Height above mean sea level is a measure of a location's vertical distance ( height , elevation or altitude ) in reference to a vertical datum based on a historic mean sea level . In geodesy , it is formalized as orthometric height . The zero level varies in different countries due to different reference points and historic measurement periods. Climate change and other forces can cause sea levels and elevations to vary over time.
11-797: Holme Moss (1,719 feet or 524 metres a.s.l. ) is high moorland on the border between the Holme Valley district of Kirklees in West Yorkshire and the High Peak district of Derbyshire in England. Historically on the boundary between the West Riding of Yorkshire and Cheshire , it is just inside the boundary of the Peak District National Park . The A6024 road between Holmfirth and Longdendale crosses
22-674: A relative lowering of mean sea level. Wincanton Classic Wincanton Classic (also known as Leeds International Classic and Rochester International Classic ) was a cycling classic taking place in the United Kingdom as part of the UCI Road World Cup . It was first held in 1989 in Newcastle , moving to Brighton in 1990 and 1991. The following year it was moved to Leeds , to be known as Leeds International Classic between 1994 and 1996. In its last year it
33-681: The 2014 Tour de France followed the route across the Pennines to Derbyshire. The leader over the summit was Blel Kadri from France. Above mean sea level Elevation or altitude above sea level is a standard measurement for: Elevation or altitude is generally expressed as " metres above mean sea level" in the metric system , or " feet above mean sea level" in United States customary and imperial units . Common abbreviations in English are: For elevations or altitudes, often just
44-599: The A6024 (Woodhead Road) which crosses the moor, between the village of Holmbridge to the north and the Woodhead Reservoir to the south. The northern side in particular is one of England's best known bicycle ascents, and has acquired a reputation as among the country's more difficult climbs. It has often been used for domestic competition in British road racing and mountain biking . Starting from Holmfirth, to
55-581: The River Colne . The upper part of the moor continues into Black Hill which is crossed by the Pennine Way north–south footpath. Holme Moss transmitting station is the highest in England. Now it provides VHF coverage for FM and DAB to a wide area around the transmitter including West Yorkshire , South Yorkshire , Greater Manchester and parts of Cheshire , Derbyshire and Nottinghamshire . The FM signals operate at 250 kW from one of
66-461: The cols of European bicycle racing, the length and difficulty of Holme Moss relative to other British climbs has made it a frequent and popular inclusion in British races, including the Tour of Britain . For many years the (now defunct) Leeds Classic race saw internationally renowned riders (many of them, such as Bjarne Riis , veterans of the Tour de France ) tackling the climb. The second stage of
77-521: The abbreviation MSL is used, e.g., Mount Everest (8849 m MSL), or the reference to sea level is omitted completely, e.g., Mount Everest (8849 m). Altimetry is the measurement of altitude or elevation above sea level. Common techniques are: Accurate measurement of historical mean sea levels is complex. Land mass subsidence (as occurs naturally in some regions) can give the appearance of rising sea levels . Conversely, markings on land masses that are uplifted (due to geological processes) can suggest
88-465: The moor near its highest point close to Holme Moss transmitting station 's prominent mast. Water seeping from the surrounding moorland into Rake Dike is the source of the River Holme . Rake Dike rising from Kay Edge on the moor flows through the village of Holme into Brownhill Reservoir, about a mile below the moor, and passes down through the Holme Valley to Huddersfield , where it flows into
99-514: The most powerful transmitters in the country with reception available as far north as the Borders, as far south as Birmingham, and to the east and west coasts. Emley Moor (55.44°, 15.53 km) and Moorside Edge (348.22°, 11.56 km) transmitters can be seen from the location. In the winter Holme Moss frequently gets a covering of snow and the road over the moor is often the first in the area to be blocked. Kirklees Highways department clears
110-479: The north, the climb is 7 km (4.3 mi) long, gaining 394 m (1,293 ft) in altitude, at an average gradient of 5.6%, although the penultimate kilometre is at a gradient of 11%. From the south, the climb starts at the junction with the A628, from where it is 4 km (2.5 mi) long, with a height gain of 274 m (899 ft) at an average gradient of 6.9%. Although not comparable in distance with
121-519: The road as far as the border with Derbyshire. Derbyshire County Council Highways Authority is responsible for clearing the southern side. Holmfirth Harriers Athletics Club organise an annual "Holme Moss Fell Race" on and around Holme Moss in the summer. The race starts at Cartworth Moor cricket ground, crosses Ramsden Clough to Holme Moss, crosses and descends to Crowden before returning via Bareholme Moss, Laddow Rocks and Black Hill. To British cycling enthusiasts, Holme Moss has become synonymous with
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