tadd james paper post - adamsgaard.dk - my academic webpage | |
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commit 4de846e13d01be826d446f210125407fc06133c2 | |
parent 3a656e6892c31528fff19d36d1e1986d519337b7 | |
Author: Anders Damsgaard <[email protected]> | |
Date: Sun, 27 Jun 2021 20:27:17 +0200 | |
add james paper post | |
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diff --git a/pages/011-james.cfg b/pages/011-james.cfg | |
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+filename=james.html | |
+title=New paper out on sea ice ridging | |
+description=Simulation of sea ice physics | |
+id=james | |
+tags=science, glaciology, sea ice | |
+created=2021-06-27 | |
+updated=2021-06-27 | |
diff --git a/pages/011-james.html b/pages/011-james.html | |
t@@ -0,0 +1,49 @@ | |
+<p>Considerable areas of the polar oceans are covered by sea ice, | |
+formed by frozen sea water. The extent and thickness of the ice | |
+pack influences local and regional ecology and climate. The ice | |
+thickness is particularly important for the ice-cover survival | |
+during warm summers. Wind and ocean currents compress and shear the | |
+sea ice, and can break and stack ice into ridges. Current sea ice | |
+models assume that the ice becomes increasingly rigid as ridges of | |
+ice rubble grow. Modeling sea ice as bonded particles, we show that | |
+ice becomes significantly weaker right after the onset of ridge | |
+building. We introduce a mathematical framework that allows these | |
+physical processes to be included in large-scale models.</p> | |
+ | |
+<p>Today a new paper of mine is published in the AGU-group journal | |
+<a href="https://agupubs.onlinelibrary.wiley.com/journal/19422466">Journal | |
+of Advances in Modeling Earth Systems</a>, and it is written with | |
+co-authors <a href="https://scholar.princeton.edu/aos_sergienko/home">Olga | |
+Sergienko</a> and <a | |
+href="https://www.gfdl.noaa.gov/alistair-adcroft-homepage/">Alistair | |
+Adcroft</a> at Princeton University (New Jersey, USA). I use my | |
+program <a href="https://src.adamsgaard.dk/Granular.jl">Granular.jl</a> | |
+for the simulations.</p> | |
+ | |
+<h2>Abstract</h2> | |
+<blockquote> | |
+<b>The Effects of Ice Floe-Floe Interactions on Pressure Ridging in Sea Ice | |
+</b> | |
+<br><br> | |
+The mechanical interactions between ice floes in the polar sea-ice | |
+packs play an important role in the state and predictability of the | |
+sea-ice cover. We use a Lagrangian-based numerical model to investigate | |
+such floe-floe interactions. Our simulations show that elastic and | |
+reversible deformation offers significant resistance to compression | |
+before ice floes yield with brittle failure. Compressional strength | |
+dramatically decreases once pressure ridges start to form, which | |
+implies that thicker sea ice is not necessarily stronger than thinner | |
+ice. The mechanical transition is not accounted for in most current | |
+sea-ice models that describe ice strength by thickness alone. We | |
+propose a parameterization that describes failure mechanics from | |
+fracture toughness and Coulomb sliding, improving the representation | |
+of ridge building dynamics in particle-based and continuum sea-ice | |
+models. | |
+</blockquote> | |
+ | |
+<h2>Links and references:</h2> | |
+<ul> | |
+ <li><a href="https://doi.org/10.1029/2020MS002336">Publication on jour… | |
+ <li><a href="https://src.adamsgaard.dk/seaice-experiments">Source code… | |
+ <li><a href="https://src.adamsgaard.dk/Granular.jl">Simulation softwar… | |
+</ul> | |
diff --git a/pages/011-james.txt b/pages/011-james.txt | |
t@@ -0,0 +1,46 @@ | |
+Considerable areas of the polar oceans are covered by sea ice, | |
+formed by frozen sea water. The extent and thickness of the ice | |
+pack influences local and regional ecology and climate. The ice | |
+thickness is particularly important for the ice-cover survival | |
+during warm summers. Wind and ocean currents compress and shear the | |
+sea ice, and can break and stack ice into ridges. Current sea ice | |
+models assume that the ice becomes increasingly rigid as ridges of | |
+ice rubble grow. Modeling sea ice as bonded particles, we show that | |
+ice becomes significantly weaker right after the onset of ridge | |
+building. We introduce a mathematical framework that allows these | |
+physical processes to be included in large-scale models. | |
+ | |
+Today a [1]new paper of mine is published in the AGU-group journal | |
+[1]Journal of Advances in Modeling Earth Systems, and it is written | |
+with co-authors Olga Sergienko and Alistair Adcroft at Princeton | |
+University (New Jersey, USA). I use my program [5]Granular.jl for | |
+the simulations. | |
+ | |
+ | |
+## Abstract | |
+ | |
+The Effects of Ice Floe-Floe Interactions on Pressure Ridging in Sea Ice | |
+ | |
+The mechanical interactions between ice floes in the polar sea-ice | |
+packs play an important role in the state and predictability of the | |
+sea-ice cover. We use a Lagrangian-based numerical model to investigate | |
+such floe-floe interactions. Our simulations show that elastic and | |
+reversible deformation offers significant resistance to compression | |
+before ice floes yield with brittle failure. Compressional strength | |
+dramatically decreases once pressure ridges start to form, which | |
+implies that thicker sea ice is not necessarily stronger than thinner | |
+ice. The mechanical transition is not accounted for in most current | |
+sea-ice models that describe ice strength by thickness alone. We | |
+propose a parameterization that describes failure mechanics from | |
+fracture toughness and Coulomb sliding, improving the representation | |
+of ridge building dynamics in particle-based and continuum sea-ice | |
+models. | |
+ | |
+ | |
+References: | |
+ | |
+[1] https://doi.org/10.1029/2020MS002336 | |
+[2] https://agupubs.onlinelibrary.wiley.com/journal/19422466 | |
+[3] https://scholar.princeton.edu/aos_sergienko/home | |
+[4] https://www.gfdl.noaa.gov/alistair-adcroft-homepage/ | |
+[5] https://src.adamsgaard.dk/seaice-experiments |