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You are here: Home » Past Issues » Volume 12, 2017 - Number 1 » CLIMATE CHANGE IMPACT ON GLACIERS RETREAT IN PASSAGE CANAL FJORD, ALASKA


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Mărgărit-Mircea NISTOR
University of Modena and Reggio Emilia - Department of Chemical and Geological Sciences, Campi Street, No. 103, 41125, Modena, Italy, email: renddel@yahoo.com

CLIMATE CHANGE IMPACT ON GLACIERS RETREAT IN PASSAGE CANAL FJORD, ALASKA

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Abstract:

The recent climate changes of the Globe and continuous warming of the Artic regions conduct at melting of larges areas covered by ice. The rise in sea water level risk connected to disturbances of enormous biogenesis and ecosystems has come to signal the effects of ice melting and glaciers retreat. Here we present a method to assess the climate change impact on glaciers from Passage Canal Fjord. Climate data, satellite images, and the thickness of three glaciers represent the main data used into climate change impact analysis. The mean temperature data and the melting volume values of Billings, Learnard, and Whittier Glaciers from 1972-2014 were introduced into an artificial algorithm based on a matrix method to assess the climate change impact on these glaciers. The main results indicate that glaciers retreat represents about 30.05% of the entire ice cover areas of the Passage Canal. An absolute melting volume value of 0.44 km3 from 1972 to 2014 was calculated for the study area which corresponds to 2.95x10-5 mm in sea level rise. Based on the matrix method the medium impact of climate change was found for the Billings and Learnard Glaciers and the high impact was found for the Whittier Glacier.


Keyword: climate change, glacier melting, satellite images, Passage Canal, sea level rise.


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