|
Dry Valley
A dry valley may develop on many kinds of permeable rock, such as limestone, chalk, sand stone and sandy terrains that do not regularly sustain surface water flow. Such valleys do not hold surface water because it sinks into the permeable bedrock. There are many examples of chalk dry valleys along the North and South Downs in Southern England. Notably the National Trust-owned Devil's Dyke near Brighton covers some of downland scarp, and includes the deepest dry valley in the world – created when melting water eroded the chalk downland to the permafrost layer after the last ice age. The three-quarter mile long curved dry valley is around in height and attracts tourists with its views of Sussex, Hampshire and Kent. Other examples include the Alkham Valley near Dover, and the Hartley Bottom and Fawkham valleys near Dartford in north Kent. There are many examples of limestone dry valleys in the Peak District and the Yorkshire Wolds. A notable example is the valley of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dry Valley Near Rackham Hill - Geograph
Dry or dryness most often refers to: * Lack of rainfall, which may refer to ** Arid regions **Drought * Dry or dry area, relating to legal prohibition of selling, serving, or imbibing alcoholic beverages * Dry humor, deadpan * Dryness (medical) * Dryness (taste), the lack of sugar in a drink, especially an alcoholic one * Dry direct sound without reverberation In acoustics, reverberation (commonly shortened to reverb) is a persistence of sound after it is produced. It is often created when a sound is reflection (physics), reflected on surfaces, causing multiple reflections that build up and then de ... Dry or DRY may also refer to: Places * Dry Brook (other), various rivers * Dry Creek (other), various rivers and towns * Dry, Loiret, a commune of the Loiret ''département'' in France * Dry River (other), various rivers and towns Art, entertainment, and media Film and television * ''Dry'' (2014 film), a Nigerian film directed by Steph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alkham Valley
The Alkham Valley is in the Kent Downs (the eastern part of the North Downs), an Area of Outstanding Natural Beauty, in South East Kent, England. The valley lies between Folkestone and Dover. The Valley is a dry valley A dry valley may develop on many kinds of permeable rock, such as limestone, chalk, sand stone and sandy terrains that do not regularly sustain surface water flow. Such valleys do not hold surface water because it sinks into the permeable bed ..., typical of many others on the chalk downs. References External linksReference to the walks/rides available in the Valley* Dover District {{Kent-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Permafrost
Permafrost () is soil or underwater sediment which continuously remains below for two years or more; the oldest permafrost has been continuously frozen for around 700,000 years. Whilst the shallowest permafrost has a vertical extent of below a meter (3 ft), the deepest is greater than . Similarly, the area of individual permafrost zones may be limited to narrow mountain summits or extend across vast Arctic regions. The ground beneath glaciers and ice sheets is not usually defined as permafrost, so on land, permafrost is generally located beneath a so-called active layer of soil which freezes and thaws depending on the season. Around 15% of the Northern Hemisphere or 11% of the global surface is underlain by permafrost, covering a total area of around . This includes large areas of Alaska, Canada, Greenland, and Siberia. It is also located in high mountain regions, with the Tibetan Plateau being a prominent example. Only a minority of permafrost exists in the Southern Hemi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Periglacial
Periglaciation (adjective: "periglacial", referring to places at the edges of glacial areas) describes geomorphic processes that result from seasonal thawing and freezing, very often in areas of permafrost. The meltwater may refreeze in ice wedges and other structures. "Periglacial" originally suggested an environment located on the margin of past glaciers. However, freeze and thaw cycles influence landscapes also outside areas of past glaciation. Therefore, periglacial environments are anywhere when freezing and thawing modify the landscape in a significant manner. History Periglaciation became a distinct subject within the study of geology after Walery Łoziński, a Polish geologist, introduced the term in 1909. Łoziński drew upon the early work of Johan Gunnar Andersson. According to Alfred Jahn, his introduction of his work at the 1910 International Geological Congress held in Stockholm caused significant discussion. In the field trip to Svalbard that followed the congres ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Table
The water table is the upper surface of the phreatic zone or zone of saturation. The zone of saturation is where the pores and fractures of the ground are saturated with groundwater, which may be fresh, saline, or brackish, depending on the locality. It can also be simply explained as the depth below which the ground is saturated. The portion above the water table is the vadose zone. It may be visualized as the "surface" of the subsurface materials that are saturated with groundwater in a given vicinity. In coarse soils, the water table settles at the surface where the water Hydraulic head, pressure head is equal to the atmospheric pressure (where gauge pressure = 0). In soils where capillary action is strong, the water table is pulled upward, forming a capillary fringe. The groundwater may be from precipitation or from more distant groundwater flowing into the aquifer. In areas with sufficient precipitation, water infiltrates through pore spaces in the soil, passing through t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wetton, Staffordshire
Wetton is a village in the Staffordshire Moorlands in Staffordshire, England. It is in the Peak District and at the top of the east side of the Manifold Valley. The population recorded in the United Kingdom Census 2001, 2001 Census was 157. At the time of the 2011 Census the population was recorded under Ilam, Staffordshire, Ilam. This article describes the location, some of the main features of the village, and a number of places of historical or general interest in or near the village. These include Long Low, Wetton, a prehistoric burial site unique to England. Because the post town is Ashbourne, Derbyshire, many sources of tourist information wrongly describe Wetton as being in Derbyshire. Location Wetton is a small village in the Staffordshire Peak District. It is about 2 miles west of Alstonfield and 8½ miles east of Leek, Staffordshire, Leek. It stands high above the Manifold valley and contains mostly stone-built properties. The village has an inn, and a church, part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Manifold
The River Manifold is a river in Staffordshire, England. It is a tributary of the River Dove (which also flows through the Peak District, forming the boundary between Derbyshire and Staffordshire). The Manifold rises at Flash Head just south of Buxton near Axe Edge, at the northern edge of the White Peak, known for its limestone beds. It continues for before it joins the Dove. For part of its course, it runs underground (except when in spate), from Wetton Mill to Ilam. During this section it is joined by its major tributary, the River Hamps. Villages on the river include Longnor, Hulme End and Ilam. Its name may come from Anglo-Saxon ''manig-fald'' = "many folds", referring to its meanders. Manifold Way The Manifold Way is an long-distance footpath and cycle track from Hulme End to Waterhouses, along the former route of the narrow-gauge (2' 6") Leek and Manifold Valley Light Railway which operated between 1904 and 1934. Opened in July 1937 after the LMS hande ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yorkshire Wolds
The Yorkshire Wolds are hills in the counties of the East Riding of Yorkshire and North Yorkshire in Northern England. They are the northernmost chalk hills in the UK and within lies the northernmost chalk stream in Europe, the Gypsey Race. On the western edge, the Wolds rise to an escarpment which then drops sharply to the Vale of York. The highest point on the escarpment is Bishop Wilton Wold (also known as Garrowby Hill), which is above sea level. To the north, on the other side of the Vale of Pickering, lie the North York Moors, and to the east the hills flatten into the plain of Holderness. The hills are separated by many dry dales, formed during the last ice age and where many springs rise. The largest town in the Wolds is Driffield, with other places including Pocklington, Thixendale and Kilham, the original 'capital' of the Wolds. The highest village on the Yorkshire Wolds is Fridaythorpe at above sea level. The market town of Beverley lies on the eastern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peak District
The Peak District is an Highland, upland area in central-northern England, at the southern end of the Pennines. Mostly in Derbyshire, it extends into Cheshire, Greater Manchester, Staffordshire, West Yorkshire and South Yorkshire. It is subdivided into the Dark Peak, moorland dominated by gritstone, and the White Peak, a limestone area with valleys and gorges. The Dark Peak forms an arc on the north, east and west of the district, and the White Peak covers central and southern areas. The highest point is Kinder Scout (). Most of the area is within the Peak District National Park, a protected landscape designated in 1951. A 2021 report states that "the Park's own population numbers around 40,000 and supports an estimated 18,000 jobs, predominantly through farming, manufacturing and, inevitably, tourism". The area has been inhabited since the Mesolithic era; it was largely used for agricultural purposes until mining arose in the Middle Ages. During the Industrial Revolution, seve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dartford
Dartford is the principal town in the Borough of Dartford, Kent, England. It is located south-east of Central London and is situated adjacent to the London Borough of Bexley to its west. To its north, across the Thames Estuary, is Thurrock in Essex, which can be reached via the Dartford Crossing. To its east lies the Borough of Gravesham and to the south the district of Sevenoaks. It had a population of 51,240. The town centre lies in a valley through which the River Darent flows and where the old road from London to Dover crossed: hence the name, which derives from ''Darent + Ford (crossing), ford''. Dartford became a market town in medieval times and, although today it is principally a commuter town for Greater London, it has a long history of religious, industrial and cultural importance. It is an important rail hub; the main through-road now by-passes the town itself. Geography Dartford lies within the area known as the London Basin. The low-lying marsh to the north of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dover
Dover ( ) is a town and major ferry port in Kent, southeast England. It faces France across the Strait of Dover, the narrowest part of the English Channel at from Cap Gris Nez in France. It lies southeast of Canterbury and east of Maidstone. The town is the administrative centre of the Dover District and home of the Port of Dover. Archaeological finds have revealed that the area has always been a focus for peoples entering and leaving Great Britain, Britain. The name derives from the River Dour that flows through it. In recent times the town has undergone transformations with a high-speed rail link to London, new retail in town with St James' area opened in 2018, and a revamped promenade and beachfront. This followed in 2019, with a new 500m Pier to the west of the Harbour, and new Marina unveiled as part of a £330m investment in the area. It has also been a point of destination for many English Channel migrant crossings (2018-present), illegal migrant crossings. The Port ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ice Age
An ice age is a long period of reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Earth's climate alternates between ice ages, and greenhouse periods during which there are no glaciers on the planet. Earth is currently in the ice age called Quaternary glaciation. Individual pulses of cold climate within an ice age are termed '' glacial periods'' (''glacials, glaciations, glacial stages, stadials, stades'', or colloquially, ''ice ages''), and intermittent warm periods within an ice age are called '' interglacials'' or ''interstadials''. In glaciology, the term ''ice age'' is defined by the presence of extensive ice sheets in the northern and southern hemispheres. By this definition, the current Holocene epoch is an interglacial period of an ice age. The accumulation of anthropogenic greenhouse gases is projected to delay the next glacial period. History of research ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
