Glacier Variations and Climatic Fluctuations

Glacier Variations and Climatic Fluctuations

Glacier Variations and Climatic Fluctuations

Glacier Variations and Climatic Fluctuations

Excerpt

The third in the series of the Isaiah Bowman Memorial Fund lectures was delivered by His Excellency Hans W:son Ahlmann on August 13, 1952, as the principal address at the meeting of the Seventeenth International Geographical Congress in Washington, D. C. The original text of "Glacier Variations and Climatic Fluctuations" has been augmented for publication by additional data and references to serve as a summary of the author's latest thinking on the subject. It brings together the findings of the human and physical geographer, the geomorphologist, the climatologist and even the historian. Dr. Ahlmann has been Professor of Geography at the University of Stockholm, and from 1948 to 1951 served as President of the Commission on Snow and Ice of the International Association of Hydrology (I. U. G. G.).

Dr. Ahlmann, now serving his country as Sweden's Ambassador to Norway, has for two decades been the leader in the work of relating changes in glaciers to climatic fluctuations. His concept of the need for collaboration between sciences--the team approach--and the necessity for initiating detailed observations to achieve a better understanding of glacier regimen has changed the whole scope of glaciology. He has pioneered in developing methods for making precise measurements of accumulation and wastage from which to determine a glacier's economy or hydrologic balance. These techniques not only provide means of learning more about glaciers themselves . . .

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