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A pair of seamount chains in the Central Indian Basin, identified from multibeam mapping

DRS at CSIR-National Institute of Oceanography

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Title A pair of seamount chains in the Central Indian Basin, identified from multibeam mapping
 
Creator Kodagali, V.N.
 
Subject Seamounts
ocean floor
Central Indian Basin
multibeam mapping
 
Description Seamounts are major physiographic features on the ocean floor. Their study is important to the understanding of the tectonic history of the seafloor. Over 150 seamounts were identified during the multibeam (Hydrosweep system) mapping of the Central Indian Basin. The average depth in this basin is around 5,100 m. Height of these features range from 200 to 1700 m, with varying morphologies ranging from pointed cones to flat tops and cratered tops. Two distinct chains of seamounts and abyssal hills were found. Chain A, along 75~'26'E, has seven features trending along N3~'E. Two of the seamounts in this chain are 1,200 m high and occupy large areas (275 and 170 km@u2@@). One of these seamounts has a cratered top. The crater is 1 km wide and 180 m deep. Two features in Chain A have a high summit width and are flat-topped. Chain B, along 75~'43'E, has six features, N10~'E. The maximum height of the seamounts in this chain is 1,150 m. The flatness values (ratio of summit width to basal width) increase from north to south. Features in the north have pointed cone shapes, while features in the south have flat tops. The southernmost feature has a cratered top, 0.8 km wide and 110 m deep. The trend of the seamounts is parallel to the absolute motion of the Indian plate. Their origin may be related to the rear-axis fast-spreading systems
 
Date 2008-02-22T05:31:29Z
2008-02-22T05:31:29Z
1998
 
Type Journal Article
 
Identifier Marine Geodesy, Vol.21(2); 147-158p.
http://drs.nio.org/drs/handle/2264/973
 
Language en
 
Rights Copyright [1998]. It is tried to respect the rights of the copyright holders to the best of the knowledge. If it is brought to our notice by copyright holder that the rights are voilated then the item would be withdrawn.
 
Publisher Taylor and Francis