Groundwater qanat potential mapping using frequency ratio and Shannon’s entropy models in the Moghan watershed, Iran
(2015) In Earth Science Informatics 8(1). p.171-186- Abstract
The purpose of current study is to produce groundwater qanat potential map using frequency ratio (FR) and Shannon's entropy (SE) models in the Moghan watershed, Khorasan Razavi Province, Iran. The qanat is basically a horizontal, interconnected series of underground tunnels that accumulate and deliver groundwater from a mountainous source district, along a water- bearing formation (aquifer), and to a settlement. A qanat locations map was prepared for study area in 2013 based on a topographical map at a 1:50,000-scale and extensive field surveys. 53 qanat locations were detected in the field surveys. 70 % (38 locations) of the qanat locations were used for groundwater potential mapping and 30 % (15 locations) were used for validation.... (More)
The purpose of current study is to produce groundwater qanat potential map using frequency ratio (FR) and Shannon's entropy (SE) models in the Moghan watershed, Khorasan Razavi Province, Iran. The qanat is basically a horizontal, interconnected series of underground tunnels that accumulate and deliver groundwater from a mountainous source district, along a water- bearing formation (aquifer), and to a settlement. A qanat locations map was prepared for study area in 2013 based on a topographical map at a 1:50,000-scale and extensive field surveys. 53 qanat locations were detected in the field surveys. 70 % (38 locations) of the qanat locations were used for groundwater potential mapping and 30 % (15 locations) were used for validation. Fourteen effective factors were considered in this investigation such as slope degree, slope aspect, altitude, topographic wetness index (TWI), stream power index (SPI), slope length (LS), plan curvature, profile curvature, distance to rivers, distance to faults, lithology, land use, drainage density, and fault density. Using the above conditioning factors, groundwater qanat potential map was generated implementing FR and SE models, and the results were plotted in ArcGIS. The predictive capability of frequency ratio and Shannon's entropy models were determined by the area under the relative operating characteristic curve. The area under the curve (AUC) for frequency ratio model was calculated as 0.8848. Also AUC for Shannon's entropy model was 0.9121, which depicts the excellence of this model in qanat occurrence potential estimation in the study area. So the Shannon's entropy model has higher AUC than the frequency ratio model. The produced groundwater qanat potential maps can assist planners and engineers in groundwater development plans and land use planning.
(Less)
- author
- Naghibi, Amir LU ; Pourghasemi, Hamid Reza ; Pourtaghi, Zohre Sadat and Rezaei, Ashkan
- publishing date
- 2015-03
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Frequency ratio, GIS, Iran, Qanat potential mapping, Shannon’s entropy
- in
- Earth Science Informatics
- volume
- 8
- issue
- 1
- pages
- 16 pages
- publisher
- Springer
- external identifiers
-
- scopus:84893189858
- ISSN
- 1865-0473
- DOI
- 10.1007/s12145-014-0145-7
- language
- English
- LU publication?
- no
- additional info
- Publisher Copyright: © 2014, Springer-Verlag Berlin Heidelberg.
- id
- d336af3f-7601-46e6-8e7a-8fa8927216cf
- date added to LUP
- 2025-09-28 19:06:11
- date last changed
- 2025-09-29 10:08:21
@article{d336af3f-7601-46e6-8e7a-8fa8927216cf,
abstract = {{<p>The purpose of current study is to produce groundwater qanat potential map using frequency ratio (FR) and Shannon's entropy (SE) models in the Moghan watershed, Khorasan Razavi Province, Iran. The qanat is basically a horizontal, interconnected series of underground tunnels that accumulate and deliver groundwater from a mountainous source district, along a water- bearing formation (aquifer), and to a settlement. A qanat locations map was prepared for study area in 2013 based on a topographical map at a 1:50,000-scale and extensive field surveys. 53 qanat locations were detected in the field surveys. 70 % (38 locations) of the qanat locations were used for groundwater potential mapping and 30 % (15 locations) were used for validation. Fourteen effective factors were considered in this investigation such as slope degree, slope aspect, altitude, topographic wetness index (TWI), stream power index (SPI), slope length (LS), plan curvature, profile curvature, distance to rivers, distance to faults, lithology, land use, drainage density, and fault density. Using the above conditioning factors, groundwater qanat potential map was generated implementing FR and SE models, and the results were plotted in ArcGIS. The predictive capability of frequency ratio and Shannon's entropy models were determined by the area under the relative operating characteristic curve. The area under the curve (AUC) for frequency ratio model was calculated as 0.8848. Also AUC for Shannon's entropy model was 0.9121, which depicts the excellence of this model in qanat occurrence potential estimation in the study area. So the Shannon's entropy model has higher AUC than the frequency ratio model. The produced groundwater qanat potential maps can assist planners and engineers in groundwater development plans and land use planning.</p>}},
author = {{Naghibi, Amir and Pourghasemi, Hamid Reza and Pourtaghi, Zohre Sadat and Rezaei, Ashkan}},
issn = {{1865-0473}},
keywords = {{Frequency ratio; GIS; Iran; Qanat potential mapping; Shannon’s entropy}},
language = {{eng}},
number = {{1}},
pages = {{171--186}},
publisher = {{Springer}},
series = {{Earth Science Informatics}},
title = {{Groundwater qanat potential mapping using frequency ratio and Shannon’s entropy models in the Moghan watershed, Iran}},
url = {{http://dx.doi.org/10.1007/s12145-014-0145-7}},
doi = {{10.1007/s12145-014-0145-7}},
volume = {{8}},
year = {{2015}},
}