Although the details
of the valleys and the ranges of the work of glacial actions, weathering and
erosion, the formation as whole are primarily the result of recent up –lift. The
interaction of these processes result in highly unstable and dynamic landscape,
where earthquakes and landslides are frequent.
MOUNTAINS:
The Northern Areas has many of
the highest peaks, with five over 8000m, 25 over 7,500m, almost 100 over 7,000m and numerous
over 6000m. In K2 (8611m), Pakistan can boast a mountain second only to the
Everest in height, whilst Nanga Parbat(8126m) the killer mountain surely be acknowledged
as the largest solid lumps of rock of anywhere on the earth.
GLACIERS: The Karakorum, range contains some of the
largest glaciers outside of the polar regions including SiachHin (72km),
Biafo(62km), Hispar(61km), Batura(58km), Baltoro(58km) Gashbrum and Chgo Lungma both are 38km and Chiantir glacier in Hindu Khush is 35km is still not known. Ice covered in the Karakorum
is estimated 23-25% as opposed to 8-10% in the Himalaya and 2.2% in the Alps. The
region’s glaciers provide both a creative and destructive force being
responsible for loss of agricultural land and damage to road networks through
encroachment, but also providing the source for irrigation in a region where
rain-fed agricultural is not possible.
RIVERS:
The dominant river system in the region is Indus, which cuts a deep gorge trending firs E-W the N-S. With rare exceptions, such as Chilas and Skardu, habitation along the Indus river bank has not been possible, with population tending to stick with minor tributary valleys and mountain slopes where river and glacial water is more manageable.
Numerous other rivers drain the region forming part of the Upper Indus basin, including the Shyoke, Shigar, Astoreru, Gilgit, Hunza, Ghizar, kurumbar, Shimshal and khunjerab.
Other geographical Features:
There are numerous geographical features in
the Northern Areas including numerous passes between valleys, some of which are
easily crossed and other which have fearsome reflections and are closed for
most of the year such as Karakorum pass.
The enormous plateau known as the Deosia plain lying W and North West of Skardu, is a spectacular illustration of the effects of glacial actions and environmental change on the landscape.
Climate of North Pakistan:
Climatically the northern area is the region of extremes. The Temperature fluctuate between the mid to late 40 C in the furnace of the gorge around Chilas down 30 C at the higher altitude. The main valleys such as Gilgit, Hunza and Skembardu generally have annual temperature ranges between 0 C and 30 C. Many parts of the
Northern Areas are snow-bound between November and April.
The Northern
Areas are largely outside the monsoon belt and receives only minimal rainfall
of about 100mm annually, most of which occurs at high altitude feeding
snow-fields and glaciers. The lower sections of the Kaghan valley and Hazara
lie on the edge of the SW monsoon and receive upwards of 800mm of rain fall
annually. In August the main trekking season rivers are swollen with summer
snow-melt and difficult to cross. Spring (April-May) and Autumn(September-October)
are particularly beautiful seasons although cold at night.
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