São José dos Campos, January 27, 2015-The Mineral Resources Research Company -CPRM part of the National Plan for Risk Management and Disaster Response of the Federal Government, having as one of its tasks to completion of the mapping of areas increased risk of natural disasters, especially floods and landslides in 821 municipalities across the country in order to avoid tragedies like what happened in 2008 in Santa Catarina state, and in 2011 in the mountainous region of the Rio de Janeiro state, when temporal destroyed cities and affected thousands of people.
For this, the CPRM team adopts classical methods of geological and geotechnical mapping and geological risks with the wide use of the ArcGIS platform. The project started in 2011 with 29 cities mapped and reached the end of 2014 a total of 857 municipalities, exceeding the target set by the Federal Government. Through the ArcGIS platform, CPRM gathers data collected by the field teams in all regions of the country, on risk sectors identified in each municipality, involving slope, features indicative of breaks, soil analysis and rock, rainfall, population density and location of houses and even high-resolution satellite images, in a single database that can be accessed in the form of map to better understanding of the safety authorities and disaster prevention.
This initiative aims to feed the data integration system Cemaden (National Center for Monitoring and Alerts Natural Disasters) and Cenad (National Center for Disaster Management) with georeferenced maps with attributes of database in shape-file format, between other products, to permit the sending of notices and warnings about the risks, especially those involving landslides and floods caused by heavy rains, and streamline decision-making of municipalities to avoid the worst.
"The traditional cartographic methods of preparation of risk maps previously performed were slower, hindering quick action and also achieve the goals. Thus, the methodology integrating GIS to field mapping methods enabled end-products were generated quickly, and today we can to communicate in real time regardless of location field teams through mobile electronic devices with ArcGIS already built, "says Jorge Pimentel, coordinator of geological and geotechnical mapping of CPRM.
With the use of GIS, CPRM has achieved greater speed in the exchange of information between field teams and creating maps more accurately, being able to access important and complete data, all in real time. In addition to allowing the integration of information from other organs such as the Cemaden and Cenad, which with the help of weather radar can send warnings to evacuation of the population. "This capability is very important, because it allowed the expansion of the integration of the various government entities that are joining efforts for the prevention of natural disasters that occur in Brazil," says Pimentel.
Source: Newsletter Imagem