Simulations of subglacial discharge and submarine melting during tidewater glacier retreat

Please open README.pdf for instructions on how to use this data package. To first order, subglacial discharge depends on climate, which determines precipitation fluxes and glacier mass balance, and the rate of glacier volume change. For tidewater glaciers, large and rapid changes in glacier volume can occur independent of climate change due to strong glacier dynamic feedbacks. Using an idealized tidewater glacier model, we show that these feedbacks produce secular variations in subglacial discharge and submarine melting that are influenced by subglacial topography.

请查阅README.pdf以获取本数据包的使用说明。一阶近似条件下，冰下径流（subglacial discharge）取决于气候与冰川体积变化速率：气候决定了降水通量与冰川物质平衡。对于潮汐冰川（tidewater glaciers）而言，由于强烈的冰川动力反馈作用，冰川体积可发生大规模快速变化，且该变化可独立于气候变化。本研究采用理想潮汐冰川模型，证明了上述动力反馈会使冰下径流与海底消融（submarine melting）产生长期变化，且该变化受冰下地形（subglacial topography）调控。