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2021 | OriginalPaper | Chapter

Bathymetric Analyses of Submarine Landslides on the Jan Mayen Ridge, Norwegian–Greenland Sea

Authors : Kiichiro Kawamura, Jan Sverre Laberg

Published in: Understanding and Reducing Landslide Disaster Risk

Publisher: Springer International Publishing

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Abstract

This paper considers the formation of submarine landslides on the Jan Mayen Ridge. A large submarine landslide, about 50 km wide, 40 km long and 500 m deep, has developed into an amphitheatre-shaped depression with subsequent retrogressive sliding along bedding planes to form secondary and tertiary landslide scars. This retrogressive process proceeded via small slope failures that generated erosive, confined turbidity currents. Consequently, long channels developed downslope of the secondary and tertiary landslide scars. Other small landslides are located on the deep-sea terraces at the foot of the southeast ridge. Internal normal faults on the terrace have generated an irregular bathymetry with many superimposed landslides. These small landslides formed on areas of relatively steep seafloor and are triggered by normal faulting.

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Title: Bathymetric Analyses of Submarine Landslides on the Jan Mayen Ridge, Norwegian–Greenland Sea
Authors: Kiichiro Kawamura
Jan Sverre Laberg
Publisher: Springer International Publishing
Book: Understanding and Reducing Landslide Disaster Risk
Print ISBN: 978-3-030-60318-2

Electronic ISBN: 978-3-030-60319-9

Copyright Year: 2021
DOI: https://doi.org/10.1007/978-3-030-60319-9_20