期刊名称：International Research Journal of Earth Sciences
电子版ISSN：2321-2527
出版年度：2016
卷号：4
期号：1
页码：13-26
语种：English
出版社：International Science Community Association
摘要：Kalindri River originates from River Phulhar at Najirpur (87053/48//E and 25008/13//) and joins Mahananda opposite the town of Old Malda after flowing south eastern direction of 54 km. The course of the Klindri highly migration prone and exhibits a complex fabric of channel change over time. Present paper will highlight on the nature and magnitude of channel migration in different reaches of the channel. A detail empirical survey has been conducted in different parts of course of Kalindri and various secondary data has been also used to prepare this paper.Phase wise map of the river has been prepared with the help of topo-sheets and Satellite images in GIS environment. To examine the reach wise magnitude of migration, polygon area method has been considered. The convenience of the work, entire channel has been sub divided into four reaches (K1, K2, K3and K4) based on some relevant parameters. The result displays that degree of sinuosity of the river increases from its previous course (1767) to present. The study suggests that the K3 reach is highly sinuous in nature (at SI = 3.16 in 2010). Rate of migration is recorded higher in phase-1(1924-1955) than phase-2 (1955-2010).In phase1 reach specific migration rate is higher (28.60 metre/year)in K4 than other reaches but phase-2 showing quite different result where K2 reach is highly migration prone than other reaches. The study suggests decreasing trend of rate of lateral migration with respect to its previous lateral migration history. This migratory nature is highly entangled with life and livelihood of the people lived there on.
关键词：River channel migration;Lateral migration;Reach identification;Meandering and Migration rate
