Browsing Institute's contributions by Title
Now showing items 7135-7154 of 9167
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Seafaring Archaeology of the East Coast of India and Southeast Asia during the Early Historical Period
(Ubiquity Press, 2017)The concept of trade in ancient India was quite different from modern times. In olden day�s mariners, artisans, traders, Buddhist monks and religious leaders used to set sail together and this trend continued till the ... -
Seafloor and sediment characteristics in INDEX AREA
(Metal Mining Agency of Japan, 1997)Seafloor surveys and sediment sampling during the INDEX (Indian Deep-Sea Environmental Experiment) studies in the Central Indian Basin, resulted in identification of Test and Reference Areas, as well of establishment of ... -
Seafloor backscatter signal simulation and classification
(Allied, India, 2005)In this paper, simulation study is initiated to observe the interaction effect of the sound signal with different seafloors types and its classification. Simulation of the echo envelope signal is done by accurately formulating ... -
Seafloor characterisation using echo peak amplitudes of multibeam hydrosweep system - A preliminary study at Arabian Sea
(Cochin Univ. Sci. and Technol., Cochin, India, 1995)In this paper an interface to acquire 59-beams echo peak amplitudes of the Hydrosweep Multibeam system is established. The echo peak amplitude values collected at varying seabed provinces of Arabian sea are presented. The ... -
Seafloor characterization using time-dependent acoustic backscatter: Study at Arabian Sea
(IEEE, 2008)This paper presents application of `inversion modeling` technique to echo shape data acquired shallow water regions off Goa. The estimated sediment and seafloor roughness parameter for two different frequencies (33 and 210 ... -
Seafloor classification of the mound and channel provinces of the Porcupine Seabight: An application of the multibeam angular backscatter data
(Springer, 2007)In this study multibeam angular backscatter data acquired in the eastern slope of the Porcupine Seabight are analysed. Processing of the angular backscatter data using the ‘NRGCOR’ software was made for 29 locations ... -
Seafloor classification using acoustic backscatter echo-waveform - Artificial neural network applications
(IEEE Singapore Section Secretariat, 2006)In this paper seafloor classifications system based on artificial neural network (ANN) has been designed. The ANN architecture employed here is a combination of Self Organizing Feature Map (SOFM) and Linear Vector Quantization ... -
Seafloor classification using echo- waveforms: A method employing hybrid neural network architecture
(IEEE, 2004)This letter presents seafloor classification study results of a hybrid artificial neural network architecture known as learning vector quantization. Single beam echo-sounding backscatter waveform data from three different ... -
Seafloor geomorphology and processes on the Western continental margin of India based on multibeam acoustic backscatter data analysis
(Taylor & Francis, 2018)An assessment of the multibeam sonar data of the central Western Continental Margins of India has been carried out to evaluate the seafloor geomorphology and processes by examining the geomorphological attributes e.g., ... -
Seafloor mapping of large areas using multibeam system - Indian experience
(1994)To identify unproductive and difficult terrains, a detailed picture of the seafloor was essential. Hence, the area was resurveyed using the multibeam system hydrosweep during 1990-93. A total of 300,000 sq.km area has been ... -
Seafloor micro-roughness, benthic macro-fauna, and sediment substrate: A study of their interrelationship using high-frequency echo-sounding systems
(CSIR-NISCAIR, 2015)The spatial variability of sediment geoacoustic inversion results, derived from dual-frequency single-beam (SBES) and multi-beam echosounder system (MBES) operable at 33/210 kHz and 95 kHz, respectively, have been analyzed ... -
Seafloor roughness estimation employing bathymetric systems: An appraisal of the classification and characterization of high-frequency acoustic data
(American Institute of Physics, 2012)The study of the seafloor is important for living and non-living resource estimation along with the related processes identification. To understand the fine-scale seafloor processes, various methods such as application of ... -
Seafloor spreading magnetic anomalies in the Enderby Basin, East Antarctic
(Elsevier, 2001)The timing of the early separation of India from the contiguous Antarctic-Australia is still an unresolved problem although it is well established that Antarctica and India formed a single Indo-Antarctic platform prior to ... -
Seafloor spreading magnetic anomalies in the southeastern Arabian Sea
(Elsevier, 1995)Study of closely spaced new marine magnetic profiles in the southeastern Arabian Sea has enabled fairly confident identification of E-W trending linear magnetic anomalies 24 through 20. These magnetic lineations are ... -
Seafloor spreading magnetic anomalies south off Sri Lanka
(Elsevier, 2006)Results obtained from compilation and reinterpretation of about 21,200 line km of bathymetry, magnetic and satellite gravity data between 10oS to 10oN latitudes and 75 to 90oE longitudes south off Sri Lanka are presented ... -
Seagrass habitat complexity and macroinvertebrate abundance in Lakshadweep coral reef lagoons, Arabian Sea
(Springer, 1991)Macrofauna of seagrass community in the five Lakshadweep atolls were studied and compared. The associated epifaunal and infaunal taxa comprising nine major taxonomic groups, showed significant differences in the total ... -
Seagrasses - The forgotton marine habitat
(WWF for Nature-India, 2004)Seagrasses, a specialized group of flowering plants, submerged in the marine, estuarine, bay and backwater regions of the world. Though seagrass beds are of great ecological and socio economic importance, they are mostly ... -
Seamounts - characteristics, formation, mineral deposits and biodiversity
(Biblioteca de Geologia (UB-CSIC), 2012)Seamounts represent crust-mantle activities and are areas of petrological deviations, biodiversity, seismicity and hydrothermal events. An estimated approx. 50 million tons/year of basalts are required to produce seamounts ... -
Seamounts - Their formation, mineral deposits, biodiversity and atmospheric oxygen.
(Indian Society for Earth, Planetary and Environmental Sciences (ISEPES), 2009)This article expounds on (1) the production and distribution of seamounts in the formation of mineral deposits and (2) the influence of seamounts in the spatial variation of organisms -
Seamounts - windows of opportunities and the Indian scenario
(Current Science Association, 2012)Seamounts are manifestations of crustal tectonics and volcanism, and are also sites of biodiversity and hydrothermal events. Although the population of seamounts is estimated to be in thousands, a large number of these ...