Browsing Scholarly literature by Author "Ray, D."
Now showing items 21-34 of 34
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Mineralogical and geochemical variation in hydrothermal sulfides from Vienna Woods field, Manus Basin, Papua New Guinea: constraints on their evolution
Ray, D.; Banerjee, R.; Mazumdar, A.; Paropkari, A.L.; Mukhopadhyay, S.; Balakrishnan, S. (The Chinese Society of Oceanography, 2018)Polymetallic sulfides from two hydrothermal chimneys and talus deposit from the Vienna Woods field of Manus Basin were studied for mineralogy, elemental composition, and S-isotope ratio to understand their evolution. The ... -
Molecular Biomarkers: Their significance and application in marine pollution monitoring
Sarkar, A.; Ray, D.; Shrivastava, A.N.; Sarkar, S. (Springer, 2006)This paper presents an overview of the significance of the use of molecular biomarkers as diagnostic and prognostic tools for marine pollution monitoring. In order to assess the impact of highly persistent pollutants such ... -
Nature of suspended particles in hydrothermal plume at 3°40'N Carlsberg ridge: A comparison with deep oceanic suspended matter
Ray, D.; Babu, E.V.S.S.K.; SuryaPrakash, L. (Current Science Association, 2017)Suspended matter from hydrothermal plume at 3◦40'N Carlsberg Ridge was studied for microtexture and geochemistry. Characteristics of these plume particles were compared with deep-oceanic particulates from different ... -
Phytoplankton community shift in response to experimental Cu addition at the elevated CO2 levels (Arabian Sea, winter monsoon)
Sharma, D.; Biswas, H.; Chowdhury, M.; Silori, S.; Pandey, Medhavi; Ray, D. (Springer, 2023)Understanding phytoplankton community shifts under multiple stressors is becoming increasingly important.Among other combinations of stressors, the impact of trace metal toxicity on marine phytoplankton under the ocean ... -
Porewater and solid phase speciation geochemistry of phosphorus in the Western Bay of Bengal: An assessment of depositional pathways
Linsy, P.; Nath, B.N.; Mascarenhas-Pereira, M.B.L.; Sebastian, T.; Rao, B.R.; Kazip, A.; Ray, D.; Jayachandran, S.; SuryaPrakash, L. (Elsevier, 2023)In this study, we used a combination of porewater phosphate and solid-phase P speciation to examine the present-day benthic biogeochemical cycling and pathways of phosphorus (P) deposition at four sites in the western Bay ... -
S- and Sr-isotopic compositions in barite-silica chimney from the Franklin Seamount, Woodlark Basin, Papua New Guinea: constraints on genesis and temporal variability of hydrothermal fluid
Ray, D.; Banerjee, R.; Balakrishnan, S.; Paropkari, A.L.; Mukhopadhyay, S. (Springer Berlin Heidelberg, 2017)Isotopic ratios of strontium and sulfur in six layers across a horizontal section of a hydrothermal barite-silica chimney from Franklin Seamount of western Woodlark Basin have been investigated. Sr-isotopic ratios in barite ... -
Seasonal variations in the water quality and antibiotic resistance of microbial pollution indicators in the Mandovi and Zuari estuaries, Goa, India
Toraskar, A.D.; Manohar, C.S.; Fernandes, C.L.; Ray, D.; Gomes, A.D.; Ajit, A. (Springer, 2022)The two adjacent estuaries of the rivers Mandovi and Zuari, along the Goa coast in the central west coast of India, are a large complex aquatic system hosting diverse natural habitats. The water quality in these habitats ... -
Seasonal variations in the water quality of six tropical micro and meso-tidal estuaries, central west coast of India
Fernandes, L.L.; Kessarkar, P.M.; Suja, S.; Ray, D.; Bhat, M. (CSIRO PUBLISHING, 2018)Seasonal nutrient dynamics were investigated in four rivers with a microtidal range (Terekhol, Chapora, Sal and Talpona rivers) and were compared with those of two rivers with a mesotidal range (Zuari and Mandovi rivers) ... -
Spatial and seasonal variation of microplastics and possible sources in the estuarine system from central west coast of India
Gupta, Priyansha; Saha, M.; Rathore, C.; Suneel, V.; Ray, D.; Naik, Akshata; Unnikrishnan, K.; Dhivya, M.; Daga, K. (Elsevier, 2021)The versatile use of various synthetic polymers, including plastics, generates a large volume of non-degradable waste, which is eventually responsible for forming microplastics (MPs) in aquatic environments. The present ... -
Tectonic and oceanic processes along the Indian Ocean Ridge system and back arc basin
Kaisary, S.; Ray, D.; KameshRaju, K.A. (National Inst. of Oceanography (CSIR); India, 2009) -
Tectonic and volcanic implications of a cratered seamount off Nicobar Island, Andaman Sea
KameshRaju, K.A.; Ray, D.; Mudholkar, A.V.; Murty, G.P.S.; Gahalaut, V.K.; Samudrala, K.; Paropkari, A.L.; Ramachandran, R.; SuryaPrakash, L. (Elsevier, 2012)The region of the Nicobar earthquake swarm of January 2005 has been explored during a recent cruise using multibeam swath bathymetry, seafloor imaging and TV-guided sampling to decipher the seafloor morphology, nature and ... -
The consequences of reduced anthropogenic activities during the COVID-19 pandemic on microplastic abundance in a tropical estuarine region: Goa, India
Gupta, Priyansha; Saha, M.; Suneel, V.; Rathore, Chayanika; Ray, D.; Naik, Akshata (Elsevier, 2024)Plastic pollution is pervasive, as it has infiltrated every corner of the planet and the COVID-19 pandemic has caused a depletion in the production, consumption, and disposal of plastics. To find out the effect of the ... -
Total mercury and methylmercury in commercial marine species from the Goa coast: Constraints on risk assessment and environmental issues
Ray, D.; Roy, A.; Bhat, M.; Fernandes, C.L. (2019)Mercury (Hg) is a toxic element which accumulates in fish and other aquatic organisms from various sources and poses potential risk to the consumers. Methylmercury (MeHg), the common organic species of mercury, usually ... -
Water-column geochemical anomalies associated with the remnants of a mega plume: A case study after CR-2003 hydrothermal event in Carlsberg Ridge, NW Indian Ocean
Ray, D.; Mirza, I.H.; Prakash, L.S.; Kaisary, S.; Sarma, Y.V.B.; Rao, B.R.; Somayajulu, Y.K.; Drolia, R.K.; KameshRaju, K.A. (Current Science Association, 2008)Recently, an unusually large hydrothermal event (CR- 2003) was reported over the slow-spreading Carlsberg Ridge between 05 degrees 41 minutes N, 61 degrees 30 minutes E and 06 degrees 20 minutes N, 60 degrees 33 minutes ...