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Glg 171 meander definition8/14/2023 ![]() Over time, the ends of the curve formed by the meander become very close together and the meander is cut off and abandoned (abandoned or cutoff meander). Meanders change position by eroding sideways and slightly downstream. In addition, it depends on other variables such as the lithology of the river margins, the discharge, whether there is a floodplain or not, etc. Meanders move over time through simultaneous processes of erosion and sedimentation. The development of meanders increases the length of the river and thus decreases its slope. They form more easily in floodplains with a low gradient. How are meanders formed?Ī meander is formed when the water flow velocity diminishes in the river, thus forming curves or meanders. When they are above the water level, they can be recognised forming ridges. ![]() As sediments deposit in the inside of a meander, point bars become larger, composed of sediment that is well sorted. Point bars are crescent-shaped deposits of sand and gravel that accumulate on the inside of a river bend. A meander forms as a watercourse erodes the sediments of an outer, concave bank and deposits sediments on an inner, convex bank (point bar), leading to a meandering channel. The painter Yang Liu, for example, has incorporated smooth versions of the traditional Greek Key (also called Sona drawing, Sand drawing, and Kolam) in many of her paintings.Meanders are curves in the middle-lower course of a river. Meanders and their generalizations are used with increasing frequency in various domains of contemporary art. A meander motif also appears in prehistoric Mayan design motifs in the western hemisphere, centuries before any European contacts. 202 BC) by way of trade with the Greco-Bactrian Kingdom. 1000 BC -600 BC), frequently there is speculation that meanders of Greek origin may have come to China during the time of the Han Dynasty (c. Although space-filling curves have a long history in China in motifs more than 2,000 years earlier, extending back to Zhukaigou Culture (c. 1045 BC), and many traditional buildings in and around China still bear geometric designs almost identical to meanders. The meander is a fundamental design motif in regions far from a Hellenic orbit: labyrinthine meanders ("thunder" pattern ) appear in bands and as infill on Shang bronzes (c. The design is common to the present-day in classicizing architecture, and is adopted frequently as a decorative motif for borders for many modern printed materials. In ancient Greece they appear in many architectural friezes, and in bands on the pottery of ancient Greece from the Geometric Period onward. Meanders are common decorative elements in Greek and Roman art. On another hand, as Karl Kerenyi pointed out, "the meander is the figure of a labyrinth in linear form". On one hand, the name "meander" recalls the twisting and turning path of the Maeander River in Asia Minor (present day Turkey) that is typical of river pathways. ![]() Usually the term is used for motifs with straight lines and right angles and the many versions with rounded shapes are called running scrolls or, following the etymological origin of the term, may be identified as water wave motifs. ![]() Such a design also may be called the Greek fret or Greek key design, although these terms are modern designations even though the decorative motif appears thousands of years before that culture, thousands of miles away from Greece, and among cultures that are continents away from it. Among some Italians, these patterns are known as "Greek Lines". Meander motif in the streets of Rhodes (Greece), in pavement made from beach stonesĪ meander or meandros ( Greek: Μαίανδρος) is a decorative border constructed from a continuous line, shaped into a repeated motif. ![]()
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