Studies of the Laboratory of Glaciology and Environmental Geophysics, University of Grenoble and the Laboratory of Glaciology and Geophysics of the Environment of the Federal Polytechnic School in Zurich, suggest that glacial extensions are due to a significant increase precipitation, but to a significant drop in temperatures.
Ucwaningo olwenziwe yiLaboratory of Glaciology and Geophysics of the Environment of the University of Grenoble and of the Laboratory of Glaciology and Geophysics of the Environment of the Federal Polytechnic School of Zurich, lukhombisa ukuthi ukunwetshwa kweqhwa kungenxa yokwanda okukhulu kwezulu, kepha ukwehla okukhulu kwamazinga okushisa.