What causes the melting of the glacier except global warming?
For the great answer, which is great by the way, you might want to also add subterranean crustal warming to that mix as you are not just getting it from the top down but also from the bottom up which may account for the faster than estimated melting in some locations which also increases the erosional speed effects of the water itself on the ice and the increased frictional heat generated by increased speed of movement generated by the glacier itself since the water act like a lubricant..
