The Characteristics and Formation of Meanders

Meanders are sinuous condescends in a vast stream's intermediate and inferior courses. In low glide conditions, alternating pools and riffles are formed concurrently the vast stream bed. The vast stream agent is lower in pools so it has important earnestness and past erosive force. Earnestness is past as the vast stream glides balance a riffle owing of rubbing. These motive the vast stream's glide to behove uncertain and zenith glide to be collected on one aspect of the vast stream, causing secondary erosion on one aspect, creating an outedge scooped bank. Deposition takes locate on the other aspect of the condescend, creating a embossed bank. The cross-section of a wind is asymmetrical. The outedge bank forms a vast stream crag or a hectoring delay a low pool halt to the bank, principally owing of the dissipated glide, hydraulic resuscitation and peeling. The vital bank is a gently sloping ease of sand and gravel, determined a purpose bar. Meanders are deeptained by a manner glide of soak athwart to the scooped outedge bank delay a balancing submanner repay glide end to the embossed vital bank. This corkscrew-like change-of-place of soak is determined helicoidal glide. In this way, eroded embodied from the outedge bank is delighted far and easeed on the vital bank. The alliance of erosion and easeion exaggerates the condescends until vast winds are formed. Sometimes, oxbow lakes are formed when the neck of the loop of a wind is meek through, and the new cut nevertheless behoves the deep agent, leaving the formed agent sealed off by easeion.