Seabed topography and distribution of manganese nodules in the Central Indian Ocean

dc.contributor.author	Pattan, J.N.
dc.contributor.author	Kodagali, V.N.
dc.date.accessioned	2006-04-10T07:44:24Z
dc.date.available	2006-04-10T07:44:24Z
dc.date.issued	1988
dc.identifier.citation	Mahasagar, vol.21, 7-12
dc.identifier.uri	http://drs.nio.org/drs/handle/2264/54
dc.description.abstract	The relationship between seabed topography and distribution of nodules, recovery of free fall grab samplers, nodule size and chemical composition of manganese nodules in the Central Indian Ocean have been studied. Nodule abundance was greater (4.2 kg/m2) in rugged topography (hill tops, slopes, and valleys) than in the abyssal plains (2.3 kg/m2). Similarly, the recovery of grab samplers was more from rugged topographic areas (66%) than from the plains (47.5%). Nodules of <40 mm size was greater in number in all the topographic environments. Mn/Fe ratio was least (2.2) for nodules from hill taps whereas it was maximum for those from the plains (4.4). Cu+Ni+Co compositioin varied antipathetically with nodule abundance in the Central Indian Ocean.
dc.format.extent	267239 bytes
dc.format.mimetype	application/pdf
dc.language.iso	en
dc.publisher	National Institute of Oceanography, Goa
dc.title	Seabed topography and distribution of manganese nodules in the Central Indian Ocean
dc.type	Journal Article