Calculating the prominence and isolation of every mountain in the world
| Autor: | Jonathan de Ferranti, Andrew Kirmse |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Geography
Planning and Development 0211 other engineering and technologies Entire globe 02 engineering and technology Topographic prominence Geography 0202 electrical engineering electronic engineering information engineering Earth and Planetary Sciences (miscellaneous) General Earth and Planetary Sciences 020201 artificial intelligence & image processing Isolation (database systems) Digital elevation model Cartography 021101 geological & geomatics engineering |
| Zdroj: | Progress in Physical Geography: Earth and Environment. 41:788-802 |
| ISSN: | 1477-0296 0309-1333 |
| DOI: | 10.1177/0309133317738163 |
| Popis: | A global-scale calculation identifies peaks in a digital elevation model (DEM) and computes their isolation and topographic prominence. A new DEM is presented that covers the entire globe at 90 meter resolution with no substantial voids or artifacts. All peaks with at least 1 kilometer of isolation are found, and the closest higher ground is identified. For prominence, all peaks with at least ∼30 meters are found, and the key saddle is identified. The prominence algorithm uses results from Morse–Smale topology to run in parallel on standard, freely available elevation data. Thirteen previously unknown “ultra-prominent” mountains with at least 1500 meters of prominence are listed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|