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Flat Coast
At a flat coast or flat shoreline, the land descends gradually into the sea. Flat coasts can be formed either as a result of the sea advancing into gently-sloping terrain or through the abrasion of loose rock. They may be basically divided into two parallel strips: the shoreface and the beach. Flat coasts consist of loose material such as sand and gravel. Wind transports finer grains of sand inland over the dunes. The sea washes pebbles and sand away from the coast and dumps it at other locations. Flat coast littoral series The typical sequence of landforms created by the sea is described as a "littoral series". Sandbars, runnels and creeks The littoral series of a flat coast starts in the permanently flooded shallow water region, or shoreface, with a sand or gravel reef (also called a bar). The longshore bar is an elongated ridge of sand found parallel to the shore in the surf zone on many flat coasts. It consists mainly of sand or gravel, depending on the material avail ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flat Coast (shematic View)
At a flat coast or flat shoreline, the land descends gradually into the sea. Flat coasts can be formed either as a result of the sea advancing into gently-sloping terrain or through the abrasion of loose rock. They may be basically divided into two parallel strips: the shoreface and the beach. Flat coasts consist of loose material such as sand and gravel. Wind transports finer grains of sand inland over the dunes. The sea washes pebbles and sand away from the coast and dumps it at other locations. Flat coast littoral series The typical sequence of landforms created by the sea is described as a "littoral series". Sandbars, runnels and creeks The littoral series of a flat coast starts in the permanently flooded shallow water region, or shoreface, with a sand or gravel reef (also called a bar). The longshore bar is an elongated ridge of sand found parallel to the shore in the surf zone on many flat coasts. It consists mainly of sand or gravel, depending on the material ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tidal Flats
Mudflats or mud flats, also known as tidal flats or, in Ireland, slob or slobs, are coastal wetlands that form in intertidal areas where sediments have been deposited by tides or rivers. A global analysis published in 2019 suggested that tidal flat ecosystems are as extensive globally as mangroves, covering at least of the Earth's surface. / They are found in sheltered areas such as bays, bayous, lagoons, and estuaries; they are also seen in freshwater lakes and salty lakes (or inland seas) alike, wherein many rivers and creeks end. Mudflats may be viewed geologically as exposed layers of bay mud, resulting from deposition of estuarine silts, clays and aquatic animal detritus. Most of the sediment within a mudflat is within the intertidal zone, and thus the flat is submerged and exposed approximately twice daily. A recent global remote sensing analysis estimated that approximately 50% of the global extent of tidal flats occurs within eight countries (Indonesia, China, Austr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Noel2007 Erosion
Noel or Noël may refer to: Christmas * , French for Christmas * Noel is another name for a Christmas carol Places * Noel, Missouri, United States, a city *Noel, Nova Scotia, Canada, a community * 1563 Noël, an asteroid *Mount Noel, British Columbia, Canada People * Noel (given name) * Noel (surname) Arts, entertainment, and media Music *Noel, another term for a pastorale of a Christmas nature * ''Noël'' (Joan Baez album), 1966 * ''Noël'' (Josh Groban album), 2007 * ''Noel'' (Noel Pagan album), 1988 * ''Noël'' (The Priests album), 2010 * ''Noel'' (Phil Vassar album), 2011 * ''Noel'' (Josh Wilson album), 2012 *''Noel'', 2015 Christmas album by Detail *"The First Noel", a traditional English Christmas carol *Noël (singer) (active late 1970s), American disco singer *Noel (band), a South Korean group Television * ''Noel'' (TV series), a Philippine drama * "Noël" (''The West Wing''), a 2000 television episode Other uses in arts, entertainment, and media * ''Noel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beach Ridge
A beach ridge is a wave-swept or wave-deposited ridge running parallel to a shoreline. It is commonly composed of sand as well as sediment worked from underlying beach material. The movement of sediment by wave action is called '' littoral transport''. Movement of material parallel to the shoreline is called ''longshore transport''. Movement perpendicular to the shore is called ''on-offshore transport''. A beach ridge may be capped by, or associated with, sand dunes. The height of a beach ridge is affected by wave size and energy. A fall in water level (or an uplift of land) can isolate a beach ridge from the body of water that created it. Isolated beach ridges may be found along dry lakes in the western United States and inland of the Great Lakes of North America, where they formed at the end of the last ice age when lake levels were much higher due to glacial melting and obstructed outflow caused by glacial ice. Some isolated beach ridges are found in parts of Scandinavia, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swash
Swash, or forewash in geography, is a turbulence, turbulent layer of water that washes up on the beach after an incoming ocean surface wave, wave has broken. The swash action can move beach materials up and down the beach, which results in the cross-shore sediment exchange. The time-scale of swash motion varies from seconds to minutes depending on the type of beach (see Figure 1 for beach types). Greater swash generally occurs on flatter beaches. The swash motion plays the primary role in the formation of morphological features and their changes in the swash zone. The swash action also plays an important role as one of the instantaneous processes in wider coastal morphodynamics. There are two approaches that describe swash motions: (1) swash resulting from the collapse of high-frequency bores (''f''>0.05 Hz) on the beachface; and (2) swash characterised by standing, low-frequency (''f''20 indicate dissipative conditions where swash is characterised by standing long-wave m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Runnel
Runnel(s) may refer to: *Runnel Stone, a hazardous rock pinnacle near Gwennap Head, Cornwall, United Kingdom * Runnels, a surname *Runnels County, Texas Runnels County is a county located in the U.S. state of Texas. As of the 2020 census, its population was 9,900. Its county seat is Ballinger. The county was created in 1858 and later organized in 1880. It is named for Hiram G. Runnels, a T ..., United States *A small stream *A channel along the side of a bicycle stairway {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berm
A berm is a level space, shelf, or raised barrier (usually made of compacted soil) separating areas in a vertical way, especially partway up a long slope. It can serve as a terrace road, track, path, a fortification line, a border/ separation barrier for navigation, good drainage, industry, or other purposes. Etymology The word is one of Middle Dutch and came into usage in English via French. Military use History In medieval military engineering, a berm (or berme) was a level space between a parapet or defensive wall and an adjacent steep-walled ditch or moat. It was intended to reduce soil pressure on the walls of the excavated part to prevent its collapse. It also meant that debris dislodged from fortifications would not fall into (and fill) a ditch or moat A moat is a deep, broad ditch, either dry or filled with water, that is dug and surrounds a castle, fortification, building or town, historically to provide it with a preliminary line of defence. In some places ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Backshore
The backshore area of a beach extends from the limit of high water foam lines to dunes or extreme inland limit of the beach. It is only affected by waves during exceptional high tides or severe storms.Whittow, John (1984). ''Dictionary of Physical Geography''. London: Penguin, 1984, p. 47. . Sediments in this area are well-sorted and well-rounded. Its grain sizes are mainly coarse sand and medium sand, which are larger than that in littoral barrier dune. The sedimentary structures include parallel bedding and low-angle cross-bedding In geology, cross-bedding, also known as cross-stratification, is layering within a stratum and at an angle to the main bedding plane. The sedimentary structures which result are roughly horizontal units composed of inclined layers. The origina .... References {{geology-stub Coastal geography ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Supratidal Zone
The supralittoral zone, also known as the splash zone, spray zone or the supratidal zone, sometimes also referred to as the white zone, is the area above the spring high tide line, on coastlines and estuaries, that is regularly splashed, but not submerged by ocean water. Seawater penetrates these elevated areas only during storms with high tides.Thurman et al., p. 512. Organisms here must cope also with exposure to air, fresh water from rain, cold, heat and predation by land animals and seabirds. At the top of this area, patches of dark lichens can appear as crusts on rocks. Some types of periwinkles, Neritidae and detritus feeding Isopoda commonly inhabit the lower supralittoral.Yip and Madl See also *Littoral zone * Sublittoral zone Notes References * Thurman H.V. and Trujillo A.P. 1993.''Essentials of Oceanography''.Upper Saddle River, NJ:Prentice Hall * Yip, Maricela and Madl, Pierre (1999''Littoral''University of Salzburg The University of Salzburg (german: Universit� ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foreshore
The intertidal zone, also known as the foreshore, is the area above water level at low tide and underwater at high tide (in other words, the area within the tidal range). This area can include several types of habitats with various species of life, such as seastars, sea urchins, and many species of coral with regional differences in biodiversity. Sometimes it is referred to as the '' littoral zone'' or '' seashore'', although those can be defined as a wider region. The well-known area also includes steep rocky cliffs, sandy beaches, bogs or wetlands (e.g., vast mudflats). The area can be a narrow strip, as in Pacific islands that have only a narrow tidal range, or can include many meters of shoreline where shallow beach slopes interact with high tidal excursion. The peritidal zone is similar but somewhat wider, extending from above the highest tide level to below the lowest. Organisms in the intertidal zone are adapted to an environment of harsh extremes, living in wat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intertidal Zone
The intertidal zone, also known as the foreshore, is the area above water level at low tide and underwater at high tide (in other words, the area within the tidal range). This area can include several types of habitats with various species of life, such as seastars, sea urchins, and many species of coral with regional differences in biodiversity. Sometimes it is referred to as the ''littoral zone'' or '' seashore'', although those can be defined as a wider region. The well-known area also includes steep rocky cliffs, sandy beaches, bogs or wetlands (e.g., vast mudflats). The area can be a narrow strip, as in Pacific islands that have only a narrow tidal range, or can include many meters of shoreline where shallow beach slopes interact with high tidal excursion. The peritidal zone is similar but somewhat wider, extending from above the highest tide level to below the lowest. Organisms in the intertidal zone are adapted to an environment of harsh extremes, living in water p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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