Asked in ScienceSnow and IceLandformsGlaciers
Snow and Ice
Is the world in a glacier retreat or glacier advance?
December 11, 2007 3:21PM
Glaciers are advancing and retreating all the time. During the summer most will be retreating, during the winter most will be advancing. Therefore the world is not in a 'glacial advance or retreat' because each glacier is independent.
Asked in Global Warming, Glaciers
Under what conditions does a glacier front advance?
Asked in Science
What factors determine whether a glacier will advance or retreat?
Asked in Geology, Global Warming
Under what circumstances will the front of the glacier advance Retreat Remain history?
Asked in Global Warming
Under what circumstances will the front of a glacier advance?
Asked in Glaciers
How do glaciers advance and retreat?
Glaciers advance from the weight of new snow on their very tops adding enough weight so that the icy glacier is pushed downhill. This is always happening, at least a little. A glacier's retreat is caused by melting at the lower end. Glaciers are bodies of Ice that are generally located in mountain Valleys. They vary of size and can contain hundreds of liters of waters. The biggest Glacier is located in Antarctica; it is 514km long and 40km wide. It is called the Lambert-Fisher Glacier. It is absolutely massive and it is, despite Global Warming, growing. The sheer weight of a glacier combined with gravity enforces it to descend from mountain tops where they are first formed due to the lower temperatures found there. When they descend, they erode the surface of the soil away and they pluck at the mountain. These two processes allow the formation of a typical Glacier trough, characterized by its U-form. Glaciers periodically retreat and advance, when Glaciers grow, they advance. If a glacier advances, it implies that accumulation of snow is greater than the melting of snow. However, when Glaciers shrink, they retreat. If a glacier retreats, it implies that accumulation of snow is insufficient and lesser than the melting of the snow.
Asked in Geology
What factor could contribute to a glacier advancing instead of retreating?
Asked in Synonyms and Antonyms, Word Games
What is a word that is opposite of the word retreat?
Asked in Glaciers
When a glacier moves forward?
A glacier is always moving forward (downhill). In the winter, the glacier usually isn't melting and its front edge (or "toe") will advance downhill. In the summer, the toe of the glacier usually melts faster than the glacier is moving forward, causing the front edge of the glacier to recede. If the recession in the summer is greater than the advance in the winter, then the glacier as a whole is receding and will eventually disappear. That is what is currently happening to most of the glaciers in North America and many other places around the world.
Asked in Geology, Snow and Ice, Volcanoes, Glaciers
What states do not contain an active glacier?
Asked in Glaciers
What is a Glaciers in retreat?
A glacier is a 'river' of ice. In cold places where precipitation falls as snow rather than rain, the snow thickness builds up and up and forms a field of ice as its compacts. Masses of ice are not solid but flow very slowly down hill under the force of gravity. This ice flow is called a glacier. Glaciers flow down hill and as they do so it gets warmer and the ice at the tip of the glacier melts (they turn into rivers of water). If the climate is cold then this melting happens less fast than the snow is supplying new ice at the top and the bottom of the glacier will advance (the glacier gets longer). If the climate is warming then the melting happens faster than the snow is supplying new ice and the bottom of the glacier will retreat back up towards the snow/ice field (the glacier gets shorter) All of earths glaciers are currently getting shorter - the Glaciers are in retreat. This is because earths climate is getting slightly warmer.