PositionIT e-News
 
GIS, GPS, surveying and spatial applications in Southern Africa

     Issue 60, October 2014  

No water, but it's "beyond our control"
by Clare van Zwieten, EE Publishers

Clare van ZwietenIt is a national disgrace that parts of Johannesburg, Ekurhuleni and Tshwane experienced water supply disruption in recent weeks, and government's response to this unprecedented situation has been singularly disappointing... (more)
More than surveys and charts from more than hydrographers
by 
Paul Cooper, The Hydrographic Society of America

 

Paul Cooper Today not only is hydrography more than just surveying and charts - hydrography and bathymetry data are also being conducted by more than only hydrographers. In the growth of skills and tools, the job of the hydrographer has also grown and become more complex... (more) 

Tributes to Anthony Paul Marshall - President of PLATO
Compiled by Clare van Zwieten, EE Publishers

 

Paul Marshall It is sad indeed for both the profession and governance structures of our profession to lose a person of Paul's calibre. As a president of PLATO, probably the longest serving, he has represented our profession on many international activities and platforms including the International Federation of Surveyors Working Week meetings and congresses... (more)

A visit to the Saint Helena Island airport project
by Hendrik Hugo, Cape Peninsula University of Technology

 

The St. Helena International Airport construction project represents a historic milestone for one of the most remote islands in the world. Over R3-billion has been allocated for the project... (more

 

This article takes a look at some of the ways in which I and others have screwed up our hydrographic surveys, such as using a bad multibeam mounting, surveying in dynamic conditions without a motion reference unit (MRU), and others... (more)
Hydrographic surveys for the mining environment
by Craig Vorster, Global Vision

 

This article explains how radio controlled unmanned boats work as a survey platform and provides details on the hydro survey system, echo sounder accuracies, the aerial and terrestrial survey data, and how they can contribute to mine safety... (more)

The geospatial scale relationship
by Luncedo Ngcofe, Department of Rural Development and Land Reform

 

The rapid growth of technology has led to diverse ways of geospatial data capture. The application of these different geospatial datasets has triggered the enquiry of the scale relationship of such datasets... (more)
Sharing, aggregating and comparing geological data
by Oliver Raymond, Geoscience Australia 

 

A number of continental and national data models have been developed and used over the years, but their differences pose obstacles to sharing, aggregating and comparing geological data... (more)
Web mapping solution to assess the effect of sea level rise
by Aymen Solyman, Sadat University, Egypt

 

This article presents the methodology of building an integrated web map solution to assess the effect of sea level rise scenarios on the northern coast of Egypt... (more)
Mapping the Grande Cretto
Information from Topcon

 

Following the violent earthquake that hit Valle del Beĺce (Italy) in 1968, the ruins of the old town centre of Gibellina, Sicily, have been compacted inside Alberto Burri's "Grande Cretto". With its extension of 12 ha, it is currently the largest open-space contemporary work of art in the world... (more)

Studying Earth's forests in 3D
Information from NASA  

 

A laser-based instrument being developed for the International Space Station will provide a unique 3D view of Earth's forests, helping to fill in missing information about their role in the carbon cycle. The instrument will be the first to systematically probe the depths of the forests from space... (more)

 

Exxaro's Grootegeluk Mine recently acquired a Trimble MX2 mobile mapping system from Optron, and had a 4 x 4 light delivery vehicle (LDV) customised to facilitate the surveying of its open pit operations and stockpiles... (more)

 

Terrestrial laser scanning (TLS) is not commonly used for forensic investigations in South Africa. Recently two high profile investigations made use of the 3D laser scanning services of an engineering surveying and mapping practice... (more)
Views, comment and opinion

Industry and institute news
Training news
Company and product news
 
 
In this issue...
- No water, but it's "beyond our control"
- More than surveys and charts from more than hydrographers
- Tributes to Anthony Paul Marshall - President of PLATO
- A visit to the Saint Helena Island airport project
- 10 ways to screw up your hydrographic survey
- Hydrographic surveys for the mining environment
- The geospatial scale relationship
- Sharing, aggregating and comparing geological data
- Web mapping solution to assess the effect of sea level rise
- Mapping the Grande Cretto
- Studying Earth's forests in 3D
- Mobile surveying for open pit operations
- Reproduction of accident/crime scenes for forensic investigations
- Views, comment and opinion
- Industry and institute news
- Training news
- Company and product news

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