Preliminary landslide mapping in Greenland

Bulletin

Kristian Svennevig*1

RESEARCH ARTICLE | OPEN ACCESS

GEUS Bulletin Vol 43 | e2019430207 | Published online: 17 June 2019

https://doi.org/10.34194/GEUSB-201943-02-07

Download Article (PDF)


The landslide of 17 June 2017 in Karrat Fjord, central West Greenland, highlighted the need for a better understanding of landslides and landslide-generated tsunamis in Greenland and motivated a landslide screening project in 2018, led by the Geological Survey of Denmark and Greenland (GEUS; see also Svennevig et al. this volume). A central part of this project was to conduct a preliminary mapping of Quaternary and historical landslides in Greenland – the first effort of its kind. The main objective was to establish a landslide inventory database that can be used to identify areas prone to landslides and serve as a tool for gaining a better understanding of where, when and why catastrophic landslides take place in Greenland.

This paper describes the workflow used to produce the preliminary landslide inventory of Greenland and discusses some of the initial results. To date (June 2019), I have mapped 564 landslides with the vast majority situated in the Nuussuaq Basin between Sigguup Nunaa (Svartenhuk Halvø), and Qeqertarsuaq (Disko) in West Greenland (Fig. 1). The inventory mapping is mainly based on observations and analyses of remotely sensed imagery and pre-existing geological maps. The mapping coverage was not systematic for all of Greenland, but focused on postglacial, potentially tsunamigenic landslides in inhabited coastal regions, i.e. on relatively large landslides on coastal slopes, mainly in West Greenland and small areas of East Greenland. However, smaller and inland landslides were included when they were encountered. Similarly, the less inhabited parts of Greenland were provisionally screened, but call for more thorough, systematic mapping in the future.

AUTHOR INFORMATION

*Corresponding Author: Kristian Svennevig | Email: ksv@geus.dk

1 Geological Survey of Denmark and Greenland (GEUS), Øster Voldgade 10, DK-1350, Copenhagen K, Denmark

ABOUT THIS ARTICLE

This article is published in the Geological Survey of Denmark and Greenland Bulletin – an international, peer-reviewed and open access journal published by the Geological Survey of Denmark and Greenland (GEUS).

HOW TO CITE

Svennevig, K. 2019: Preliminary landslide mapping in Greenland. Geological Survey of Denmark and Greenland Bulletin 43, e2019430207. https://doi.org/10.34194/GEUSB-201943-02-07

SUPPLEMENTARY INFORMATION

None available.

COPYRIGHT AND PERMISSIONS

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. GEUS Bulletin is free to individuals and institutions in electronic form. Downloaded copies of this journal or articles in this journal may be distributed for non-commercial purposes without charge, provided that appropriate citation is given. The author(s) retain copyright over the article contents.

GEUS copyright clause: Any commercial use of the Bulletin or the articles contained herein is expressly prohibited without the written consent of the editor and author(s).

PUBLICATION HISTORY

Date received: 04/02/2019

Date accepted: 02/05/2019

First published online: 17/06/2019

KEYWORDS

Landslide . Greenland . Mapping . Historical records . GIS