干旱区生态环境知识资源中心(Arid): Stable Isotope Composition of Cyclone Mekunu Rainfall, Southern Oman

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DOI	10.1029/2020WR027644
	Stable Isotope Composition of Cyclone Mekunu Rainfall, Southern Oman
	Mueller, Thomas; Friesen, Jan; Weise, Stephan M.; Al Abri, Omar; Bait Said, Ali Bakhit Ali; Michelsen, Nils
通讯作者	Muller, T (corresponding author), UFZ Helmholtz Ctr Environm Res, Dept Hydrogeol, Leipzig, Germany. ; Muller, T (corresponding author), GEOMAR Helmholtz Ctr Ocean Res Kiel, Kiel, Germany.
来源期刊	WATER RESOURCES RESEARCH
ISSN	0043-1397
EISSN	1944-7973
出版年	2020
卷号	56 期号:12
英文摘要	Cyclone Mekunu hit the southern Arabian Peninsula in late May 2018 and brought rainfall amounts that accounted for up to 6 times the mean annual precipitation. Coming from the Arabian Sea, a quite underdocumented region with regard to cyclones, the storm eye crossed the Omani coast approximately 80 km east of the border to Yemen. Using automatic samplers, rainfall samples were collected during the event at three locations along a transect almost parallel to the storm track. The stable isotope analyses show a wide range of delta values, with minimum and maximum values of -17.01 parts per thousand delta O-18 and -1.77 parts per thousand delta O-18 and -122.2 parts per thousand delta H-2 and -1.6 parts per thousand delta H-2. On average, rainfall becomes isotopically lighter with elevation, but rather irregularly. In view of high wind speeds probably precluding a gradual rainout of ascending air masses, a pseudo elevation effect seems likely. Our measurements expand the known delta value range of local cyclones by about 6 parts per thousand for delta O-18 and by nearly 50 parts per thousand for delta H-2. The isotopic composition of the annual Indian Summer Monsoon shows values of -0.93 parts per thousand delta O-18 to 2.21 parts per thousand delta O-18 and -2.1 parts per thousand delta H-2 to 23.7 parts per thousand delta H-2. Thus, there is a clear difference in the dual isotope signatures of the two precipitation systems in the area. Our findings enable an assessment of the impact of cyclones on the hydro(geo)logical system. For the arid Najd area, we demonstrate that the isotopic signatures of groundwater samples fall between those of cyclone and (paleo)monsoon precipitation, suggesting that several rainfall types may have contributed to replenishment.
英文关键词	tropical cyclone stable isotopes precipitation paleoclimate Oman Arabian Sea
类型	Article
语种	英语
开放获取类型	Green Accepted, Green Published, hybrid
收录类别	SCI-E
WOS记录号	WOS:000603660400012
WOS关键词	RUB-AL-KHALI ; GROUNDWATER RECHARGE ; TROPICAL CYCLONES ; HUMID PERIODS ; WATER ; PRECIPITATION ; EVOLUTION ; RATIOS ; RECORD ; EVAPORATION
WOS类目	Environmental Sciences ; Limnology ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369233
作者单位	[Mueller, Thomas] UFZ Helmholtz Ctr Environm Res, Dept Hydrogeol, Leipzig, Germany; [Mueller, Thomas] GEOMAR Helmholtz Ctr Ocean Res Kiel, Kiel, Germany; [Friesen, Jan; Weise, Stephan M.] UFZ Helmholtz Ctr Environm Res, Dept Catchment Hydrol, Halle, Germany; [Al Abri, Omar] Res Council, Seeb, Oman; [Bait Said, Ali Bakhit Ali] Minist Reg Municipal & Water Resources, Salalah, Oman; [Michelsen, Nils] Tech Univ Darmstadt, Inst Appl Geosci, Darmstadt, Germany
推荐引用方式 GB/T 7714	Mueller, Thomas,Friesen, Jan,Weise, Stephan M.,et al. Stable Isotope Composition of Cyclone Mekunu Rainfall, Southern Oman[J],2020,56(12).
APA	Mueller, Thomas,Friesen, Jan,Weise, Stephan M.,Al Abri, Omar,Bait Said, Ali Bakhit Ali,&Michelsen, Nils.(2020).Stable Isotope Composition of Cyclone Mekunu Rainfall, Southern Oman.WATER RESOURCES RESEARCH,56(12).
MLA	Mueller, Thomas,et al."Stable Isotope Composition of Cyclone Mekunu Rainfall, Southern Oman".WATER RESOURCES RESEARCH 56.12(2020).