1 / 13

High Resolution DEM Creation for Majuro Airport

High Resolution DEM Creation for Majuro Airport. Elizabeth Lomani. MarTina Corporation. Airport Background. Majuro, Marshall Islands Elevation: 2 meters Max Runway: 2407 x 46 meters Accommodate 25 flights per week International flights Cargo flights Domestic flights

shiloh
Télécharger la présentation

High Resolution DEM Creation for Majuro Airport

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. High Resolution DEM Creation for Majuro Airport Elizabeth Lomani MarTina Corporation

  2. Airport Background • Majuro, Marshall Islands • Elevation: 2 meters • Max Runway: 2407 x 46 meters • Accommodate 25 flights per week • International flights • Cargo flights • Domestic flights • Important infrastructures • Airport • Water catchment for the island

  3. Important infrastructures Pipelines Reservoir Airport

  4. Steps to Creating the Airport DEM • Results from topographic survey • Convert DXF to GIS format • Digitised spot heights • Export to Access for data integrity checks • Export to Erdas • DTM creation in Erdas

  5. Convert DXF to GIS format • Too many files to go through. • Opening files proved to be tedious and time consuming

  6. Digitising spot heights • Contour lines without elevation values • Extracting elevation values from original file • More than one feature on one file 1 2 3

  7. Result of Digitising • 5 people digitised the spot heights • 14,000 points digitised • 10,00 points - useful

  8. Export to Access for data integrity checks • Null Values • Unrealistic heights • Conversion from feet to meters

  9. DTM Creation • Surface model was created • Holes in the middle of the airport • Negative values • Typos

  10. 2030 Sea level rise inundation model • 16cm sea level rise • Spatial Analysis • Area loss • 20% Infrastructure affected

  11. 2055 Sea level rise inundation model • 30cm sea level rise • Spatial Analysis • Area loss • 50% Infrastructures affected

  12. 2090 inundation model • 60cm sea level rise • Spatial Analysis • Area loss • More than 90% Infrastructures affected

  13. Thanks

More Related