ICE RISE Antarctic Ice Rise Response to Sea Level Hysteresis Experiment

Project: Antarctic Ice Rise Response to Sea Level - This project is funded by the Deutsche Forschungsgemeinschaft (DFG) in the framework of the priority programme 1158 “Antarctic Research with comparative investigations in Arctic ice areas” with the project name “Quantifying millennial timescale grounding-line retreat in East Antarctica” and the grant number SCHA 2139/1-1. Furthermore, C. Schannwell was supported by the German Federal Ministry of Education and Research (BMBF) as a Research for Sustainability initiative (FONA) through the PalMod project under the grant number 01LP1915C. R. Drews and V. Višnjević were supported by an Emmy Noether Grant of the Deutsche Forschungsgemeinschaft (DR 822/3-1). We would also like to thank the Deutsches Klimarechenzentrum (DKRZ) for providing compute time. Summary: A number of idealised simulation experiments of ice rises in Antarctica using the finite element model Elmer/Ice are performed. The model solves the Stokes equations and ice rises are formed by a protrusion of the bed into the ice shelf. The surrounding ice is floating and hydrostatic pressure is applied. There is a constant influx of ice on one side of the domain and the ice is allowed to flow out of the domain on the opposite side, subject to hydrostatic pressure. The three simulations in this data repository correspond with three varying basal friction coefficients. To understand the response of ice rises to changes in sea level, we perform transient simulations increasing and decreasing sea level at a constant rate. The data includes vtu and pvtu files, which allow for visualisation of the simulation using Paraview. Each vtu file contains the data for one partition of the domain and the pvtu file allows the entire domain to be visualised. The result files can be used to restart simulations in Elmer/Ice. The mesh generation and simulation initialisation for all experiments (LowFriction, IntermediateFriction and HighFriction) are generated using the code in the Remesh and Init directories in the the LowFriction directory. The code used to run the simulations and the post-processing code are also provided.项目：南极冰隆对海平面变化的响应——本项目由德国研究基金会（Deutsche Forschungsgemeinschaft, DFG）在优先项目1158“北极冰区对比研究的南极研究”框架下资助，项目名称为“量化南极东部千年尺度接地线后退量”，资助编号为SCHA 2139/1-1。此外，C. Schannwell得到德国联邦教育与研究部（Bundesministerium für Bildung und Forschung, BMBF）通过PalMod项目下的可持续性研究倡议（FONA）资助，资助编号为01LP1915C。R. Drews与V. Višnjević获得德国研究基金会的埃米·诺特资助项目（DR 822/3-1）支持。我们同时感谢德国气候计算中心（Deutsches Klimarechenzentrum, DKRZ）提供计算算力支持。 摘要：本研究采用有限元模型Elmer/Ice开展了多组南极冰隆的理想化模拟试验。该模型求解斯托克斯（Stokes）方程，冰隆由基岩突出至冰架区域形成。周边冰体处于漂浮状态，施加静水压力边界条件。模拟区域单侧设置恒定冰流输入，另一侧允许冰体在静水压力约束下流出本区域。本数据集包含三组模拟试验，分别对应三组不同的基底摩擦系数。为探究冰隆对海平面变化的响应规律，本研究开展了以恒定速率升降海平面的瞬态模拟。 数据集包含可通过ParaView实现可视化的vtu与pvtu格式文件：其中vtu文件存储模拟区域单个分区的模拟数据，pvtu文件可实现全区域的可视化加载。结果文件可用于Elmer/Ice的模拟重启。所有试验（低摩擦、中摩擦、高摩擦）的网格生成与模拟初始化代码均存放于LowFriction目录下的Remesh与Init子目录中。本数据集同时提供模拟运行代码与后处理代码。