STS045-618-13
NASA Photo ID | STS045-618-13 |
Focal Length | 250mm |
Date taken | 1992.03.30 |
Time taken | 16:05:00 GMT |
Cloud masks available for this image:
Country or Geographic Name: | ANGOLA |
Features: | MOCAMEDES DES., COAST |
Features Found Using Machine Learning: | |
Cloud Cover Percentage: | 0 (no clouds present) |
Sun Elevation Angle: | 18° |
Sun Azimuth: | 278° |
Camera: | Rolleiflex |
Focal Length: | 250mm |
Camera Tilt: | Low Oblique |
Format: | 5017: Kodak, natural color positive, Ektachrome, X Professional, ASA 64, standard base |
Film Exposure: | Normal |
Additional Information | |
Width | Height | Annotated | Cropped | Purpose | Links |
---|---|---|---|---|---|
5700 pixels | 6000 pixels | No | No | Download Image | |
500 pixels | 526 pixels | No | No | Download Image | |
640 pixels | 480 pixels | No | No | Download Image |
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Image Caption:
STS045-618-013 and STS045-618-016: Namib Desert Dune Patterns
STS045-618-013: Namib Desert coastal dunes, southern Angola.
The trend of the dunes in the sand sea show a great clockwise
"wheelround." A similar pattern of dune trends occurs further
south in Namibia (STS045-618-016), south of the Cunene River (the
border between Namibia and Angola). Friction caused when south-
erly winds blow off the ocean over relatively rougher landsur-
faces are deflected rightwards in the southern hemisphere. De-
flection of winds up major river valleys may also help explain
this striking pattern.
STS045-618-013 and STS045-618-016: Namib Desert Dune Patterns
STS045-618-013: Namib Desert coastal dunes, southern Angola.
The trend of the dunes in the sand sea show a great clockwise
"wheelround." A similar pattern of dune trends occurs further
south in Namibia (STS045-618-016), south of the Cunene River (the
border between Namibia and Angola). Friction caused when south-
erly winds blow off the ocean over relatively rougher landsur-
faces are deflected rightwards in the southern hemisphere. De-
flection of winds up major river valleys may also help explain
this striking pattern.