Tiêu đề Glacial Processes and Landforms.pdf ✅

What is a glacier? • A glacier is simply the existence of year-round ice on the landscape. • There are two broad types: continental and alpine. How do glaciers form? • Glaciers form whenever snowfall exceeds snowmelt year after year. The snow accumulates incrementally, pressure increases, and it is changed into névé and then ice by this pressure.
Maximum Extent of Pleistocene Glaciation - 1/3 of land surface Most recent glacial maximum peaked 18,000 years ago and is considered to have ended 10,000 B.P.
1. Glaciers are flowing streams of ice 2. Glaciers have a zone of accumulation where snowfall exceeds losses (ablation) 3. Accumulation can be due to high altitude (mountain glaciers) or cold climate (continental glaciers) 4. Glaciers have a zone of ablation where losses exceed snowfall 5. Glaciers are governed by a balance of snowfall, ice flow, and ablation 6. Glaciers retreat by melting back, not by retracting 7. Glaciers produce distinctive landforms and small scale features