GopherProxy

	tadd seaicemuri post - adamsgaard.dk - my academic webpage
	git clone git://src.adamsgaard.dk/adamsgaard.dk
	Log
	Files
	Refs
	README
	LICENSE
	---
	commit 87d11309e2cbb1f1442ad5bdc137f78d0e4a816e
	parent 926cf1de1f3dba28c26745ecf76bbda256567cc6
	Author: Anders Damsgaard <[email protected]>
	Date: Mon, 24 May 2021 20:51:12 +0200

	add seaicemuri post

	Diffstat:
	A pages/009-seaicemuri.cfg \| 7 +++++++
	A pages/009-seaicemuri.html \| 49 +++++++++++++++++++++++++++++…
	A pages/009-seaicemuri.txt \| 42 +++++++++++++++++++++++++++++…

	3 files changed, 98 insertions(+), 0 deletions(-)
	---
	diff --git a/pages/009-seaicemuri.cfg b/pages/009-seaicemuri.cfg
	t@@ -0,0 +1,7 @@
	+filename=seaicemuri.html
	+title=Sea ice talk: Floe-scale ridging in discrete element models for sea ice
	+description=Recorded talk for workshop on granular modeling of sea ice
	+id=seaicemuri
	+tags=science, sea ice
	+created=2021-05-22
	+updated=2021-05-22
	diff --git a/pages/009-seaicemuri.html b/pages/009-seaicemuri.html
	t@@ -0,0 +1,49 @@
	+<p> Below is my recorded talk for an upcoming workshop on <a
	+href="https://seaicemuri.org">modeling the granular nature of sea ice</a>.
	+The workshop is online, and will take place in the week of June 7th,
	+2021. Full abstract:</p>
	+
	+<blockquote>
	+<b>Floe-scale ridging in discrete element models for sea ice</b>
	+<br><br>
	+Anders Damsgaard(1,2), Olga V. Sergienko(1), Alistair Adcroft(1)
	+<br><br>
	+1: Program in Atmospheric and Oceanic Sciences, Princeton University,
	+New Jersey, USA
	+<br>
	+2: Department of Geoscience, Aarhus University, Aarhus, Denmark
	+<br><br>
	+Ridging and rafting through compression and shear increase the
	+thickness and therefore also the melt resilience of sea-ice packs.
	+Present formulations for these mechanisms assume that ice strength
	+is solely governed by ice thickness, and generally treat the ice
	+pack as a continuum where each cell in the spatial discretization
	+includes many individual ice floes. Particle-based sea ice models
	+with granular interactions generally represent the ice on a
	+floe-by-floe basis, meaning that new formulations are required for
	+including ridging. We show through small-scale, high-resolution
	+Discrete Element Method simulations that floe-floe compression
	+encompasses different deformational modes, where elasticity transitions
	+to frictional sliding and resultant strain weakening at the onset
	+of ridging. We present a generalized formulation based on elasticity
	+and Coulomb friction which is suitable for simulating the contact
	+mechanics of ridging in particle-based sea ice models. On a larger
	+scale, this results in ice-pack dynamics prone to stick-slip, strain
	+localization, and limited compressional resistance.</blockquote>
	+
	+<p>Slides and video:</p>
	+
	+<ul>
	+<li><a href="npub/seaicemuri2021-damsgaard.pdf">slides (pdf)</a></li>
	+</ul>
	+
	+<center>
	+ <video poster="video/seaicemuri_damsgaard.jpg"
	+ controls preload="none" class="mediaframe">
	+ <source src="video/seaicemuri_damsgaard.mp4" type="video/mp4">
	+ <a href="video/seaicemuri_damsgaard.mp4">Link</a>
	+ </video>
	+</center>
	+
	+<p>Several <a href="https://seaicemuri.org/presentations.html">other
	+presentations</a> to the workshop are also already available.</p>
	diff --git a/pages/009-seaicemuri.txt b/pages/009-seaicemuri.txt
	t@@ -0,0 +1,42 @@
	+Below is my recorded talk for an upcoming workshop on modeling the
	+granular nature of sea ice[1] The workshop is online, and will take
	+place in the week of June 7th, 2021. Full abstract:
	+
	+ Title: Floe-scale ridging in discrete element models for sea ice
	+
	+ Anders Damsgaard(1,2), Olga V. Sergienko(1), Alistair Adcroft(1)
	+
	+ 1: Program in Atmospheric and Oceanic Sciences, Princeton University,
	+ New Jersey, USA
	+
	+ 2: Department of Geoscience, Aarhus University, Aarhus, Denmark
	+
	+ Ridging and rafting through compression and shear increase the
	+ thickness and therefore also the melt resilience of sea-ice packs.
	+ Present formulations for these mechanisms assume that ice strength is
	+ solely governed by ice thickness, and generally treat the ice pack as
	+ a continuum where each cell in the spatial discretization includes
	+ many individual ice floes. Particle-based sea ice models with
	+ granular interactions generally represent the ice on a floe-by-floe
	+ basis, meaning that new formulations are required for including
	+ ridging. We show through small-scale, high-resolution Discrete
	+ Element Method simulations that floe-floe compression encompasses
	+ different deformational modes, where elasticity transitions to
	+ frictional sliding and resultant strain weakening at the onset of
	+ ridging. We present a generalized formulation based on elasticity
	+ and Coulomb friction which is suitable for simulating the contact
	+ mechanics of ridging in particle-based sea ice models. On a larger
	+ scale, this results in ice-pack dynamics prone to stick-slip, strain
	+ localization, and limited compressional resistance.
	+
	+Slides and video:
	+
	+ - slides: gopher://adamsgaard.dk/9/npub/seaicemuri2021-damsgaard.pdf
	+ - video: https://adamsgaard.dk/video/seaicemuri_damsgaard.mp4
	+
	+Several other presentations to the workshop are also already available[2].
	+
	+
	+References:
	+[1] https://seaicemuri.org
	+[2] https://seaicemuri.org/presentations.html