This is a picture showing how sensitive Antarctic Ice is to the ice sheet's initial geometry, over 1000 years time. It gives a glimpse of how important it is to get something as simple as the initial ice geometry correct when simulating the ice sheet over long spans of time. [From a forthcoming paper on our development of the adjoint model of SICOPOLIS.]

Here is an image of ice breaking from the bottom up as it transitions from resting on solid ground to floating in the ocean. When it bends as it goes afloat, it breaks. The breaking eventually reaches to the surface, and an iceberg is created. The model we developed here helps us determine undiscovered relationships to help better predict the retreat rates of glaciers (from Logan et al., 2017, The Cryosphere, doi:10.5194/tc-11-117-2017).

This is a picture of a retreat prediction for Thwaites Glacier (a really important and quickly changing glacier in Antarctica) produced by DynEarthSol3D, a thermo-mechanical numerical model I have helped develop to study ice flow and deformation (see the BitBucket link below).

A LandSAT image of Thwaites Glacier (Logan et al., 2013) showing how bottom cracking is determining (at least in 2013) the current retreat rate at Thwaites Glacier.

A panel from the above (linked) poster showing how this model works in the case of Thwaites Glacier, to produce the shapes that lead to retreat there, like in the picture to the left.

Another simulation of the semi-brittle deformation of ice using DynIceSol3D. This one shows how we calibrated our numerical model (of a small 2D plug of ice) to match laboratory-derived stress-strain relationships (the color in the image corresponds to accumulation of strain).

This is a link to my BitBucket page containing DynEarthSol3D-ICE (DICE) -- a branch of Eh Tan's and Eunseo Choi's DynEarthSol3D, specific to ice. For more information on how it works, check out my paper published in The Cryosphere detailing its specs and uses.

Here's a link to some pictures I took in Patagonia. (Note: they're old.)

A small simulation of Arolla Glacier showing the development of surface cracks using DynIceSol (might be hard to see: in the bottom image, the little black lines at the surface) from a presentation in Chamonix in 2014.

This is a coarse snapshot of ice-penetrating radar collected in Antarctica by UT Professor Dr. Ginny Catania. It shows diffraction hyperbole that image cracks in the ice. The cracks in this image form at the bottom side of the ice and propagate upward, vertically. Sometimes they propagate through the entire ice thickness. Make sure you're far away when they do! =)

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Image of a hanging glacier dropping an ice block in finite time. Demonstrates the adaptive remeshing in DynEarthSol3D (left-ish column) and our semi-brittle material model (right-ish) column.

Here's my cv: curry-logan_cv.pdf