Chapter 17 Glacial and Periglacial Processes and Landforms

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Presentation transcript:

Chapter 17 Glacial and Periglacial Processes and Landforms Geosystems 6e An Introduction to Physical Geography Robert W. Christopherson Charles E. Thomsen

Glacial and Periglacial Processes and Landforms Rivers of Ice   Glacial Processes   Glacial Landforms   Periglacial Landscapes   The Pleistocene Ice Age Epoch   Deciphering Past Climates: Paleoclimatology   Arctic and Antarctic Regions

Rivers of Ice   Alpine Glaciers   Continental Glacier  

Rivers of Ice Figure 17.1

Vatnajökull Ice Cap Figure 17.5

Patagonian Ice Field Figure 17.5

Greenland’s East Coast Figure 17.6

Glacial Processes Formation of Glacial Ice Glacial Mass Balance Glacial Movement  

Retreating Alpine Glacier Figure 17.7

Mass Balance Figure 17.7

South Cascade Glacier Net Mass Balance Figure NR 17.1.1

Glacial Movement and Crevasses Figure 17.8

Crevasses Figure 17.8

Crevasses Figure 17.8

Glacial Polish Figure 17.9

Glacial Landforms Erosional Landforms Created by Alpine Glaciation Depositional Landforms Created by Alpine Glaciation   Erosional and Depositional Landforms Created by Continental Glaciation  

Alpine Glacial Landscape Figure 17.10

Postglacial Landscape Figure 17.10

Alpine Erosional Features Figure 17.11

Norwegian Fjord Figure 17.12

Alpine Depositional Features Figure 17.13

Continental Glacier Depositional Features Figure 17.15

Drumlin Swarm Figure 17.17

Roche Moutonnée Figure 17.16

Periglacial Landscapes Geography of Permafrost   Ground Ice and Frozen Ground Phenomena   Humans and Periglacial Landscapes  

Permafrost Distribution Figure 17.18

Periglacial Environments Figure 17.19

Ice Wedge Figure 17.20

Pingo Figure 17.21

Patterned Ground Figure 17.22

Gelifluction Lobes Figure 17.23

Permafrost Melting Figure 17.24

The Pleistocene Ice Age Epoch Changes in the Landscape   Lowered Sea Levels and Temperatures   Paleolakes  

Permafrost Structures Figure 17.25

Temperature Record of the Past 2 Million Years Figure 17.26

Pleistocene Glaciation Figure 17.27

Pleistocene Glaciation 18,000 years ago 9500 years ago Figure 17.27

Evolution of the Great Lakes Figure 17.28

Paleolakes Sevier Dry Lake Figure 17.29

Deciphering Past Climates: Paleoclimatology Medieval Warm Period and Little Ice Age   Mechanisms of Climate Fluctuation  

Greenland Ice Core Record Figure 17.30

Astronomical Factors Figure 17.31

Vostok Ice Core Record Present level at 480 ppm (2004) Figure 17.32

Greenland and Dome C Ice Cores Figure FS 17.1.1 Figure FS 17.1.3

Arctic and Antarctic Regions Figure 17.34

Meltponds in Greenland Figure NR 17.3.1

Meltponds in Greenland Figure NR 17.3.2

Pine Island Glacier Figure 17.34

Ward Hunt Ice Shelf Breakup Figure HLC 17.1.1

Geosystems 6e An Introduction to Physical Geography End of Chapter 17 Geosystems 6e An Introduction to Physical Geography Robert W. Christopherson Charles E. Thomsen