干旱区生态环境知识资源中心(Arid): Evaluation of electrical resistivity tomography (ERT) for mapping the soil-rock interface in karstic environments

Arid

DOI	10.1007/s12665-019-8440-8
	Evaluation of electrical resistivity tomography (ERT) for mapping the soil-rock interface in karstic environments
	Cheng, Qinbo 1,2; Tao, Min 2; Chen, Xi2,3 ; Binley, Andrew 1
通讯作者	Binley, Andrew
来源期刊	ENVIRONMENTAL EARTH SCIENCES
ISSN	1866-6280
EISSN	1866-6299
出版年	2019
卷号	78 期号:15
英文摘要	Rocky desertification is a significant threat in the karst regions of southwest China. Studies of soil distribution can contribute to protecting and recovering the fragile karst ecosystem that is prevalent in this region. With an underlying aim of being able to assess soil stocks in karstic environments, this study evaluates the use of electrical resistivity tomography (ERT) for delineating the soil-rock interface. Using a synthetic model (that recognizes the three-dimensional nature of the subsurface), experiments are performed to assess the impact of measurement errors and measurement configuration on recovery of the interface. The inverted results show that the accuracy of the delineation of the soil-rock interface decreases with the increase of measurement error and dipole spacing. The results also show the importance of reliable estimation of measurement errors. Field-based applications of ERT at five exposed profiles in southwest China are also reported. For the field data, three-dimensional modelling was necessary to account for the exposed face. The field experiments show that ERT can be effective at delineating the interface between soil and bedrock, but resolution can be limited due to the scale of features or lack of contrast between soil and bedrock. The method shows great promise as a means of assessing, in a non-invasive manner, the soil-bedrock interface, and, perhaps, more significantly, quantifying estimates of total soil stocks, as we seek to quantify the vulnerability or resilience of this important landscape to anthropogenic and natural stresses.
英文关键词	Electrical resistivity tomography (ERT) Geophysics, Karst Terra rossa Critical zone
类型	Article
语种	英语
国家	England ; Peoples R China
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000476489300008
WOS关键词	TERRA-ROSSA GENESIS ; GEOPHYSICAL METHODS ; EPIKARST ; DESERTIFICATION ; SYSTEM ; CHINA
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
来源机构	河海大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215429
作者单位	1.Univ Lancaster, Lancaster Environm Ctr, Lancaster LA1 4YQ, England; 2.Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing 210098, Jiangsu, Peoples R China; 3.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Qinbo,Tao, Min,Chen, Xi,et al. Evaluation of electrical resistivity tomography (ERT) for mapping the soil-rock interface in karstic environments[J]. 河海大学,2019,78(15).
APA	Cheng, Qinbo,Tao, Min,Chen, Xi,&Binley, Andrew.(2019).Evaluation of electrical resistivity tomography (ERT) for mapping the soil-rock interface in karstic environments.ENVIRONMENTAL EARTH SCIENCES,78(15).
MLA	Cheng, Qinbo,et al."Evaluation of electrical resistivity tomography (ERT) for mapping the soil-rock interface in karstic environments".ENVIRONMENTAL EARTH SCIENCES 78.15(2019).