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Where land meets sea: towards a complete coverage for terrain analysis of coastal environments


Lecours, V and Lucieer, V and Micallef, A and Dolan, M and Brown, C and Edinger, E and Devillers, R, Where land meets sea: towards a complete coverage for terrain analysis of coastal environments, 36th Canadian Symposium on Remote Sensing Abstracts, 08-11 June, St. John's, Newfoundland and Labrador, Canada, pp. 60. (2015) [Conference Extract]

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Developments in remote sensing techniques to produce digital terrain models (DTM) have provided new methods for studying terrestrial environments, thereby improving scientific understanding of ecological and geomorphological processes. Geomorphometry, or terrain analysis, uses DTMs to quantify physical characteristics of the land (e.g., slope or rugosity) that are used for different applications such as habitat mapping. The use of multibeam echosounder systems (MBES) to measure seafloor relief has changed the way we study and understand marine environments; techniques from geomorphometry are now commonly applied to these underwater DTMs for the investigation of marine habitats and geomorphology.

Due to the inability of satellite remote sensing to collect data in deep waters and the limitations of MBES data collection in shallower waters, there is often a gap in terrain data where land meets sea. A seamless analysis of terrestrial and marine environments requires the combination of terrestrial DTMs, bathymetric data from MBES, and bathymetric LiDAR to fill this gap. The challenges encountered with merging datasets from different sources, such as data uncertainty or spatial resolution, makes such an approach still nascent in the literature.

Using data from coastal Newfoundland and Labrador, this contribution reviews the potential uses of continuous terrestrial/marine terrain models, especially for the field of geomorphometry and its application in coastal environments. We argue that such DTMs can become essential to applications like coastal habitat mapping, identification of hazards for navigation in shallow waters, or studying landforms that overlap between environments. We also discuss how some techniques traditionally used in terrestrial studies, such as Geographic object-based image analysis (Geobia), can be applied in marine studies.

Item Details

Item Type:Conference Extract
Keywords:multibeam, shallow water
Research Division:Engineering
Research Group:Geomatic engineering
Research Field:Geospatial information systems and geospatial data modelling
Objective Division:Environmental Management
Objective Group:Coastal and estuarine systems and management
Objective Field:Assessment and management of coastal and estuarine ecosystems
UTAS Author:Lucieer, V (Dr Vanessa Lucieer)
ID Code:105063
Year Published:2015
Deposited By:IMAS Research and Education Centre
Deposited On:2015-12-04
Last Modified:2015-12-04

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