Mapping of semi-arid iron bearing red sands on emerged areas around lake marshes (Tablas de Daimiel, Spain) using hyperspectral DAIS 7915 spectrometer data
Main Article Content
Abstract
Wetlands are particularly sensitive environments receiving attention from the natural sciences community due to
their wealth of both flora and fauna, and often considered as natural parks. In the Tablas de Daimiel (La Mancha,
Central Spain), Digital Airborne Imaging Spectrometer data (DAIS 7915) have been analyzed to map geological
processes on areas around the receding wetland which have never been flooded by water in the past. Sediments
permanently exposed to the atmosphere dehydrate and oxide, developing different mineralogical associations
arranged on planation surfaces. Such planation surfaces are key in the geological knowledge of recent climate
change and landscape evolution. Progressive iron oxide/hydroxide rate and decarbonation can be spectrally
followed on the Holocene sands framing the current marshy area. Such mineralogical changes are geologically
registered on flat surfaces at different heights over the receding shore of the paleolake. Interacting erosion and
sedimentation processes are responsible for the development of the flat morphological surfaces with increasing
dryness. Maps are built for four different morphological units consisting of planation surfaces following chronologically
the receding marsh during the last 2000 years before the present. Interactive spectral responses of mineralogical
associations are described on the imagery, field and laboratory spectra.
their wealth of both flora and fauna, and often considered as natural parks. In the Tablas de Daimiel (La Mancha,
Central Spain), Digital Airborne Imaging Spectrometer data (DAIS 7915) have been analyzed to map geological
processes on areas around the receding wetland which have never been flooded by water in the past. Sediments
permanently exposed to the atmosphere dehydrate and oxide, developing different mineralogical associations
arranged on planation surfaces. Such planation surfaces are key in the geological knowledge of recent climate
change and landscape evolution. Progressive iron oxide/hydroxide rate and decarbonation can be spectrally
followed on the Holocene sands framing the current marshy area. Such mineralogical changes are geologically
registered on flat surfaces at different heights over the receding shore of the paleolake. Interacting erosion and
sedimentation processes are responsible for the development of the flat morphological surfaces with increasing
dryness. Maps are built for four different morphological units consisting of planation surfaces following chronologically
the receding marsh during the last 2000 years before the present. Interactive spectral responses of mineralogical
associations are described on the imagery, field and laboratory spectra.
Article Details
How to Cite
Riaza, A., Garcia-Melendez, E., Suárez, M., Hausold, A., Beisl, U. and van der Werff, H. (2006) “Mapping of semi-arid iron bearing red sands on emerged areas around lake marshes (Tablas de Daimiel, Spain) using hyperspectral DAIS 7915 spectrometer data”, Annals of Geophysics, 49(1). doi: 10.4401/ag-3171.
Issue
Section
OLD
Open-Access License
No Permission Required
Istituto Nazionale di Geofisica e Vulcanologia applies the Creative Commons Attribution License (CCAL) to all works we publish.
Under the CCAL, authors retain ownership of the copyright for their article, but authors allow anyone to download, reuse, reprint, modify, distribute, so long as the original authors and source are cited. No permission is required from the authors or the publishers.
In most cases, appropriate attribution can be provided by simply citing the original article.
If the item you plan to reuse is not part of a published article (e.g., a featured issue image), then please indicate the originator of the work, and the volume, issue, and date of the journal in which the item appeared. For any reuse or redistribution of a work, you must also make clear the license terms under which the work was published.
This broad license was developed to facilitate open access to, and free use of, original works of all types. Applying this standard license to your own work will ensure your right to make your work freely and openly available. For queries about the license, please contact ann.geophys@ingv.it.