Note on wave parameters from moored wave buoys

Niclasen, Bárður A.; Simonsen, Knud

doi:10.1016/j.apor.2008.01.003

Cited by 11 publications

(5 citation statements)

References 14 publications

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“…The buoy is instrumented with an accelerometer that registers the rate at which the buoy is rising or falling as it follows the wave pattern. Vertical displacements are then derived from the sampled vertical accelerations (Earle, 1996;Niclasen and Simonsen, 2007). A limited number of waverider buoys also record pitch, roll and accelerations in the horizontal axes to derive directional properties of the incident wave field.…”

Section: Introductionmentioning

confidence: 99%

Assessment of sea wave spectra using a surfaced glider

Álvarez

2015

Deep Sea Research Part I: Oceanographic Research Papers

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Section: Introductionmentioning

confidence: 99%

Assessment of sea wave spectra using a surfaced glider

Álvarez

2015

Deep Sea Research Part I: Oceanographic Research Papers

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“…Although wind load is dynamic, offshore structures respond to them in a nearly static fashion. However, a dynamic analysis of the unit/installation is indicated when the wind field contains energy at frequencies near the natural frequencies of the unit/installation (fixed or moored to the ocean bottom) (Niclasen and Simonsen, 2007). Sustained wind speed is used to determine the global load acting on the unit/installation, and gust speed should be used for the design of individual structural elements.…”

Section: Dynamic Responsementioning

confidence: 99%

Material Selection and Structural Assessment of Offshore Aquaculture Floating Structures for Seaweed Farming

Oladokun

Tee

2023

Preprint

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The materials used for offshore aquaculture floating structures in seaweed farming usually have less durability due to oceanic environmental factors. This affects the production of seaweed and increases the cost of production due to the breakdown of the structures. The floating structure of seaweed farming can be improved by choosing a suitable material based on the material's properties, strength, and safe working load. Studies have shown that high modulus Polyethylene is a very suitable material for offshore structures. Past materials used by farmers are reviewed to assess suitable material for offshore structures and the hydrostatic analysis is carried out to determine the pressure and load that the structures can withstand.

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“…Karachi is a coastal city and the coast can be used to gather useful data out of the waves that can help the local community like fisherman and by this, we can also analyze changes in the climate [2]. The wave data can provide information that may be of use to coastal protection and beach nourishment efforts [3]. Considering these factors in mind, we planned to make a cost-effective data buoy that can provide useful wave data especially in Pakistan where there is minimal research on such topics.…”

Section: Purposementioning

confidence: 99%

Mechanical Design and Fabrication of a Data Buoy

Mir

2023

MATEC Web Conf.

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A data buoy for measuring coastal wave-action has been designed and constructed. The buoy is essentially a 0.6 m diameter sphere that is made of fiber-glass with aluminum, steel and polymer parts. While the overall geometry of the buoy is superficially similar to that of existing commercial spherical buoys (e.g. Wave-Rider by Datawell), the present design is based on a simple robust structure and mass-market electronics. A significant dual-use feature of this design is that the structure is usable as a float in a wave-energy generation device. This is possible due to the essentially isolated central structure and an electronics enclosure that is sealed both from the external environment and from the bulk shell of the buoy. This also allows the electronics to be mounted in an easily- modified, rack configuration that can be removed from the buoy shell. In a wave-energy generation set-up the electronics rack would be removed and the central cylinder will become part of a linear-motion type generator, with at least +/- 25 cm of internal movement available to it that is waterproof (for near surface or shallow immersions). Alternatively, for large wave motions, the buoy can couple to an energy-generating device using flanges that mate with its bolt circle pattern. However, at the moment, the buoy enclosure is dedicated to wave-action measurement, i.e., a data buoy with an onboard inertial measurement unit (IMU) and a radio-link to send real-time data to a receiving unit that can be on a boat or at the seashore. Basic GPS data are also transmitted. This is of interest if the buoy is being deployed in a drifting (un-moored) mode. This paper will only discuss the mechanical design and fabrication of the structure.

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Note on wave parameters from moored wave buoys

Cited by 11 publications

References 14 publications

Assessment of sea wave spectra using a surfaced glider

Assessment of sea wave spectra using a surfaced glider

Material Selection and Structural Assessment of Offshore Aquaculture Floating Structures for Seaweed Farming

Mechanical Design and Fabrication of a Data Buoy

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