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Ocean Environmental data is a key component utilized by the United States Coast Guard (USCG) when developing and executing a search and rescue mission. The Search and Rescue Optimal Planning System (SAROPS) became operational with the USCG in 2007 and is the main tool for developing search and rescue mission plans. This tool utilizes environmental data (wind, ocean currents, etc.) to estimate the...
Intensive cultures of shrimps produce more than 10 individuals per square meters with the use of hatchery reared post-larvae and the supply of compounded diets. The paddle wheel aerators are usually installed in the pond to supply oxygen and collect the sludge generated from the excretion of shrimps and the rest of the compounded food. The operation of paddlewheel aerators consume plenty of oil or...
Considerable interests in recent years have been directed towards the study of various mechanical devices to draw up deep ocean water (DOW), particularly the air-lift artificial upwelling devices. However, one of the obstacles which limit their application in open ocean mariculture is the difficulty in estimating the flow rate in the upwelling pipe. Conventionally, the water flow rate in the upwelling...
Underwater object detection has been always issued problems. Acoustic methods are mainly used, however, detection using acoustic methods in shallow sea is difficult problem. Therefore, we carry out preliminary study adopting direct-current (DC) resistivity method, which use constant current as an active source. For the verification of our method, numerical and water tank experiments are conducted...
According to the principle of electric-magnetic-electric transformation relations, the underwater intelligent wireless inductive charging system based on principle of electromagnetic induction, which achieves the effect of wireless charging is proposed in this paper and it is characterized by safety, simple and agility. The details of system's principle, system's working procedure, hardware circuits...
A new multi-frequency HF (MHF) radar based on small circular antenna array is briefly introduced in this paper. For the purpose of reducing the area of receiving array, Radio Ocean Remote Sensing Laboratory of Wuhan University designed a small receiving array, which consists of 7 elements with a diameter of 5 meters, for MHF radar system in 2014. This new MHF radar system, adopting Frequency Modulated...
The phased array HF ocean radar installed at the Port of Rotterdam gives good quality near real-time information on surface currents for port management. This paper examines the potential to infer current profiles from HF radar and wind station data using prior knowledge of the site. It is shown that tidal currents follow a logarithmic boundary layer profile, and the wind-driven currents have an approximately...
Ocean currents are one of the most important factors in marine environment. Ocean currents affect the availability of nutrients, food and the spread of eggs and larvae for marine animals. Besides, the ocean currents are also the main driven forces for sediment transport and coastal processes which are the key factors for the coastal erosion and accretion as well as marine pollution. Thus, analyzing...
HF radar wave data are obtained through an iterative inversion procedure that provides an estimate of the directional spectrum, from which waveheight, period and direction parameters can be derived. The critical data quality requirements for the backscatter spectra, in order to generate reliable wave measurements, are the signal-to-noise levels in the second order regions along with a clear separation...
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