Eishohlräume

Eishohlräume are natural or anthropogenic cavities within glaciers or ice sheets that contain liquid water. These features are typically found at the base of glaciers or within the ice mass itself. The formation of eishohlräume is primarily driven by geothermal heat from the Earth's interior or frictional heat generated by ice movement. Surface meltwater can also contribute to their formation and sustenance, especially in warmer climates.

The size and shape of eishohlräume vary significantly, ranging from small pockets to vast subglacial lakes. These cavities can be dynamic, with their dimensions changing over time due to ice flow, melting, and refreezing. The water within these spaces can be under significant pressure, influencing the stability of the overlying ice.

Eishohlräume play a crucial role in glacier dynamics. The presence of liquid water at the glacier base can reduce friction, leading to faster ice flow. This can have significant implications for glacier behavior, including the potential for increased meltwater discharge and contributing to sea-level rise. Researchers study eishohlräume to better understand glacier hydrology, ice flow mechanics, and the impact of climate change on ice masses. Studying these features often involves techniques such as radar surveys and seismic imaging.