UN-SPIDER's Regional Support Office in Colombia IGAC (Agustin Codazzi Geographic Institute) is currently working on elaborating approaches of using remote sensing and GIS for monitoring soil erosion. Reducing land degradation is a major issue for the environment and sustainable development in the XXI century. Erosion is the main cause for the degradation of soils and rock in Colombia.
In February 2013, the Agustín Codazzi Geographic Institute in Colombia, host of a UN-SPIDER Regional Support Office, launched a new web site allowing access to the National Bank of Images of Colombia (BNI): http://www.bni.gov.co/portal/public/classic/
UN-SPIDER's Regional Support Office in Colombia, the Agustin Codazzi Geographic Institute (IGAC), is currently researching automatic flooded area extraction. The experts are implementing the Adaboost algorithm, which is a change detection procedure. This algorithm consists in creating a strong classifier that is built from a small group of weak classifiers. IGAC's approach uses the medium, mean and variance filters, each of these calculated using three different windows sizes: 3x3, 5x5, and 7x7.
Colombia is exposed to a variety of hazards including earthquakes, landslides, debris flows, volcanic eruptions, floods and droughts. This Expert Mission was conducted with the aim of visiting several Government agencies, to hold discussions with the Colombian Space Commission on the establishment of a regional support office in Colombia and to establish better links with the Risk Management Secretariat.
Wed, 14/04/2010 to Sat, 17/04/2010
IGAC, INGEOMINAS, DPAE
Juan Carlos Villagran de Leon, UN-SPIDER
The mission included visits to the Risk Management Secretariat, the Colombian Space Commission, the Agustín Codazzi Geographical Institute (IGAC), the Institute for Hydrology, Meteorology, and Environment Studies (IDEAM), the seismological and volcanological Observatory of the National Research Institute of Geological Mining (INGEOMINAS - today Colombian Geological Service) and the Department of Prevention and Emergency of the District of Bogotá (DPAE - today FOPAE).
To mission allowed UN-SPIDER to advance discussions with IGAC, which is serving as Executive Secretariat to the Colombian Space Commission, regarding the establishment of a Regional Support Office to be operated by IGAC. The mission was also used to establish contact with other government agencies in Colombia that focus their efforts on disaster-risk management and emergencyresponse, as well as to make them aware of the UN-SPIDER programme, its activities and the type of technical advisory support it provides.
The Agustin Codazzi Geographic Institute (IGAC), host of UN-SPIDER's Regional Support Office in Colombia, conducted a case study to identify flooded areas in Colombia during the maximum rainfall period of the years 2010-2012.
The Colombian Agustin Codazzi Geographic Institute - IGAC and their Center of Research and Development of Geographic Information – CIAF, recently did a series of projects based on risk management. One of those was focused on indentifying zones in the process of decertification using optical remote sensing in the Andean dry region of Villa de Leyva (Boyacá), Colombia.
On June 5th, 2012, the Geographic Institute “Agustin Codazzi” (IGAC) was officially registered as member of the Open Geospatial Consortium (OGC). IGAC acts also as the Colombian SpatialData Infrastructure (ICDE) coordinator, and is therefore well aware of the importance of participating in the construction of standards and technical guidelines to ensure geographic information interoperability.