Browsing by Subject "oceanographic equipment"
Now showing items 1-14 of 14
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A compact self-recording pressure based sea level gauge suitable for deployments at harbour and offshore environments
(SYMPOL, 2001)A compact and lightweight self-recording pressure based sea level gauge has been designed to suit deployments from harbour and offshore environments. A novel hydraulic coupling device designed in-house was used to transfer ... -
A comparison of synthetic aperture radars applied for satellite remote sensing of the ocean surface
(1993)Doppler imaging radars have orbited the earth aboard several spacecraft for the purpose of monitoring the ocean. Oceanographic applications of synthetic aperture radar (SAR) include measuring ocean wave fields, monitoring ... -
A device for continuous microscopic examination of aquatic microorganisms
(CSIR-NISCAIR, 1987)The device consists of a sealed microscopic mount provided with an inlet for liquid medium and an outlet, permitting continuous flow of the liquid. It permits observation of development of marine microorganisms such as ... -
A new design concept for nodule mining system
(Publ. and Inf. Dir., New Delhi, India, 1994)An overview is presented on the hazards associated with various types of equipment to be used for the commercial mining of nodules from the seabed. The design of a suitable mining collector and the various options available ... -
A statistical method for correcting salinity observations from autonomous profiling floats: An ARGO perspective
(American Meteorological Society, 2005)The Profiling Autonomous Lagrangian Circulation Explorer (PALACE) float is used to implement the Array for Real-Time Geostrophic Oceanography (ARGO). This study presents a statistical approach to correct salinity measurement ... -
Daily SST fields produced by blending infrared and microwave radiometer estimates
(PORSEC 2002 Secretariat; Bogor; Indonesia, 2002)Measurement of Sea Surface Temperature (SST) using satellite based sensors have matured during the last decade. The infrared measurements, using the AVHRR sensor, flown onboard the NOAA satellites, have been used for the ... -
Development of an autonomous vertical profiler for oceanographic studies
(Allied, 2007)The variations in oceanic variables that influence global climate, hypoxia in freshwater reservoirs and in coastal waters as in the west coast of India, the rise of harmful algal blooms are amongst current problems that ... -
Field evaluation of navigational sensors using DGPS/GPS for a small AUV
(Allied, India, 2003)This paper presents the preliminary results of a field experiment for low-cost strap down IMU/GPS combination for the estimation of 2-D components of vehicle position (Trajectory). In present approach the effects of earth ... -
Identification of Msf tide amplification using a network of spatially distributed tide gauges
(Allied, 2007)Attenuation of tidal range (approx. 73%) and amplification of fortnightly Msf tide (approx. 10-fold) in the southern region of Kochi backwaters has been identified based on measurements by a network of spatially distributed ... -
Miniature sonar for obstacle detection on samll AUV Maya
(Allied, 2007)Autonomous platforms are increasingly able to collect in-situ data with least disturbance to the parameters under measurements. To attain high level of autonomy they need to posses capabilities to detect and avoid obstacles ... -
Performance evaluation of Honeywell silicon piezoresistive pressure transducers for oceanographic and limnological measurements
(American Meteorological Society, 2005)Simultaneous calibrations of three temperature-compensated piezoresistive ruggedized precision 'absolute' pressure transducers (Honeywell model PPTR0040AP5VB-BD), which have been designed specially for long-term coastal ... -
Quantitative seafloor characterization using angular backscatter data of the multi-beam echo-sounding system - Use of models and model free techniques
(Allied, India, 2003)For quantitative seafloor roughness characterization and classification using multi-beam processed backscatter data, a good correlation is indicated among the power law parameters (composite roughness model) and hybrid ANN ... -
Spectral irradiance measurements using a novel spectroradiometer
(Publ. and Inf. Dir., New Delhi, India, 1994)A novel design of a spectroradiometer has been implemented and tested in the sea to measure underwater optical and physical properties. The spectroradiometer has two high resolution diffraction-based spectrographs assembled ... -
Web-enabled and real-time reporting: Cellular based instrumentation for coastal sea level and surge monitoring
(Taylor and Francis, 2007)The 26 December 2004 monster tsunami that struck many South Asian countries, and the severe destruction and devastation wrought by that, have drawn attention to the urgent need for a versatile disaster warning system for ...