干旱区生态环境知识资源中心(Arid): Estimation of Groundwater Recharge in Makutupora Basin Located in a Semi-arid Region in Central Tanzania using Soil Moisture Balance (SMB) and Chloride Mass Balance (CMB) Techniques

Arid

DOI	10.1007/s12594-022-2217-5
	Estimation of Groundwater Recharge in Makutupora Basin Located in a Semi-arid Region in Central Tanzania using Soil Moisture Balance (SMB) and Chloride Mass Balance (CMB) Techniques
	Kisiki, Clarance Paul; Ayenew, Tenalem; Mjemah, Ibrahimu Chikira
通讯作者	Kisiki, CP
来源期刊	JOURNAL OF THE GEOLOGICAL SOCIETY OF INDIA
ISSN	0016-7622
EISSN	0974-6889
出版年	2022
卷号	98 期号:11 页码:1605-1614
英文摘要	The objective of this study is to assess the groundwater recharge in the Makutupora basin, Central Tanzania using the soil moisture balance (SMB) and chloride mass balance (CMB) methods. The SMB method considered the estimation of both evapotranspiration in CROPWAT 8.0 software and surface runoff by the curve number (CN) method. The CN of the basin was determined based on hydrological soil group (HSG), antecedent moisture condition (AMC) and land use type using Arc GIS 10.2. Distributed land-use maps, slope and soil texture maps, daily climatological data (e.g., precipitation, temperature, wind speed, etc.), chloride concentration in rainfall and groundwater are the basic data used in this study. Input data were prepared in the form of digital maps using GIS and remote sensing tools and finally excel models were created to compute recharge using a set of given conditions. The results indicate that the average chloride concentration measured in the groundwater samples of the study area is 282.88 mg/L; much higher than the average concentration in rainwater samples which is 3.47mg/L while the average potential evapotranspiration is 2280 mm/year with an average rainfall of 680mm/year. Runoff computed using the CN method is ranging from 7.6-246mm/year or 0.68-22%. The final recharge from SMB is ranging from 0.025-117.86mm/year or 0.006-10% of annual rainfall equivalent to an average annual volume of 41.58Mm(3) while recharge from CMB ranges from 2.57-44.6mm/year or 0.38-6.56% of annual rainfall equivalent to an average annual volume of 23.85Mm(3). The results show that CMB underestimated the recharge compared to the SMB method. The reason for this is thought to be caused by the high chloride concentration analysed in groundwater compared to rainfall samples which may be caused by increased chloride concentration as water passes through the rock formations (unsaturated zone) to the saturated zone. Further lack of atmospheric chloride deposition data may be another contributing factor.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000883451700018
WOS关键词	NATURAL RECHARGE ; GIS ; RUNOFF ; AREA
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393611
推荐引用方式 GB/T 7714	Kisiki, Clarance Paul,Ayenew, Tenalem,Mjemah, Ibrahimu Chikira. Estimation of Groundwater Recharge in Makutupora Basin Located in a Semi-arid Region in Central Tanzania using Soil Moisture Balance (SMB) and Chloride Mass Balance (CMB) Techniques[J],2022,98(11):1605-1614.
APA	Kisiki, Clarance Paul,Ayenew, Tenalem,&Mjemah, Ibrahimu Chikira.(2022).Estimation of Groundwater Recharge in Makutupora Basin Located in a Semi-arid Region in Central Tanzania using Soil Moisture Balance (SMB) and Chloride Mass Balance (CMB) Techniques.JOURNAL OF THE GEOLOGICAL SOCIETY OF INDIA,98(11),1605-1614.
MLA	Kisiki, Clarance Paul,et al."Estimation of Groundwater Recharge in Makutupora Basin Located in a Semi-arid Region in Central Tanzania using Soil Moisture Balance (SMB) and Chloride Mass Balance (CMB) Techniques".JOURNAL OF THE GEOLOGICAL SOCIETY OF INDIA 98.11(2022):1605-1614.