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Söderfjärden
Söderfjärden is a polder in Ostrobothnia (administrative region), Ostrobothnia, western Finland, 10 kilometres south of the town of Vaasa. The plain is in an impact crater dating back to more than 640 million years ago (Proterozoic, near the end of the Cryogenian). The crater's diameter is and its maximum depth is . It is filled with Cambrian sandstones leaving only the outer rim visible. There is also a central uplift, which is buried. After rising from the sea due to post-glacial rebound, Söderfjärden was a wetland but was later drained with help of a pump station. It is currently cultivated and is clearly visible from air as a large hexagonal field. This makes Söderfjärden unique among the other impact structures in Finland which are at least partially below sea level. The area of the basin is divided half and half between Vaasa and Korsholm, with a small corner belonging to Malax. See also *Impact craters in Finland References External links Sundom villagetravel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Impact Craters In Finland
As of June 2018, 12 confirmed impact structures have been found in Finland. They are listed below, sorted by original diameter. Note 1: The "original" crater dimensions are coarse estimates. Original depths were calculated using the given original diameter using thImpact: Earth!program. Note 2: "Current solid surface" topography is calculated from the deepest floor (regardless whether it is underwater or on dry land) to highest rim crest; other depth values give the depth of the floor in relation to the original terrain, thus excluding the rim and/or central uplift. Note 3: Evidence for impact origin for a given structure is often provided in several publications. The year column includes some publications where some evidence of impact origin was provided even though an impact was not necessarily suggested by the authors; somewhere an impact was suggested even though the proof wasn't conclusive; and somewhere definite proof was provided. General note 1: Crater sizes and shapes var ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polder
A polder () is a low-lying tract of land that forms an artificial hydrology, hydrological entity, enclosed by embankments known as levee, dikes. The three types of polder are: # Land reclamation, Land reclaimed from a body of water, such as a lake or the seabed # Floodplain, Flood plains separated from the sea or river by a dike # Marshes separated from the surrounding water by a dike and subsequently drained; these are also known as ''koogs'', especially in Germany The ground level in drained marshes subsidence, subsides over time. All polders will eventually be below the surrounding water level some or all of the time. Water enters the low-lying polder through infiltration (hydrology), infiltration and water pressure of groundwater, or rainfall, or transport of water by rivers and canals. This usually means that the polder has an excess of water, which is pumped out or drained by opening sluices at low tide. Care must be taken not to set the internal water level too low. Pold ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vaasa
Vaasa (; , ), formerly (1855-1917) known as Nikolaistad (; ),Vaasa oli ennen Nikolainkaupunki ja Aurinkolahti Mustalahti – paikannimiä ei kuitenkaan pidä muuttaa heppoisin perustein – ''Kaleva (newspaper), Kaleva'' (in Finnish) is a city in Finland and the regional capital of Ostrobothnia (administrative region), Ostrobothnia. It is located on the west coast of the country, on the Gulf of Bothnia. The population of Vaasa is approximately , while the Vaasa sub-region, sub-region has a population of approximately . It is the most populous Municipalities of Finland, municipality in Finland, and the tenth most populous List of urban areas in Finland by population, urban area in the countr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landsat Program
The Landsat program is the longest-running enterprise for acquisition of satellite imagery of Earth. It is a joint National Aeronautics and Space Administration, NASA / United States Geological Survey, USGS program. On 23 July 1972, the Landsat 1, 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 Image resolution#Spatial resolution, spatial resolutions ranging from ; the temporal resolution is 16 days. Landsat ima ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korsholm
Korsholm (; ) is a municipality in Finland, located on the west coast of the country. Korsholm is situated in Ostrobothnia (administrative region), Ostrobothnia, along the Gulf of Bothnia. The population of Korsholm is approximately , while the Vaasa sub-region, sub-region has a population of approximately . It is the most populous Municipalities of Finland, municipality in Finland. The town of Vaasa was founded in Korsholm parish in 1606 and today the municipality completely surrounds the city. It is a coastal, mostly rural municipality, consisting of a rural landscape and a large, fractured archipelago. The administrative center is Smedsby, situated from Vaasa center along Finnish national road 8. Korsholm is a bilingual municipality with Finnish language, Finnish and Swedish language, Swedish as its official languages. The population consists of Finnish speakers, Swedish speakers, and speakers of other languages. Geography It is located in the provinces of Finland, prov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proterozoic Impact Craters
The Proterozoic ( ) is the third of the four geologic eons of Earth's history, spanning the time interval from 2500 to 538.8 Mya, and is the longest eon of Earth's geologic time scale. It is preceded by the Archean and followed by the Phanerozoic, and is the most recent part of the Precambrian "supereon". The Proterozoic is subdivided into three geologic eras (from oldest to youngest): the Paleoproterozoic, Mesoproterozoic and Neoproterozoic. It covers the time from the appearance of free oxygen in Earth's atmosphere to just before the proliferation of complex life on the Earth during the Cambrian Explosion. The name ''Proterozoic'' combines two words of Greek origin: meaning "former, earlier", and , meaning "of life". Well-identified events of this eon were the transition to an oxygenated atmosphere during the Paleoproterozoic; the evolution of eukaryotes via symbiogenesis; several global glaciations, which produced the 300 million years-long Huronian glaciation (during ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Impact Craters Of Finland
Impact may refer to: * Impact (mechanics), a large force or mechanical shock over a short period of time * Impact, Texas, a town in Taylor County, Texas, US Science and technology * Impact crater, a meteor crater caused by an impact event * Impact event, the collision of a meteoroid, asteroid or comet with Earth * Impact factor, a measure of the citations to a science or social science journal * Impact wrench, a socket wrench power tool capable of high torque Books and magazines * ''Impact'' (novel), a 2010 novel by Douglas Preston *'' Impact Press'', a former Orlando, Florida-based magazine * Impact Magazines, a former UK magazine publisher * ''Impact'' (conservative magazine), a British political magazine * ''Impact'' (British magazine), a British action film magazine * ''Impact'', a French action film magazine spun off from ''Mad Movies'' * ''Impact'' (UNESCO magazine), a former UNESCO quarterly titled ''IMPACT of science on society'' * ''Impact'' (student magazine), a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barn
A barn is an agricultural building usually on farms and used for various purposes. In North America, a barn refers to structures that house livestock, including cattle and horses, as well as equipment and fodder, and often grain.Allen G. Noble, ''Traditional Buildings: A Global Survey of Structural Forms and Cultural Functions'' (New York: Tauris, 2007), 30. As a result, the term barn is often qualified e.g. tobacco barn, dairy barn, cow house, sheep barn, potato barn. In the British Isles, the term barn is restricted mainly to storage structures for unthreshed cereals and fodder, the terms byre or shippon being applied to cow shelters, whereas horses are kept in buildings known as stables. In mainland Europe, however, barns were often part of integrated structures known as byre-dwellings (or housebarns in US literature). In addition, barns may be used for equipment storage, as a covered workplace, and for activities such as threshing. Etymology The word ''barn'' c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NASA Earth Observatory
NASA Earth Observatory is an online publishing outlet for NASA which was created in 1999. It is the principal source of satellite imagery and other scientific information about the climate and the environment which are being provided by NASA for consumption by the general public. It is funded with public money, as authorized by the United States Congress, and is part of the EOS Project Science Office located at Goddard Space Flight Center. , NASA Earth Observatory has won the Webby People's Voice Award in Education three times. There were a series of publicized images issued by the website in 2008, including imagery of clouds streaming over the Caspian Sea, dust storms curling off the coast of Morocco, the crumbling of the Wilkins Ice Shelf, Hurricane Bertha, and others. See also * Earth observation * Earth observation satellite * Space exploration Space exploration is the process of utilizing astronomy and space technology to investigate outer space. While the expl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malax
Malax (; , ) is a municipality in Finland, located on the west coast of the country. Malax is situated in Ostrobothnia, along the Gulf of Bothnia. The population of Malax is approximately , while the sub-region A subregion is a part of a larger geographical region or continent. Cardinal directions are commonly used to define subregions. There are many criteria for creating systems of subregions; this article is focusing on the United Nations geoscheme ... has a population of approximately . It is the most populous Municipalities of Finland, municipality in Finland. Malax covers an area of of which is water. The population density is . Malax is a bilingual municipality with Finnish language, Finnish and Swedish language, Swedish as its official languages. The population consists of Finnish speakers, Swedish speakers, and speakers of other languages. Name The town's Swedish name has been recorded as ''Malax (wiktionary:by#Swedish, by)'' and ''Madelax (by)'', beginning in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sandstone
Sandstone is a Clastic rock#Sedimentary clastic rocks, clastic sedimentary rock composed mainly of grain size, sand-sized (0.0625 to 2 mm) silicate mineral, silicate grains, Cementation (geology), cemented together by another mineral. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar, because they are the most resistant minerals to the weathering processes at the Earth's surface. Like uncemented sand, sandstone may be imparted any color by impurities within the minerals, but the most common colors are tan, brown, yellow, red, grey, pink, white, and black. Because sandstone beds can form highly visible cliffs and other topography, topographic features, certain colors of sandstone have become strongly identified with certain regions, such as the red rock deserts of Arches National Park and other areas of the Southwestern United States, American Southwest. Rock formations composed of sandstone usually allow the p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
