DRS at CSIR-National Institute of Oceanography: Recent submissions
Now showing items 2611-2630 of 9376
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Authigenic Gypsum in Gas-Hydrate Associated Sediments from the East Coast of India (Bay of Bengal)
(Geological Society of China, 2013)Authigenic gypsum crystals, along with pyrite and carbonate mineralization, predominantly calcites were noticed in distinct intervals in a 32 m long piston core, collected in the gas hydrate-bearing sediments in the northern ... -
Bioconcentration of trace metals by Saccostrea cucullata (von Born 1778) from Andaman waters
(CSIR-NISCAIR, 2013)Assessment of trace metals (Zn, Cu, Fe, Pb and Ni) in water, sediment and an oyster, Saccostrea cucullata, was carried out in five stations around Port Blair. Concentration of these metals in water, sediment and the oyster ... -
Anisotropic amplitude variation of the bottom-simulating reflector beneath fracture-filled gas hydrate deposit
(American Geophysical Union, 2013)For the first time, we report the amplitude variation with angle (AVA) pattern of bottom-simulating reflectors (BSRs) beneath fracture-filled gas hydrate deposits when the effective medium is anisotropic. The common depth ... -
Geophysical signatures over and around the northern segment of the 85 degrees E Ridge, Mahanadi offshore, Eastern Continental Margin of India: Tectonic implications
(Elsevier, 2013)The nature and origin of the subsurface 85 degrees E Ridge in the Bay of Bengal has remained enigmatic till date despite several theories proposed by earlier researchers. We reinterpreted the recently acquired high quality ... -
Restoration scaling of seagrass habitats in the oceanic islands of Lakshadweep, India using geospatial technology
(Springer, 2013)Small isolated oceanic islands are renowned for endemic species and biological wealth. Many small island administrations all over the world face complex challenges in protecting their natural resources. Restoration of ... -
Salt intrusion study in Cochin estuary - Using empirical models
(CSIR-NISCAIR, 2013)Intensive measurements of salt intrusion are taken at high and low waters during spring and neap tide for each month respectively from June 2007 to May 2008. Salt intrusion length at high water varied from 10 km in monsoon ... -
Tropical storm off Myanmar coast sweeps reefs in Ritchie's Archipelago, Andaman
(Springer, 2013)The reefs in some islands of Andaman and Nicobar suffered severe damage following a tropical storm in the Bay of Bengal off Myanmar coast during 13-17 March 2011. Surveys were conducted at eight sites in Andaman, of which ... -
Assessment of MODIS-Aqua chlorophyll-a algorithms in coastal and shelf waters of the eastern Arabian Sea
(Elsevier, 2013)The use of ocean colour remote sensing to facilitate the monitoring of phytoplankton biomass in coastal waters is hampered by the high variability in absorption and scattering from substances other than phytoplankton. The ... -
Response of phytoplankton to nutrient enrichment with high growth rates in a tropical monsoonal estuary - Zuari estuary, India
(CSIR-NISCAIR, 2013)Present study is about the impact of macronutrient enrichment on phytoplankton biomass and community structure in a tropical monsoonal estuary. In situ experiments carried out during the pre-monsoon period (February-March ... -
Waiting for the deluge
(CSIR-NISCAIR, 1991)Evidences show that levels of the world's seas are gradually rising The article discusses the causes and effects of such a rise in the sea level on the earth The relation between increase in greenhouse gases and sea level ... -
Our changing coastlines
(CSIR-NISCAIR, 1989)Our coastlines keep alive the sense of continuing creation and of the relentless drive of life In recent years, much has been done both to understand the processes that underlie their creation and to exploit their environment ... -
Back-arc extension in the Andaman Sea: Tectonic and magmatic processes imaged by high-precision teleseismic double-difference earthquake relocation
(American Geophysical Union, 2013)The geometry, kinematics, and mode of back-arc extension along the Andaman Sea plate boundary are refined using a new set of significantly improved hypocenters, global centroid moment tensor (CMT) solutions, and high-resolution ... -
Degradation of barnacle nauplii: Implications to chitin regulation in the marine environment
(Springer, 2013)The exoskeleton of most invertebrate larval forms is made of chitin, which is a linear polysaccharide of beta (1→4)-linked N-acetylglucosamine (GlcNAc) residues. These larval forms offer extensive body surface for bacterial ... -
Environmental gradient favours functionally diverse macrobenthic community in a placer rich tropical bay
(Hindawi Publishing, 2013)The present paper examines the functional diversity-environment relation in a placer rich tropical bay. The geographic location of Kalbadevi Bay along the west coast of India provides an opportunity to study the functional ... -
Protective role of edible clam Paphia malabarica (Chemnitz) against lipid peroxidation and free radicals
(Turkish Biochemical Society, 2013)In vitro inhibition of lipid peroxidation and free radical scavenging properties of a seafood Paphia malabarica (Chemnitz) as a natural source of antioxidants was observed. Antioxidant activities of Paphia malabarica ... -
Biogeochemical significance of eddies of the eastern Arabian Sea
(Levente Hufnagel (ALÖKI Kft.), 2013)Within the Arabian Sea, the western part is considered to be highly productive when compared to the northern, central and eastern parts of the basin. Despite the contrasting chlorophyll and primary productivity patterns, ... -
Distribution of biochemical constituents in the surface sediments of western coastal Bay of Bengal: Influence of river discharge and water column properties
(Springer, 2013)Biochemical composition of surface sediment samples from off major and minor rivers along the east coast of India revealed that spatial distribution of sediment organic carbon (SOC) composition was mainly governed by ... -
Acoustic characterization of continental shelf seafloor and benthic habitats using single and multi-beam backscatter data
(Institute of Applied & Computational Mathematics, 2013)Satellite based marine remote sensing is a conventional technique for oceanographic research studies. Likewise, in the future projection application of the acoustic remote sensing using high frequency single-beam echo-sounder ... -
Importance of contextual information for harnessing microbial resources from polar regions
(LIGHTS Research Foundation, 2013)With growing interest in scientific and commercial pursuits extending up to the poles, new challenges for both environmental diplomacy and governance could be envisaged. Polar regions could be veritable store house for ... -
Decadal and long-term sea level variability in the tropical Indo-Pacific Ocean
(Springer, 2013)Decadal and long-term steric sea level variations over 1966-2007 period in the Indo-Pacific sector were analysed using an ocean general circulation model forced by reanalysis winds. The simulated steric sea level compares ...