Doline probability map using logistic regression and GIS technology in the central Ebro Basin (Spain) |
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| Authors: | M T Lamelas O Marinoni A Hoppe J de la Riva |
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| Institution: | 1. Institut für Angewandte Geowissenschaften, Technische Universit?t Darmstadt, Schnittspahnstrasse, 9, 64287, Darmstadt, Germany
2. Department of Geografía y Ordenación del Territorio, Facultad de Filosofía y Letras, Universidad de Zaragoza, Pedro Cerbuna 12, 50009, Zaragoza, Spain
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| Abstract: | In the surroundings of Zaragoza, karstification processes are especially intense in covered karst areas where fluvial terraces
lie directly on Tertiary evaporites. Since the beginning of Quaternary, these processes have lead to the development of collapse
and subsidence dolines with a wide range of sizes, which have significant economic impacts. To reduce economic impact and
increase safety, a regional analysis of this phenomenon is needed for spatial management. Therefore, a probability map of
dolines was developed using logistic regression and geographic information system (GIS) techniques. This paper covers the
selection of input data, manipulation of data using the GIS technology, and the use of logistic regression to generate a doline
probability map. The primary variable in the doline development in this area is geomorphology, represented by the location
of endorheic areas and different terrace levels. Secondary variables are the presence of irrigation and the water table gradient. |
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| Keywords: | Dolines Geo-hazards GIS Logistic regression Ebro Basin |
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