Glaciers

About 100 million years

Because we are leaving behind an Ice age, and as the Earth gradually warms, the glaciers formed in the Ice age begin to melt.

Most glaciers are melting, a few are adding mass. Glaciers melt when their mass budget becomes negative because there is too much melt caused by warmer temperatures, not enough precipitation to balance that, or both. The amount of precipitation over all glaciers and ice sheets is generally not changing too much, just shifting from place to place and moving through the vagaries of natural variability. However, temperature is rising, particularly in the ablation zones of glaciers, and this is what is causing them to melt more than they would. We stopped coming out of the last ice age (i.e. temperatures stopped warming as a result of orbital forcings and their feedbacks associated with this particular ice age) several thousands of years ago; this could not possibly be the cause of increased mass loss today.

The process of glaciers melting is called retreatment. As a glacier is in the process of retreating, the volume of water begins to melt. The water level had dropped by 25 m by only the terminus as of the Helm Glacier for example! Imagine how large of a decrease the water level could have had if all the water lost in total was calculated! The water than effects the regions surrounding the glaciers, as in the Helm glacier, that contain vast quantities of fresh water. Since these glaciers are made out of fresh water resources, the more water the glaciers lose, the more water we lose out on too. This will affect our water systems, the global water system, and us humans greatly. 68.7% of the earth's fresh water resources are in icecaps and glaciers, but since they are continually melting away, the water is going to have an impact on plants and animals as well (since they depend on the water we drink). The volume of ice use to be so large in the Helm Glacier, but that ice over time began to melt, resulting in serious damage to those who wait in the future.

The factor that most contributes to a glacier advancing or retreating all depends on the temperature, climate, and weather in the atmosphere. When the temperature of the atmosphere rises, the climate and weather is affected due to an indirect measure of climate change. Global temperatures have increased by 0.3-0.6*C since the last century, and in response to increasing temperatures, glaciers have generally been thinned out, loss of mass, and have been retreated over the last 100 years. The temperature of earth had been conducted by surveyors that humans have been the result to this Jurassic climate change. Also known as global warming, humans are adding large quantities of fine particles (aerosols) into our atmosphere, mainly from industrial and agriculture activities. Even though most of these particles have been circulating and renewing itself, aerosols still affect the radiation balance. This effect is adding to the nature of particles as well, and in our case, glaciers. Global warming affects the temperatures, and current climates that transfer in the atmosphere (from the atmosphere the heat is naturally moved to earth). If humans could someway stop the act of global warming (though many are choosing not to), this would result to advancement in global glaciers. Until then, glaciers will remain in the process of retreating.

Overall, retreating is the overall result of our global glaciers today. Glaciers are affecting our water systems which is our one and only water source. Water is important and is a necessity in our lives, and it is in our hands to fix this. Advancing has not been in power for a long time, but hopefully with everyone in our hands, we can fix this problem as a whole. As we have been taught, it is not only us mammals who must depend on the earth's limited supply of fresh water, but the different plants and animal species that live within it. Think back to the main contributer to retreatment on the helm glacier, what could you do to fix this problem? Therefore, that is why glaciers are in the process of melting.

An advancing glacier is like an ice making machine with the output being dropped on a conveyor belt. The ice travels along until the temperature of the surrounding environment stops it from proceeding any further by causing it to melt. When a glacier recedes, the conveyor belt is not switched to "reverse", it just means that the point at which it melts is moving closer to the ice making machine.

you have to use toure brian not search it

New icebergs float on sea water and are broken away from the ice floe in a process called calving. The iceberg calvesoff the floe.

1. A rise in the temperature of the air around the glacier.
2. Increasing accumulation of dust [from volcanic eruptions for one example] on the glacier's surface. The "dirtier" the the surface of the glacier's ice, the less sunlight it reflects, and the more sunlight it absorbs, increasing its surface temperature, and causing increased melting.
3. Glaciers are melting because of Global Warming . The toxic chemicals that come from things like cars and factories make an attraction to the sun there for it heats up the earth . This is actually very bad because glaciers cool the atmosphere , and if they're gone the whole entire planet will heat up the a degree where nothing can live on it , and that also goes for the icebergs etc .

The process of a glacier melting takes place over a long period of time of increased temperatures. Only increased temperatures can melt an object the size of a glacier.

in all directions

glaciers move slowly but when theres alot of rain the water and the glaciers move faster

Glaciers shape the Earth's surface through processes like erosion, transportation of sediments, and deposition. As glaciers move, they scrape and carve the land, creating features like valleys, fjords, and cirques. When glaciers melt, they leave behind sediment and rock formations that contribute to the landscape.

Icebergs are not to be confused with ice cubes. Any mass of ice will have 7/8 underwater but the glacial chunks can only be calculated vertically, not horizontally. Sources vary as to the height of the iceberg that hit Titanic but even with perfect visibility, the height may-or-may-not have any bearing.

Glaciers or moving, shifting and melting constantly. The worst that could happen is if too meltwater was created by the melting glacier it would cause a flood downstream.

Summer, unless you enjoy TRULY dangerous weather conditions.

Most trails are not open until July, and the NPS strongly advises against hiking on a closed trail. By late September, Going to the Sun Road is closed. Thus, June can be too early and October is definitely too late for any but VERY hardy outdoorspeople.

The Mendenhall Glacier is located near the capital of Alaska, Juneau. It is a short drive from the city and can be found in the Tongass National Forest.

valley glaciers are constrained by their surroundings. And ice sheets dont

Ice sheets are large

siachen and balotro glaciers

Look at textbook EARTH SCIENCE pg: 198-200

it is when a glacier moves into a large rock mass, cutting its way through.

The Himalayas are one of the mountain ranges that are growing right now !!

Mountain ranges get bigger for a variety of reasons, two of these include volcanic eruptions and seismic uplift.

Some mountains are also volcanoes, when these erupt, there are several different types, they can produce molten lava as well as the ash, gas and other products. The lava then flows out from the vents or holes in the mountain and cover the mountain sides. The lava then cools down, because it is actually liquid rock at several thousand degrees celcius, and turns to hard solid rock. This then can happen over a long period of time and increase the size of the mountain.

Another way to increase the size of a mountain range is by seismic uplift, the best example of this today is the Himalayan Mountain range. The earths crust is solid but split into several different plates. These plates move very slowly over the molten magma underneath at about the speed that your finger nails grow (several centimetres a year) and the Indian Plate is pushing up against the Eurasian Plate, this squashing the rocks very slowly but with huge amounts of power and as the Eurasian Plate is moving against the Indian Plate the rock is getting pushed upwards because the crust has nowhere else to go, this created the Himalayas and they are still getting taller.

If you are still interested look up plate tectonics, continental drift and the cycle of mountain building because erosion wears away at all mountain ranges, the building is only one part of the cycle !!

Glaciers formed during the ice age when earth was so cold that water in the coldest places just became frozen mountains, called icebergs.

I'm sure that rivers cause erosion by getting in cracks of rocks and when they freeze, it expands and crumbles the rock but im not exactly sure so don't count on me!!! that's just my opinion!!

In the sense that it makes it known that the rock existed before a period of glaciation, yes.