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21-796: Roche Michel is a mountain peak in the Graian Alps in Savoie , very close to the Italian border. The land around Roche Michel is mostly mountainous. [note 3] The highest point in the area is Pointe de Charbonnel , 3,752 meters above sea level, 5.8 km northeast of Roche Michel. [note 4] To the North is Pointe des Fallets (3,226m) and to the West Pointe du Lamet (3,504m) and to the Northwest Pointe de la Haie (3452m), which surround and enclose

42-679: A dash ; for example, 1-21-00.26 ha would mean 1 hectare, 21 ares, and 0.26 centiares (12,100.26 m ). The metric system of measurement was first given a legal basis in 1795 by the French Revolutionary government. The law of 18 Germinal, Year III (7 April 1795) defined five units of measure: In 1960, when the metric system was updated as the International System of Units (SI), the are did not receive international recognition. The International Committee for Weights and Measures ( CIPM ) makes no mention of

63-404: A double prefix is non-standard. The decimilliare is (100 mm) or roughly a four-inch-by-four-inch square. The centiare is one square metre. The deciare (rarely used) is ten square metres. The are ( / ɑːr / or / ɛər / ) is a unit of area, equal to 100 square metres ( 10 m × 10 m ), used for measuring land area. It was defined by older forms of the metric system , but

84-439: A few other units including the are (and implicitly the hectare ) whose use was limited to the measurement of land. The names centiare , deciare , decare and hectare are derived by adding the standard metric prefixes to the original base unit of area, the are . The decimilliare (dma, sometimes seen in cadastre area evaluation of real estate plots) is 1 ⁄ 10,000 are or one square decimetre. Such usage of

105-550: A measure of land area. The names of the older land measures of similar size are usually used, redefined as exactly one decare: The most commonly used units are in bold . One hectare is also equivalent to: The Unicode character U+33CA ㏊ SQUARE HA , in the CJK Compatibility block, is intended for compatibility with pre-existing East Asian character codes. It is not intended for use in alphabetic contexts. U+3336 ㌶ SQUARE HEKUTAARU

126-439: Is a non-SI metric unit of area equal to a square with 100- metre sides (1 hm ), that is, 10,000 square metres (10,000 m ), and is primarily used in the measurement of land. There are 100 hectares in one square kilometre. An acre is about 0.405 hectares and one hectare contains about 2.47 acres. In 1795, when the metric system was introduced, the are was defined as 100 square metres , or one square decametre , and

147-472: Is continental. The average temperature is 7 °C. The warmest month is July, at 18 °C, and the coldest is December, at −3 °C. The average rainfall is 1,287 millimeters per year. The wettest month is November, with 197 millimeters of rain, and the driest is September, with 64 millimeters. Roche Michel was first climbed by Horace Bénédict de Saussure in 1780. In November 2010, 3 hikers were killed in an avalanche during their attempt to climb Roche Michel. Access

168-625: Is drained by the rivers Dora Riparia , Dora Baltea , Orco and Stura di Lanzo , tributaries of the Po . The Graian Alps can also be divided into the following four groups: The main peaks of the Graian Alps are: It also includes Roche Michel at 3429 m. The main passes of the Graian Alps are shown in the table below. The group in which the pass is located is indicated with "MB" for Mont Blanc group, "C" for Central group, "E" for Eastern group, and "W" for Western group. The western group contains

189-658: Is either from the Southeast or via a very long itinerary from the Southwest. It requires good mountaineering skills, in an environment without trails. For access via Mont Cenise from the SW the minimum time required is around 8 hours only to 3,253m, considerably longer to the peak of Roche Michel and various descent variants. The climb starts at Mont Cenise via Rifugio Stellina, passing the Baraccon de Chamois cottages (2655m). When

210-456: Is now outside the modern International System of Units (SI). It is still commonly used in speech to measure real estate, in particular in Indonesia, India, and in various European countries. In Russian and some other languages of the former Soviet Union , the are is called sotka (Russian: сотка : 'a hundred', i.e. 100 m or 1 ⁄ 100 hectare). It is used to describe

231-651: The Vanoise National Park , established in 1972 and covering 1,250 km (480 sq mi) the eastern group contains the Gran Paradiso National Park , the oldest Italian national park. Also on the Italian side is located the Parco Regionale del Monte Avic , a nature park of 5,747 ha established by Regione Valle d'Aosta . Hectares The hectare ( / ˈ h ɛ k t ɛər , - t ɑːr / ; SI symbol: ha )

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252-641: The are in the 2019 edition of the SI brochure, but classifies the hectare as a "Non-SI unit accepted for use with the International System of Units". In 1972, the European Economic Community (EEC) passed directive 71/354/EEC, which catalogued the units of measure that might be used within the Community. The units that were catalogued replicated the recommendations of the CGPM, supplemented by

273-475: The Glacier de Roche Michel in a depression. In the region around Roche Michel, mountains, and ice are very common. [note 5] while the surrounding area is almost covered in mixed forest. The nearest larger town is Lanslebourg-Mont-Cenis , 12.0 km west of Roche Michel. Per NASA calculation, about 222 people per square kilometer live around Roche Michel, which would be relatively densely populated. The climate

294-465: The SI, being equivalent to a square hectometre. It is widely used throughout the world for the measurement of large areas of land, and it is the legal unit of measure in domains concerned with land ownership, planning, and management , including law ( land deeds ), agriculture, forestry , and town planning throughout the European Union , New Zealand and Australia (since 1970). However,

315-1010: The United Kingdom, the United States, Myanmar (Burma), and to some extent Canada, use the acre instead of the hectare for measuring surface or land area. Some countries that underwent a general conversion from traditional measurements to metric measurements (e.g. Canada) required a resurvey when units of measure in legal descriptions relating to land were converted to metric units. Others, such as South Africa, published conversion factors which were to be used particularly "when preparing consolidation diagrams by compilation". In many countries, metrification redefined or clarified existing measures in terms of metric units. The following legacy units of area have been redefined as being equal to one hectare: In Mexico, land area measurements are commonly given as combinations of hectares, ares, and centiares. These are commonly written separated by

336-514: The dekare/decare daa (1,000 m ) and are (100 m ) are not officially "accepted for use", they are still used in some contexts. The hectare ( / ˈ h ɛ k t ɛər , - t ɑː r / ), although not a unit of SI, is the only named unit of area that is accepted for use with SI units . The name was coined in French, from the Latin ārea . In practice the hectare is fully derived from

357-478: The hectare (" hecto- " + "are") was thus 100 ares or 1 ⁄ 100  km (10,000 square metres). When the metric system was further rationalised in 1960, resulting in the International System of Units ( SI ), the are was not included as a recognised unit. The hectare, however, remains as a non-SI unit accepted for use with the SI and whose use is "expected to continue indefinitely". Though

378-642: The highest peak marked with a stone cairn. Graian Alps The Graian Alps ( French : Alpes grées [alp ɡʁe] ; Italian : Alpi Graie [ˈalpi ˈɡraːje] ) are a mountain range in the western part of the Alps . The name Graie comes from the Graioceli Celtic tribe, which dwelled in the area surrounding the Mont Cenis pass and the Viù valley. Other sources claim that

399-710: The name comes from the Celtic "Graig" meaning rock/stone, literally the Rocky Mountains The Graian Alps are located in France ( Auvergne-Rhône-Alpes ), Italy ( Piedmont and the Aosta Valley ), and Switzerland (western Valais ). The French side of the Graian Alps is drained by the river Isère ( Tarentaise valley ) and its tributary Arc ( Maurienne valley), and by the Arve . The Italian side

420-595: The size of suburban dacha or allotment garden plots or small city parks where the hectare would be too large. Many Russian dachas are 6 ares in size (in Russian, шесть соток ). The decare or dekare ( / ˈ d ɛ k ɑːr , - ɛər / ) is derived from deca and are , and is equal to 10 ares or 1000 square metres. It is used in Norway and in the former Ottoman areas of the Middle East and Bulgaria as

441-590: The trail continues downhill, one crosses a stream. Just before the Lamet cottages, one starts to climb in Northeasterly direction over steep meadows to reach a ridge at 2,500m. The steep ridge leads into the upper part of Pian Ciardun, following the grassy slopes that then open into a field of debris and boulder towards the base of the wall of 3,253m. One climbs the ridge in Northwesterly direction to reach

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