干旱区生态环境知识资源中心(Arid): TDEM prospections for inland groundwater exploration in semiarid climate, Island of Fogo, Cape Verde

Arid

DOI	10.1016/j.jappgeo.2020.104242
	TDEM prospections for inland groundwater exploration in semiarid climate, Island of Fogo, Cape Verde
	Amato, F.; Pace, F.; Vergnano, A.; Comina, C.
通讯作者	Comina, C (corresponding author), Univ Torino, Dipartimento Sci Terra, DST, Turin, Italy.
来源期刊	JOURNAL OF APPLIED GEOPHYSICS
ISSN	0926-9851
EISSN	1879-1859
出版年	2021
卷号	184
英文摘要	Groundwater resource assessment is fundamental for agriculture in arid or semiarid conditions, where precipitations are irregular and scarce. In volcanic islands, groundwater resources are often located at significative depths, thus hindering direct exploration. The application of geophysical techniques is therefore necessary for a preliminary evaluation of water availability and to identify potential drilling points. In this study, Time Domain Electromagnetic Method (TDEM) soundings were used for groundwater prospection in the surroundings of a vineyard on the island of Fogo, Cape Verde. A pseudo-2D profile of ten sounding points was located within the vineyard, and other localized prospections were performed close to known boreholes, for attempting correlations of TDEM evidence with water depth and stratigraphy. The data acquired were interpreted by means of three inversion algorithms to obtain an uncertainty evaluation of the results: the particle-swarm-optimization algorithm, the linearized 1D inversion and the spatially constrained inversion were applied. These methods provided a set of equivalent solutions of the TDEM inverse problem to be evaluated and compared. The inverted models are highly consistent and show little mismatch at greater depths. The main outcome regarding the resistivity distribution in the vineyard subsurface is the evidence of a nearly 150 m-thick conductive region (1-10 Omega m). Information from existent water wells enhanced the hydrogeological interpretation of the profiles and the detection of potential water-saturated formations. (C) 2020 Elsevier B.V. All rights reserved.
英文关键词	Time-domain Electromagnetics (TDEM) Spatially constrained inversion (SCI) Particle swarm optimization (PSO) Groundwater resources Cape Verde Volcanic islands
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000637337500013
WOS类目	Geosciences, Multidisciplinary ; Mining & Mineral Processing
WOS研究方向	Geology ; Mining & Mineral Processing
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369074
作者单位	[Amato, F.; Comina, C.] Univ Torino, Dipartimento Sci Terra, DST, Turin, Italy; [Pace, F.; Vergnano, A.] Politecn Torino, Dipartimento Ingn Ambiente Terr & Infrastrutture, DIATI, Turin, Italy
推荐引用方式 GB/T 7714	Amato, F.,Pace, F.,Vergnano, A.,et al. TDEM prospections for inland groundwater exploration in semiarid climate, Island of Fogo, Cape Verde[J],2021,184.
APA	Amato, F.,Pace, F.,Vergnano, A.,&Comina, C..(2021).TDEM prospections for inland groundwater exploration in semiarid climate, Island of Fogo, Cape Verde.JOURNAL OF APPLIED GEOPHYSICS,184.
MLA	Amato, F.,et al."TDEM prospections for inland groundwater exploration in semiarid climate, Island of Fogo, Cape Verde".JOURNAL OF APPLIED GEOPHYSICS 184(2021).