Prediction of Karst Suitable Area Using Fuzzy AHP Method and Dempster‐Shafer Theory

Abstract Finding abundant sources of drinking water is a must in practically every country throughout the world. The issue is even more dire in arid and semi‐arid regions, such as Iran, where the shortage of healthy drinking water is quite serious. Finding and maintaining groundwater resources is th...

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Autores principales:	M. Mokarram, P. Mohammadizadeh
Formato:	article
Lenguaje:	EN
Publicado:	American Geophysical Union (AGU) 2021
Materias:	karstic areas fuzzy‐AHP method Dempster‐Shafer theory (DST) Maharlou watershed Astronomy QB1-991 Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/81ff518c0d2e4150bcbbe7156fd2a0ae
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spelling	oai:doaj.org-article:81ff518c0d2e4150bcbbe7156fd2a0ae2021-11-23T21:03:08ZPrediction of Karst Suitable Area Using Fuzzy AHP Method and Dempster‐Shafer Theory2333-508410.1029/2019EA000719https://doaj.org/article/81ff518c0d2e4150bcbbe7156fd2a0ae2021-11-01T00:00:00Zhttps://doi.org/10.1029/2019EA000719https://doaj.org/toc/2333-5084Abstract Finding abundant sources of drinking water is a must in practically every country throughout the world. The issue is even more dire in arid and semi‐arid regions, such as Iran, where the shortage of healthy drinking water is quite serious. Finding and maintaining groundwater resources is therefore potentially the best alternative for supplying the water demand of the country. Accordingly, this study aims to assess the potential of karstic areas as a major source of water supply in southwestern regions of the Maharlou watershed, Iran. For this purpose, a combination of fuzzy‐AHP (analytical hierarchy process) and DST (Dempster‐Shafer Theory) methods are used to locate suitable karstic regions in the study area. Karstic zone maps were also generated using a variety of parameters including lithology, fault, precipitation, elevation, temperature, river and slope. Fuzzy maps were also produced using fuzzy membership functions for each parameter, after which the AHP approach was incorporated to assign weights to each layer and eventually generate the final fuzzy‐AHP map. Ultimately, the DST model was used at three confidence intervals of 99.5%, 99%, and 95%. Based on the final results of the fuzzy‐AHP method, approximately 30% of the study region was unsuitable in terms of access to karstic areas, whereas unsuitable zones obtained using the DST method contributed to about 41%, 44%, and 46% of the study region at 95%, 99%, and 99.5% confidence levels, respectively. Taking into account the fact that reductions in the distance from faults increases the probability of the presence of karst regions (with other parameters being constant), by comparing the results of the two models with fault maps, it was determined that the DST model achieves higher accuracy. The DST method is among common methods employed to predict suitable karstic regions, which ultimately produces different maps based on the configured confidence level.M. MokarramP. MohammadizadehAmerican Geophysical Union (AGU)articlekarstic areasfuzzy‐AHP methodDempster‐Shafer theory (DST)Maharlou watershedAstronomyQB1-991GeologyQE1-996.5ENEarth and Space Science, Vol 8, Iss 11, Pp n/a-n/a (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	karstic areas fuzzy‐AHP method Dempster‐Shafer theory (DST) Maharlou watershed Astronomy QB1-991 Geology QE1-996.5
spellingShingle	karstic areas fuzzy‐AHP method Dempster‐Shafer theory (DST) Maharlou watershed Astronomy QB1-991 Geology QE1-996.5 M. Mokarram P. Mohammadizadeh Prediction of Karst Suitable Area Using Fuzzy AHP Method and Dempster‐Shafer Theory
description	Abstract Finding abundant sources of drinking water is a must in practically every country throughout the world. The issue is even more dire in arid and semi‐arid regions, such as Iran, where the shortage of healthy drinking water is quite serious. Finding and maintaining groundwater resources is therefore potentially the best alternative for supplying the water demand of the country. Accordingly, this study aims to assess the potential of karstic areas as a major source of water supply in southwestern regions of the Maharlou watershed, Iran. For this purpose, a combination of fuzzy‐AHP (analytical hierarchy process) and DST (Dempster‐Shafer Theory) methods are used to locate suitable karstic regions in the study area. Karstic zone maps were also generated using a variety of parameters including lithology, fault, precipitation, elevation, temperature, river and slope. Fuzzy maps were also produced using fuzzy membership functions for each parameter, after which the AHP approach was incorporated to assign weights to each layer and eventually generate the final fuzzy‐AHP map. Ultimately, the DST model was used at three confidence intervals of 99.5%, 99%, and 95%. Based on the final results of the fuzzy‐AHP method, approximately 30% of the study region was unsuitable in terms of access to karstic areas, whereas unsuitable zones obtained using the DST method contributed to about 41%, 44%, and 46% of the study region at 95%, 99%, and 99.5% confidence levels, respectively. Taking into account the fact that reductions in the distance from faults increases the probability of the presence of karst regions (with other parameters being constant), by comparing the results of the two models with fault maps, it was determined that the DST model achieves higher accuracy. The DST method is among common methods employed to predict suitable karstic regions, which ultimately produces different maps based on the configured confidence level.
format	article
author	M. Mokarram P. Mohammadizadeh
author_facet	M. Mokarram P. Mohammadizadeh
author_sort	M. Mokarram
title	Prediction of Karst Suitable Area Using Fuzzy AHP Method and Dempster‐Shafer Theory
title_short	Prediction of Karst Suitable Area Using Fuzzy AHP Method and Dempster‐Shafer Theory
title_full	Prediction of Karst Suitable Area Using Fuzzy AHP Method and Dempster‐Shafer Theory
title_fullStr	Prediction of Karst Suitable Area Using Fuzzy AHP Method and Dempster‐Shafer Theory
title_full_unstemmed	Prediction of Karst Suitable Area Using Fuzzy AHP Method and Dempster‐Shafer Theory
title_sort	prediction of karst suitable area using fuzzy ahp method and dempster‐shafer theory
publisher	American Geophysical Union (AGU)
publishDate	2021
url	https://doaj.org/article/81ff518c0d2e4150bcbbe7156fd2a0ae
work_keys_str_mv	AT mmokarram predictionofkarstsuitableareausingfuzzyahpmethodanddempstershafertheory AT pmohammadizadeh predictionofkarstsuitableareausingfuzzyahpmethodanddempstershafertheory
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Prediction of Karst Suitable Area Using Fuzzy AHP Method and Dempster‐Shafer Theory

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