Monitoring and change detection of wadden sea areas using lidar data

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dc.identifier.uri http://dx.doi.org/10.15488/981
dc.identifier.uri http://www.repo.uni-hannover.de/handle/123456789/1005
dc.contributor.author Schmidt, Alena
dc.contributor.author Sörgel, Uwe
dc.date.accessioned 2016-12-22T10:06:50Z
dc.date.available 2016-12-22T10:06:50Z
dc.date.issued 2013
dc.identifier.citation Schmidt, A.; Soergel, U.: Monitoring and change detection of wadden sea areas using lidar data. In: International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives 40 (2013), Nr. 7W2, S. 219-224. DOI: https://doi.org/10.5194/isprsarchives-XL-7-W2-219-2013
dc.description.abstract In coastal areas morphological changes of various kinds are caused by tidal flows, storms, climate change, and human activities. For these reasons a recurrent monitoring becomes necessary in order to detect undesired changes at early stages enabling rapid countermeasures to mitigate or minimize potential harm or hazard. The morphology of the terrain can be represented by highly precise digital terrain models (DTM). Airborne lidar (light detection and ranging) has become a standard method for DTM generation in coastal zones like Wadden Sea areas. In comparison to echo sounding systems, lidar is feasible for data acquisition of large areas. However, only the eulittoral zone can be covered by standard laser because the near-infrared laser pulses are not able to penetrate water which remains, for example, in some tidal channels even during low tide. In the framework of a German research project, we analyse the spatial and temporal variability of Wadden Sea areas in the North Sea. For a systematic monitoring and the detection of morphological changes we compare terrain models of two different epochs in order to determine height differences which can be caused by natural influences or human activities. We focus especially on the analysis of morphological changes near to tidal channels. In order to detect changes we compare the location of edges derived from each DTM based on the gray values' gradients. Our results for a test site in the German Wadden Sea show height differences up to 1 m due to the shifting of tidal channels and relocations of the channels up to 55 m within a period of two years. eng
dc.language.iso eng
dc.publisher Hannover : International Society for Photogrammetry and Remote Sensing
dc.relation.ispartof ISPRS Conference on Serving Society with Geoinformatics, ISPRS-SSG 2013, 11-17 November 2013
dc.relation.ispartofseries International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives 40 (2013)
dc.rights CC BY 3.0 Unported
dc.rights.uri https://creativecommons.org/licenses/by/3.0/
dc.subject Change detection eng
dc.subject Coast eng
dc.subject Lidar eng
dc.subject Monitoring eng
dc.subject Climate change eng
dc.subject Coastal zones eng
dc.subject Data acquisition eng
dc.subject Infrared devices eng
dc.subject Infrared lasers eng
dc.subject Landforms eng
dc.subject Morphology eng
dc.subject Signal detection eng
dc.subject Airborne LiDAR eng
dc.subject Digital terrain model eng
dc.subject Human activities eng
dc.subject Morphological changes eng
dc.subject Near-infrared lasers eng
dc.subject Potential harm eng
dc.subject Spatial and temporal variability eng
dc.subject Optical radar eng
dc.subject.ddc 000 | Informatik, Informationswissenschaft, allgemeine Werke ger
dc.subject.ddc 550 | Geowissenschaften ger
dc.title Monitoring and change detection of wadden sea areas using lidar data
dc.type article
dc.type conferenceObject
dc.type Text
dc.relation.issn 16821750
dc.relation.doi https://doi.org/10.5194/isprsarchives-XL-7-W2-219-2013
dc.bibliographicCitation.issue 7W2
dc.bibliographicCitation.volume 40
dc.bibliographicCitation.firstPage 219
dc.bibliographicCitation.lastPage 224
dc.description.version publishedVersion
tib.accessRights frei zug�nglich


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