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<article language="en">
	<journal>
		<journal_title>The Cryosphere</journal_title>
		<journal_url>www.the-cryosphere.net</journal_url>
		<issn>1994-0416</issn>
		<eissn>1994-0424</eissn>
		<volume_number>4</volume_number>
		<issue_number>1</issue_number>
		<publication_year>2010</publication_year>
	</journal>
	<doi>10.5194/tc-4-53-2010</doi>
	<article_url>http://www.the-cryosphere.net/4/53/2010/</article_url>
	<abstract_html>http://www.the-cryosphere.net/4/53/2010/tc-4-53-2010.html</abstract_html>
	<fulltext_pdf>http://www.the-cryosphere.net/4/53/2010/tc-4-53-2010.pdf</fulltext_pdf>
	<start_page>53</start_page>
	<end_page>65</end_page>
	<publication_date>2010-01-25</publication_date>
	<article_title content_type="html">On the potential of very high-resolution repeat DEMs in glacial and periglacial environments</article_title>
	<authors>
		<author numeration="1" affiliations="1">
			<name>J. Abermann</name>
			<email>jakob.abermann@uibk.ac.at</email>
		</author>
		<author numeration="2" affiliations="2">
			<name>A. Fischer</name>
		</author>
		<author numeration="3" affiliations="2">
			<name>A. Lambrecht</name>
		</author>
		<author numeration="4" affiliations="3">
			<name>T. Geist</name>
		</author>
	</authors>
	<affiliations>
		<affiliation numeration="1" content_type="html">Austrian Academy of Sciences, Commission for Geophysical Research, Vienna, Austria</affiliation>
		<affiliation numeration="2" content_type="html">Institute of Meteorology and Geophysics, University of Innsbruck, Innsbruck, Austria</affiliation>
		<affiliation numeration="3" content_type="html">FFG – Austrian Research Promotion Agency/ALR – Aeronautics and Space Agency, Vienna, Austria</affiliation>
	</affiliations>
	<abstract content_type="html">The potential of high-resolution repeat DEMs was investigated for
glaciological applications including periglacial features (e.g. rock
glaciers). It was shown that glacier boundaries can be delineated using
airborne LIDAR-DEMs as a primary data source and that information on debris
cover extent could be extracted using multi-temporal DEMs. Problems and
limitations are discussed, and accuracies quantified. Absolute deviations of
airborne laser scanning (ALS) derived glacier boundaries from ground-truthed
ones were below 4 m for 80% of the ground-truthed values. Overall, we
estimated an accuracy of +/&amp;minus;1.5% of the glacier area for glaciers larger
than 1 km&lt;sup&gt;2&lt;/sup&gt;. The errors in the case of smaller glaciers did not exceed
+/&amp;minus;5% of the glacier area. The use of repeat DEMs in order to obtain
information on the extent, characteristics and activity of rock glaciers was
investigated and discussed based on examples.</abstract>
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</article>

