Using geoinformatics and geomorphometrics to quantify the geodiversity of Crete,Greece |
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| Institution: | 1. Institute of Geography, Natural Hazard Research and Geoarchaeology, Johannes Gutenberg-Universität, Johann-Joachim-Becher-Weg 21, 55099 Mainz, Germany;2. Centre Camille Jullian, Aix-Marseille Université CNRS (UMR 7299), MMSH, 5 Rue Château de l''Horloge, 13090 Aix-en-Provence, France;3. Ephorate of Underwater Antiquities, Hellenic Ministry of Culture, Greece;4. Ephorate of Antiquities of Rethymnon, Hellenic Ministry of Culture, Arkadiou 214, Rethymnon, 74 100, Crete, Greece;5. Neotectonics and Natural Hazard Research Group, Rheinisch-Westfälische Technische Universität Aachen, Lochnerstr. 4-20, 52056 Aachen, Germany;6. Mineralogy-Geology Laboratory, Department of Natural Resources Development and Agricultural Engineering, Agricultural University of Athens, 75 Iera Odos Street, 118 55 Athens, Greece;1. Institute for Neotectonics and Natural Hazards, RWTH Aachen University, Lochnerstr. 4-20, 52064 Aachen, Germany;2. Laboratory of Mineralogy & Geology, Department of Natural Resources Development and Agricultural Engineering, Agricultural University of Athens, 75 Iera Odos Str., 11855 Athens, Greece;3. Institute for Geology and Mineralogy, University of Cologne, Zuelpicherstr. 49b, 50937 Köln, Germany |
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| Abstract: | The geodiversity of Crete is quantified in this study, based on the classification of geomorphometric, geological and climatic factors. A number of geomorphometric variables, extracted from the ASTER Global Digital Elevation Model (ASTER G-DEM) in conjunction with geological and climatic information, are evaluated through various algorithms incorporated into Geographical Information System (GIS) software’s. The derived geoinformatic data sets are then analyzed to produce the geodiversity of Crete. The geodiversity map is used to quantify the geodiversity, by calculating landscape diversity and other spatial pattern indices. Those indices are evaluating the richness, evenness, fragmentation and shape of the landscape patch types. The outcome of this study has highlighted that western Crete is characterized by complex geodiversity with more irregular, elongated and fragmented landscape patterns relative to the eastern part of the island. The geodiversity indices provide insights into the processes shaping landscapes, particularly the “battle” between neotectonic landscape deformation and erosion/deposition. The methodology presented can be useful for decision makers when evaluating a regions geological heritage, planning the management of natural resources, or designating areas for conservation. |
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| Keywords: | Geodiversity Geomorphometrics Landscape indices Geoinformatics ASTER G-DEM |
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