Accumulation can occur by snowfall instantly over the glacier surface but also from avalanches that deposit snow from slopes adjacent into the glacier and from snow remaining blown onto the glacier from surrounding parts. In some locations with the Earth, condensation of h2o vapor on glacier surfaces adds to accumulation. https://kameronxchkp.goabroadblog.com/35103063/the-fact-about-kiss918-that-no-one-is-suggesting