The bird’s foot delta got its name because it forms like a bird foot’s claw. The wider portion of the fan is facing the water. River deltas form when a river carrying sediment reaches either (1) a body of water, such as a lake, ocean, or reservoir, (2) another river that cannot remove the sediment quickly enough to stop delta formation, or (3) an inland region where the water spreads out and deposits sediments.The tidal currents also cannot be too strong, as sediment would wash out into the water body … Deltas form through a very simple process: fast-moving water can carry lots of sediment (sand, clay, … The Nile is considered to be an "arcuate" delta (arc-shaped), as it resembles a triangle or lotus flower when seen from above. This is because the sediment land mass developed at mouth of this river formed a triangular shape that looks like the upper case Greek letter delta. Beyond the expanse of the Nile Delta lies the Mediterranean and Europe. Unlike other landforms affected by water current, a delta is not mainly created because of erosion of land surface caused by the force of wind and water. Soaking up the influences of the bands who inspire them, The Nile Deltas have arrived at their own place - a very British rock band with an American flavour, think early Whitesnake with a feathering of The Black Crowes, Free with a faint aroma of Blackberry … into the Mediterranean Sea. Several hundred thousand water birds winter in the delta, including the world’s largest concentrations of little gulls and whiskered terns. The delta is sometimes divided into sections, with the Nile dividing into two main distributaries, the Damietta and the Rosetta, flowing into the Mediterranean at port cities with the same name. It is the delta formed in Northern Egypt (Lower Egypt) where the Nile River spreads out and drains into the Mediterranean Sea and it is one of the world's largest river deltas. These sediments pile up into several layers called beds. The cuspate deltas are formed where sediments are deposited onto a straight shoreline with strong waves. Most of Egypt's habitable land is within the Nile Delta and along the Nile River. Furthermore, Egypt’s Mediterranean coastline is being swallowed up by the sea because of global warming and the rise of the sea level, and the lack sediments being deposited since the construction of the Aswan Dam, in some places as much as 100 yards a year. The sediment is dropped at the mouth of the river. The river’s depth, width and velocity determine how much and how big the sediments it can carry. A fast and turbulent river transports larger sediments in size and amount. The Delta begins slightly down-river from Cairo. Such deltas usually form at places where a mountain river joins a freshwater lake. According to wikipedia, the Arabic name of the Nile delta is also delta (or dalta), which may or may not mean that this name is fairly old. A typical example of a wave-dominated delta is the Nile Delta in Egypt. Alluvial fans are also composed of fan –shaped layers of sediments. These distributaries appear like a maze of water channels. The Nile is formed by three principal streams: the Blue Nile (Arabic: Al-Baḥr Al-Azraq; Amharic: Abay) and the Atbara (Arabic: Nahr ʿAṭbarah), which flow from the highlands of Ethiopia, and the White Nile (Arabic: Al-Baḥr Al-Abyad), the headstreams of which flow into Lakes Victoria and Albert.. Herodotus, a Greek historian, first used the term "delta" for the Nile River in Egypt. Deltas form when silt and sediments accumulate at the mouths of large rivers. In addition, the location of the Delta along the Mediterranean and at the entry point into the Levant made it an important area for trade and international contacts. It’s a curved or bowed delta with the convex margin facing the sea. The Nile Delta Deltas are formed in the following way: 1. The Nile Delta is an example of an arcuate delta while the Mississippi Delta is classified as a bird’s foot delta. A delta can only form when river channels carry sediments into another body of water. The formation of a river delta is a slow process. Relatively coarse sediments are formed in this type of delta. Rivers typically contain their highest sediment loads near their mouth, where they meet seas and oceans. It is one of the world's largest river deltas—from Alexandria in the west to Port Said in the east, it covers 240 km of Mediterranean coastline and is a rich agricultural region. With cooler temperatures and some rain, the Nile Delta region becomes quite humid during the winter months. Copyright 2021 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. Nile Delta The Nile Delta is the delta formed in Lower Egypt where the Nile River spreads out and drains into the Mediterranean Sea. As rivers flow toward their outlets from higher elevations, they deposit mud, silt, sand, and gravel particles at the mouths where rivers and larger, more sedentary bodies of water meet. This kind of delta is a lot more solid and mimics the shape of a triangle. Two large distributaries built major lobes, wave action in the Mediterranean redistributes sediment at the front of the delta, this sediment forms a series of curved barrier bars which form closed off segments of the Mediterranean sea, these segments are called lagoons The Nile's deep, navigable waters flow northward into Lower Egypt, where at Cairo the Nile becomes a wide, marshy delta. The Mississippi Delta is the largest river delta in North America, covering an estimated area of from 10,000 to 13,000 square miles of land according to various sources. The Huang He, or Yellow River, in China deposits the greatest load of sediment annually into its delta. Information and translations of nile delta in the most comprehensive dictionary definitions resource on the web. The terms however are not interchangeable as delta is mainly formed beside a river or a body of water while alluvial fan formation happens on dry land. The delta becomes a main channel that divides substantial land masses into various streams called distributaries. The banks of the Nile all along its vast length contain rich soil as well, thanks to annual flooding that deposits silt. The arcuate are the fan-shaped deltas. To geologist, "delta" is the name given a body of sediment deposited at the mouth of a river where it flows into a standing body of water. The Nile Delta The Delta is formed by the division of the branches of the River Nile as it flows south through the Valley formed by the Nile in Upper Egypt. The elevation of the delta ranges from about 18 m (60 ft) above mean sea level at Cairo to around 1 m (3.3 ft) thick or … It is common knowledge that the Nile delta looks roughly triangular in form, hence roughly like a greek capital delta (especially when on a map oriented with the south on top). Extensive view of fields and water canals giving a mosaic effect LOC matpc.15921.jpg 5,133 × 3,586; 2.47 MB Some deltas are so large that people can live on them. The Nile Delta. On the western riverbank, these necropoli (cities of the dead) were built on a gravelly desert plateau formed of limestone and clay overlooking the river. have plants that grow in abundance. Arcuate or fan-shaped delta; Arcuate is the most common type of delta. The sediment deposited by this running water is called Alluvium. The river branches spread out in a V-shaped fan and make their way towards the Mediterranean through Lower Egypt. It is one of the world's largest river deltas—from Alexandria in the west to Port Said in the east, it covers 240 km of Mediterranean coastline—and is a rich agricultural region. A 30-centimeter rise in sea level is expected to occur by 2025, flooding approximately 200 square kilometers (77 sq mi). Other birds making their homes in the delta include grey herons, Kentish Plovers, shovelers, cormorants, egrets and ibises. delta [from triangular shape of the Nile delta, like the Greek letter delta], a deposit of clay, silt, and sand formed at the mouth of a river where the stream loses velocity and drops part of its sediment load.No delta is formed if the coast is sinking or if there is an ocean or tidal current strong enough to prevent sediment deposition. Other animals found in the delta include frogs, turtles, tortoises, mongooses, and the Nile monitor. With a rich and diverse cultural history, the Nile Delta is one of northern Africa's most fertile regions -- people have farmed it for thousands of years. Some rivers drop so much sediment that waves and tides can't carry it all away. Several scarps (cliffs) are visible at image lower left. The … Deltas are mistaken for another classification of land form called alluvial fans. Fish found in the delta include the Striped mullet and soles. Heavy spring floodwaters from throughout central Egypt inundate the river with sediment every year, and over millennia these sediments were deposited along the river banks to create the fertile river valley. In the Nile Delta for example, the Egyptians constructed their towns and cemeteries on turtlebacks; natural highpoints in the landscape that became islands during the inundation. Environmental damage to the Nile Delta is not yet one of Egypt's priorities, but experts say if the situation continues to deteriorate, it will trigger massive food shortages which could turn seven million people into "climate refugees. This is because the sediment land mass developed at mouth of this river formed a triangular shape that looks like the upper case Greek letter delta. What does nile delta mean? As the river channel flows over the ground and makes contact with soil, it carries with it sediments like gravel, sand, silt and clay. 3 Main Types of Delta. At its farthest reaches, Alexander the Great built Alexandria, a bustling port city and home to the Library of Alexandria and the famed Pharos Lighthouse, one of the Seven Wonders of the Ancient World. About half of this area includes wetlands formed within the delta. Herodotus, a Greek historian, first used the term "delta" for the Nile River in Egypt. It is one of the world's largest river deltas—from Alexandria in the west to Port Said in the east, it covers 240 km of Mediterranean coastline—and is a rich agricultural region. The Nile Delta is turning into a salty wasteland by rising sea waters, forcing some farmers off their lands and others to import sand in a desperate bid to turn back the tide. To the north-west are three other coastal lakes or lagoons: Lake Burullus, Lake Idku and Lake Maryut. It builds up in layers forming a delta. It spreads out because it is slowing down and doesn't dig so deep into the earth. A Gilbert delta is formed when the sediments deposited to form the delta are coarse in nature. As it loses energy, it can no longer carry the sediment in the river and the sediment is deposited, forming a sandy, silty area known as a delta. The Delta has a hot desert climate as the rest of Egypt, but its northernmost part, as is the case with the rest of the northern coast of Egypt which is the wettest region in the country, has relatively moderate temperatures, with highs usually not surpassing 31 °C (88 °F) in the summer. A delta is a land form comprised of sediments found at the mouth of the river. The Nile Deltas are a rock 'n' roll band on their own terms, an unashamed 'song' band with a voice up front drenched in soul. Science Fair Project Ideas for Kids, Middle & High School Students. Prior to the building of the Aswan High Dam in the 1960s, more than 120 million tonnes of silt washed down the Nile each year and accumulated in its delta. The delta is made up mainly of alternating layers of silt and sand, laid down by the Nile over the past 10 thousand years or so. This shape is created when the waves are weak and the river flow is stronger. The lagoon is partly enclosed by two long narrow barrier spits that are surmounted by beach ridges and crossed by tidal entrances of variable position and size. Topsoil in the delta can be as much as 70 feet (21 m) in depth. The delta experiences its hottest temperatures in July and August, with maximum average of 34 °C (93 °F). The load weighs around 1.6 billion tons. Estuarine Delta: The deltas formed due to filling of estuaries of rivers are called estuarine … Nile crocodiles and hippopotamus, two animals which were widespread in the delta during antiquity, are no longer found there. From north-to-south, the delta is approximately 160 km in length. When a river channel encounters another body of water, it loses it speed and deposits such sediments onto a flat area. Only 100 to 200 mm of rain falls on the delta area during an average year, and most of this falls in the winter months. The outer edges of the delta are eroding, and some coastal lagoons have seen increasing salinity levels as their connection to the Mediterranean Sea increases. The Tiber Delta found in Italy is an example of a cuspate delta. Basin modeling in the eastern part of the Nile Delta … This cycle continues producing beds with alternating layers of fine and course sediments. Flight down the delta of the Nile to Alexandria. The Nile Delta is the delta formed in Northern Egypt (Lower Egypt) where the Nile River spreads out and drains. A new study finds evidence for a theory that suggests the Nile River may have emerged around 30 million years ago, driven by the motion of Earth’s mantle. Since the delta no longer receives an annual supply of nutrients and sediments from upstream due to the construction of the Aswan High Dam, the soils of the floodplains have become poorer, and large amounts of fertilizers are now used. It slows down partially due to the water resistance of the Mediteterranean Sea. The Sand Hummocks is a shallow, largely infilled tidal embayment and lagoon formed by the sea flooding a gently sloping depression on the surface of the Werribee Plains. The battle between the river’s flow and the amount of sediments it carries, and the strength of the tidal waves of the body of water, determines the delta’s shape. My house during my life Wiki is a FANDOM Lifestyle Community. The name Nile is derived from the Greek Neilos (Latin: Nilus), which probably originated … The waves push the sediments to spread outwardly creating the tooth-like shape. The Suez Canal runs to the east of the delta, entering the coastal Lake Manzala in the north-east of the delta. Thus, this delta rarely occurs along ocean coasts because the waves are often stronger than the river current. Winter temperatures are normally in the range of 9 °C (48 °F) at nights to 19 °C (66 °F) at days. The Nile Delta is the delta formed in Northern Egypt (Lower Egypt) where the Nile River spreads out and drains into the Mediterranean Sea. During autumn, parts of the Nile River are red with lotus flowers. The Nile Delta at night as seen from the International Space Station in October 2010. Experts warn that global warming will have a major impact in the delta on agriculture resources, tourism and human migration besides shaking the region's fragile ecosystems. When the river’s flow slows down, the size of the particles decreases because larger particles are deposited first. Take your favorite fandoms with you and never miss a beat. In most cases, alluvial fans occur at the canyon’s base and onto a flat area at the foot of mountain. The Upper Nile plant is the Egyptian lotus, and the Lower Nile plant is the Cyperus papyrus (papyrus sedge), although it is not nearly as plentiful as it once was, and is becoming quite rare. The soil of the Nile River delta between El Qâhira (Cairo) and the Mediterranean Sea is rich in nutrients, due to the large silt deposits the Nile leaves behind as it flows into the sea. One such defunct distributary is Wadi Tumilat. From north to south the delta is approximately 160 km in length. The Nile’s broad fan-shaped Delta is flat and green. Delta of the Nile. We know that the Nile delta gave its shape to the Greek letter Δ, but the Nile is not the only river in the world that has such an elegant delta. The ancient pharaohs (kings) and queens of Egypt established several royal cemeteries, along the Nile River valley. Meaning of nile delta. Author has 354 answers and 519K answer views It is formed by the Nile slowing down and spreading out right before it enters the Mediterranean Sea. From west-to-east, it covers some 240 km of coastline. Without this annual silt flow to replenish it, the Nile Delta is shrinking – in some places the coastline is receding by as much as 175 metres a year. As the polar ice caps melt, much of the northern delta, including the ancient port city of Alexandria, will disappear under the Mediterranean. The Nile Delta ( Arabic : دلتا النيل Delta n-Nīl or simply الدلتا ed-Delta ) is the delta formed in Northern Egypt (Lower Egypt) where the Nile River spreads out and drains into the Mediterranean Sea. Definition of nile delta in the Definitions.net dictionary. Other large rivers around the world such as Rhine, Danube, Tigris, Euphrates and Mekong have formed their own deltas that are fertile enough to grow agricultural vegetation. The Lower Nile (North) and the Upper Nile (South). https://myhouseduringmylife.fandom.com/wiki/Nile_delta?oldid=9572. The three main types of deltas are the arcuate, the bird's foot and the cuspate. Potential traps are predominantly formed in relation to these seals with deep-seated faults providing migration pathways. Air views of Palestine. The river activity is balanced with the wind. In the past, the delta had several distributaries, but these have been lost due to flood control, silting and changing relief. A delta can only form when river channels carry sediments into another body of water. The Nile Delta (Arabic: دلتا النيل ) is the delta formed in Northern Egypt (Lower Egypt) where the Nile River spreads out and drains into the Mediterranean Sea.It is one of the world's largest river deltas—from Alexandria in the west to Port Said in the east, it covers some 240 km of Mediterranean coastline—and is a rich agricultural region. • Volga Delta, Russia • Nile Delta, Egypt • Ganges Delta, India and Bangladesh.