<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD Journal Publishing DTD v3.0 20080202//EN" "https://jats.nlm.nih.gov/nlm-dtd/publishing/3.0/journalpublishing3.dtd">
<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" article-type="research-article" specific-use="SMUR" dtd-version="3.0" xml:lang="en">
<front>
<journal-meta>
<journal-id journal-id-type="publisher">TCD</journal-id>
<journal-title-group>
<journal-title>The Cryosphere Discussions</journal-title>
<abbrev-journal-title abbrev-type="publisher">TCD</abbrev-journal-title>
<abbrev-journal-title abbrev-type="nlm-ta">The Cryosphere Discuss.</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub">1994-0440</issn>
<publisher><publisher-name></publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/tc-2020-100</article-id>
<title-group>
<article-title>New insights into the drainage of inundated Arctic polygonal tundra using fundamental hydrologic principles</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Harp</surname>
<given-names>Dylan R.</given-names>
<ext-link>https://orcid.org/0000-0001-9777-8000</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Zlotnik</surname>
<given-names>Vitaly</given-names>
<ext-link>https://orcid.org/0000-0002-9601-9464</ext-link>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Abolt</surname>
<given-names>Charles J.</given-names>
<ext-link>https://orcid.org/0000-0001-6052-199X</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Newman</surname>
<given-names>Brent D.</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>Atchley</surname>
<given-names>Adam L.</given-names>
<ext-link>https://orcid.org/0000-0003-2203-1994</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Jafarov</surname>
<given-names>Elchin</given-names>
<ext-link>https://orcid.org/0000-0002-8310-3261</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Wilson</surname>
<given-names>Cathy J.</given-names>
<ext-link>https://orcid.org/0000-0001-9896-0912</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los Alamos, NM, 87544</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Earth and Atmospheric Sciences Department, University of Nebraska, Lincoln, NE, 68588-0340</addr-line>
</aff>
<pub-date pub-type="epub">
<day>05</day>
<month>05</month>
<year>2020</year>
</pub-date>
<volume>2020</volume>
<fpage>1</fpage>
<lpage>26</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2020 Dylan R. Harp et al.</copyright-statement>
<copyright-year>2020</copyright-year>
<license license-type="open-access">
<license-p>This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this licence, visit <ext-link ext-link-type="uri"  xlink:href="https://creativecommons.org/licenses/by/4.0/">https://creativecommons.org/licenses/by/4.0/</ext-link></license-p>
</license>
</permissions>
<self-uri xlink:href="https://tc.copernicus.org/preprints/tc-2020-100/">This article is available from https://tc.copernicus.org/preprints/tc-2020-100/</self-uri>
<self-uri xlink:href="https://tc.copernicus.org/preprints/tc-2020-100/tc-2020-100.pdf">The full text article is available as a PDF file from https://tc.copernicus.org/preprints/tc-2020-100/tc-2020-100.pdf</self-uri>
<abstract>
<p>&lt;p&gt;The pathways and timing of drainage from inundated ice-wedge polygon centers in a warming climate have important implications for carbon flushing, advective heat transport, and transitions from carbon dioxide to methane dominated emissions. This research helps to understand this process by providing the first in-depth analysis of drainage from a single polygon based on fundamental hydrogeological principles. We use a recently developed analytical solution to evaluate the effects of polygon aspect ratios (radius to thawed depth) and hydraulic conductivity anisotropy (horizontal to vertical hydraulic conductivity) on drainage pathways and temporal depletion of ponded water heights of inundated ice-wedge polygon centers. By varying the polygon aspect ratio, we evaluate the effect of polygon size (width), inter-annual increases in active layer thickness, and seasonal increases in thaw depth on drainage. One of the primary insights from the model is that most inundated ice-wedge polygon drainage occurs along an annular region of the polygon center near the rims. This implies that inundated polygons are most intensely flushed by drainage in an annular region along their horizontal periphery, with implications for transport of nutrients (such as dissolved organic carbon) and advection of heat towards ice wedge tops. The model indicates that polygons with large aspect ratios and high anisotropy will have the most distributed drainage. Polygons with large aspect ratio and low anisotropy will have their drainage most focused near the their periphery and will drain most slowly. Polygons with small aspect ratio and high anisotropy will drain most quickly.&lt;/p&gt;</p>
</abstract>
<counts><page-count count="26"/></counts>
<funding-group>
<award-group id="gs1">
<funding-source>U.S. Department of Energy</funding-source>
<award-id>ERKP757</award-id>
</award-group>
</funding-group>
</article-meta>
</front>
<body/>
<back>
</back>
</article>