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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 t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Semboku, Akita
270px, Kakunodate is a city located in Akita Prefecture, Japan. , the city had an estimated population of 24,045 in 10,398 households, and a population density of 22 persons per km2. The total area of the city is . Geography Semboku is located in the mountains of east-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 * Daisen * Kazuno * Kitaakita Iwate Prefecture * Hachimantai * Nishiwaga * Shizukuishi 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 averag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hot Spring
A hot spring, hydrothermal spring, or geothermal spring is a Spring (hydrology), spring produced by the emergence of Geothermal activity, 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 fault (geology), faults to hot rock deep in the Earth's 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 had its origin in hot springs. Humans have made use of hot springs for bathing, relaxation, or medical therapy for th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrochloric Acid
Hydrochloric acid, also known as muriatic acid or spirits of salt, is an aqueous solution of hydrogen chloride (HCl). It is a colorless solution with a distinctive pungency, pungent smell. It is classified as a acid strength, 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. Etymology Because it was produced from halite, rock salt according to the methods of Johann Rudolph Glauber, hydrochloric acid was historically called by European alchemists ''spirits of salt'' or ''acidum salis'' (salt acid). Both names are still used, especially in other languages, such as , , , , , , , , , , (''ensan''), zh, 盐酸 (''yánsuān''), and (''yeomsan''). Gaseous HCl was called ''marine acid air''. The name ''muriatic acid'' has the same origin (''muriatic'' means "pertaining to brine or salt", hence ''muriate'' means hydrochloride), and this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon Dioxide
Carbon dioxide is a chemical compound with the chemical formula . It is made up of molecules that each have one carbon atom covalent bond, covalently double bonded to two oxygen atoms. It is found in a gas state at room temperature and at normally-encountered concentrations it is odorless. As the source of carbon in the carbon cycle, atmospheric is the primary carbon source for life on Earth. In the air, carbon dioxide is transparent to visible light but absorbs infrared, infrared radiation, acting as a greenhouse gas. Carbon dioxide is soluble in water and is found in groundwater, lakes, ice caps, and seawater. It is a trace gas Carbon dioxide in Earth's atmosphere, in Earth's atmosphere at 421 parts per million (ppm), or about 0.042% (as of May 2022) having risen from pre-industrial levels of 280 ppm or about 0.028%. Burning fossil fuels is the main cause of these increased concentrations, which are the primary cause of climate change.IPCC (2022Summary for pol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iron
Iron is a chemical element; it has symbol Fe () 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, forming much of Earth's outer and inner core. It is the fourth most abundant element in the Earth's crust, being mainly deposited by meteorites in its metallic state. Extracting usable metal from iron ores requires kilns or furnaces capable of reaching , about 500 °C (900 °F) higher than that required to smelt copper. Humans started to master that process in Eurasia during the 2nd millennium BC and the use of iron tools and weapons began to displace copper alloys – in some regions, only around 1200 BC. That event is considered the transition from the Bronze Age to the Iron Age. In the modern world, iron alloys, such as steel, stainless steel, cast iron and special steels, are by far the most common industrial metals, due to their mechan ... [...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 baryte, 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 compositi ... [...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 . 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 governs '' ... [...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 area in Akita Prefecture, which is known for the Akita dogs. Afterwards, they spread to the Shirakami-Sanchi forest between Akita and 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 mass-production of reloadable cartridges 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 and Nakatsugaru (Aomori Prefecture), Kitaakita and Senboku (Akita Prefecture), Waga (Iwate Prefecture), Nishiokitama and Tsuruoka (Yamagata Prefecture), Murakami and Nakauonuma (Niigata Prefecture and Nag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulfur
Sulfur ( American spelling and the preferred IUPAC name) or sulphur ( Commonwealth spelling) is a chemical element; it has symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with the 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 common 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". Almost all elemental sulfur is produced as a byproduct of removing sulfur-containing contaminants from natural gas and petroleum.. Downloahere Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asahi Shimbun
is a Japanese daily newspaper founded in 1879. It is one of the oldest newspapers in Japan and Asia, and is considered a newspaper of record for Japan. The ''Asahi Shimbun'' is one of the five largest newspapers in Japan along with the ''Yomiuri Shimbun'', the ''Mainichi Shimbun'', the ''The Nikkei, Nihon Keizai Shimbun'' and ''Chunichi Shimbun''. The newspaper's 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 second List of newspapers in the world by circulation, 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 company, privately held family business with ownership and control remaining with the founding Murayama and Uen ... [...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 Grade (slope), slope, such as a hill or mountain. Avalanches can be triggered spontaneously, by factors such as increased precipitation or snowpack weakening, or by external means such as humans, other 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 collap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
