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Tamagawa Hot Spring
is a hot spring located in the city of Semboku, Akita in northern Japan. Water profile The spring has a flow of 9000 liters/minute and feeds a 3-meter wide stream with a temperature of 98 °C. The water from Tamagawa Hot Spring is extremely acidic, with a pH of about 1.2, making it one of the most acidic hot springs in Japan. Spring overview The spring contains hydrochloric acid as a main component, along with carbon dioxide, iron, and aluminum-chloride. Due to deposits of radioactive hokutolite near the spring, the water is also slightly radioactive, with a level of 15-20 mSv / year. Hokutolite is composed of a type of barite (barium sulfate), including lead and traces of strontium and calcium, and is about ten times as radioactive as the standard background radiation. Radium also exists in the hot springs water. History The springs were discovered by a local ''matagi'' hunter in 1680, but the area was used primarily as a sulfur mine and it was not until 1885 that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Semboku, Akita
is a city located in Akita Prefecture, Japan. , the city had an estimated population of 25,857 in 10,584 households, and a population density of 24 persons per km2. The total area of the city is . Geography Semboku is located in the mountains of central Akita Prefecture, bordering on Iwate Prefecture and the Ōu Mountains on the east. Lake Tazawa, the deepest lake in Japan, is located in the center of the city borders. Parts of the city are within the borders of the Towada-Hachimantai National Park. Neighboring municipalities *Akita Prefecture ** Akita **Kitaakita **Kazuno ** Daisen *Iwate Prefecture ** Hachimantai ** Shizukuishi ** Nishiwaga Climate Semboku has a Humid continental climate (Köppen climate classification ''Dfa'') with large seasonal temperature differences, with warm to hot (and often humid) summers and cold (sometimes severely cold) winters. Precipitation is significant throughout the year, but is heaviest from August to October. The average annual tempera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hot Spring
A hot spring, hydrothermal spring, or geothermal spring is a spring produced by the emergence of geothermally heated groundwater onto the surface of the Earth. The groundwater is heated either by shallow bodies of magma (molten rock) or by circulation through faults to hot rock deep in the Earth's crust. In either case, the ultimate source of the heat is radioactive decay of naturally occurring radioactive elements in the Earth's mantle, the layer beneath the crust. Hot spring water often contains large amounts of dissolved minerals. The chemistry of hot springs ranges from acid sulfate springs with a pH as low as 0.8, to alkaline chloride springs saturated with silica, to bicarbonate springs saturated with carbon dioxide and carbonate minerals. Some springs also contain abundant dissolved iron. The minerals brought to the surface in hot springs often feed communities of extremophiles, microorganisms adapted to extreme conditions, and it is possible that life on Earth ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrochloric Acid
Hydrochloric acid, also known as muriatic acid, is an aqueous solution of hydrogen chloride. It is a colorless solution with a distinctive pungent smell. It is classified as a strong acid. It is a component of the gastric acid in the digestive systems of most animal species, including humans. Hydrochloric acid is an important laboratory reagent and industrial chemical. History In the early tenth century, the Persian physician and alchemist Abu Bakr al-Razi ( 865–925, Latin: Rhazes) conducted experiments with sal ammoniac ( ammonium chloride) and vitriol (hydrated sulfates of various metals), which he distilled together, thus producing the gas hydrogen chloride. In doing so, al-Razi may have stumbled upon a primitive method for producing hydrochloric acid, as perhaps manifested in the following recipe from his ("The Book of Secrets"): However, it appears that in most of his experiments al-Razi disregarded the gaseous products, concentrating instead on the color c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon Dioxide
Carbon dioxide ( chemical formula ) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature. In the air, carbon dioxide is transparent to visible light but absorbs infrared radiation, acting as a greenhouse gas. It is a trace gas in Earth's atmosphere at 421 parts per million (ppm), or about 0.04% by volume (as of May 2022), having risen from pre-industrial levels of 280 ppm. Burning fossil fuels is the primary cause of these increased CO2 concentrations and also the primary cause of climate change.IPCC (2022Summary for policy makersiClimate Change 2022: Mitigation of Climate Change. Contribution of Working Group III to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA Carbon dioxide is soluble in water and is found in groundwater, lakes, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iron
Iron () is a chemical element with symbol Fe (from la, ferrum) and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, right in front of oxygen (32.1% and 30.1%, respectively), forming much of Earth's outer and inner core. It is the fourth most common element in the Earth's crust. In its metallic state, iron is rare in the Earth's crust, limited mainly to deposition by meteorites. Iron ores, by contrast, are among the most abundant in the Earth's crust, although extracting usable metal from them requires kilns or furnaces capable of reaching or higher, about higher than that required to smelt copper. Humans started to master that process in Eurasia during the 2nd millennium BCE and the use of iron tools and weapons began to displace copper alloys, in some regions, only around 1200 BCE. That event is considered the transition from the Bronze Age to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hokutolite
Hokutolite is the only mineral named after a Taiwanese place (Hokuto is the Japanese name for Beitou) among the more than 4,000 naturally occurring minerals in the world. Hokutolite is a rare mineral containing radioactive radium elements generated by the hot spring environment, and is currently found only in Beitou Hot Spring in Taipei City, and Tamagawa Hot Spring in Akita Prefecture, Japan. In Japan, the Ministry of Education, Culture, Sports, Science, and Technology has designated it as a " Special Natural Monument". In Taiwan, it is designated as a "Natural Cultural Landscape", and the Taipei City Government has designated a natural reserve in the Beitou River upstream of the Beitou Hot Spring Museum. Characteristics Hokutolite is a subspecies of barite, a sulfate mineral of the orthorhombic system. The chemical composition of Hokutolite varies greatly, especially when it has a structure of light and dark interphase rings, and the molecular formula of the chemical composition ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barite
Baryte, barite or barytes ( or ) is a mineral consisting of barium sulfate ( Ba S O4). Baryte is generally white or colorless, and is the main source of the element barium. The ''baryte group'' consists of baryte, celestine (strontium sulfate), anglesite (lead sulfate), and anhydrite (calcium sulfate). Baryte and celestine form a solid solution (Ba,Sr)SO4. Names and history The radiating form, sometimes referred to as ''Bologna Stone'', attained some notoriety among alchemists for specimens found in the 17th century near Bologna by Vincenzo Casciarolo. These became phosphorescent upon being calcined. Carl Scheele determined that baryte contained a new element in 1774, but could not isolate barium, only barium oxide. Johan Gottlieb Gahn also isolated barium oxide two years later in similar studies. Barium was first isolated by electrolysis of molten barium salts in 1808 by Sir Humphry Davy in England. The American Petroleum Institute specification API 13/ ISO 13500, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Matagi
The are traditional winter hunters of the Tōhoku region of northern Japan, most famously today in the Ani, Akita, Ani area in Akita Prefecture, which is known for the Akita dogs. Afterwards, it spread to the Shirakami-Sanchi forest between Akita, Akita, Akita and Aomori, Aomori, Aomori, and other areas of Japan. Documented as a specialised group from the medieval period onwards, the Matagi continue to hunt deer and bear in the present day, and their culture has much in common with the bear worship of the Ainu people. With the introduction of modern firearms in the 19th century, and the rise of domestic rifle manufacture beginning with the Murata rifle, the need for group hunting for bear has diminished, leading to a decline in Matagi culture. Matagi hamlets are found in the districts of Nishitsugaru District, Aomori, Nishitsugaru and Nakatsugaru District, Aomori, Nakatsugaru (Aomori Prefecture), Kitaakita District, Akita, Kitaakita and Senboku District, Akita, Senboku (Akita P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulfur
Sulfur (or sulphur in British English) is a chemical element with the symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula S8. Elemental sulfur is a bright yellow, crystalline solid at room temperature. Sulfur is the tenth most abundant element by mass in the universe and the fifth most on Earth. Though sometimes found in pure, native form, sulfur on Earth usually occurs as sulfide and sulfate minerals. Being abundant in native form, sulfur was known in ancient times, being mentioned for its uses in ancient India, ancient Greece, China, and ancient Egypt. Historically and in literature sulfur is also called brimstone, which means "burning stone". Today, almost all elemental sulfur is produced as a byproduct of removing sulfur-containing contaminants from natural gas and petroleum.. Downloahere The greatest commercial use of the element is the producti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asahi Shimbun
is one of the four largest newspapers in Japan. Founded in 1879, it is also one of the oldest newspapers in Japan and Asia, and is considered a newspaper of record for Japan. Its circulation, which was 4.57 million for its morning edition and 1.33 million for its evening edition as of July 2021, was second behind that of the '' Yomiuri Shimbun''. By print circulation, it is the third largest newspaper in the world behind the ''Yomiuri'', though its digital size trails that of many global newspapers including '' The New York Times''. Its publisher, is a media conglomerate with its registered headquarters in Osaka. It is a privately held family business with ownership and control remaining with the founding Murayama and Ueno families. According to the Reuters Institute Digital Report 2018, public trust in the ''Asahi Shimbun'' is the lowest among Japan's major dailies, though confidence is declining in all the major newspapers. The ''Asahi Shimbun'' is one of the five la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tamagawa Onsen (31837868458)
is a hot spring located in the city of Semboku, Akita in northern Japan. Water profile The spring has a flow of 9000 liters/minute and feeds a 3-meter wide stream with a temperature of 98 °C. The water from Tamagawa Hot Spring is extremely acidic, with a pH of about 1.2, making it one of the most acidic hot springs in Japan. Spring overview The spring contains hydrochloric acid as a main component, along with carbon dioxide, iron, and aluminum-chloride. Due to deposits of radioactive hokutolite near the spring, the water is also slightly radioactive, with a level of 15-20 mSv / year. Hokutolite is composed of a type of barite (barium sulfate), including lead and traces of strontium and calcium, and is about ten times as radioactive as the standard background radiation. Radium also exists in the hot springs water. History The springs were discovered by a local ''matagi'' hunter in 1680, but the area was used primarily as a sulfur mine and it was not until 1885 that th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Avalanche
An avalanche is a rapid flow of snow down a slope, such as a hill or mountain. Avalanches can be set off spontaneously, by such factors as increased precipitation or snowpack weakening, or by external means such as humans, animals, and earthquakes. Primarily composed of flowing snow and air, large avalanches have the capability to capture and move ice, rocks, and trees. Avalanches occur in two general forms, or combinations thereof: slab avalanches made of tightly packed snow, triggered by a collapse of an underlying weak snow layer, and loose snow avalanches made of looser snow. After being set off, avalanches usually accelerate rapidly and grow in mass and volume as they capture more snow. If an avalanche moves fast enough, some of the snow may mix with the air, forming a powder snow avalanche. Though they appear to share similarities, avalanches are distinct from slush flows, Mudflow, mudslides, Landslide#Debris landslide, rock slides, and serac collapses. They are also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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