Column: 3D Mobile Mapping

Over the last few years street-level mobile mapping and reality capturing has quietly become one of the most important geospatial mapping technologies. There are already hundreds of mapping vehicles collecting vast amounts of geospatial data. But what we see today is only the start, believes Stephan Nebiker from the University of Applied Sciences and Arts Northwestern Switzerland (FHNW).   In the future, accurate and dense 3D representations of the urban environment along traffic corridors and within buildings will be captured and created fully automatically and upated regularly if not in real-time. These digital realities will serve a multitude of purposes, including... (read more)
2016-07-17 05:10:16

Mapping Liquid Water on Mars

To tie in with NASA’s recent announcement about the discovery of liquid water on Mars, Esri has put together an interactive story map showing the craters and canyons on Mars that reveal evidence of water. Watch animations of the recurring slope lineae (water stains) across four different craters and explore satellite imagery and elevation data for the 'Red Planet'. Using an imaging spectrometer on MRO, researchers detected signatures of hydrated minerals on slopes where mysterious streaks are seen on the Red Planet. These darkish streaks appear to ebb and flow over time. They darken and appear to flow down steep slopes during... (read more)
2015-09-30 11:55:57

African Water Authorities Training EO

Around 30 water authorities from more than 15 African countries gathered in Nairobi, Kenya, from 26 to 30 November, to attend an advanced ESA TIGER training course on utilising Earth Observation technology to overcome water-related problems. The course provided an overview of the different applications of Earth Observation (EO) technology for improving integrated water resource management, with special attention placed on the needs of Africa. European and African experts discussed various topics, such as catchments characterisation, hydrological modelling, water quality and drought forecasting. The training course was organised in collaboration with ITC (International Institute for Geo-Information Science and Earth Observation),... (read more)
2007-12-10 10:21:39

Geoinformation for Water-Related Objects

Web Feature Service (WFS-T)-based Geometry Editing
The Dutch Directorate for Public Works and Water Management, Rijkswaterstaat (RWS) is an organisation scattered over numerous local districts. A Geo-Information Infrastructure (GII) has been implemented to reduce distributed data management whilst maintaining availability of geographical data to local offices. The authors describe user requirements and functionality, illustrating the Information and Communication Technology (ICT) architecture and technical aspects. The existing infrastructure was extended with a web application for the maintenance and development of water-related objects, based on Open Geospatial Consortium (OGC) standards. The infrastructure has made it easier to publish geo-information throughout the organisation and, together with reusing standards, components... (read more)
2007-06-14 12:00:00

Data Modelling for Water Management

UML for Better Communication among Stakeholders
In 2004 the government agency responsible for water management in The Netherlands began a project to create an integrated geo-database for holding all geo-information on water-related objects. The set-up of the geo-database had to be sufficiently flexible for use at different management levels and geo-data had to be accessible using Web services. UML has played an important role in the project: it helps discussions, forcing designers and end-users to be specific. Because of its geographic location in a low-lying delta, water management is of prime import-ance for The Netherlands. Rijkswaterstaat (RWS), the Directorate-General for Public Works and Water Management, is... (read more)
2006-05-22 12:00:00

FORMOSAT-2 Explores Water Resources

A team of EU-funded researchers is drawing on the latest satellite imaging technology to investigate how scarce water resources, used by farmers in arid regions, are. The tool could be used by local authorities to allocate water resources more effectively, or to encourage farmers to alter their farming practices to save more water. The use of satellites in agriculture is not a new phenomenon. GIS allow specialists to visualise and comprehend data in ways that reveal relationships, patterns and trends in the situation on the ground. In this latest study, a team from the French Institute for Research for Development... (read more)
2008-06-09 01:28:41

Lake Oroville Water Elevation Visible from Space

Due to recent and heavy rainfall, the water level of Lake Oroville has drastically increased, reaching a dangerous peak which led to the evacuation of over 100,000 people as a precaution against a dam failure. The Airbus SPOT 6 and SPOT 7 satellites constantly acquire imagery at 1.5m resolution on any point of the Earth, and have captured images of this water-level elevation in Oroville, California, USA, from space. The illustration right shows an image acquired by SPOT on 14 February 2017, which is compared with a previous image (left), acquired by SPOT 6 on 27 June 2016, where the lake banks are... (read more)
2017-02-17 09:23:17

Postgraduate Course Integrated Water Resources Management, Kenya

International Institute for Geo-Information Science and Earth Observation (ITC, The Netherlands) has announced a postgraduate course named Applications of Earth Observation and GIS in Integrated Water Resources Management. The course will provide professionals in the field of Integrated Water Resources Management (IWRM) with practical tools and methods which are in-line with the recent advances in research and development and are directly applicable. Correct data, knowledge of hydrology, and proper modelling are the main requirements for the development of realistic integrated water management plans. The availability of modern data acquisition and analysis tools has greatly increased over the last few years while... (read more)
2007-06-06 10:52:01

ESA's SMOS Helps Understanding Water Cycle

ESA's SMOS satellite formally began operational life this week after its six-month commissioning programme. This mission is now set to provide much-needed global images of soil moisture and ocean salinity to improve our understanding of the water cycle. SMOS employs a novel interferometric radiometer that operates in the L-band microwave range to capture ‘brightness temperature' images. These images are used to produce global maps of soil moisture every three days and maps of ocean salinity averaged over thirty days. By consistently mapping these two variables, SMOS will advance the knowledge of the exchange processes between Earth's surface and atmosphere and... (read more)
2010-05-25 10:29:15
Search Filter