Niau Atoll FP (Repost)
Niau Atoll - Landsat Image S-06-15_2000
Niau Atoll - ESA Image 2006 Oct 9
Niau Atoll - Marplot Map
Niau (16˚09'S., 146˚22'W.) lies 17 miles SW of Toau. This circular island, 5 miles in diameter and 8m high, is covered with forest, and visible from a distance of 12 miles.
The population was 160 in 1996. The town of Tupani, to the NE of the island, is well visible from sea and has an open basin where craft can approach even in moderate wind from the E. Another landing point is located to the NW of the island, on a sandy beach in front of the abandoned town of Ofare.
Vessels can anchor, in E winds, in 25m, in front of the village, and 100m from the reef. There is a radio station at the town of Tupana. The current in the vicinity of Niau is strong, sometimes setting W and E. (SD Pub-126)
Finally, I am back in the Tuamotus. Niau Atoll was relatively easy to digitize. I was able to determine the reef by using the "Color Dodge" effect in Global Mapper on the image. I also determined the two large wetlands using that effect. The balance of the work was done using a typical Landsat ETM+ 2000 image and a "No Blend" effect. The project took about 3-hours to complete, map and post. It was fun to work on.
Enjoy!
Labels: atoll, EVS, Global Mapper, island, Landsat, map, Marplot, Pacific, Polynesia, Tuamotus
