Oceans of Colour

Connecting Past and Present
Natural water colour measurements are based on multi- and hyper-spectral measurements performed in the field and from space. A simpler approach to determine the colour of natural waters is by means of the Forel-Ule colour comparator scale. This scale has been applied globally and extensively by oceanographers and limnologists since the 19th century. Colour classification according to the Forel-Ule method, through participatory science, i.e. with the help of the public, as developed within the EU project Citizens’ Observatory for Coast and Ocean Optical Monitoring (Citclops), will facilitate this need by connecting the present and the past. What Gives Colour to... (read more)
2015-05-29 11:14:45

Trends in Hydrography

Taking Lessons from Today's Technical Developments
It’s often a cliché to say that everything offshore has changed since the introduction of GPS, but there have certainly been many changes since back then in the 1980s. The other obvious transformational technology has been computers and computer processing that, like the rest of the world, has totally and radically changed our lives. It didn’t happen immediately of course – no, that would never do in the ultra conservative environment of hydrography and offshore surveying. However, it’s clear when comparing mid-20th century surveying with today that they have totally and fundamentally impacted our projects. Nowadays, such technologies are often taken... (read more)
2016-12-06 02:02:15

Open Standards for ­Interoperable Maritime Data Exchange

What Can We Learn from the Aviation and Defence Domains?
The adoption of open standards for Maritime data exchange is just the start of a long journey. With increased vendor support, a potential reduction in costs, as well as enabling innovation as some of the benefits, implementing open standards such as S-100 and Geography Markup Language (GML) within the Maritime domain is bringing the industry a step closer to truly interoperable data exchange. When it comes to data exchange for the Maritime industry, S-100 is shaping up to be the interoperability stimulus, but it is just the start. S-100 is intended to support a wide variety of hydrographic-related digital data sources,... (read more)
2013-05-23 02:39:41

IHO S-100

IHO Publication 57 (IHO S-57) is the official IHO Transfer Standard for Digital Hydrographic Data, formally adopted in 1992. S-57 was intended to support all types of hydrographic data, the associated technology and different user groups, but adoption has been relatively limited. S-57 has been used almost exclusively for encoding electronic navigational charts (ENCs) for use in electronic chart display and information systems (ECDIS). One of the reasons for this is that S-57 is not a contemporary standard that is widely accepted in the GIS domain.<P> To address this, the IHO hasembarked on the development of a new, more versatile... (read more)
2008-05-15 12:00:00

The New Role of Hydrography in the 21st Century

Evolving from Charts to Geospatial Data
Traditionally, hydrographic data was used mainly for nautical charts. Hydrographic surveys are costly, and data should be used beyond navigation. Some have developed centralised hydrographic databases, but their only purpose is to produce charts. Hydrographic data should be used for other purposes too. Hydrographic data is the foundation for building a maritime data management system, in the framework of a Marine Spatial Data Infrastructure for broader use. Visionary organisations are already evolving their traditional roles and jumping onto the ‘Big Data’ ship and connecting to the World through web services. The use of Hydrographic data is evolving for good. When... (read more)
2014-05-02 02:15:19

Crowdsourcing Enhances Navigation Awareness

Leveraging Technology and Social Media for Intracoastal Waterway Reconnaissance
In this internet age, crowdsourcing is fast providing practical contributions to our understanding of the world around us. Whether it be software developed in an open-source environment, inputs from ‘those in the know’ to create and maintain wiki pages, or the provision of weather and traffic data through the mobile devices we use every day, society as a whole benefits from what we each ‘know’ and the ability to communicate that information with today’s technology. Autonomous crowdsourced bathymetry (CSB) is one of the newest tools in the hydrographer’s toolbox, leveraging the application of 21st century technology and social media, both... (read more)
2014-12-15 02:01:32

Port of Rotterdam – Innovative Hydrography

ENC Production to the Max
The Port of Rotterdam is a leading global port and by far the largest seaport in Europe. The port is situated in the Rhine delta and with its direct connection to Europe’s largest industrial region, the Ruhr area, it is a key entry point to the European market. Understanding the depths throughout the 40km of the port’s waterways is critical to the day-to-day running of the port. Because the Netherlands Hydrographic Office only produces Electronic Navigation Charts (ENCs) for harbour usage, the port investigated the possibility of producing ‘Berthing’ ENCs containing high-density depth data to support decision-making within the port.... (read more)
2017-09-13 10:30:25

A Universal Hydrographic Database

In search of ‘The Holy Grail’
The idea of a Universal Hydrographic Database is well known within the hydrographic community. Years of discussion and technological development have made UHD an attractive goal for those striving to improve the quality of navigation products. As seekers of this ‘Holy Grail’, the authors dare to suggest requirements for such a database and even analyse approaches to implementation. The main task for a HO is, as stated in regulation 9 of SOLAS Chapter V, to provide for safe navigation within its zone of responsibility. All other tasks are just incremental steps toward fulfilling this main objective. They include survey, production... (read more)
2008-01-01 01:00:00

Hydrography for Continental Streamflow Modelling

Water Data Standards Enable New Models and Applications
Land surface hydrography now supports the modelling of continental-scale streamflow at high resolution and in near real time. The US National Hydrography Dataset contains about 2.7 million stream segments averaging 2km in length. This database establishes a national topological network of streams and their drainage areas. The network is now being used in computational models of streamflow that can be run in just 12 minutes for the entire USA, and the approach is also starting to be applied globally. Imagine a continental-scale hydrographic dataset being used for local-scale operational forecasting of streamflow and flooding in near-real-time. This article outlines the surface... (read more)
2016-08-24 04:03:25

Marine Data Accessibility and Use

Following recognition that there could be greater collaboration between government and industry sectors to improve access to marine data and information, a workshop was held to identify current issues and propose how such improvements could be made. Several key recommendations are being taken forward to ensure that plans to establish a national framework for the management of marine data in the UK are being met for all sectors and that the data requirements for a national marine monitoring and assessment strategy are met. This article provides information on existing marine data initiatives, describes the current issues, areas for potential improvements,... (read more)
2008-03-01 12:00:00
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