Communications and power to the seafloor: MBARI's Ocean Observing System mooring concept

Chaffey, M.; Mellinger, E.; Paúl, Walter

doi:10.1109/oceans.2001.968389

Cited by 20 publications

(8 citation statements)

References 7 publications

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“…In particular, measured currents below the water surface were compared with modeled currents from measured wind speeds. The data sets were taken from the Global Tropical Moored Buoy Array (GTMBA) (McPhaden 2010), the Woods Hole -Hawaii Ocean Time-series Site (WHOTS) (Karl and Lukas 1996), the Stratus mooring, the Monterey Ocean Observing System (MOOS) (Chaffey et al 2001), and the ocean station Papa. Available data with both wind and current measurements is sparse for latitudes beyond 20 • N. The method closely followed the procedure of Alford (2001).…”

Section: Appendix B: Technical Details Of the Hybrid Slab Model Implementationmentioning

confidence: 99%

Estimates of wind power and radiative near-inertial internal wave flux

et al. 2020

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Energy transfer mechanisms between the atmosphere and the deep ocean have been studied for many years. Their importance to the ocean’s energy balance and possible implications on mixing are widely accepted. The slab model by Pollard (Deep-Sea Res Oceanogr Abstr 17(4):795–812, 1970) is a well-established simulation of near-inertial motion and energy inferred through wind-ocean interaction. Such a model is set up with hourly wind forcing from the NCEP-CFSR reanalysis that allows computations up to high latitudes without loss of resonance. Augmenting the one-dimensional model with the horizontal divergence of the near-inertial current field leads to direct estimates of energy transfer spectra of internal wave radiation from the mixed layer base into the ocean interior. Calculations using this hybrid model are carried out for the North Atlantic during the years 1989 and 1996, which are associated with positive and negative North Atlantic Oscillation index, respectively. Results indicate a range of meridional regimes with distinct energy transfer ratios. These are interpreted in terms of the mixed layer depth, the buoyancy frequency at the mixed layer base, and the wind field structure. The average ratio of radiated energy fluxes from the mixed layer to near-inertial wind power for both years is approximately 12%. The dependence on the wind structure is supported by simulations of idealized wind stress fronts with variable width and translation speeds.

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Section: Appendix B: Technical Details Of the Hybrid Slab Model Implementationmentioning

confidence: 99%

Estimates of wind power and radiative near-inertial internal wave flux

et al. 2020

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“…For instance, the Hawaii-2 Observatory (H2O) used serial communication and the RS422/232 protocol for a data path between junction box systems and underwater equipment in the local seafloor observatory (Petitt et al 2002). In contrast, the Monterey Bay Aquarium Research Institute (MBARI) Ocean Observatory System (MOOS) strives to maintain compatibility with development projects of both portable and cabled observatories in the large oceanographic community (Chaffey et al 2001;Akyidiz et al 2005), and enable remote communication with, on the one hand, observation data that are transmitted sequentially via buoys and satellites until arriving at the shore station for further centralized processing and, on the other hand, junction box subsystems that connect to the backbone cable and transfer data to the shore station through the optic fiber.…”

Section: Remote Communication Developmentmentioning

confidence: 99%

A Study of the Remote Control for the East China Sea Seafloor Observation System

et al. 2012

Journal of Atmospheric and Oceanic Technology

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Seafloor observatories enable long-term, continuous, real-time, weather-independent, and multidisciplinary scientific observation and research that will promise major breakthroughs in ocean sciences. China has started to establish a seafloor observation system in the East China Sea (ECSSOS), and the purpose of this paper is to describe the remote control for ECSSOS. Technological development in system architecture and remote communication was first performed in this paper. Based on this work, an overall framework for the remote control solution for ECSSOS was developed, adopting a client-server architecture containing three components, that is, a control center, a shore station, and observatory facilities, as well as two strands of information flow, that is, flow of observation data and flow of control commands. To implement the present solution, operational data flow and the core module were further designed and the corresponding remote control subsystem for ECSSOS was developed against all design specifications. This backbone system has been put into operation in China's first seafloor observatory in 2009, and in this paper the practical performance is evaluated addressing both the general descriptions and results from case studies. Given the successful trial in the Xiaoqushan seafloor observatory, the remote control solution proposed in this paper could be a useful reference implementation to the following construction phases of ECSSOS.

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“…The MBARI Ocean Observatory System (MOOS) prototype in Refs (Chaffey et al, 2001;Chaffey et al, 2005;Hamilton and Chaffey, 2005). use an EOM cable to deliver power and communication to seafloor instruments, and it can be deployed in the deep ocean at depths reaching 4000 m. The system includes a 2.3-m-diameter buoy, an ocean benthic platform, and an EOM cable.…”

Section: Introductionmentioning

confidence: 99%

Ocean observation system design of mooring buoy and benthic node with electro-optical-mechanical cable

Zhang

Tian²,

Zhou³

2022

Front. Mar. Sci.

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We designed a hybrid system named Mooring Buoys Observation System with Benthic Electro-optical-mechanical Cable (MBOSBC) for long-term seafloor and sea surface multi-parameter ocean observation. The electro-optical-mechanical (EOM) cable connects a sea surface buoy and a seafloor junction box so as to establish a transmission link of information and power between the sea surface and the seafloor. The EOM cable also plays the role of mooring tether to the MBOSBC and has to withstand the rigorous marine environment—experiencing mooring loads under complex marine environmental conditions for long periods of time. The data transmission of the system includes the EOM, satellite communication, wireless radio, and acoustic communication. The system power is generated by a wind turbine and solar panels and is transmitted to the seafloor junction box. An acoustic communication instrument is used to gather the sample data from other benthic nodes, such as seafloor landers, AUVs, and underwater gliders. MBOSBC is designed to operate from shallow water to deep sea, and to simultaneously monitor sea surface hydrology, meteorology, and water quality, as well as benthic temperature, pressure, salinity, currents, and seafloor video. We provide the MBOSBC architecture design, including the mechanical design, control, power, data transmission, and EOM cable. Finally, we describe the launch and recovery process of MBOSBC, as well as experimental results.

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Communications and power to the seafloor: MBARI's Ocean Observing System mooring concept

Cited by 20 publications

References 7 publications

Estimates of wind power and radiative near-inertial internal wave flux

Estimates of wind power and radiative near-inertial internal wave flux

A Study of the Remote Control for the East China Sea Seafloor Observation System

Ocean observation system design of mooring buoy and benthic node with electro-optical-mechanical cable

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