Browsing by Author "KameshRaju, K.A."
Now showing items 21-40 of 63
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Geomorphological and petrological observations along a segment of slow-spreading Carlsberg Ridge
Mudholkar, A.V.; Kodagali, V.N.; KameshRaju, K.A.; Valsangkar, A.B.; Ranade, G.; Ambre, N.V. (Indian Academy of Sciences, 2002)A 120-km-long section of the Carlsberg Ridge has been mapped with multi-beam bathymetry system (MBS). High-resolution bathymetric contour map generated with the MBS data shows well-defined axial valley bordered by steep ... -
Geophysical characteristics of the Ninetyeast Ridge–Andaman island arc/trench convergent zone
Subrahmanyam, C.; Gireesh, R.; Chand, S.; KameshRaju, K.A.; Rao, D.G. (Elsevier, 2008)The convergence tectonics of the Ninetyeast Ridge (NER), upon the Andaman island arc–trench system is examined through an analysis of ETOPO2 bathymetry, satellite-derived free air gravity and seismic data. Oblique subduction ... -
Geophysical investigations over a segment of the Central Indian Ridge, Indian Ocean
KameshRaju, K.A.; Ramprasad, T.; Subrahmanyam, C. (Springer, 1997)Swath bathymetric, gravity, and magnetic studies were carried out over a 55 km long segment of the Central Indian Ridge. The ridge is characterized by 12 to 15 km wide rift valley bounded by steep walls and prominent ... -
Geophysical studies over a segment of the Carlsberg Ridge, Indian Ocean
Ramana, M.V.; Ramprasad, T.; KameshRaju, K.A.; Desa, M. (Elsevier, 1993)The study of magnetic, gravity and bathymetric data over a segment of Carlsberg Ridge between 3 degrees and 4 degrees N lat., and 63 degrees 30' and 64 degrees 30'E long. revealed the presence of a prominent 57 degrees W ... -
Gravity anomalies and crustal structure of the Bay of Bengal
Subrahmanyam, V.; Krishna, K.S.; Murthy, I.V.R.; Sarma, K.V.L.N.S.; Desa, M.; Ramana, M.V.; KameshRaju, K.A. (Elsevier, 2001)The Bengal Fan is covered afresh by systematic geological and geophysical investigations by National Institute of Oceanography (NIO), India and a detailed free-air gravity map of the fan is prepared. The map shows two ... -
Gravity anomalies and crustal structure of the western continental margin off Goa and Mulki, India
Subrahmanyam, V.; Rao, D.G.; Ramprasad, T.; KameshRaju, K.A.; Rao, M.G. (Elsevier, 1991)Bathymetric and gravity data totalling 2000 line kilometres on the continental margin off Goa and Mulki, India, have been studied and prominent NNW-SSE and ENE-WSW trending free-air gravity anomalies varying between -60 + ... -
Gravity anomalies over a segment of Pratap ridge and adjoining shelf margin basin, western continental margin of India
Subrahmanyam, V.; Rao, D.G.; Ramprasad, T.; KameshRaju, K.A.; Rao, M.G. (Oxford and IBH, New Delhi, 1992)Bathymetric and gravity data totalling 2000 line km on the continental margin off Goa and Mulki, west of India have been studied. The free-air gravity anomalies vary between -60 to 25 mgals with prominent NNW-SSE trends ... -
Gravity anomalies over the central Indian ridge between 3 degree S and 11 degree S, Indian Ocean: Segmentation and crustal structure
Samudrala, K.; KameshRaju, K.A.; RamaRao, P. (Indian Academy of Sciences, 2016)High-resolution shipboard geophysical investigations along the Indian Ocean ridge system are sparse especially over the Carlsberg and Central Indian ridges. In the present study, the shipboard gravity and multibeam bathymetry ... -
Hydrothermal plumes over the Carlsberg Ridge, Indian Ocean
Ray, D.; KameshRaju, K.A.; Baker, E.T.; Rao, A.S.; Mudholkar, A.V.; Lupton, J.E.; SuryaPrakash, L.; Gawas, R.B.; VijayaKumar, T. (American Geophysical Union, 2012)Water column surveys and sampling in 2007 and 2009 was conducted to search for hydrothermal plumes over a segment of the Carlsberg Ridge. An evidence for two separate vent fields, one near 3 degrees 42′N, 63 degrees 40′E ... -
International Symposium on Geology and Geophysics of the Indian Ocean (GIO-96), 21-25 October, 1996 - Meeting Report
Rao, Ch.M.; Rao, P.S.; KameshRaju, K.A. (Geological Society of India, 1997) -
InterRidge Workshop `Tectonic and Oceanic Porcesses along the Indian Ocean Ridge System`, 19-21 January 2005, N.I.O., Goa, India
KameshRaju, K.A.; Mudholkar, A.V. (International Cooperation of Ridge-Crest Studies, 2005) -
Late Quaternary Sedimentation and Slope Failure Events on the Costa Rican Margin
Nath, B.N.; Yatheesh, V.; Yazing, A.K.; Prabhu, S.R.; Borker, A.; Pandey, D.K.; KameshRaju, K.A. (Springer, Cham, 2020)The Costa Rican margin is an erosional convergent margin formed by subduction of the Cocos Plate under the Caribbean Plate along the Middle America Trench. The Integrated Ocean Drilling Program (IODP) Expedition 334 was ... -
Magma genesis at Andaman volcanic arc regime, Northeastern Indian Ocean: Role of slab-mantle interaction
Saha, A.; Mudholkar, A.V.; KameshRaju, K.A. (International Union of Geological Sciences, 2020)This study reports new petrological and geochemical data of submarine volcanic rocks dredged from the Andaman arc, northeastern Indian Ocean and evaluates their petrogenetic and tectonic implications. The studied samples ... -
Magnetic and bathymetric studies in the vicinity of the 73 degree E fracture zone, Central Indian Basin
KameshRaju, K.A. (Elsevier, 1990) -
Magnetic lineations in the Central Indian Basin for the period A24-A21: a study in relation to the Indian Ocean Triple junction trace
KameshRaju, K.A.; Ramprasad, T. (Elsevier, 1989)A detailed study of magnetics and bathymetry was carried out in the Central Indian Basin between latitudes 9 degrees S and 16 degrees 30'E and longitudes 73 degrees E and 79 degrees 30'E. The observed east-west trending ... -
Magnetic lineations, fracture zones and seamounts in the Central Indian Basin
KameshRaju, K.A. (Elsevier, 1993)Magnetic and bathymetric data collected in the Central Indian Basin, between 8 degrees S and 16 degrees S lat., and 71 degrees E and 82 degrees E long. have been studied. The inferred fracture zones at 73 degrees E, 76 ... -
Marine geophysical studies along a transect across the continental margin off Bombay coast, west of India
Rao, D.G.; Ramana, M.V.; Bhattacharya, G.C.; SubbaRaju, L.V.; KameshRaju, K.A.; Ramprasad, T. (Oxford and IBH, New Delhi, 1992)Study of underway geophysical data along a transect of 415 km across the continental margin off Bombay, (Maharashtra, India), between 800 and 3600 m water depths reveals seven seismic sequences consisting of parallel and ... -
Megafaunal community structure of Andaman seamounts including the back-arc basin - A quantitative exploration from the Indian Ocean
Sautya, S.; Ingole, B.S.; Ray, D.; Stohr, S.; Samudrala, K.; KameshRaju, K.A.; Mudholkar, A.V. (Public Library of Science, 2011)Species rich benthic communities have been reported from some seamounts, predominantly from the Atlantic and Pacific Oceans, but the fauna and habitats on Indian Ocean seamounts are still poorly known. This study focuses ... -
Microbathymetry inferences from two AUV dives over a short segment of the Central Indian Ridge between 10�18' and 10�57'S, Indian Ocean
KameshRaju, K.A.; Yatheesh, V.; Rao, A.S.; SuryaPrakash, L.; Ray, D.; Mudholkar, A.; Samudrala, K.; Augustin, N.; Kurian, P.J. (Springer, 2023)The topographic fabric of the rift valley floor has been analyzed using the multibeam echosounder data obtained by the autonomous underwater vehicle (AUV) Abyss at two locations over a short segment of the slow-spreading ... -
Morphotectonic signatures and revised timing of opening of the Andaman Backarc Basin, Northeast Indian Ocean
Yatheesh, V.; Aswini, K.K.; KameshRaju, K.A.; Savio, J.J.; Gawas, Amol; Dewangan, P. (Elsevier, 2021)The Andaman Backarc Basin is believed to have been formed by the present episode of seafloor spreading in the Andaman Sea, separating the Alcock Rise in the north (Burmese Plate) and the Sewell Rise in the south (Sunda ...