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<h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Unteraargletscher</span></h1>
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<div id="mw-content-text" class="mw-body-content mw-content-ltr" lang="de" dir="ltr"><div class="mw-content-ltr mw-parser-output" lang="de" dir="ltr"><table class="wikitable toptextcells float-right infobox vorlage-infobox-gletscher" style="margin-top: 0; background-color:#F2F2F4; width:306px;" summary="Infobox Gletscher">
<tbody><tr>
<th colspan="2" style="background-color:#d0f2fd; text-align:center">Unteraargletscher
</th></tr>
<tr>
<td colspan="2" style="text-align:center; font-size:smaller; padding:2px">
<p><a href="Oberaargletscher" title="Oberaargletscher">Oberaar-</a> (links) und Unteraargletscher (rechts), im Vordergrund dunkelblau der <a href="Tr%C3%BCbtensee" title="Trübtensee">Trübtensee</a>
</p>
</td></tr>
<tr>
<td>Lage
</td>
<td><a href="Kanton_Bern" title="Kanton Bern">Kanton Bern</a>, <a href="Schweiz" title="Schweiz">Schweiz</a>
</td></tr>
<tr>
<td><a href="Gebirge" title="Gebirge">Gebirge</a>
</td>
<td><a href="Berner_Alpen" title="Berner Alpen">Berner Alpen</a>
</td></tr>
<tr>
<td>Länge
</td>
<td>11,8 km (2013)<sup id="cite_ref-bfs_2014_1-0" class="reference"><a href="#cite_note-bfs_2014-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>
</td></tr>
<tr>
<td>Fläche
</td>
<td>20,36 km² (2024)<sup id="cite_ref-GletschermessnetzVAW_2-0" class="reference"><a href="#cite_note-GletschermessnetzVAW-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
</td></tr>
<tr>
<td>Eisvolumen
</td>
<td>3,75 ± 0,87 km³ (2003)<sup id="cite_ref-Farinotti2009_3-0" class="reference"><a href="#cite_note-Farinotti2009-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>
</td></tr>
<tr>
<td><a href="Schweizer_Landeskoordinaten" title="Schweizer Landeskoordinaten">Koordinaten</a>
</td>
<td><span id="text_coordinates" class="coordinates -print"><a class="external text" href="geo:46.565,8.24"><span title="y easting">661442</span> / <span title="x northing">157393</span></a></span><span class="geo noexcerpt" style="display:none"><span class="body"></span><span class="latitude">46.565</span><span class="longitude">8.24</span><span class="elevation">0</span></span>
</td></tr>
<tr>
<td colspan="2" style="vertical-align:middle; text-align:center; background-color:#f2f2f4; padding:0px;">
<table class="centered" style="background-color: var(--dewiki-hintergrundfarbe1);; color: var(--color-base, #202122); border: none; border-collapse: collapse; width: min-content;">
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</td></tr>
<tr>
<td>Entwässerung
</td>
<td><a href="Aare" title="Aare">Aare</a>
</td></tr></tbody></table><div style="display:none">Vorlage:Infobox Gletscher/Wartung/Bildbeschreibung fehlt</div>
<p>Der <b>Unteraargletscher</b> ist der grössere der beiden Quellgletscher der <a href="Aare" title="Aare">Aare</a> im <a href="Berner_Oberland" title="Berner Oberland">Berner Oberland</a>. Er entsteht aus der Vereinigung des Finsteraargletschers und des <a href="Lauteraargletscher" title="Lauteraargletscher">Lauteraargletschers</a> (<i>siehe</i> <a href="Aargletscher" title="Aargletscher">Aargletscher</a>) am sogenannten Abschwung und fliesst ca. 6 km in östlicher Richtung hinunter zum <a href="Grimselsee" title="Grimselsee">Grimselsee</a> im obersten <a href="Haslital" title="Haslital">Haslital</a>.
</p>
<div class="mw-heading mw-heading2"><h2 id="Geschichte">Geschichte</h2></div>
<p>Der heutige Unteraargletscher und erst recht sein sauberer nördlicher Zulauf, der Lauteraargletscher („Klarer Aaregletscher“) war in der Barockzeit eine der Sehenswürdigkeiten der Schweiz und seit 1827 das erste Forschungsobjekt der neu entstehenden Gletscherforschung oder <a href="Glaziologie" title="Glaziologie">Glaziologie</a>. Hier wirkten <a href="Franz_Joseph_Hugi" title="Franz Joseph Hugi">Franz Joseph Hugi</a> und ab 1840 <a href="Louis_Agassiz" title="Louis Agassiz">Louis Agassiz</a>.
</p><p>Die Abbildung von <a href="Joseph_Bettannier" title="Joseph Bettannier">Joseph Bettannier</a> zeigt, dass der Unteraargletscher schon 1840 seine für Touristen unansehnliche, für die Forscher aber hochinteressante Mittelmoräne hatte.
</p><p>Auf dem Unteraargletscher lag auch der grosse Felsblock, den <a href="Caspar_Wolf" title="Caspar Wolf">Caspar Wolf</a> 1775 oder 1776 gemalt hatte, der ab 1840 als <i>L’hôtel des Neuchâtelois</i> als Unterschlupf für die Forscher diente und heute im Grimselsee verschwunden ist.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup>
</p><p>Die Abbruchkante des Unteraargletschers lag im 19. Jahrhundert 560 m tiefer und liegt heute noch etwa 400 m tiefer als die des <a href="Oberaargletscher" title="Oberaargletscher">Oberaargletschers</a>.
</p>
<div style="clear:left;"></div>
<div class="mw-heading mw-heading2"><h2 id="Entwicklung">Entwicklung</h2></div>
<table class="wikitable">
<caption>Entwicklung des Gletschers<sup id="cite_ref-bfs_2014_1-1" class="reference"><a href="#cite_note-bfs_2014-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>
</caption>
<tbody><tr class="hintergrundfarbe5" style="text-align:center">
<td style="text-align:left"><b>Jahr</b></td>
<td><b>1850</b></td>
<td><b>1973</b></td>
<td><b>1999/2000</b></td>
<td><b>2013</b>
</td></tr>
<tr align="right">
<td style="text-align:left"><b>Fläche (km²)</b></td>
<td>33,4</td>
<td>29,5</td>
<td>24,4</td>
<td>20,36 (2024)<sup id="cite_ref-GletschermessnetzVAW_2-1" class="reference"><a href="#cite_note-GletschermessnetzVAW-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
</td></tr>
<tr align="right">
<td style="text-align:left"><b>Länge (km)</b></td>
<td>14,5</td>
<td>12,9</td>
<td>12,2</td>
<td>11,8
</td></tr></tbody></table>
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class="mw-chart-4d73480faebb7e3ebc805579c3062ec295db310c8a7c3bd7886caaa574cdffbfcf52f8fb043a3c79d01561330c3b9e7112440025198ec6f84a3e945d5b3ea4b5__zr2949767-cls-15349000"></path><path d="M3.5 0L21.5 0A3.5 3.5 0 0 1 25 3.5L25 10.5A3.5 3.5 0 0 1 21.5 14L3.5 14A3.5 3.5 0 0 1 0 10.5L0 3.5A3.5 3.5 0 0 1 3.5 0" transform="translate(142.28 40)" fill="#4b77d6" ecmeta_series_index="0" ecmeta_data_index="0" ecmeta_ssr_type="legend" ecmeta_silent="true" class="mw-chart-4d73480faebb7e3ebc805579c3062ec295db310c8a7c3bd7886caaa574cdffbfcf52f8fb043a3c79d01561330c3b9e7112440025198ec6f84a3e945d5b3ea4b5__zr2949767-cls-15349000"></path><text dominant-baseline="central" text-anchor="start" style="font-size:12px;font-family:sans-serif;" xml:space="preserve" x="30" y="7" transform="translate(142.28 40)" fill="var(--color-base, #202122)">Fläche in km²</text><path d="M0 0l115.4 0l0 14l-115.4 0Z" transform="translate(142.28 40)" fill="none" pointer-events="visible" ecmeta_series_index="0" ecmeta_data_index="0" ecmeta_ssr_type="legend" class="mw-chart-4d73480faebb7e3ebc805579c3062ec295db310c8a7c3bd7886caaa574cdffbfcf52f8fb043a3c79d01561330c3b9e7112440025198ec6f84a3e945d5b3ea4b5__zr2949767-cls-15349002"></path><path d="M-164.2 -5l328.4 0l0 26l-328.4 0Z" transform="translate(200 5)" fill="rgb(0,0,0)" fill-opacity="0" stroke="#ccc" stroke-width="0" class="mw-chart-4d73480faebb7e3ebc805579c3062ec295db310c8a7c3bd7886caaa574cdffbfcf52f8fb043a3c79d01561330c3b9e7112440025198ec6f84a3e945d5b3ea4b5__zr2949767-cls-15349000"></path><text dominant-baseline="central" text-anchor="middle" style="font-size:16px;font-family:sans-serif;font-weight:bold;" xml:space="preserve" y="8" transform="translate(200 5)" fill="var(--color-emphasized, #101418)">Flächenentwicklung des Unteraargletschers</text><style>
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<li class="breadcrumb-nav-bullet-prefix">Diagrammdaten:</li>
<li><a href="https://commons.wikimedia.org/wiki/Data:Area_of_Unteraargletscher_by_year.chart" class="extiw external" title="c:Data:Area of Unteraargletscher by year.chart">Definition</a><span class="breadcrumb-nav-bullet-sep"><span aria-hidden="true"> |</span></span></li>
<li><a href="https://commons.wikimedia.org/wiki/Data:Area_of_Unteraargletscher_by_year.tab" class="extiw external" title="c:Data:Area of Unteraargletscher by year.tab">Rohdaten</a><span class="breadcrumb-nav-bullet-sep"><span aria-hidden="true"> |</span></span></li>
<li>Hilfe</li></ul></div><div class="dewiki-chart-source" style="float:left; width:fit-content; font-size:85%;">Quellen:<sup id="cite_ref-bfs_2014_1-2" class="reference"><a href="#cite_note-bfs_2014-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-GletschermessnetzVAW_2-2" class="reference"><a href="#cite_note-GletschermessnetzVAW-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></div><div style="clear:both;"></div></div>
<div style="clear:both;"></div>
<div class="mw-heading mw-heading2"><h2 id="Literatur">Literatur</h2></div>
<ul><li>S.: <cite style="font-style:italic">Auf Firn und Eis</cite>. In: <cite style="font-style:italic"><a href="Die_Gartenlaube" title="Die Gartenlaube">Die Gartenlaube</a></cite>. Heft 34, 1864, <span style="white-space:nowrap">S.<span style="display:inline-block;width:.2em"> </span>532–536</span> (<a href="https://de.wikisource.org/wiki/de:Auf_Firn_und_Eis" class="extiw external" title="s:de:Auf Firn und Eis">Volltext</a> [<a href="Wikisource" title="Wikisource">Wikisource</a>]).<span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rfr_id=info:sid/de.wikipedia.org:Unteraargletscher&rft.atitle=Auf+Firn+und+Eis&rft.au=S.&rft.date=1864&rft.genre=journal&rft.issue=Heft+34&rft.jtitle=Die+Gartenlaube&rft.pages=532-536" style="display:none"> </span></li></ul>
<div class="mw-heading mw-heading2"><h2 id="Weblinks">Weblinks</h2></div>
<div class="sisterproject" style="margin:0.1em 0 0 0;"><div class="noresize noviewer" style="display:inline-block; line-height:10px; min-width:1.6em; text-align:center;" aria-hidden="true" role="presentation"><span class="mw-default-size" typeof="mw:File"><span title="Commons"></span></span></div><b><span class=""><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Unteraargletscher?uselang=de"><span lang="en">Commons</span>: Unteraargletscher</a></span></b> – Sammlung von Bildern, Videos und Audiodateien</div>
<ul><li><a rel="nofollow" class="external text" href="https://www.swisseduc.ch/glaciers/alps/unteraargletscher/index-de.html">Unteraargletscher</a> auf Glaciers online</li>
<li><a rel="nofollow" class="external text" href="https://www.swisseduc.ch/glaciers/alps/unteraargletscher/exkursion/index-de.html">Virtuelle Exkursion auf den Unteraargletscher</a></li>
<li><a rel="nofollow" class="external text" href="https://www.glamos.ch/factsheet#/A54g-11"><i>Factsheet Unteraargletscher</i></a>. In: <i>GLAMOS – Glacier Monitoring in Switzerland</i>.</li>
<li><a rel="nofollow" class="external text" href="https://www2.unil.ch/viatimages/index.php?lang=de&"><i>Viatimages</i>.</a> Universität Lausanne/Schweizerische Nationalbibliothek
<ul><li><a rel="nofollow" class="external text" href="https://www2.unil.ch/viatimages/index.php?lang=de&projet=viaticalpes&module=image&action=detail&IDImage=803">Carte du Glacier inférieur de l’Aar, levée en 1842, d’après les directions de m.Agassiz par Jean Wild, Ingénieur</a> (Öffentliche und universitäre Bibliothek Neuenburg, cote: IGH Txt 129.6.3)</li>
<li><a rel="nofollow" class="external text" href="https://www2.unil.ch/viatimages/index.php?lang=de&projet=viaticalpes&module=image&action=detail&IDImage=804">Réseau trigonométrique de la carte du glacier inférieur de l’Aar (1847)</a> (Öffentliche und universitäre Bibliothek Neuenburg, cote: IGH Txt 129.6.3)</li>
<li><a rel="nofollow" class="external text" href="https://www2.unil.ch/viatimages/index.php?lang=de&projet=viaticalpes&module=image&action=detail&IDImage=1028">Carte du glacier inférieur de l’Aar(1844)</a> (Öffentliche und universitäre Bibliothek Neuenburg, cote: BPUN Q 820 A)</li></ul></li>
<li><a rel="nofollow" class="external text" href="https://map.geo.admin.ch/?zoom=6&X=157138.13&Y=662233.90&layers_indices=4&selectedNode=node_ch.swisstopo.hiks-siegfried1&lang=de&topic=ech&bgLayer=ch.swisstopo.pixelkarte-farbe&layers=ch.swisstopo.hiks-siegfried">Die Aargletscher</a> im Topografischen Atlas der Schweiz von 1870–1922</li></ul>
<div class="mw-heading mw-heading2"><h2 id="Einzelnachweise">Einzelnachweise</h2></div>
<ol class="references">
<li id="cite_note-bfs_2014-1"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-bfs_2014_1-0">a</a></sup> <sup><a href="#cite_ref-bfs_2014_1-1">b</a></sup> <sup><a href="#cite_ref-bfs_2014_1-2">c</a></sup></span> <span class="reference-text"><span class="cite"><a rel="nofollow" class="external text" href="https://www.bfs.admin.ch/bfs/de/home/statistiken/kataloge-datenbanken/tabellen.assetdetail.104836.html"><i>Die grössten Gletscher.</i></a> (xlsx) Bundesamt für Statistik, Raum und Umwelt, 12. Dezember 2014,<span class="Abrufdatum"> abgerufen am 1. November 2020</span>.</span><span style="display: none;" class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2Fde.wikipedia.org%3AUnteraargletscher&rft.title=Die+gr%C3%B6ssten+Gletscher&rft.description=Die+gr%C3%B6ssten+Gletscher&rft.identifier=https%3A%2F%2Fwww.bfs.admin.ch%2Fbfs%2Fde%2Fhome%2Fstatistiken%2Fkataloge-datenbanken%2Ftabellen.assetdetail.104836.html&rft.publisher=Bundesamt+f%C3%BCr+Statistik%2C+Raum+und+Umwelt&rft.date=2014-12-12"> </span></span>
</li>
<li id="cite_note-GletschermessnetzVAW-2"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-GletschermessnetzVAW_2-0">a</a></sup> <sup><a href="#cite_ref-GletschermessnetzVAW_2-1">b</a></sup> <sup><a href="#cite_ref-GletschermessnetzVAW_2-2">c</a></sup></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://www.glamos.ch/factsheet#/A54g-11"><i>Factsheet Unteraargletscher</i></a>. In: <i>GLAMOS – Glacier Monitoring in Switzerland</i>. Abgerufen am 23. Dezember 2025.</span>
</li>
<li id="cite_note-Farinotti2009-3"><span class="mw-cite-backlink"><a href="#cite_ref-Farinotti2009_3-0">↑</a></span> <span class="reference-text">Daniel Farinotti, Matthias Huss, Andreas Bauder, Martin Funk: <i>An estimate of the glacier ice volume in the Swiss Alps.</i> In: <i>Global and Planetary Change.</i> 68: 225–231, 2009 (<a rel="nofollow" class="external text" href="https://www.researchgate.net/publication/234044136_An_estimate_of_the_glacier_ice_volume_in_the_Swiss_Alps">online</a>; PDF; 756 kB).</span>
</li>
<li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text">Louis Agassiz: <i>Études sur les glaciers</i> (Gletscherstudien), <a href="https://de.wikisource.org/wiki/fr:%C3%89tudes_sur_les_glaciers/Explication_des_planches#348" class="extiw external" title="s:fr:Études sur les glaciers/Explication des planches">Anhang: Explication des planches (Erklärung der Abbildungen).</a> Planche 14: Glacier inférieur de l’Aar, partie supérieure, avec la cabane de M. Hugi (Unteraargletscher, oberer Abschnitt mit der Hütte Herrn Hugis)</span>
</li>
<li id="cite_note-5"><span class="mw-cite-backlink"><a href="#cite_ref-5">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://sammlungonline.kunstmuseumbasel.ch/eMP/eMuseumPlus?service=direct/1/ResultDetailView/result.inline.list.t1.collection_list.$TspTitleImageLink.link&sp=13&sp=Sartist&sp=SfilterDefinition&sp=0&sp=1&sp=1&sp=SdetailView&sp=51&sp=Sdetail&sp=0&sp=T&sp=0&sp=SdetailList&sp=0&sp=F&sp=Scollection&sp=l1334">Steckbrief des Gemäldes „Der Lauteraargletscher“</a> Kunstmuseum Basel</span>
</li>
<li id="cite_note-6"><span class="mw-cite-backlink"><a href="#cite_ref-6">↑</a></span> <span class="reference-text"><a href="%C3%89douard_Desor" title="Édouard Desor">Édouard Desor</a>: <cite style="font-style:italic">L’hôtel des Neuchâtelois sur le glacier de l’Aar</cite>. H. Wolfrath et Metzner, Neuchâtel 1867 (<a rel="nofollow" class="external text" href="https://books.google.de/books?id=uGZKmiA-9y8C">eingeschränkte Vorschau</a> in der Google-Buchsuche).<span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rfr_id=info:sid/de.wikipedia.org:Unteraargletscher&rft.au=%C3%89douard+Desor&rft.btitle=L%E2%80%99h%C3%B4tel+des+Neuch%C3%A2telois+sur+le+glacier+de+l%E2%80%99Aar&rft.date=1867&rft.genre=book&rft.place=Neuch%C3%A2tel&rft.pub=H.+Wolfrath+et+Metzner" style="display:none"> </span></span>
</li>
</ol>
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Normdaten (Geografikum): <a href="Gemeinsame_Normdatei" title="Gemeinsame Normdatei">GND</a>: <span class="-print"><a rel="nofollow" class="external text" href="https://d-nb.info/gnd/4499432-1">4499432-1</a></span> | <a href="Virtual_International_Authority_File" title="Virtual International Authority File">VIAF</a>: <span class="-print"><a rel="nofollow" class="external text" href="https://viaf.org/viaf/236107243/">236107243</a></span> </div>
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