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Kavir Desert
Dasht-e Kavir ( fa, دشت كوير, lit=Low Plains in classical Persian, from ''khwar'' (low), and ''dasht'' (plain, flatland)), also known as Kavir-e Namak () and the Great Salt Desert, is a large desert lying in the middle of the Iranian Plateau. It is about long by wide with a total surface area of about , making it the world's 24th largest desert. The area of this desert stretches from the Alborz mountain range in the north-west to the Dasht-e Lut in the south-east. It is partitioned among the Iranian provinces of Khorasan, Semnan, Tehran, Isfahan and Yazd. Features In the center of the desert lies the Kavir Buzurg (Great Kavir), which is about 320 km long and wide. In the western part of the desert lies the Daryahcheh-e Namak ("salt lake"), . It contains some large salt plates in a mosaic-like shape. It is part of a protected ecological zone, the Kavir National Park. One of the most desolate parts of Dasht-e Kavir is the Rig-e Jenn (‘ Dune of the Jinn’) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rig-e Jenn
The Rig Jenn ( fa, ریگ جن ‘wikt:ریگ, Dune of the Jinn’) is a vast area of sand dunes in the middle of Dasht-e Kavir, Iran's central desert in the border region of the Semnan province, Semnan and Isfahan provinces. It was not travelled by the old Caravan (travellers), caravan travellers, who believed it is a place where evil spirits live. Even today some in the neighbouring towns and villages believe this. Sven Hedin, the famous desert explorer avoided this area in his 1900s explorations to Iranian deserts. The Austrian geographer Alfons Gabriel crossed the southern 'tail' of it on his way from Ashin, Iran, Ashin to Arusan in the 1930s. Dunes of Iran Landforms of Semnan Province Jinn-related places Landforms of Isfahan Province Ergs {{Isfahan-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cold Desert Climate
The desert climate or arid climate (in the Köppen climate classification ''BWh'' and ''BWk''), is a dry climate sub-type in which there is a severe excess of evaporation over precipitation. The typically bald, rocky, or sandy surfaces in desert climates are dry and hold little moisture, quickly evaporating the already little rainfall they receive. Covering 14.2% of earth's land area, hot deserts are the second most common type of climate on earth after the polar climate. There are two variations of a desert climate according to the Köppen climate classification: a hot desert climate (''BWh''), and a cold desert climate (''BWk''). To delineate "hot desert climates" from "cold desert climates", there are three widely used isotherms: most commonly a mean annual temperature of , or sometimes the coldest month's mean temperature of , so that a location with a ''BW'' type climate with the appropriate temperature above whichever isotherm is being used is classified as "hot arid sub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grass
Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in lawns and pasture. The latter are commonly referred to collectively as grass. With around 780 genera and around 12,000 species, the Poaceae is the fifth-largest plant family, following the Asteraceae, Orchidaceae, Fabaceae and Rubiaceae. The Poaceae are the most economically important plant family, providing staple foods from domesticated cereal crops such as maize, wheat, rice, barley, and millet as well as feed for meat-producing animals. They provide, through direct human consumption, just over one-half (51%) of all dietary energy; rice provides 20%, wheat supplies 20%, maize (corn) 5.5%, and other grains 6%. Some members of the Poaceae are used as building materials (bamboo, thatch, and straw); others can provide a source of biofuel, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shrub
A shrub (often also called a bush) is a small-to-medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees by their multiple stems and shorter height, less than tall. Small shrubs, less than 2 m (6.6 ft) tall are sometimes termed as subshrubs. Many botanical groups have species that are shrubs, and others that are trees and herbaceous plants instead. Some definitions state that a shrub is less than and a tree is over 6 m. Others use as the cut-off point for classification. Many species of tree may not reach this mature height because of hostile less than ideal growing conditions, and resemble a shrub-sized plant. However, such species have the potential to grow taller under the ideal growing conditions for that plant. In terms of longevity, most shrubs fit in a class between perennials and trees; some may only last about five y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Half Mountain, Dasht-e Kavir Desert
One half ( : halves) is the irreducible fraction resulting from dividing one by two or the fraction resulting from dividing any number by its double. Multiplication by one half is equivalent to division by two, or "halving"; conversely, division by one half is equivalent to multiplication by two, or "doubling". One half often appears in mathematical equations, recipes, measurements, etc. Half can also be said to be one part of something divided into two equal parts. For instance, the area ''S'' of a triangle is computed. :''S'' = × perpendicular height. One half also figures in the formula for calculating figurate numbers, such as triangular numbers and pentagonal numbers: : \frac and in the formula for computing magic constants for magic squares : M_2(n) = \frac \left(n^ + 1\right) The Riemann hypothesis states that every nontrivial complex root of the Riemann zeta function has a real part equal to . One half has two different decimal expansions, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monsoonal
A monsoon () is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal oscillation of the Intertropical Convergence Zone (ITCZ) between its limits to the north and south of the equator. Usually, the term monsoon is used to refer to the rainy phase of a seasonally changing pattern, although technically there is also a dry phase. The term is also sometimes used to describe locally heavy but short-term rains. The major monsoon systems of the world consist of the West African, Asia–Australian, the North American, and South American monsoons. The term was first used in English in British India and neighboring countries to refer to the big seasonal winds blowing from the Bay of Bengal and Arabian Sea in the southwest bringing heavy rainfall to the area. Etymology The etymology of the word monsoon is not wholly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yazd
Yazd ( fa, یزد ), formerly also known as Yezd, is the capital of Yazd Province, Iran. The city is located southeast of Isfahan. At the 2016 census, the population was 1,138,533. Since 2017, the historical city of Yazd is recognized as a World Heritage Site by UNESCO. Because of generations of adaptations to its desert surroundings, Yazd has a unique Persian architecture. It is nicknamed the "City of Windcatchers" ( ''Shahr-e Badgirha'') from its many examples. It is also very well known for its Zoroastrian fire temples, ab anbars (cisterns), qanats (underground channels), yakhchals (coolers), Persian handicrafts, handwoven cloth (''Persian termeh''), silk weaving, Persian cotton candy, and its time-honored confectioneries. Yazd is also known as City of Bicycles, because of its old history of bike riders, and the highest number of bicycles per capita in Iran. It is reported that bicycle culture in Iran originated in Yazd as a result of contact with European visitors and tou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tall-i Bakun
Tall-i Bakun or Tall-e Bakun (in modern Fars Province, Iran) was a prehistoric site in the Ancient Near East about 3 km south of Persepolis. It was inhabited around 4000-3500 BC. Archaeology The site consists of two mounds, A and B. In 1928, exploratory excavation was done by Ernst Herzfeld, of the University of Berlin. Alexander Langsdorff and Donald McCown conducted full scale excavations in 1932. Additional work was done at the site in 1937 by Erich Schmidt leading the Persepolis Expedition of the Oriental Institute of the University of Chicago. Some limited work was done at Tall-i Bakun by a team from the Tokyo University led by Namio Egami and Seiichi Masuda in 1956. The most recent excavations were by a joint team of the Oriental Institute and the Iranian Cultural Heritage and Tourism Organisation. History The site was active from circa 6th millennium BC to circa 4th millennium BC. Tall-i Bakun phase A was inhabited c. 4000-3500 BCE. Four layers can be distinguis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sialk
Tepe Sialk ( fa, تپه سیلک) is a large ancient archeological site (a ''tepe'', "hill, tell") in a suburb of the city of Kashan, Isfahan Province, in central Iran, close to Fin Garden. The culture that inhabited this area has been linked to the Zayandeh River Culture. History A joint study between Iran's Cultural Heritage Organization, the Louvre, and the Institut Francais de Recherche en Iran also verifies the oldest settlements in Sialk to date to around 6000–5500 BC. The Sialk ziggurat was built around 3000 BC. Sialk, and the entire area around it, is thought to have originated as a result of the pristine large water sources nearby that still run today. The Cheshmeh ye Soleiman ("Solomon's Spring") has been bringing water to this area from nearby mountains for thousands of years. The Fin garden, built in its present form in the 17th century, is a popular tourist attraction. It is here that the kings of the Safavid dynasty would spend their vacations away from their c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monsoon
A monsoon () is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal oscillation of the Intertropical Convergence Zone (ITCZ) between its limits to the north and south of the equator. Usually, the term monsoon is used to refer to the rainy phase of a seasonally changing pattern, although technically there is also a dry phase. The term is also sometimes used to describe locally heavy but short-term rains. The major monsoon systems of the world consist of the West African, Asia–Australian, the North American, and South American monsoons. The term was first used in English in British India and neighboring countries to refer to the big seasonal winds blowing from the Bay of Bengal and Arabian Sea in the southwest bringing heavy rainfall to the area. Etymology The etymology of the word monsoon is not wholl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Post-glacial
The Holocene ( ) is the current geological epoch. It began approximately 11,650 cal years Before Present (), after the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene together form the Quaternary period. The Holocene has been identified with the current warm period, known as MIS 1. It is considered by some to be an interglacial period within the Pleistocene Epoch, called the Flandrian interglacial.Oxford University Press – Why Geography Matters: More Than Ever (book) – "Holocene Humanity" section https://books.google.com/books?id=7P0_sWIcBNsC The Holocene corresponds with the rapid proliferation, growth and impacts of the human species worldwide, including all of its written history, technological revolutions, development of major civilizations, and overall significant transition towards urban living in the present. The human impact on modern-era Earth and its ecosystems may be considered of global sig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steppe
In physical geography, a steppe () is an ecoregion characterized by grassland plains without trees apart from those near rivers and lakes. Steppe biomes may include: * the montane grasslands and shrublands biome * the temperate grasslands, savannas and shrublands biome A steppe may be semi-arid or covered with grass or with shrubs or with both, depending on the season and latitude. The term " steppe climate" denotes the climate encountered in regions too dry to support a forest but not dry enough to be a desert. Steppe soils are typically of the chernozem type. Steppes are usually characterized by a semi-arid or continental climate. Extremes can be recorded in the summer of up to and in winter, . Besides this major seasonal difference, fluctuations between day and night are also very great. In both the highlands of Mongolia and northern Nevada, can be reached during the day with sub-freezing readings at night. Mid-latitude steppes feature hot summers and cold wint ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
