Lidar and digital aerial photography in the seal level rise impact determination in “LaBoquilla” sector, Cartagena de Indias; Colombian Caribbean
DOI:
https://doi.org/10.26640/22159045.152Keywords:
LIDAR, Digital aerial photography, La Boquilla, Inundation, Sea level riseAbstract
Due to the risk in that the in habitants of the Colombian coastal areas can be by an event of sea level rise, and on the other hand, the absence of Digital Terrain Models (DTM's) with horizontal and vertical accuracy of centimeters, it was stablished the Colombian Caribbean littoral areas that will be flooded in the Boquilla sector, as well as the effects of this flood on the population and their housings, through the use of the technologies of LIDAR (Light Detection and Ranging) sensor, digital metric camera and the ArcGis 9.0. In reach terms and relevance, the results of the research provides technical support elements for the taking of decisions related with the control and administration of coasts by National Maritime Authority (DIMAR) and their Captaincies of Port.
The development of the research included the simultaneously taking of digital aerial photographs with the operation of LIDAR sensor, the later digital orthorectificación of the photographs and the filtrate of the three dimensional information obtained with the LIDAR sensor during its operation in December 2005; as well as the adoption of flood scenarios, the use of the functions of the ArcGis 9.0 for the generation of the DTM's; the compile of information about the quantity of population and its housings; the determination of the risk and finally, the evaluation of the quantity of affected population. The results of the investigation in adition, of the utility for the National Maritime Authority, they provide useful information for the knowledge, analysis and administration of the risk due sea level rise in the Colombian Caribbean coasts to national, regional and local authorities, responsaibles of to formulate and to start up social and economic policies.
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