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<front>
<journal-meta>
<journal-id journal-id-type="publisher">ISPRS-Archives</journal-id>
<journal-title-group>
<journal-title>The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences</journal-title>
<abbrev-journal-title abbrev-type="publisher">ISPRS-Archives</abbrev-journal-title>
<abbrev-journal-title abbrev-type="nlm-ta">Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub">2194-9034</issn>
<publisher><publisher-name>Copernicus Publications</publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/isprsarchives-XL-7-W3-777-2015</article-id>
<title-group>
<article-title>Combined use of SAR and optical data for environmental assessments around refugee camps in semiarid landscapes</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Braun</surname>
<given-names>A.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Hochschild</surname>
<given-names>V.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Institute for Geography, University of Tübingen, 72070, Tübingen, Germany</addr-line>
</aff>
<pub-date pub-type="epub">
<day>29</day>
<month>04</month>
<year>2015</year>
</pub-date>
<volume>XL-7/W3</volume>
<fpage>777</fpage>
<lpage>782</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2015 A. Braun</copyright-statement>
<copyright-year>2015</copyright-year>
<license license-type="open-access">
<license-p>This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit <ext-link ext-link-type="uri"  xlink:href="https://creativecommons.org/licenses/by/3.0/">https://creativecommons.org/licenses/by/3.0/</ext-link></license-p>
</license>
</permissions>
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<self-uri xlink:href="https://isprs-archives.copernicus.org/articles/XL-7-W3/777/2015/isprs-archives-XL-7-W3-777-2015.pdf">The full text article is available as a PDF file from https://isprs-archives.copernicus.org/articles/XL-7-W3/777/2015/isprs-archives-XL-7-W3-777-2015.pdf</self-uri>
<abstract>
<p>Over 15 million people were officially considered as refugees in the year 2012 and another 28 million as internally displaced
people (IDPs). Natural disasters, climatic and environmental changes, violent regional conflicts and population growth force people
to migrate in all parts of this world. This trend is likely to continue in the near future, as political instabilities increase and land
degradation progresses.
&lt;br&gt;&lt;br&gt;
EO4HumEn aims at developing operational services to support humanitarian operations during crisis situations by means of
dedicated geo-spatial information products derived from Earth observation and GIS data. The goal is to develop robust, automated
methods of image analysis routines for population estimation, identification of potential groundwater extraction sites and
monitoring the environmental impact of refugee/IDP camps.
&lt;br&gt;&lt;br&gt;
This study investigates the combination of satellite SAR data with optical sensors and elevation information for the assessment of
the environmental conditions around refugee camps. In order to estimate their impact on land degradation, land cover
classifications are required which target dynamic landscapes. We performed a land use / land cover classification based on a
random forest algorithm and 39 input prediction rasters based on Landsat 8 data and additional layers generated from radar texture
and elevation information. The overall accuracy was 92.9 %, while optical data had the highest impact on the final classification.
By analysing all combinations of the three input datasets we additionally estimated their impact on single classification outcomes
and land cover classes.</p>
</abstract>
<counts><page-count count="6"/></counts>
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