Elevation - 42 of 41
Elevation FAQs - 41 Found
The 5-meter DEMs in Alaska contain ‘DTM’ in the file names. The term digital terrain model, or DTM, is often used as a synonym for a digital elevation model for these products and should not be confused with a triangulated irregular network which is a vector form of DTM. The USGS distributes Alaska elevation datasets that are labeled as DTM in the file names; however, these files are raster models with elevations at regularly spaced intervals. Therefore, the Alaska datasets labeled as DTMs are equivalent to USGS DEMs in format and surface representation.