Browsing by Author "Jacob, J."
Now showing items 1-17 of 17
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Aggregation of Euphausia sibogae during summer monsoon along the southwest coast of India
Jayalakshmi, K.J.; Jasmine, P.; Muraleedharan, K.R.; Prabhakaran, M.P.; Habeebrehman, H.; Jacob, J.; Achuthankutty, C.T. (Hindawi Publishing, 2011)The influence of environmental parameters on the spawning aggregation of Euphausia sibogae was investigated along the southwest coast of India during the peak phase of summer monsoon 2005. The prevailing ecological conditions ... -
Biogeochemical characteristics of the surface sediments along the western continental shelf of India
Jacob, J.; Jayaraj, K.A.; Rehman, H.H.; Chandramohanakumar, N.; Balachandran, K.K.; Raveendran, T.V.; Joseph, T.; Nair, M.; Achuthankutty, C.T. (Taylor & Francis, 2009)Surface sediments from the western continental shelf of India were analysed for total organic carbon (TOC), total nitrogen (TN), total hydrolysable carbohydrates (TCHO) and proteins (PRT) during the late summer monsoon ... -
Biogeochemistry of the surficial sediments of the western and eastern continental shelves of India
Jacob, J.; Chandramohanakumar, N.; Jayaraj, K.A.; Raveendran, T.V.; Balachandran, K.K.; Joseph, T.; Nair, M.; Achuthankutty, C.T.; Nair, K.K.C.; George, R.; Ravi, Z.P. (Coastal Education and Reserch Foundation, 2008)Even though continental margins cover only about 7-9 % of the world ocean area, they are important sites for organic carbon accumulation and hence play a major role in biogeochemical carbon cycling. Surface sediments from ... -
Gas migration signatures over the volcanic cratered seamount, off the Nicobar Islands in the Andaman Sea
Sriram, G.; Dewangan, P.; Yatheesh, V.; Peketi, A.; Mahesh, P.; Mazumdar, A.; Mahale, V.; Jacob, J.; Dubey, K.M.; Kumar, Pankaj; Mishra, C.K.; Gautham, S.; Anirudh, A.K.; Ankush, P.; MadhavRam, A.B.; Shijin, K.K.; Salkar, T.G.; Zatale, Anjali; Rajurkar, V.; Khokher, S.H.; Garg, Shriya; Choudhary, A.K.; Aswini, K.K.; Gawas, Amol (Springer, 2023)The submarine volcanic arc off-Nicobar is seismologically very active with numerous earthquake swarms reported after the tsunamigenic 26th December 2004 earthquake in the Andaman-Nicobar-Sumatra subduction zone. Therefore, ... -
Hydrographic characterization of southeast Arabian Sea during the wane of southwest monsoon and spring intermonsoon
VimalKumar, K.G.; DineshKumar, P.K.; Smitha, B.R.; Rahman, H.H.; Jacob, J.; Muraleedharan, K.R.; Sanjeevan, V.N.; Achuthankutty, C.T. (Springer, 2008)Seasonal variation of the hydrography along the southeast Arabian Sea is described using data collected onboard FORV Sagar Sampada in September-October 2003 (later phase of Southwest monsoon, SWM) and March-April 2004 ... -
Infaunal macrobenthic community of soft bottom sediment in a tropical shelf
Jayaraj, K.A.; Jacob, J.; DineshKumar, P.K. (Coastal Education and Reserch Foundation, 2008)Studies of benthic communities in tropical shelf waters are limited. In this study, we deal with the infaunal benthic community of soft bottom sediment of the tropical eastern Arabian Sea shelf. Benthic macroinfauna was ... -
Integration of recent drill results with multichannel seismic reflection data: New inferences on the subsurface configuration and sedimentary history of the northwestern Bay of Bengal
Desa, M.A.; Jacob, J.; Fernandes, Walsh; Khan, S.A. (Elsevier, 2023)The study pertains to the use of two industry wells and one IODP drill site in conjunction with high quality multichannel seismic reflection data in the northwestern Bay of Bengal. The industry wells provide subsurface ... -
Lithospheric architecture beneath the Amsterdam-St. Paul plateau, Southern Indian Ocean using the integrated gravity, magnetic and seismological study
Kumar, Pankaj; Singha, Pabitra; Ghosal, D.; Jacob, J.; Gupta, Sandeep (Elsevier, 2023)Evolution of the Amsterdam-St. Paul (ASP) plateau is debated as a consequence of the Kerguelen mantle plume interaction with the South-East Indian Ridge (SEIR) or related with a weaker ASP plume origin. We performed an ... -
Preliminary results of a recent cruise to the Northern Central Indian Ridge
Drolia, R.K.; Iyer, S.D.; Chakraborty, B.; Kodagali, V.N.; Mukhopadhyay, R.; Nanyasi, S.K.; Sarma, K.V.L.N.S.; Rajasekhar, R.P.; Misra, S.; Ray, Dwijesh; Andrade, R.; Lasitha, S.; Varghese, J.; Jacob, J.; Sukumaran, N.P.; Pednekar, A.; Furtado, R.; Nair, A. (InterRidge, 2002) -
Response of infaunal macrobenthos to the sediment granulometry in a tropical continental margine southwest coast of India
Jayaraj, K.A.; Sheeba, P.; Jacob, J.; Revichandran, C.; Arun, P.K.; Praseeda, K.S.; Nisha, P.A.; Rasheed, K.A. (Elsevier, 2008)Surficial sediment samples, collected from the continental margin of the southwest coast of India in July 2004, were examined for the grain size and soft-bottom macrobenthic fauna, to understand the sediment granulometry ... -
Revisiting the structure, age, and evolution of the Wharton Basin to better understand subduction under Indonesia.
Jacob, J.; Dyment, J.; Yatheesh, V. (American Geophysical Union, 2014)Understanding the subduction processes along the Sunda Trench requires detailed constraints on the subducting lithosphere. We build a detailed tectonic map of the Wharton Basin based on reinterpretation of satellite-derived ... -
Seasonal variations and trophic ecology of microzooplankton in the southeastern Arabian Sea
AshaDevi, C.R.; Jyothibabu, R.; Sabu, P.; Jacob, J.; Habeebrehman, H.; Prabhakaran, M.P.; Jayalakshmi, K.J.; Achuthankutty, C.T. (Elsevier, 2010)The seasonal ecological response of microzooplankton in the southeastern Arabian Sea is presented. During the spring intermonsoon period, stratification and depletion of nitrate in the surface waters (nitracline was at 60 ... -
Seasonal variations in the sediment biogenic properties of a tropical mangrove environment, southwest coast of India
Nair, M.; Jacob, J.; Nisha, P.A.; Martin, G.D.; Srinivas, K.; Sheeba, P.; Laluraj, C.M.; Joseph, T.; Balachandran, K.K. (Springer, 2010)Temporal and spatial changes in the sediment properties of a mangrove ecosystem (Cochin, southwest coast India) are presented. The region was freshwater dominated during monsoon (June-September) and seawater dominated ... -
Strike-slip seismicity at the Andaman-Sumatra Subduction Zone: Role of the fracture zones and age of the subducting lithosphere
Jacob, J.; Dyment, J.; Ghosal, D.; Dewangan, P. (Elsevier, 2021)A better comprehension of the shallow strike-slip seismicity along the Sunda Trench is achieved by superimposing the Wharton basin fracture zones, magnetic isochrones, and focal mechanisms to the geometry of the subducting ... -
Tectonic appraisal of the Mid-Thane Creek of Mumbai, India: An integrated geophysical approach
Jacob, J.; Pitchika, V.K.; Dubey, K.M.; Mishra, Akhil; Kumar, Pankaj; Kumar, Shravan; Mahale, V.; Chaubey, A.K. (Springer, 2020)Integrated geophysical surveys, comprising marine magnetic, high resolution shallow seismic and single-beam bathymetry were conducted to assess subsurface tectonics of the Mid-Thane Creek (MTC) of Mumbai. The bathymetry ... -
The response of microzooplankton (20-200 mu m) to coastal upwelling and summer stratification in the southeastern
Jyothibabu, R.; Devi, C.R.A.; Madhu, N.V.; Sabu, P.; Jayalakshmy, K.V.; Jacob, J.; Habeebrehman, H.; Prabhakaran, M.P.; Balasubramanian, T.; Nair, K.K.C. (Elsevier, 2008)During the late summer monsoon (LSM), coastal upwelling and river runoff have increased the nutrient concentration in the inshore region of the southeastern Arabian Sea. This has resulted in elevated chlorophyll-a (av. 40 ... -
Variability in biological responses influenced by upwelling events in the Eastern Arabian Sea
Habeebrehman, H.; Prabhakaran, M.P.; Jacob, J.; Sabu, P.; Jayalakshmi, K.J.; Achuthankutty, C.T.; Revichandran, C. (Elsevier, 2008)This study documents the result of field observations from the southeastern Arabian Sea during onset, peak and late phases of summer monsoon. The pronounced variations in phytoplankton standing stock (chlorophyll a), primary ...