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River Mole, Surrey
The River Mole is a tributary of the River Thames in southern England. It source (river), rises in West Sussex near Gatwick Airport and flows north-west through Surrey for to the River Thames, Thames at Hampton Court Palace. The river gives its name to the Surrey district of Mole Valley. The Mole crosses the North Downs between Dorking and Leatherhead, where it cuts a steep-sided valley, known as the Mole Gap, through the chalk. Much of the catchment area lies on permeability (earth sciences), impermeable rock (including Weald Clay and London Clay), meaning that the river level responds rapidly to heavy rainfall. During the second half of the 20th century, pollution levels in the river were high; however, since 1995 the water quality#Environmental water quality, water quality has improved dramatically and the Mole now boasts the greatest diversity of fish species of any river in England. Twelve Sites of Special Scientific Interest, Sites of Special Scientific Interest (SSSIs) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Box Hill, Surrey
Box Hill is a summit of the North Downs in Surrey, approximately south-west of London. It is named after the ancient Buxus sempervirens, box woodland found on the steepest west-facing chalk slopes overlooking the River Mole. The western part of the hill is owned and managed by the National Trust for Places of Historic Interest or Natural Beauty, National Trust, whilst the village of Box Hill lies on higher ground to the east. The highest point is Betchworth Clump at Ordnance Datum, above OD, although the Salomons Memorial (at 172 metres) overlooking the town of Dorking is the most popular viewpoint. Box Hill is part of the Surrey Hills National Landscape and forms part of the Mole Gap to Reigate Escarpment Site of Special Scientific Interest. The north- and south-facing slopes support an area of chalk downland, noted for its orchids and other rare plant species. The hill provides a habitat for 38 species of butterfly, and has given its name to a species of Coreidae, squash bu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rusper
Rusper is a village and civil parish in the Horsham District of West Sussex, England. It lies north of the town of Horsham and west of Crawley. Rusper is the centre of Rusper Parish which covers most of the northern area between Horsham and Crawley. Rusper is governed by the Horsham District Council based in Horsham. The parish population at the 2001 census was 1,389 people. It has a range of local services (mainly located on the High Street) such as a village shop and post office, a residential care home, a park, a church, a recreational sports area consisting of a Football pitch and two Tennis courts (one with basketball hoops), a hotel, two pubs ''The Plough'' and ''The Star'', a village hall, and Rusper Primary School, built in 1872. Rusper is close to London Gatwick Airport, which is only five miles away and lies under the flight path. It is on the watershed between the River Arun to the west and the River Mole to the east, with predominantly weald clay soils. Rusper Pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Quality
Water quality refers to the chemical, physical, and biological characteristics of water based on the standards of its usage. It is most frequently used by reference to a set of standards against which compliance, generally achieved through treatment of the water, can be assessed. The most common standards used to monitor and assess water quality convey the health of ecosystems, safety of human contact, extent of water pollution and condition of drinking water. Water quality has a significant impact on water supply and often determines supply options. Impacts on public health Over time, there has been increasing recognition of the importance of drinking water quality and its impact on public health. This has led to increasing protection and management of water quality. Text was copied from this source, which is available under a creativecommons:by/4.0/, Creative Commons Attribution 4.0 International License The understanding of the links between water quality and healt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pollution
Pollution is the introduction of contaminants into the natural environment that cause harm. Pollution can take the form of any substance (solid, liquid, or gas) or energy (such as radioactivity, heat, sound, or light). Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants. Although environmental pollution can be caused by natural events, the word pollution generally implies that the contaminants Human impact on the environment, have a human source, such as manufacturing, Extractivism, extractive industries, poor waste management, transportation or Agricultural pollution, agriculture. Pollution is often classed as point source pollution, point source (coming from a highly concentrated specific site, such as a factory, Environmental effects of mining, mine, construction site), or nonpoint source pollution (coming from a widespread distributed sources, such as microplastics or agricultural runoff). Many sources of po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
London Clay
The London Clay Formation is a Sediment#Shores and shallow seas, marine formation (geology), geological formation of Ypresian (early Eocene Epoch, c. 54-50 million years ago) age which outcrop, crops out in the southeast of England. The London Clay is well known for its fossil content. The fossils from the lower Eocene rocks indicate a moderately warm climate, the tropical or subtropical flora. Though sea levels changed during the deposition of the clay, the habitat was generally a lush forest – perhaps like in Indonesia or East Africa today – bordering a warm, shallow ocean. The London Clay is a stiff bluish clay which becomes brown when weathered and oxidized. Nodular lumps of pyrite are frequently found in the clay layers. Pyrite was produced by microbial activity (sulfate reducing bacteria) during clay sedimentation. Once clay is exposed to atmospheric oxygen, framboidal pyrite with a great specific surface is rapidly oxidized. Acid mine drainage, Pyrite oxidation produce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weald Clay
Weald Clay or the Weald Clay Formation is a Lower Cretaceous sedimentary rock unit underlying areas of South East England, between the North and South Downs, in an area called the Weald Basin. It is the uppermost unit of the Wealden Group of rocks within the Weald Basin, and the upper portion of the unit is equivalent in age to the exposed portion of the Wessex Formation on the Isle of Wight. It predominantly consists of thinly bedded mudstone. The un-weathered form is blue/grey, and the yellow/orange is the weathered form, it is used in brickmaking. The formation was deposited in lagoonal, lacustrine and alluvial conditions that varied from freshwater to brackish. The climate at the time of deposition is thought to have been semi-arid, and prone to fire. The clay alternates with other subordinate lithologies, notably hard red-weathering beds of ironstone, limestone ( Sussex Marble) and sandstones, notably including the calcareous sandstone unit referred to as the Horsha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Permeability (earth Sciences)
In fluid mechanics, materials science and Earth sciences, the permeability of porous media (often, a rock or soil) is a measure of the ability for fluids (gas or liquid) to flow through the media; it is commonly symbolized as ''k''. Fluids can more easily flow through a material with high permeability than one with low permeability. The permeability of a medium is related to the '' porosity'', but also to the shapes of the pores in the medium and their level of connectedness. Fluid flows can also be influenced in different lithological settings by brittle deformation of rocks in fault zones; the mechanisms by which this occurs are the subject of fault zone hydrogeology. Permeability is also affected by the pressure inside a material. The SI unit for permeability is the square metre (m2). A practical unit for permeability is the '' darcy'' (d), or more commonly the ''millidarcy'' (md) The name honors the French Engineer Henry Darcy who first described the flow of wat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Downs
The North Downs are a ridge of chalk hills in south east England that stretch from Farnham in Surrey to the White Cliffs of Dover in Kent. Much of the North Downs comprises two Area of Outstanding Natural Beauty, Areas of Outstanding Natural Beauty (AONBs): the Surrey Hills AONB, Surrey Hills and the Kent Downs AONB, Kent Downs. The North Downs Way National Trail runs along the North Downs from Farnham to Dover. The highest point in the North Downs is Botley Hill, Surrey ( above sea level). The ''County Top'' of Kent is Betsom's Hill ( above sea level), which is less than 1 km from Westerham Heights, Bromley, the highest point in Greater London at an elevation of . Etymology 'Downs' is from Old English ''dun'', meaning, amongst other things, "hill". The word acquired the sense of "elevated rolling grassland" around the 14th century. The name contains "North" to distinguish them from a similar range of hills – the South Downs – which runs roughly parallel to them but s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hampton Court Palace
Hampton Court Palace is a Listed building, Grade I listed royal palace in the London Borough of Richmond upon Thames, southwest and upstream of central London on the River Thames. Opened to the public, the palace is managed by Historic Royal Palaces, a charity set up to preserve several unoccupied royal properties. The building of the palace began in 1514 for Cardinal Thomas Wolsey, Archbishop of York and the chief minister of Henry VIII. In 1529, as Wolsey fell from favour, the cardinal gave the palace to the king to try to save his own life, which he knew was now in grave danger due to Henry VIII's deepening frustration and anger. The palace went on to become one of Henry's most favoured residences; soon after acquiring the property, he arranged for it to be enlarged so it could accommodate his sizeable retinue of Courtier, courtiers. In the early 1690s, William III of England, William III's massive rebuilding and expansion work, which was intended to rival the Palace of V ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Source (river)
The headwater of a river or stream is the geographical point of its beginning, specifically where surface runoff water begins to accumulate into a flowing channel of water. A river or stream into which one or many tributary rivers or streams flows has many headwaters, these being all of the individual headwaters of its tributaries. Each headwater is one of the river or stream's sources, as it is the place where surface runoffs from rainwater, meltwater, or spring water begin accumulating into a more substantial and consistent flow that becomes a Strahler number, first-order tributary of that river or stream. The tributary with the longest channel (geography), channel of all the tributaries to a river or stream, such length measured from that tributary's headwater to its mouth where it discharges into the river or stream, is the main stem of the river or stream in question. Definition The United States Geological Survey (USGS) states that a river's "length may be considered to be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern England
Southern England, also known as the South of England or the South, is a sub-national part of England. Officially, it is made up of the southern, south-western and part of the eastern parts of England, consisting of the statistical regions of London, the South East, the South West and the East. The region also shares a border with Wales to the far North West. Altogether, it forms a population of nearly 28 million and an area of . Southern England has cultural, economic and political differences from both the Midlands (which borders it to its north) and the North of England; the Midlands form a dialect chain in a notable north–south divide of England. The South is generally considered wealthier and more politically influential than the North. Within the South itself, multiple influences shape geographic and political divisions, defined by closeness to the capital; Greater London itself, its surrounding Home Counties and outer areas, as well as East Anglia and the Wes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tributary
A tributary, or an ''affluent'', is a stream or river that flows into a larger stream (''main stem'' or ''"parent"''), river, or a lake. A tributary does not flow directly into a sea or ocean. Tributaries, and the main stem river into which they flow, drain the surrounding drainage basin of its surface water and groundwater, leading the water out into an ocean, another river, or into an endorheic basin. The Irtysh is a chief tributary of the Ob (river), Ob river and is also the longest tributary river in the world with a length of . The Madeira River is the largest tributary river by volume in the world with an average discharge of . A confluence, where two or more bodies of water meet, usually refers to the joining of tributaries. The opposite to a tributary is a distributary, a river or stream that branches off from and flows away from the main stream. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
