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Analysis of the submarine slopes activity in Central Patagonian fjords - Chile

Authors

  • Rosemary Vieira Núcleo de Pesquisas Antárticas e Climáticas Universidade Federal do Rio Grande do Sul
No. 41 (2009)
https://doi.org/10.5354/0719-5370.2009.21885

Abstract

Submarine slope in fjords and channels of Central Patagonia are studied using subbottom profiler 3.5 kHz data. Some areas of fjords Eyre, Falcon, Europa and Peel, Icy channel, and the convergence zone of Calvo and Amalia fjords are selected to analysis. Slope maps and longitudinal profiles are elaborated to represent the submarine topography. The sedimentary body mobilized by some mass removing processes has generated forms close to the slope base, involucrate no cohesion material, possibly associated to debris flow. Plunge pools are also observed close to the slope base. As occunkg in Northem Patagonia fjord coast and in other fjord coast around the world, the most of slope activities is found at slopes until )O0, and slides are also comrnon at slopes lower than 1°. Slope activities in this part of the fjord Chilean coast are possibly related rather to the behavior of the glacier frontal zones (advance 1 retreat) than fluvial and marine activities, which predominate at the present time on submarine slopes in fjord coast of North Patagonia.    

Keywords:

Fjords, submarine slopes, mass movements, genetic processes

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How to Cite
Vieira, R. (2009). Analysis of the submarine slopes activity in Central Patagonian fjords - Chile. Investigaciones Geográficas, (41), Pág. 3–24. https://doi.org/10.5354/0719-5370.2009.21885
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Investigaciones Geográficas
Facultad de Arquitectura y Urbanismo
Universidad de Chile
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