Avalanches
What are avalanches ?
Avalanches are a mass of snow
,
ice and rocks as well as other materials which
, ,
down with it.
swiftly slides down a mountainside and takes more material
Types of avalanches :
Loose snow avalanche : this kind of avalanche is usually on steep slopes with fresh
snow and because the fresh isn't settled and therefore not solid which makes it
very easy to slide down the hill . This avalanche has a
single point of origin and
then spreads over the whole hillside.
Slab avalanche :
This is the most
occuring type of avalanche and therefore caused
the to
most damage this day. This avalanche is a
large block of ice ,
which slides
the the earth /ice it
suddenly ,
looses
grip on beneath and slides down. The ones
where the block especially thick the
is are most dangerous .
Powder snow avalanche :
This avalanche is a mixture of the ones above. The bottom half of the avalanche is
a slab avalanche and the upper half is more like the powder snow avalanche .
Wet snow avalanche :
This type isn't quite as fast as the others due to friction. It starts with water
and down the and then picks
snow
rolling mountain up speed.
What causes an avalanche ?
Avalanches occur
,
when the four big factors fit :
it needs a
steep slope ,
snow
,
a weak layer in the snow and a
trigger
Examples for triggers :
earthquakes ,
a snow storm
,
an overload of snow
What are avalanches ?
Avalanches are a mass of snow
,
ice and rocks as well as other materials which
, ,
down with it.
swiftly slides down a mountainside and takes more material
Types of avalanches :
Loose snow avalanche : this kind of avalanche is usually on steep slopes with fresh
snow and because the fresh isn't settled and therefore not solid which makes it
very easy to slide down the hill . This avalanche has a
single point of origin and
then spreads over the whole hillside.
Slab avalanche :
This is the most
occuring type of avalanche and therefore caused
the to
most damage this day. This avalanche is a
large block of ice ,
which slides
the the earth /ice it
suddenly ,
looses
grip on beneath and slides down. The ones
where the block especially thick the
is are most dangerous .
Powder snow avalanche :
This avalanche is a mixture of the ones above. The bottom half of the avalanche is
a slab avalanche and the upper half is more like the powder snow avalanche .
Wet snow avalanche :
This type isn't quite as fast as the others due to friction. It starts with water
and down the and then picks
snow
rolling mountain up speed.
What causes an avalanche ?
Avalanches occur
,
when the four big factors fit :
it needs a
steep slope ,
snow
,
a weak layer in the snow and a
trigger
Examples for triggers :
earthquakes ,
a snow storm
,
an overload of snow
