This type of river delta, usually have one distributary emptying into a flat coastline with wave action hitting it head-on. Hence it is named cuspate. The Tiber Delta stretches over some 25 km and includes a delta plain region and a submerged fan.
This Delta plain, located some 25 km west of Rome, is an area of great interest that enables the study of the relationships between natural environmental changes and human activity.
Narmada : The west flowing river of India, Narmada passes through a rift valley. The River contains a small amount of silt and due to its sustained speed throughout its course, forms an estuary. The river empties into a long, narrow estuary that eventually becomes filled with sediment inside the coastline. Estuaries form a transition zone between river environments and ocean environments and are subject to both marine influences, such as tides, waves, and the influx of saline water; and riverine influences, such as flows of fresh water and sediment.
The inflow of both seawater and freshwater provide high levels of nutrients in both the water column and sediment, making estuaries among the most productive natural habitats in the world. Seine : This river is the third-longest river in France, which emerges from the earth in a remote spot called Source-Seine, in the Burgundy wine region of northeastern France and forms a stark estuarine river delta that drains into the English Channel.
Saltwater and freshwater species make up the Nile Delta's aquatic fauna. The delta's limited mammal fauna includes the red fox and Egyptian mongoose. The hippopotamus became extinct in the region during the last years. You'll also find one of the planet's most important bird migration routes in the Nile Delta.
Millions of birds traveling between Africa and Europe pass through the delta region. In addition to providing flood control, it helps reduce drought and generate hydroelectric power. Unfortunately, the dam restricts the spread of fertile sediments that occur annually through floods.
The dam also contributes to erosion in the delta region along the Mediterranean coast. Scientists have suggested that higher sea levels and extreme weather could impact the Nile's delta negatively as global temperatures climb.
Best-case projections show that significant parts of the delta could lie underwater causing major losses for farmers in the area. After majoring in physics, Kevin Lee began writing professionally in when, as a software developer, he also created technical articles for the Johnson Space Center. Today this urban Texas cowboy continues to crank out high-quality software as well as non-technical articles covering a multitude of diverse topics ranging from gaming to current affairs.
Another untraditional looking delta is the inverted delta. The distributary network of an inverted delta is inland, while a single stream reaches the ocean or other body of water. Inland deltas, which empty into a plain, are extremely rare. The Okavango delta in Botswana is probably the most well-known—and so unusual it is recognized as one of the "Seven Natural Wonders of Africa.
The delta spreads water and silt across a flat plain in the Kalahari Desert before being evaporated. An abandoned delta forms as a river develops a new channel, leaving the other to dry up or stagnate. This process is called avulsion. Avulsion occurs when the slope of a channel decreases and the sediment build-up increases. These forces allow the channel to overflow its banks or levees and find a steeper, more direct route to the ocean or other body of water.
The process of avulsion in deltaic lobes is called delta lobe switching. Over time, delta switching can create entirely new deltaic lobes. Delta switching has resulted in seven or eight distinct deltaic lobes of the Mississippi River over, at least, the past 5, years. Deltas are incredibly important to the human geography of a region. They are important places for trade and commerce , for instance. The Fraser delta helps make Vancouver one of the busiest, most cosmopolitan ports in the world, where goods from the interior of Canada are exported, and goods from around the world are imported.
The Pearl River Delta, sometimes called the Delta of Guangdong, is another heavily urbanized river delta. The Pearl River delta is one of the fastest-growing centers of China's economy. The Pearl River delta includes both of China's two special administrative regions, the former British colony of Hong Kong and the former Portuguese colony of Macau. Hong Kong and Macau are welcoming to western business, and provide an entryway to the Chinese market.
The Pearl River delta region is growing so quickly, it frequently experiences labor shortages as immigrants from the Chinese interior settle in the area, seeking a better life and higher wages. Deltas have a rich accumulation of silt, so they are usually fertile agricultural areas.
The world's largest delta is the Ganges—Brahmaputra delta in India and Bangladesh, which empties into the Bay of Bengal. Bangladesh sits almost entirely on this delta.
Fish, other seafood, and crops such as rice and tea are the leading agricultural products of the delta. Similarly, the inverted delta of the Sacramento and San Joaquin Rivers in northern California is one of the most agriculturally rich areas in the U. The soil supports crops from asparagus to zucchini, wine grapes to rice.
Extensive river management threatens deltas. River management involves monitoring and administering a river's flow often through the use of dams. River management increases the amount of land available for agricultural or industrial development , and controls access to water for drinking, industry , and irrigation. Engineers and government officials must consistently debate the interests of agriculture , industry, the environment , and citizen safety and health when putting delta wetlands at risk.
River management in Egypt has radically altered the way land is farmed around the Nile delta, for instance. Construction of the Aswan Dam in the s reduced annual flooding of the delta. This flooding had distributed silt and nutrients along the banks of the Nile.
Today, Egypt is much more reliant on fertilizers and irrigation. The Nile delta is also shrinking as a result of the Aswan Dam and other river management techniques. Without silt and other sediments to fortify it in a prodelta, the waves of the Mediterranean Sea are eroding the delta faster than the Nile can replace it. The ecosystem what was once the world's largest desert estuary has been reduced to a fraction of its former area, and many indigenous species are vulnerable, threatened, or endangered.
Finally, decades of river management prevent the Mississippi River from naturally flowing through its delta wetlands. Like the Nile delta, the Mississippi delta is also eroding.
This situation contributed to the devastation caused by Hurricane Katrina in Delta Blues Delta blues is a style of music developed by African-American artists living and performing in the Mississippi Delta region of the southern United States. The Mississippi Delta is actually a flood plain between two rivers in northwestern Mississippi, the Mississippi and the Yazoo, it is sometimes to as the Yazoo-Mississippi Delta.
Slide guitar is one of the standard instruments used by delta blues musicians, while familiar topics include poverty and injustice.
Robert Johnson, widely recognized as one of the greatest guitarists of all time, played the Delta blues. Listen to Robert Johnson here.
Also called an alpha predator or top predator. Also called a birdfoot delta or bird's-foot delta. Usually rivers enter another body of water at their mouths.
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