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Deep Bay Crater
Deep Bay is a bay near the south-western tip of Reindeer Lake in Saskatchewan, Canada. The bay is strikingly circular and very deep (220 m) in an otherwise irregular and shallow lake. It is the deepest body of water in Saskatchewan. The bay was formed in a 13 km wide impact crater. The age of the crater is estimated to be 99 ± 4 million years (Cretaceous). The smaller Gow crater, of Triassic The Triassic ( ) is a geologic period and system (stratigraphy), system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago (Year#Abbreviations yr and ya, Mya), to the beginning of the Jurassic Period 201.36 ... age, is approximately 90 km west of Deep Bay crater. References External linksAerial exploration of the Deep Bay crater Impact craters of Saskatchewan Cretaceous impact craters Division No. 18, Saskatchewan {{cretaceous-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landsat
The Landsat program is the longest-running enterprise for acquisition of satellite imagery of Earth. It is a joint NASA / USGS program. On 23 July 1972, the Earth Resources Technology Satellite was launched. This was eventually renamed to Landsat 1 in 1975. The most recent, Landsat 9, was launched on 27 September 2021. The instruments on the Landsat satellites have acquired millions of images. The images, archived in the United States and at Landsat receiving stations around the world, are a unique resource for global change research and applications in agriculture, cartography, geology, forestry, regional planning, surveillance and education, and can be viewed through the U.S. Geological Survey (USGS) "EarthExplorer" website. Landsat 7 data has eight spectral bands with spatial resolutions ranging from ; the temporal resolution is 16 days. Landsat images are usually divided into scenes for easy downloading. Each Landsat scene is about 115 miles long and 115 miles wide (or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
