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It's great to get higher resolution terrain. But, that just makes the mis-alignment with the imagery more apparent. Look at Half Dome in Yosemite to see how sad that magnificent rock looks when you tilt the view.
I just love these improvements in both imagery and terrain. Now I'd like to see some method for matching the two so that a river, for example, is at the bottom of a canyon instead of on the side wall. I'd like to see some way that the user community could get involved in this effort.
Posted by: Ernie at June 6, 2007 11:05 AM
Originally posted by starwarp2000
reply to post by Phage
In order to incorporate your DEM terrain data with the imagery and vector data displayed in Google Earth you'll need to have the Enterprise version. To learn more check out:
Google Earth Enterprise Version
So Google Earth only uses Imagery and vector data
The primary source of imagery has a resolution of 15 meters and is from NASA's global Landsat program. For some areas, including most of the USA, many cities, and mountains including Mount Everest and most other Nepalese mountains over 8000m, there are higher resolution images.
Google Earth images can be tilted to give realistic three dimensional views. But these views require DEM data. Prior to 23 November 2006, the only sources of DEM data that they were using were USGS, GTOPO30 and SRTM. The USGS source is good but only covers US territory. The quality of GTOPO30 is variable and its resolution of 30 arc seconds is not adequate. The quality of SRTM is almost uniformly good and its 3 arc second resolution is adequate, but it mapped nothing north of 60°N or south of 56°S, and missed many areas of very high relief. This spoiled the 3D images of thousands of mountains, including Matterhorn and Everest. However, GE have now incorporated DEM data from alternative sources, and the majority of mountains are now much better.
So, back on the subject, there is no possible way that any features, when tilted in Google Earth, in Antarctica, can show 'height' information.
Originally posted by Phage
Google Earth does incorporate DEM (digital elevation model) data in it's "terrain" mode. But the resolution of the model does vary according to the available data. The data for this area shows only a steady slope upward the east, indicating that the data may not be very high resolution. In a way, my point in showing the "tilted" view was to demonstrate exactly what you are saying. (I misunderstood when you said I applied perspective). From an overhead image it is impossible to judge elevation without additional data. The dark area could be a hole or it could be a flat surface.
Originally posted by tauristercus
66 45' 2.73"S
89 24' 25.60"E
Here's a close up view of the main complex compreised of 5 main sections.
Look just north of it and take a look at this very unusual structure.
One can assume that based on it's shape, the obvious straight lines and right angles, that in all likelyhood it most likely is an artificial construct of unknown purpose.
This image shows (on the right), another large structure.
I'm unsure if the other structure (on the left) is artificial or natural in nature but there's definitely an unusually coloured (compared to the surrounding rocks) artifact to the left of the structure / opening.
Now take a GOOD look at the upper structure ... bear in mind that this is just MY interpretation alone ... but doesn't that look disturbingly JUST LIKE a cannon turret ?
Originally posted by tauristercus
But if you CAN identify this station, please do so !
These are oil tanks of field base Gora Vechernyaya about 12km SSE of Molodezhnaya station.