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Transcript of Helm glacier!!!!
The Helm Glacier is located in Garibaldi Park, British Columbia. It's in the Coast Mountains of Southwest B.C, and if you're wondering what glaciers are; Glaciers are huge masses of ice. Glaciers are formed when snow builds up for several years from snowfall that exceeds to melt. Overtime, as the new snow presses the older snow. The weight causes the snow underneath to turn into ice. The helm glacier was made up originally by the Helm Creek that currently surrounds the glacier now. Also, did you know the helm glacier has an average evaluation of 6,198 feet above sea level.
By how much has the front edge of the glacier that you researched
changed in the past centuries ?
Since 1928, the position of Helm Glacier's front edge has retreated close to 1.4km.. This is the result of the glaciers retreats over years:
Year Behavior Amount of Change (m2) Rate of Change (m/year)
1928 retreat <100 5
1949 retreat 350 17
1969 retreat/advance 300 15
1977 advance 50 6
1990 retreat west -500 38
1996 retreat 30 5
2003 retreat 80 11
In 1928 the helm glacier had an area of 4.3 square km, the glacier has declined by 78% in 2009, andthe area was 0.92 square km. The Helm glacier is retreating so rapidly that it is predicted that in 2050 the helm glacier will disappear.
As the glacier retreats, What happens to the volume of melting water that a mountainous region normally receives? How will this affect streams and rivers downstream?
What factor could contribute to a glacier advancing instead of retreating?
This graph shows the change in the front edge of the 2 glaciers in 100 years. For each glacier calculate how much the terminus has changed in that time.
The Helm glacier !
As the glacier retreats, the glacier will start to melt and will raise the level of the mountainous region it normally receives. The more the glacier melts, the water level will increase.This will affect streams and rivers because when the water melts it will be flowing into the rivers and streams. The water level will increase, so there will be floods and overflow of water in streams and rivers.
A glacier's retreat is caused by melting at the lower end and a glacier advances from the weight of new snow on their very tops adding enough weight so that the icy glacier is pushed downhill. A factor of contributing a glacier from advancing or retreating could be the temperature, if it is cold it will advance, if it is warm it will retreat.
The Helm glacier is retreating/ melting. Glaciers are melting due to global warming, if we don't stop polluting. All of the glaciers will melt. This can cause disasters such as floods due to high water level. It's said by 2050 the helm glacier will disappear. So, we have to start taking care of the environment to avoid melting glaciers.
BY: Iqbalpreet & Jaspreet