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	commit dc57d5bcd3f00e53e7ec30d74f02c5fb2f5c5009
	parent 612e18e0f93f07412eec46fd695652d75ea808b3
	Author: Anders Damsgaard <[email protected]>
	Date: Wed, 9 Dec 2020 11:04:28 +0100

	add post on commsenv paper, wait for publication

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	diff --git a/pages/007-commsenv.cfg b/pages/007-commsenv.cfg
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	+filename=commsenv.html
	+title=New paper out on the coupled dynamics of ice, meltwater, and till
	+description=A brief summary of my new paper published in Communications Earth …
	+id=commsenv
	+tags=science, glaciology, ice sheet
	+created=2020-12-09
	+updated=2020-12-09
	diff --git a/pages/007-commsenv.html b/pages/007-commsenv.html
	t@@ -0,0 +1,72 @@
	+<p>The majority of glaciers and ice sheets flow on a bed of loose
	+and thawed sediments. These sediments are weakened by pressurized
	+glacial meltwater, and their lubrication accelerates the ice movement.
	+In formerly-glaciated areas of the world, for example Northern
	+Europe, North America, and in the forelands of the Alps, the landscape
	+is reshaped and remolded by past ice moving the sediments along
	+with its flow. The sediment movement is also observed under current
	+glaciers, both the fast-moving ice streams of the Greenland and
	+Antarctic ice sheets, as well as smaller glaciers in the mountainous
	+areas of Alaska, northern Sweden, and elsewhere. The movement of
	+sediment could be important for the past progression of glaciations,
	+and how resilient marine-terminating ice streams are against sea-level
	+rise.</p>
	+
	+<p>Today, the Nature-group journal <a
	+href="https://www.nature.com/commsenv/">Communications Earth &
	+Environment</a> published my paper on sediment beneath ice. Together
	+with co-authors Liran Goren, University of the Negev (Israel), and
	+Jenny Suckale, Stanford University (California, USA), we present a
	+new computer model that simulates the coupled mechanical behavior
	+of ice, sediment, and meltwater. We calibrate the model against
	+real materials, and provide a way forward for including sediment
	+transport in ice-flow models. We also show that water-pressure
	+variations with the right frequency can create create very weak
	+sections inside the bed, and this greatly enhances sediment transport.
	+I designed the freely-available program <a
	+href="https://src.adamsgaard.dk/cngf-pf">cngf-pf</a> for the
	+simulations.</p>
	+
	+<h2>Abstract</h2>
	+<blockquote>
	+<b>Water pressure fluctuations control variability in sediment flux
	+and slip dynamics beneath glaciers and ice streams</b>
	+<br><br>
	+Rapid ice loss is facilitated by sliding over beds consisting of
	+reworked sediments and erosional products, commonly referred to as
	+till. The dynamic interplay between ice and till reshapes the bed,
	+creating landforms preserved from past glaciations. Leveraging the
	+imprint left by past glaciations as constraints for projecting
	+future deglaciation is hindered by our incomplete understanding of
	+evolving basal slip. Here, we develop a continuum model of
	+water-saturated, cohesive till to quantify the interplay between
	+meltwater percolation and till mobilization that governs changes
	+in the depth of basal slip under fast-moving ice. Our model explains
	+the puzzling variability of observed slip depths by relating localized
	+till deformation to perturbations in pore-water pressure. It
	+demonstrates that variable slip depth is an inherent property of
	+the ice-meltwater-till system, which could help understand why some
	+paleo-landforms like grounding-zone wedges appear to have formed
	+quickly relative to current till-transport rates.
	+</blockquote>
	+
	+<h2>Metrics</h2>
	+<p>It is a substantial task to prepare a scientific publication. The
	+commit counts below mark the number of revisions done during
	+preparation of this paper:</p>
	+
	+<ul>
	+ <li>Main article text: 239 commits</li>
	+ <li>Supplementary information text: 35 commits</li>
	+ <li>Experiments and figures: 282 commits</li>
	+ <li>Simulation software: 354 commits</li>
	+</ul>
	+
	+<h2>Links and references:</h2>
	+<ul>
	+ <li><a href="">Publication on journal webpage</a></li>
	+ <li><a href="">Article PDF</a> (?? MB)</li>
	+ <li><a href="">Supplementary information PDF</a> (?? MB)</li>
	+ <li><a href="https://src.adamsgaard.dk/cngf-pf-exp1">Source code for p…
	+ <li><a href="https://src.adamsgaard.dk/cngf-pf">Simulation software</a…
	+</ul>