tide analysis Articles

  • Turning the tide: informal institutional change in water reuse

    This paper examines the impact of public opinion, time, and the ‘yuck’ factor in influencing the formation of water reuse norms based on an analysis of newspaper content observed in two locations: Singapore and Queensland, Australia. A simple regression analysis shows that time and the ‘yuck’ factor were significant factors in norm formation but, surprisingly, public opinion was not found to be a ...


    By IWA Publishing

  • 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

  • Riding the Tide of Global and European Environmental Regulations - Best Practices of Global Companies Responding to Global and European Environmental Regulations

    Abstract This paper presents best practices of global companies on how they monitor, measure, respond and manage risks arising from global and European environmental regulations. This paper will begin with a review of the development and trends of international and European environmental regulations that have had an impact on production and international trade between 2000 and 2005. It will ...

  • Efficient joint probability analysis of flood risk

    Flood attributes such as the water level may depend on multiple forcing variables that arise from common meteorological conditions. To correctly estimate flood risk in these situations, it is necessary to account for the joint probability distribution of all the relevant forcing variables. An example of a joint probability approach is the design variable method, which focuses on the extremes of ...


    By IWA Publishing

  • Asia Analysis: Battling climate impacts in low-lying Maldives

    Going carbon neutral and protecting marine environment are key to fighting climate change in the tiny island nation, says Nalaka Gunawardene. ‘Raise your voice, not the sea level’ is the theme for this year’s World Environment Day, which falls on 5 June. The theme resonates with the United Nations designating 2014 as the International Year of Small Island Developing ...


    By SciDev.Net

  • Using probabilities of enterococci exceedance and logistic regression to evaluate long term weekly beach monitoring data

    Recreational water quality surveillance involves comparing bacterial levels to set threshold values to determine beach closure. Bacterial levels can be predicted through models which are traditionally based upon multiple linear regression. The objective of this study was to evaluate exceedance probabilities, as opposed to bacterial levels, as an alternate method to express beach risk. Data ...


    By IWA Publishing

  • 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

  • On storm surges induced by the Bora wind in the Lagoon of Venice

    It is well known that the hydrodynamics of the Venice Lagoon is strongly dependent upon both tides and prevalent wind regimes, namely the Sirocco and the local wind Bora. However, while the effect of the Sirocco on the sea level has been an subject of a large number of experimental and theoretical studies because of its dramatic impact on Venice, less attention has been paid to the effect on the ...


    By Inderscience Publishers

  • Stevens Equipment Records Historical Information During Tsunami

    One of the longest lived products in water resource monitoring has been the Stevens’ chart recorder. In fact, the chart recorder, originally invented by Stevens’ founder and namesake J.C. Stevens in 1911, is the product that established Stevens’ leadership in the water monitoring business.  It’s no surprise then that some of these chart recorders have had long service lives and have recorded ...

  • The Power of the Moon

    The influence the moon has on life on earth is disputed. However, during an assignment in Southeast Asia, vibration experts from Sulzer were able to clearly confirm that the moon can even affect pumps. With its broad expertise, the Sulzer team was able to solve an unusual case of vibration. Southeast Asia is a key exporter of LNG (liquefied natural gas) to global markets, and it is ...


    By Sulzer Management Ltd

  • Problem Solving with InfoWorks RS 3: Analyzing Saline Intrusion

    This is the third in a series of articles on InfoWorks RS, Wallingford Software’s integrated modeling solution for river systems. The series explains how InfoWorks RS can address specific problems that face the authorities around the world that are responsible for managing rivers.  The capabilities of InfoWorks RS have been greatly expanded since its original development as a flood modeling ...


    By Innovyze

  • Daily measures of microbes and human health at a non-point source marine beach

    Studies evaluating the relationship between microbes and human health at non-point source beaches are necessary for establishing criteria which would protect public health while minimizing economic burdens. The objective of this study was to evaluate water quality and daily cumulative health effects (gastrointestinal, skin, and respiratory illnesses) for bathers at a non-point source subtropical ...


    By IWA Publishing

  • Modeling the Configuration of Breaches to Flood Defenses

    Introduction Engineers are nowadays expected to not only be skilled in technical matters, preparing calculations and designs, but also to know far more about risk analysis than ever before. In almost all aspects of engineering, risk analyses are now commonplace, with many of the design codes used based on statistical analyses. In the fields of river and coastal engineering it is nowadays expected ...


    By Innovyze

  • Use of Fecal Steroids To Infer the Sources of Fecal Indicator Bacteria in the Lower Santa Ana River Watershed, California: Sewage Is Unlikely a Significant Source

    The Santa Ana River (SAR), CA and adjacent wetlands have been identified as potential sources of fecal indicator bacteria (FIB) to the surf zone at Huntington Beach, CA. A suite of fecal steroids, including ...

  • ACO StormTank’s structural performance meets highways authority standards on prestigious south coast development

    By providing a detailed analysis of its installed performance, ACO Water Management's cellular attenuation system, ACO StormTank, has been selected to provide surface water storage at Centenary Quay - Southampton's new landmark regeneration project. A key component of a sustainable drainage system serving the site's car parking and footway areas, the StormTank proposal, which positioned the tank ...


    By ACO Group

  • Coastal Capital: Ecosystem Valuation for Decision Making in the Caribbean

    Executive Summary Tropical coastal ecosystems—including coral reefs, mangroves, beaches, and seagrasses—provide a range of valuable goods and services to people and economies across the Caribbean. These ecosystems contribute to tourism, fisheries, shoreline protection, and more. However, despite their importance, coastal ecosystems are under threat from numerous human ...

  • Keeping quiet about DCNS

    DCNS, one of Europe’s leading naval defence groups and contractor for integrated warships and systems, is a dedicated user of Brüel & Kjær sound and vibration solutions. This article, written with the support of DCNS, illustrate show PULSE™ is playing a central role at key DCNS operation centres in Northern France; helping with design, maintenance, acceptance testing ...

  • Cultural world heritage threatened by climate change

    From the Statue of Liberty in New York to the Tower of London or the Sydney Opera House – sea-level rise not only affects settlement areas for large parts of the world population but also numerous sites of the UNESCO World Heritage. This is shown in a new study by Ben Marzeion from the University of Innsbruck and Anders Levermann from the Potsdam Institute for Climate Impact Research. ...

  • Can big data save the last of India’s wild tigers?

    Analyzing 25,000 individual observations, wildlife managers find clues to help stop poachers in their tracks. Traveling in small, nomadic groups, carrying knives, axes and steel traps, tiger poachers in India have long held advantages over those trying to protect the big cats. The poachers, motivated mainly by demand for tiger bones used in traditional ...


    By Ensia

  • Changing the Business Climate in 2015

    The business of climate change has changed. Six years ago, when an international climate treaty in Copenhagen seemed distinctly possible, there was still a discernible gap between the concept of a low-carbon global economy and the capital market’s ability to deliver it. Nascent and costly clean energy technologies, skepticism of climate science and a still deeply-embedded reliance ...


    By Ceres

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