Browsing by Subject "echosounding"
Now showing items 1-10 of 10
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Acoustic seafloor sediment classification using self-organizing feature maps
(IEEE, 2001)A self-organizing feature map (SOFM), a kind of artificial neural network (ANN) architecture, is used in this work for continental shelf seafloor sediment classification. Echo data are acquired using an echosounding system ... -
Arc arrays: studies of high resolution techniques for multibeam bathymetric applications
(Elsevier, 1995)In this paper a theoretical study is initiated to observe the utility of directional spectral estimation techniques for `arc array' geometries. We examine the suitability of a 15 degrees arc transducer geometry for multibeam ... -
Influence of sedimentation on the geomorphology of the northwestern continental margin of India
(Taylor and Francis, 2000)Based upon the analysis of about 10,000 line km of echosounding and bathymetric data and variations in mass accumulation rate along the NW continental margin of India (between Kori creek and Mumbai), which has deduced in ... -
Scenario of gas-charged sediments and gas hydrates in the western continental margin of India
(Indian Geophysical Union, 2002)Echosounding, high-resolution shallow seismic data were collected along track lines spaced at 20 km interval across the western continental margin of India. A detailed analysis of the underway data revealed the occurrence ... -
Sea-floor classification using multibeam echo-sounding angular backscatter data: A real-time approach employing hybrid neural network architecture
(IEEE, 2003)The presently studied numerical model, e.g., composite roughness, is successful for the purpose of sea-floor classification employing processed multibeam angular backscatter data from manganese-nodule-bearing locations of ... -
Seabed surveys of Mormugao Harbour, Central west coast of India
(CSIR-NISCAIR, 1988)Detailed echosounding, side scan sonar and shallow seismics (125 line km) covering an area of 6.2 km2 in the Mormugao harbour provided information on seabed topography, surficial distribution of sediments, their thickness ... -
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 ... -
Study of multibeam techniques for bathymetry and seabottom backscatter applications
(Cochin University of Science and Technology, Kochi, 1997)In this paper, a brief discussion is carried out on the application of the different techniques of echosounding. A deteiled appraisal of the presently used multibeam technique is mentioned. Some of the important discoveries ... -
Topographic Features over the Continental Shelf off Visakhapatnam
(Indian Association for Limnology and Oceanography, 1980)Continuous echosounding surveys have been carried out along sixteen profiles covering the entire continental shelf between Bheemunipatnam and Kutukonda. Over the inner shelf and mid-shelf the bottom topography is smooth ... -
Use of swath data in realtime navigation by pattern recognition
(Elsevier, 1989)A new method is proposed with the aim of reducing dead reckoning error (DRE) during multibeam echosounding survey in deep ocean. Bathymetric data is used in this method to estimate DRE in position fixing. This method can ...