Correction of elevation offsets in multiple co-located lidar datasets
Introduction
Topographic elevation data collected with airborne light detection and ranging (lidar) can be used to analyze short- and long-term changes to beach and dune systems. Analysis of multiple lidar datasets at Dauphin Island, Alabama, revealed systematic, island-wide elevation differences on the order of 10s of centimeters (cm) that were not attributable to real-world change and, therefore, were likely to represent systematic sampling offsets. These offsets vary between the datasets, but appear spatially consistent within a given survey. This report describes a method that was developed to identify and correct offsets between lidar datasets collected over the same site at different times so that true elevation changes over time, associated with sediment accumulation or erosion, can be analyzed.
Citation Information
Publication Year | 2017 |
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Title | Correction of elevation offsets in multiple co-located lidar datasets |
DOI | 10.3133/ofr20171031 |
Authors | David M. Thompson, P. Soupy Dalyander, Joseph W. Long, Nathaniel G. Plant |
Publication Type | Report |
Publication Subtype | USGS Numbered Series |
Series Title | Open-File Report |
Series Number | 2017-1031 |
Index ID | ofr20171031 |
Record Source | USGS Publications Warehouse |
USGS Organization | St. Petersburg Coastal and Marine Science Center |