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Sandhya, C. S.

Application of Indigenously Developed Remotely Operated Vehicle for the Study of Driving Parameters of Coral Reef Habitat of South Andaman Islands, India

Abstract Views :208 | PDF Views:100

Authors

S. Ramesh ¹, G. A. Ramadass ¹, V. Doss Prakash ¹, C. S. Sandhya ¹, R. Ramesh ¹, D. Sathianarayanan ¹, N. V. Vinithkumar ²

Affiliations
1 National Institute of Ocean Technology (NIOT), Ministry of Earth Sciences, Government of India, Chennai 600 100, IN
2 Andaman and Nicobar Centre for Ocean Science and Technology, NIOT, Port Blair 744 103, IN

Source

Current Science, Vol 113, No 12 (2017), Pagination: 2353-2359

Abstract

Coral reef biodiversity in South Andaman Islands, India was studied using indigenously developed remotely operated underwater vehicle, PROVe. The vehicle was manoeuvred in coral reef habitats using underwater navigational aids to record faunal assemblages along with underwater spatio-temporal spectral irradiance characteristics coupled with surface radiance, water temperature, salinity and underwater visuals by high-definition camera devices. PROVe-based observations and the outcome from scientific payloads indicated that it will be a new additional tool for the Indian scientific community to map coral reef habitats, correlate and validate the satellite-derived parameters to understand coral reef health.

Keywords

Coral Reef, Driving Parameters, Remotely Operated Vehicle, Spectral Irradiance.

Full Text

References

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Design and Development of Human Metabolic Simulator for a Deepwater Manned Submersible

Abstract Views :184 | PDF Views:93

Authors

C. S. Sandhya ¹, S. Ramesh ¹, N. Thulasi Prasad ¹, K. N. V. V. Murthy ¹, D. Gobichandhru ¹, M. Murugesan ¹, N. Vedachalam ¹, G. A. Ramadass ¹

Affiliations
1 Deep-Sea Technologies Group, National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai 600 100, IN

Source

Current Science, Vol 122, No 2 (2022), Pagination: 187-194

Abstract

In order to cater to the scientific demand for deep ocean exploration with human presence, manned submersible capable of operating up to 6000 m depth is being designed and developed at National Institute of Ocean Technology. The submersible can accommodate three personnel inside the confined space volume of 4.8 m³ human capsule (personnel sphere) for total endurance of 108 h (12 h normal mission and 96 h in case of emergency). Human Metabolic Simulator was developed by following Det Norske Veritas guideline to validate the life support system design during initial stages of qualification inside the personnel sphere. By considering human respiratory quotient (RQ), HMS was designed by combusting propane gas (RQ 0.6) to produce carbon dioxide, water and heat

Keywords

Human Metabolic Simulator, Life Support System, Manned Submersible, Personnel Sphere, Respiratory Quotient.

Full Text

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