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| Titel |
Derivation of groundwater flow-paths based on semi-automatic extraction of lineaments from remote sensing data |
| VerfasserIn |
U. Mallast, R. Gloaguen, S. Geyer, T. Rödiger, C. Siebert |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 15, no. 8 ; Nr. 15, no. 8 (2011-08-25), S.2665-2678 |
| Datensatznummer |
250012933
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| Publikation (Nr.) |
 copernicus.org/hess-15-2665-2011.pdf |
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| Zusammenfassung |
| In this paper we present a semi-automatic method to infer groundwater
flow-paths based on the extraction of lineaments from digital elevation
models. This method is especially adequate in remote and inaccessible areas
where in-situ data are scarce. The combined method of linear filtering and
object-based classification provides a lineament map with a high degree of
accuracy. Subsequently, lineaments are differentiated into geological and
morphological lineaments using auxiliary information and finally evaluated
in terms of hydro-geological significance. Using the example of the western
catchment of the Dead Sea (Israel/Palestine), the orientation and location
of the differentiated lineaments are compared to characteristics of known
structural features. We demonstrate that a strong correlation between
lineaments and structural features exists. Using Euclidean distances between
lineaments and wells provides an assessment criterion to evaluate the
hydraulic significance of detected lineaments. Based on this analysis, we
suggest that the statistical analysis of lineaments allows a delineation of
flow-paths and thus significant information on groundwater movements. To
validate the flow-paths we compare them to existing results of groundwater
models that are based on well data. |
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