commit 4de846e13d01be826d446f210125407fc06133c2
parent 3a656e6892c31528fff19d36d1e1986d519337b7
Author: Anders Damsgaard <anders@adamsgaard.dk>
Date: Sun, 27 Jun 2021 20:27:17 +0200
add james paper post
Diffstat:
3 files changed, 102 insertions(+), 0 deletions(-)
diff --git a/pages/011-james.cfg b/pages/011-james.cfg
@@ -0,0 +1,7 @@
+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
@@ -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 journal webpage</a> (open access)</li>
+ <li><a href="https://src.adamsgaard.dk/seaice-experiments">Source code for producing figures</a></li>
+ <li><a href="https://src.adamsgaard.dk/Granular.jl">Simulation software</a></li>
+</ul>
diff --git a/pages/011-james.txt b/pages/011-james.txt
@@ -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
