首页> 外文期刊>Journal of Glaciology >Coupling ice flow models of varying orders of complexity with the Tiling method
【24h】

Coupling ice flow models of varying orders of complexity with the Tiling method

机译:使用平铺方法将复杂程度不同的冰流模型耦合

获取原文
获取原文并翻译 | 示例
           

摘要

Ice flow numerical models are essential for predicting the evolution of ice sheets in a warming climate. Recent research emphasizes the need for higher-order and even full-Stokes flow models, instead of the traditional shallow-ice approximation, whose assumptions are not valid in certain critical areas. These higher-order models are, however, computationally intensive and difficult to use at the continental scale. Here we present a new technique, the Tiling method, to couple ice flow models of varying orders of complexity. The goal of the method is to limit the spatial extent of where higherorder models are applied to reduce the computational cost, while maintaining the model precision. We apply this method on synthetic geometries to demonstrate its practical use. We first use a geometry for which all models yield the same results to check the consistency of the method. Then we apply our method to a geometry for which a full-Stokes model is required in the vicinity of the ice front. Our results show that the hybrid models present significant improvements over mono-model approaches and reduce computational times.
机译:冰流数值模型对于预测变暖气候中冰盖的演化至关重要。最近的研究强调需要高阶甚至全斯托克斯流模型,而不是传统的浅冰近似,后者的假设在某些关键区域无效。但是,这些高阶模型的计算量很大,并且很难在大陆范围内使用。在这里,我们提出了一种新技术,即平铺方法,以耦合复杂程度不同的冰流模型。该方法的目标是限制应用高阶模型的空间范围,以减少计算成本,同时保持模型精度。我们将此方法应用于合成几何体以证明其实际用途。我们首先使用所有模型都产生相同结果的几何来检查方法的一致性。然后,将我们的方法应用于需要在冰面附近建立全斯托克斯模型的几何形状。我们的结果表明,混合模型比单模型方法具有显着改进,并减少了计算时间。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号