Wave and Tidal Monitoring Articles

  • Determination of Flow Rates in part-filled Applications using the Radar Method

    Introduction The radar measurement method plays an increasingly important role in the water and wastewater field. This is particularly reflected by the "Metering outside of the medium" trend. Flow measurement using radar which enables contactless measurements thus becomes a major focal point. It features a wide range of applications and hence is useful as permanent measurement system for ...


    By NIVUS GmbH

  • Modified Sine Wave Inverters vs Pure Sine Wave Inverters

    Most everyday appliances and commercial tools run on AC power. This is fine if you’re connecting the device to a wall outlet that provides AC power. But what if you want to use power from a DC source, like a solar-powered generator or a car battery? In such cases, individuals need to use an inverter – a device that converts DC power to AC power. There are several types of ...


    By Larson Electronics LLC

  • Zhenjiang Dantu District Jiangxin application case - Case study

    project background :By the CCCC Shanghai airlines courtyard entrusted, Surveying and mapping profile per 50 meters for 4 kilometers north gulf and Extension of 50 meters area of Zhenjiang Dantu District Jiangxin. Equipment: ME70 Fully automatic Surveying and mapping unmanned ship、ODOM single wave Beam echo sounder ...


    By Oceanalpha Co., Ltd.

  • Flood modeling and mitigation measures in an Urban Environment –Victoria, Australia - Case Study

    Abstract Accurate prediction of flood extents in urban catchments is extremely difficult without having a 1d/2d integrated modeling approach. The integrated flood modeling is becoming popular and a new benchmark for urban flood risk management studies. City of Glen Eira in Victoria, Australia is a developed metropolitan municipality. The council is responsible for the management ...


    By XP Solutions

  • Integrating Solar Lights with Motion Sensors

    Solar powered motion sensor lights are effective security accessories for remote locations that experience sufficient amounts of sunlight throughout the day. The units offer seamless installation, require minimal maintenance and remain operational without electrical support. Locations without dependable access to the grid may find solar security lights useful in maintaining illumination at night. ...


    By Larson Electronics LLC

  • Determining the Right Cable Length and Output for a Sensor

    If you’re monitoring a bridge or automating a machine, a high precision sensor is a great solution, but it’s no good if the output signal can’t reach the data logger. Depending on what you need to measure and what environment you’re in, determining how long your cable must run can be crucial. High precision sensors offer three common output types: analog, digital and ...


    By Jewell Instruments LLC

  • Case study - New monitoring network for Scottish ports

    In the past, the ferries operating off the west coast of Scotland would have to sail to port to assess weather and tidal conditions would allow them to berth alongside the pier.  In efforts to save time, fuel and costs, the Caledonian Maritime Assets Limited (CMAL), which owns many of the ferries, ports and harbors in the region, decided to install 15  tide and weather stations, using ...


    By The OTT Hydromet Group

  • Acoustic camera and beampattern

    Abstract—The wavenumber-frequency response of an array describes the response to an arbitrary plane wave both in time and space. When the input consists of a single monochromatic plane wave, the response of the array is referred to as the array pattern or beampattern. Through the design of the array our goal is to have a directivity of the array as high as possible in a given direction, ...


    By Norsonic AS

  • An alternative method for estimating total impervious area in catchments using high-resolution colour aerial photography

    Estimation of total impervious area (TIA) is a pre-requisite for ecohydrological research to allow for a direct prediction on stream ecosystem health within catchments. This paper presents an alternative to using multi-spectral imagery for estimating TIA at a catchment scale, by using high-resolution colour aerial photography. The method was applied to a number of catchments in South East ...


    By IWA Publishing

  • Most UK coastal flooding caused by moderate, not extreme storms

    Scientists at the NOC and the University of Southampton have found that the majority of instances of coastal flooding around the United Kingdom in the last 100 years have been due to moderate storm events combined with high spring tides, rather than extreme storms. Researchers have undertaken one of the most detailed assessments of extreme sea level and coastal flooding ever carried out ...

  • WorldWaves wave energy resource assessments from the deep ocean to the coast

    Abstract WorldWaves is a global wave and wind climate package developed through EU and industry sponsorship over many years. The offshore data incorporates global hindcast and operational wave and wind data from ECMWF, validated and calibrated with independent satellite and buoy data worldwide. These data, which may comprise full directional wave spectra time series, are used as ...


    By Fugro OCEANOR AS

  • Optimized Pipediver Platform Making Waves As Advanced Condition Assessment Tool For Metallic Pipes

    Pure Technologies (Pure) never says no to an engineering challenge. If a client has a particular pipeline assessment or monitoring challenge to overcome in order to make a rehabilitation decision, we’ll do whatever it takes to help ...


    By Pure Technologies

  • Estuary salinity prediction using a coupled GA-SVM model: a case study of the Min River Estuary, China

    Estuary salinity predictions can help to improve water safety in coastal areas. Coupled genetic algorithm-support vector machine (GA-SVM) models, which adopt a GA to optimize the SVM parameters, have been successfully applied in some research fields. In light of previous research findings, an application of a GA-SVM model for tidal estuary salinity prediction is proposed in this paper. The ...


    By IWA Publishing

  • Analyzing the turbulent flow on steep open channels

    In channels with steep slopes, the flow is supercritical and the formation of roll waves is expected. In order to evaluate the flow behaviors in steep open channels, the Azad dam spillway is simulated numerically and its flow characteristics are compared with the physical model tests. In this study, the hydraulic variables including hydraulic depth and water surface profile are studied along ...


    By IWA Publishing

  • Port of London Authority Tidal Monitoring System - POLATIDE 5: High Level - Case Study

    Background: Valeport recently worked with marine data specialists, Oceanwise, to design and deliver a complete tidal monitoring system for the Port of London Authority (POLA), please read on to find out more about the system referred to as ‘POLATIDE 5’. Introduction: Valeport and OceanWise ...


    By Valeport Ltd

  • Coastal aquifer hydrodynamics and salinity in response to the tide: case study in Lisbon, Portugal

    The variability in dynamics and salinity of the coastal alluvial aquifer on which the city of Lisbon is located was evaluated. The evaluation was based on the analysis of level and groundwater electrical conductivity fluctuations depending on the tide in the Tagus River. The results obtained made it possible to recognize three sectors. First, a littoral sector where the variations in level and ...


    By IWA Publishing

  • Helplessly exposed to nature? How lightning storms can be measured

    Each day, there occur about 1,000 thunderstorms with 4-10 million lightning bolts worldwide. In average, 700 people per year are hit by such light discharges, of which 75% of the hits result in long-term damages. Between three and seven cases end fatal. The risk is particularly high in the open field and is fortunately decreasing. The reason for this is that we stay more often inside in cars and ...

  • ANFIS and ANN models for the estimation of wind and wave-induced current velocities at Joeutsu-Ogata coast

    In this study, the adaptive network-based fuzzy inference system (ANFIS) and artificial neural network (ANN) were employed to estimate the wind- and wave-induced coastal current velocities. The collected data at the Joeutsu-Ogata coast of the Japan Sea were used to develop the models. In the models, significant wave height, wave period, wind direction, water depth, incident wave angle, and ...


    By IWA Publishing

  • Can software save salt marshes?

    Computer models that help oceanside cities plan for their future also hold hope for a threatened coastal ecosystem. It’s a mild and sunny summer day on the tidal salt marshes at Barn Island Wildlife Management Area, which sits across Little Narragansett bay from ...


    By Ensia

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