A couple of summers ago I was involved in a project, called Glacsweb, that seeks to discover what happens underneath a glacier (photo above) as it slowly moves downhill. Glacsweb has been subject to a recent BBC News article. Observing what happens to the rocks as they are broken, worn and moved under a glacier presents tremendous technical difficulties. Glaciers often exist in remote places that can be inaccessible for most of the year. Observing the processes under a glacier in “real time” presents an even greater challenge. Sometimes insight can be gained from tunnels created by moving water as it flows underneath the glacier (see photo below) but these are likely to flood and therefore dangerous places for researchers to spend time.
Glacsweb seeks to address this problem by placing intelligent pebbles (photo below) under the glacier. These pebbles can beam back to the UK, via a base station on the glacier surface, information about their orientation, temperature, approximate location, and pressure buy ciprofloxacin