– Definition of a Glacier:
– Persistent body of dense ice
– Moves under its weight
– Forms from snow accumulation exceeding ablation
– Develops crevasses and seracs
– Flows slowly over time
– Geographic Distribution:
– Pakistan has 7,253 glaciers
– Pakistan holds most glacial ice outside polar regions
– Baltoro Glacier in Pakistan is 62 km long
– Glacier in Greenland’s Geikie Plateau
– Taschachferner in Austria’s Ötztal Alps
– Glacier Characteristics:
– Vary in size and shape
– Can create icebergs in oceans
– Influence climate through albedo effect
– Serve as freshwater reservoirs
– Erode and shape landscapes
– Glacier Movement:
– Moves due to gravity and pressure
– Speed influenced by slope and mass
– Internal deformation causes flow
– Basal sliding aids movement
– Seasonal variations in speed
– Impact of Climate Change:
– Accelerated melting rates
– Alters sea levels and ecosystems
– Increases glacial lake outburst floods
– Threatens freshwater resources
– Indicators of global warming trends
