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eISSN 2029-7092 online
eISBN 978-609-457-640-9
ISBN 978-609-457-690-4 CD
Technologies of Geodesy and Cadastre

Erkko Grunthal, Anti Gruno, Artu Ellmann

Monitoring of coastal processes by using airborne laser scanning data

Conference Information: 9th International Conference “Environmental Engineering”, 22–23 May 2014, Vilnius, LITHUANIA
Source: ICEE-2014 - International Conference on Environmental Engineering
Book Series: International Conference on Environmental Engineering (ICEE) Selected papers
ISSN: eISSN 2029-7092 online
ISBN: eISBN 978-609-457-640-9
ISBN: ISBN 978-609-457-690-4 CD
Year: 2014
Publisher: Vilnius Gediminas Technical University Press Technika

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The three Baltic States and other Baltic Sea countries (Denmark, Finland, Germany, Poland, Russia and Sweden) share over 8,000 km of shorelines. Estonia has a shoreline length of approximately 3800 km, due to many islands, bays, and peninsulas. Coast monitoring with traditional surveying methods would be time consuming and expensive. Remote sensing by means of airborne laser scanning (ALS) could be an alternative to traditional coastal surveying methods. Accordingly, the aim of the study is to determine whether ALS data can be used to quantify volume changes along shorelines.
The case study utilizes ALS data acquired by the Estonian Land Board in 2008–2011. The ALS flights are conducted in different altitudes (yielding a varying point density) and seasons (spring, summer). Study shows also that accuracy of readily available ALS data products may not be suited for the most demanding applications. Certain computational principles and methods need to be applied for remove systematical biases between different ALS campaigns. The methods and algorithms that where developed and tested during this study yield sub-decimetre accuracy for detecting contemporary coastal processes. Thus, ALS data can be used as an alternative to traditional coastal monitoring methods.

Keywords: airborne laser scanning; coastal processes; ALS data enhancements.

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