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Abbravation: Quaternary Research

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Cambridge University Press

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10.1007/bf01359671

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1096-0287

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Mass Balance and Sliding Velocity of the Puget Lob

Authors: Derek B Booth
Publish Date: 1986/05
Volume: 25, Issue: 3, Pages: 269-280
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Abstract

An estimate of the sliding velocity and basal meltwater discharge of the Puget lobe of the Cordilleran ice sheet can be calculated from its reconstructed extent altitude and mass balance Lobe dimensions and surface altitudes are inferred from ice limits and flowdirection indicators Net annual mass balance and total ablation are calculated from relations empirically derived from modern maritime glaciers An equilibriumline altitude between 1200 and 1250 m is calculated for the maximum glacial advance ca 15000 yr BP during the Vashon Stade of the Fraser Glaciation This estimate is in accord with geologic data and is insensitive to plausible variability in the parameters used in the reconstruction Resultant sliding velocities are as much as 650 m/a at the equilibrium line decreasing both up and downglacier Such velocities for an ice sheet of this size are consistent with nonsurging behavior Average meltwater discharge increases monotonically downglacier to 3000 m3/sec at the terminus and is of a comparable magnitude to ice discharge over much of the glaciers ablation area Paleoclimatic inferences derived from this reconstruction are consistent with previous independently derived studies of late Pleistocene temperature and precipitation in the Pacific Northwest

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References

citation title=Erosive processes which are likely to accentuate or reduce the bottom relief of valley glaciers citation author=Rothlisberger H citation publication date=1968 citation journal title=International Association of Scientific Hydrologists citation volume=79 citation firstpage=87 citation lastpage=97

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Other Papers In This Journal:
  1. Ice-Sheet Glaciation of the Puget Lowland, Washington, during the Vashon Stade (Late Pleistocene) 1
  2. The Timing of Late Pleistocene Mammalian Extinctions in North America
  3. An Altitudinal Cline in Tropical African Grass Floras and Its Paleoecological Significance
  4. Glaciations of the West Coast Range, Tasmania
  5. Tephrochronology of Late Wisconsin Deglaciation and Holocene Glacier Fluctuations Near Glacier Peak, North Cascade Range, Washington
  6. Determining the Exposure Age of a Karst Landscape
  7. Stable Isotope Stratigraphy of a Late Last Interglacial Speleothem from Rana, Northern Norway
  8. Holocene Paleoenvironmental Change in the Kenyan Central Rift as Indicated by Micromammals from Enkapune Ya Muto Rockshelter
  9. Paleoecological Studies at Lake Patzcuaro on the West-Central Mexican Plateau and at Chalco in the Basin of Mexico 1
  10. Some Effects of Partial Recrystallisation on 14 C dating Late Pleistocene Corals and Molluscs
  11. Some Effects of Partial Recrystallisation on 14 C dating Late Pleistocene Corals and Molluscs
  12. Climate Variation and the Rise and Fall of an Andean Civilization
  13. Saharan Dust Transport and High-Latitude Glacial Climatic Variability: The Alboran Sea Record
  14. Pedogenic Gradients for Iron and Aluminum Accumulation and Phosphorus Depletion in Arctic and Alpine Soils as a Function of Time and Climate
  15. Glacial-Marine Sedimentation and Quaternary Glacial History of Marguerite Bay, Antarctic Peninsula
  16. QUA volume 31 issue 1 Cover and Front matter
  17. Paleoclimatic Significance of the Stable Isotopic Composition and Petrology of a Late Pleistocene Stalagmite from Botswana
  18. Tephrochronology of the Western Gulf of Mexico for the Last 185,000 Years
  19. Is There Evidence for Solar Forcing of Climate in the GISP2 Oxygen Isotope Record?
  20. Plio-Pleistocene Marine-Continental Correlation using Habitat Indicators from Olduvai Gorge, Tanzania
  21. Late Weichselian Marine 14 C Reservoir Ages at the Western Coast of Norway
  22. Late-Glacial and Early Holocene Environmental and Climatic Change at Lake Tambichozero, Southeastern Russian Karelia
  23. The Late Wisconsinan Savanna Terrace in Tributaries to the Upper Mississippi River
  24. The Late Wisconsinan Savanna Terrace in Tributaries to the Upper Mississippi River
  25. Optical Dating of Holocene Dune Sands in the Ferris Dune Field, Wyoming
  26. Fire and Vegetation History from the Coastal Rain Forest of the Western Oregon Coast Range
  27. Alluvial Pollen on the North China Plain
  28. Vegetation, Climate, and Sea Level in the Past 55,000 Years, Hanjiang Delta, Southeastern China
  29. Aspartic Acid Racemization in Late Wisconsin Lake Ontario Sediments
  30. The Classic Marine Isotope Substage 5e
  31. Mire Development and Environmental Change, Barrington Tops, New South Wales, Australia
  32. Significance of Two New Pleistocene Plant Records from Western Europe
  33. Lake Tapps Tephra: An Early Pleistocene Stratigraphic Marker in the Puget Lowland, Washington
  34. Modern and Holocene Pollen Assemblages from Some Small Arctic Lakes on Somerset Island, NWT, Canada
  35. Toward the Definition of Criteria for the Recognition of Artificial Bone Alterations 1
  36. Late Weichselian and Holocene Relative Sea-level History of Bröggerhalvöya, Spitsbergen
  37. A Comparison of Radiolarian and Foraminiferal Paleoecology in the Southern Indian Ocean: New Evidence for the Interhemispheric Timing of Climatic Change
  38. Late Wisconsin Ice-Surface Profile Calculated from Esker Paths and Types, Katahdin Esker System, Maine
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