.. Investigating meteorological effect on river flow recession rate in an arid environment[J],2020,65(13):2249-2255.
APA	Gunawardhana, Luminda Niroshana,&Al-Rawas, Ghazi A..(2020).Investigating meteorological effect on river flow recession rate in an arid environment.HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES,65(13),2249-2255.
MLA	Gunawardhana, Luminda Niroshana,et al."Investigating meteorological effect on river flow recession rate in an arid environment".HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES 65.13(2020):2249-2255.