دورية أكاديمية
Semi-brittle rheology and ice dynamics in DynEarthSol3D
| العنوان: | Semi-brittle rheology and ice dynamics in DynEarthSol3D |
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| المؤلفون: | L. C. Logan, L. L. Lavier, E. Choi, E. Tan, G. A. Catania |
| المصدر: | The Cryosphere, Vol 11, Iss 1, Pp 117-132 (2017) |
| بيانات النشر: | Copernicus Publications, 2017. |
| سنة النشر: | 2017 |
| المجموعة: | LCC:Environmental sciences LCC:Geology |
| مصطلحات موضوعية: | Environmental sciences, GE1-350, Geology, QE1-996.5 |
| الوصف: | We present a semi-brittle rheology and explore its potential for simulating glacier and ice sheet deformation using a numerical model, DynEarthSol3D (DES), in simple, idealized experiments. DES is a finite-element solver for the dynamic and quasi-static simulation of continuous media. The experiments within demonstrate the potential for DES to simulate ice failure and deformation in dynamic regions of glaciers, especially at quickly changing boundaries like glacier termini in contact with the ocean. We explore the effect that different rheological assumptions have on the pattern of flow and failure. We find that the use of a semi-brittle constitutive law is a sufficient material condition to form the characteristic pattern of basal crevasse-aided pinch-and-swell geometry, which is observed globally in floating portions of ice and can often aid in eroding the ice sheet margins in direct contact with oceans. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1994-0416 1994-0424 |
| Relation: | http://www.the-cryosphere.net/11/117/2017/tc-11-117-2017.pdf; https://doaj.org/toc/1994-0416; https://doaj.org/toc/1994-0424 |
| DOI: | 10.5194/tc-11-117-2017 |
| URL الوصول: | https://doaj.org/article/3531364bd0ee4dc294cc49be5605bf0b |
| رقم الأكسشن: | edsdoj.3531364bd0ee4dc294cc49be5605bf0b |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 19940416 19940424 |
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| DOI: | 10.5194/tc-11-117-2017 |