PDF-Geography GE2011: Glacial and Periglacial Processes

Periglacial Processes and Landforms Recommended reading Murray T 2005 Permafrost and periglaciation In Holden J ed Physical Geography and the Environment Pearson Harlow 46887 Strahler. Instructions Terms and definitions are shown out of order on page 2, and in order on page s 3 and 4. Classroom activities can include:  Students can match terms with the correct definitions Geomorphology. Periglacial Geomorphology. Periglacial. : literally means “around glacial” - term introduced in 1909 to describe landforms and processes around glaciated areas.. Periglacial environments. Glacial Erosion. As glaciers travel over land, glacial ice can erode the underlying bedrock.. This erosion can happen by:. Plucking. A. brasion. Plucking. This occurs when melt water at the base of the glacier freezes in cracks and fractures the underlying bedrock.. Lateral moraine. Braided streams. Medial moraine. Periglaciation - Zones Peripheral to Glaciers. Photo 2:. = Ice wedges polygons. + thermokarst lakes. Photo 3:. Collapsed Pingo – closed system. Photo 4:. 3. /. HO. x. ) Abundances. Glacial-Interglacial. Rapid Climate Change. Glacial.  .  . Model-based hypothesis: During large climate transitions, variability in the O. 3. /. HO. x. ratio is determined by . Perspectives on health geography. Why Geography and Health?. As . Dr. Trevor . Dummer. . (2008) stated: . Geography and . health are intrinsically linked. Where we are born, live, study and work directly influences our health experiences: the air we breathe, the food we eat, the viruses we are exposed to and the health services we can access. The social, built and natural environments affect our health and well-being in ways that are directly relevant to health policy. Spatial location (the geographic context of places and the connectedness between places) plays a major role in shaping environmental risks as well as many other health effects. Perspectives on health geography. Why Geography and Health?. As . Dr. Trevor . Dummer. . (2008) stated: . Geography and . health are intrinsically linked. Where we are born, live, study and work directly influences our health experiences: the air we breathe, the food we eat, the viruses we are exposed to and the health services we can access. The social, built and natural environments affect our health and well-being in ways that are directly relevant to health policy. Spatial location (the geographic context of places and the connectedness between places) plays a major role in shaping environmental risks as well as many other health effects. Darin Erickson. Aaron Gaither. Project Goals. Time lapse imagery showing glacial transformation. Area change . Retreat distance. Link glacial retreat with increasing temperatures. Correlate temperature with glacial retreat. Unit 5: Gradational Processes. Ms. . Thind. Glaciers. 10% of land is covered with glacial ice.. Store 75% of the world’s freshwater. . If all land ice melted, sea level would rise approx. 70m . Glaciers: importance?. Preview. African Geography. - . Africa is a large continent surrounded by oceans and seas. It is divided in two by the Sahara Desert. Sub-Saharan Africa is the region south of the Sahara Desert.. Farming, Herding, and Trade. B. Landforms : an accumulation of till deposited by direct glacial action. Ground moraines are relatively level to gently rolling and are formed by the deposition of accumulated material beneath the . post-glacial conditions in South-eastern . Latvi. a. . Daugavpils . University. Department of Environmental Science and Chemistry. Juris SOMS. . e-pasts: . juris.soms@du.lv. Zane . Once . glacial ice exceeds a thickness of about 150 feet, the weight of the overlying ice causes . the . base of . the glacier . to become plastic and flow like a very viscous liquid. While the bottom ice responds as a plastic solid, the surface ice is very brittle. However, from the surface down to the top of the plastic portion of the glacier, the ice experiences a decrease in . GEO101. Spring 2023. Contents. Growth of glaciers in the Cenozoic Era. Glacial cycles. The astronomical theory for glacial cycles. Cenozoic Glaciers. Cenozoic era started cooling 50 million years ago..