干旱区生态环境知识资源中心(Arid): Electrical resistivity tomography and forward modelling in hyper-arid environments - A case study from Erg Chebbi, Southeast Morocco

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DOI	10.1127/zfg_suppl/2019/0529
	Electrical resistivity tomography and forward modelling in hyper-arid environments - A case study from Erg Chebbi, Southeast Morocco
	Herzog, Manuel 1; Kanig, Maximilian 2; Bubenzer, Olaf 1
通讯作者	Herzog, Manuel
来源期刊	ZEITSCHRIFT FUR GEOMORPHOLOGIE
ISSN	0372-8854
出版年	2019
卷号	62 页码:119-135
英文摘要	Electrical Resistivity Tomography (ERT), a non-destructive geophysical method, which aims at detecting sediment conductivity and its distribution including e.g. stratification, has been used in manifold research topics, for example in sedimentology, hydrology, and geoarchaeology. However, ERT is mostly used in humid to semi-arid environments, where at least some underground moisture guarantees reliable conductivity. In this paper, for the first time, the results of ERT measurements are presented in combination with geomorphological and sedimentological investigations in a dune-interdune system in a hyper-arid environment. Erg Chebbi in South-East Morocco and its environment is characterized by very scarce precipitation and high evaporation rates, which presents significant methodological challenges. Reliable results were generated, displaying a distinct border between a dune body and underlying playa sediments. In the latter, a thin calcareous crust, found by drillings, was not displayed by ERT data due to their spacial depth resolution. To account for this, robust resistivity forward modelling was used to explain contradicting ERT data and corresponding sedimentological results. Major advantages and drawbacks concerning measurement set ups, modelling and interpretation arc finally discussed. In conclusion, the use of ERT in a hyper-arid environment proved to be a successful and reliable tool if mentioned precautions (in field validation, suitable array layout) are taken into account.
英文关键词	Erg Chebbi Desert Hyper-arid environment Electrical Resistivity Tomography (ERT) Resistivity Forward Modelling Geophysical prospection
类型	Article
语种	英语
国家	Germany
收录类别	SCI-E
WOS记录号	WOS:000476620100006
WOS关键词	SOIL-WATER CONTENT ; SEDIMENTARY STRUCTURE ; CONTAMINATION ; GEOPHYSICS ; DYNAMICS ; DUNES ; ZONES ; AREA ; GPR
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/219349
作者单位	1.Heidelberg Univ, Inst Geog, Neuenheimer Feld 348, D-69120 Heidelberg, Germany; 2.Univ Cologne, Inst Geog, Albertus Magnus Pl, D-50923 Cologne, Germany
推荐引用方式 GB/T 7714	Herzog, Manuel,Kanig, Maximilian,Bubenzer, Olaf. Electrical resistivity tomography and forward modelling in hyper-arid environments - A case study from Erg Chebbi, Southeast Morocco[J],2019,62:119-135.
APA	Herzog, Manuel,Kanig, Maximilian,&Bubenzer, Olaf.(2019).Electrical resistivity tomography and forward modelling in hyper-arid environments - A case study from Erg Chebbi, Southeast Morocco.ZEITSCHRIFT FUR GEOMORPHOLOGIE,62,119-135.
MLA	Herzog, Manuel,et al."Electrical resistivity tomography and forward modelling in hyper-arid environments - A case study from Erg Chebbi, Southeast Morocco".ZEITSCHRIFT FUR GEOMORPHOLOGIE 62(2019):119-135.