These are a new way of remotely monitoring the environment in order to understand fundamental processes and hazard warnings. see paper
This is the first Environmental
Sensor Network to monitor the subglacial environment at
Nine probes were emplaced beneath 70m of ice during the summer of 2004. These measure temperature, stress, tilt, pressure, and resistivity, and transmit their data by radio to the glacier surface, where the data is transmitted to the web. A further eight probes were inserted during the summer of 2005, by February 2006, 3 probes were continuing to send their data everyday. The live probe data can be seen at here (probes 10,12 and 15 are active).