Impacts of Glacial Isostatic Adjustment on Subglacial Water Routing since the Last Glacial Maximum - Data

README This repository contains data and code necessary to reproduce the results in "Impacts of Glacial Isostatic Adjustment on Subglacial Water Routing since the Last Glacial Maximum" by Linda Pan, Emma J. MacKie, Jerry X. Mitrovica, Stewart S. R. Jamieson, Olga V. Sergienko, Robert P. Ackert Jr., and Kaighin A. McColl. A description of files: G18_LGM_BedTopo | Bed topography at LGM on a degree 512 Gauss-Legendre grid from G18 model (Gomez et al., 2018)G18_LGM_ice | Ice thickness at LGM on a degree 512 Gauss-Legendre grid from G18 model (Gomez et al., 2018) GLlat_512 | Latitude coordinates of degree 512 Gauss-Legendre grid GLlon_512 | Longitude coordinates of degree 512 Gauss-Legendre grid Antarctica_random_field.ipynb | Code used to generate topographic realizations with noise Antarctica residual variogram analysis.ipynb | Code used for residual variogram analysis Bed topography and ice thickness at the LGM for the A24 model (Albrecht et al., 2024) is publicly available. Bed topography, ice surface elevation, and ice thickness at present day are from Bedmachine Antarctica v3 (Morlighem et al., 2020) Calculations of subglacial flow paths were done with Antarctic Mapping Tools (Greene et al., 2017) and TopoToolbox (Schwanghart et al., 2014).本仓库包含复现论文《末次盛冰期（Last Glacial Maximum, LGM）以来冰川均衡调整（Glacial Isostatic Adjustment, GIA）对冰下河道的影响》（作者为Linda Pan、Emma J. MacKie、Jerry X. Mitrovica、Stewart S. R. Jamieson、Olga V. Sergienko、Robert P. Ackert Jr.及Kaighin A. McColl）所需的数据与代码。 文件说明如下： G18_LGM_BedTopo：采用512阶高斯-勒让德（Gauss-Legendre）网格存储的G18模型（Gomez等人，2018）末次盛冰期基岩地形数据 G18_LGM_ice：采用512阶高斯-勒让德网格存储的G18模型（Gomez等人，2018）末次盛冰期冰厚数据 GLlat_512：512阶高斯-勒让德网格的纬度坐标数据 GLlon_512：512阶高斯-勒让德网格的经度坐标数据 Antarctica_random_field.ipynb：用于生成含噪声地形随机场实现样本的代码 Antarctica residual variogram analysis.ipynb：用于开展剩余变异函数分析的代码 A24模型（Albrecht等人，2024）的末次盛冰期基岩地形与冰厚数据可公开获取。 当前南极地区的基岩地形、冰面高程及冰厚数据来源于Bedmachine Antarctica v3（Morlighem等人，2020）。 冰下流动路径的计算采用了Antarctic Mapping Tools（Greene等人，2017）与TopoToolbox（Schwanghart等人，2014）工具包。