Erosion by an Alpine glacier
| Autor: | Jean Philippe Avouac, Olivier Beyssac, Mattia Brughelli, Jiao Y. Y. Lin, Stuart N. Lane, Frédéric Herman, Simon C. Cox, Thierry Adatte, Sebastien Leprince |
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| Rok vydání: | 2015 |
| Předmět: |
geography
Multidisciplinary geography.geographical_feature_category 010504 meteorology & atmospheric sciences Bedrock Glacier 15. Life on land 010502 geochemistry & geophysics 01 natural sciences Erosion rate Abrasion (geology) Glacial period Erosion and tectonics Physical geography Geology 0105 earth and related environmental sciences |
| Zdroj: | Science (New York, N.Y.). 350(6257) |
| ISSN: | 1095-9203 |
| Popis: | The glacial way of wearing away The rate at which glaciers erode landscapes is an important but poorly constrained relationship. Herman et al. tackle this issue by considering the Franz Josef alpine glacier in New Zealand. The amount of sediment piling up at the edge of the glacier provided erosion rates, whereas remote sensing allowed for simultaneous tracking of glacial motion. The result was a nonlinear relationship, suggesting that fast glaciers are much more effective at gouging landscapes. This could explain the paradox of why long-term erosion rates are so much lower in polar regions with more permanent glaciers. Science , this issue p. 193 |
| Databáze: | OpenAIRE |
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