Browsing Institute's contributions by Subject "Geology and geophysics"
Now showing items 1-20 of 50
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A unique corundum and refractory metal-nugget bearing micrometeorite P117
(The Meteoritical Society, 2017)Micrometeorites provide a large range of samples sourced from a wide variety of planetary materials, thereby providing a scope for expanding the known inventory of solar system materials. Here we report the micrometeorite ... -
Ablation and chemical alteration of cosmic dust particles during entry into the earth`s atmosphere
(American Astronomical Society, 2016)Most dust-sized cosmic particles undergo ablation and chemical alteration during atmospheric entry, which alters their original properties. A comprehensive understanding of this process is essential in order to decipher ... -
Advances in marine geophysical studies of the Indian Ocean: Contributions from India (2010-2015)
(Indian National Science Academy, 2016)Indian scientists carrying marine geophysical research at different Earth Science institutions have made significant advances during the last six years (2012-2015) for understanding evolution of continental margins of India ... -
Alkaline phosphatase: An appraisal of its critical role in c-limited deep-sea sediments of central Indian Basin
(Taylor & Francis Group, 2017)Alkaline phosphatase (ALP) is a hydrolase that releases phosphate, a crucial nutrient supporting formation of many macromolecules. The oligotrophic sediments of Central Indian Basin (CIB) were examined for the extent of ... -
An insight into subterranean flow proposition around Alleppey mudbank coastal sector, Kerala, India: Inferences from the subsurface profiles of ground penetrating radar
(Springer, 2016)The mudbank formation along south-western Indian coast has been a scintillating phenomenon during monsoon season, and the source of mud is a debatable issue till now. In the midst of many hypotheses, the subterranean passage ... -
An island chain lost in the Bay of Bengal
(Current Science Association, 2017) -
Anaerobic carbon mineralisation through sulphate reduction in the inner shelf sediments of eastern Arabian sea
(Springer, 2017)Monsoon-induced coastal upwelling, land run-off, benthic and atmospheric inputs make the western Indian shelf waters biologically productive that is expected to lead to high rates of mineralisation of organic matter (OM) ... -
Assessing metal contamination in recent creek sediments using fractionation technique along Mumbai coast, India
(Springer and Business Media, 2017)Three sediment cores from a creek environment in Mumbai, extending from the head to the creek mouth, were studied with respect to elements (Fe, Mn, Cu, Pb, Co, Zn and Cr) along with organic matter (total organic carbon, ... -
Assessment of distribution characteristics of polymetallic nodules and their implications on deep-sea mining
(Springer, 2017)This chapter looks at the distribution characteristics of nodules and associated seafloor features so as to provide this information to the industry for designing a suitable mining system. Further, it also looks at different ... -
Astrobiological implications of dim light phototrophy in deep-sea red clays
(Elsevier, 2017)Red clays of Central Indian Basin (CIB) under influence of trace of Rodriguez Triple Junction exhibited chemoautotrophy, low temperature hydrothermal alterations and photoautotrophic potential. Seamount flank TVBC-08, ... -
Bacterial activity in hydrogenetic ferromanganese crust from the Indian Ocean: A combined geochemical, experimental and pyrosequencing study
(Springer, 2017)The Afanasiy-Nikitin Seamount (ANS) in the Equatorial Indian Ocean harbors hydrogenetic ferromanganese (Fe-Mn) crusts. It was hypothesized that the bacteria associated with the crust catalyze the precipitation of metal ... -
Changes in depositional environment for the past 35 years in the Thane Creek, central west coast of India: Inferences from REEs, metals and magnetic properties
(Springer, 2017)The role of diagenetic processes in influencing the behaviour of metals (Fe, Mn, Cu, Ni, Zn), rare earth elements (REEs) and environmental magnetic parameters in two sediment cores from a polluted creek environment (the ... -
Controls on evolution of gas-hydrate system in the Krishna-Godavari basin, offshore India
(American Geophysical Union Publications, 2017)Abstract In this study, we integrate environmental magnetic, sedimentological, and geochemical records of sediment core of Hole NGHP-01-10D overlying methane hydrate deposits to decipher the controls on the evolution of ... -
Coupling of bacterial nitrification with denitrification and anammox supports N removal in intertidal sediments (Arcachon Bay, France)
(Elsevier, 2016)Microbial activity measurements and molecular approaches were combined to study temporal variation in nitrogen (N) removal mechanisms from muddy and sandy intertidal sediments (Arcachon Bay, France). Stable isotopes ... -
Deep-sea mining: Current status and future considerations
(Springer, 2017)Deep-sea minerals such as polymetallic nodule, hydrothermal sulphides, and ferro-manganese crusts have for long attracted attention as an alternative source of metals to terrestrial deposits. The occurrence of many of these ... -
Deformation of textural characteristics and sedimentology along micro-tidal estuarine beaches
(NISCAIR, 2016)Deformation in the textural characteristics of three selected beaches (Pavinkurve, Kundapura and Padukare) along Karnataka shoreline, west coast of India was examined. Study showed the beaches are significantly composed ... -
Denitrification activity in mangrove sediments varies with associated vegetation
(Elsevier, 2016)To test the hypothesis that mangrove vegetation associated sediment characteristics could influence an ecologically important function such as denitrification, a study was carried out at the Divar mangrove ecosystem in ... -
Development of environmental management plan for deep-sea mining
(Springer, 2017)Deep-sea mining is currently at a stage when several mine sites have been identified, mining technologies are under development, processing technologies are being tested, studies for assessing potential environmental impacts ... -
Discriminating the biophysical impacts of coastal upwelling and mud banks along the southwest coast of India
(Elsevier, 2017)Coastal upwelling and mud banks are two oceanographic processes concurrently operating along certain stretches of the southwest (Kerala) coast of India during the Southwest Monsoon period (June-September), facilitating ... -
Distribution and fractionation of rare earth elements and Yttrium in suspended and bottom sediments of the Kali estuary, western India
(Springer, 2017)Concentrations of rare earth elements (REE) and yttrium (Y), and major metals (Al, Fe and Mn) were measured in suspended particulate matter (SPM) and bottom sediments of the Kali estuary, western India, for their distribution ...