Type of resources
: Information regarding an avalanche observed in the past. Mapped based on a survey of inhabitants of the area where the phenomenon took place. The boundaries shown are based on the explanations given by the witnesses consulted. Information is usually taken from Avalanche Zones close to inhabited areas where avalanches have historically interfered with human activity. For this reason the majority of the information is found around these zones. They are shown in purple. Cartography often maps only the avalanche arrival zone, as the descriptions usually refer to their extent and the damage caused.
Information regarding an area exposed to an avalanche. Mapped based on analysis of the terrain and of signs that avalanches leave in their path, mainly, in forests. In Avalanche Zones, avalanches occur frequently and are of different sizes. Avalanche Zones have been systematically mapped throughout the region. They are shown in orange. There are two types of Avalanche Zones: zones where avalanches usually follow the same path, shown in orange, and zones where avalanches usually follow different paths, shown in pale orange.
Inventory of defence structures built to reduce the risk of avalanches. Single and lineal structures are documented, such as artificial avalanche release systems, road barriers, breakers, deflection structures, retention nets, screens, wind baffles, deflectors, rigid and flexible barriers, retention walls, reforestation and controlled areas.
Information regarding an avalanche observed recently. Mapped based on direct observation of the event or observation following it. The information is obtained based on the nivometeorological observation network, rescue groups, countryside wardens, mountain guides, and ski and mountain resort personnel. In the event of important episodes and accidents the IGC technicians also gather information. The elements mapped mainly include the extent to which avalanches affect populated areas, roads, ski resorts and people who carry out mountain activities. Data began to be gathered in 1986. It is shown in blue.
The boreholes database is an inventory of subsurface data in Catalonia through the collection of available geological and geotechnical survey information. The surveys are classified into three groups: surveys, penetrometers and trial pits.
3D model of geological surfaces that contains the main stratigraphic surfaces and geological structures of Catalonia, the location of the main exploration drillings and the topographic and bathymetric surface of the model area.
Magnetic anomaly measurements and zoning of the territory according to this at a scale of 1:250,000.
1D/2D geophysical data, obtained through the application of different geophysical methods in different locations in Catalonia, consisting of the measurement of different physical parameters of the subsoil to obtain information on the behavior of its materials and its structure throughout the territory. Specifically, this set of information includes data, profiles and models resulting from the application of the following geophysical techniques: Magnetotelluric (MT); Electrical Tomography (ERT); Vertical electric sounding (SEV); Seismic refraction Survey (SRA); Seismic reflection survey (SRX); Surface wave analysis (MASW); H/V spectral quotient; Passive seismic array (ARRAY); Geophysical testing in wells.
Synthesis of the hydrogeological macrounits into which the territory can be divided, called hydrogeological areas, and classification of the formations of the Geological Map of Catalonia 1:250,000 according to their lithological characteristics, type of porosity and consolidation.
Physical properties and composition of geologic materials (rocks and sediments), their structure and their age as depicted in the Geological map 1:250,000, as well as geomorphological features, boreholes and hydrogeological units of Catalonia. This data set is conforming to the technical specifications of INSPIRE Geology (and Hydrogeology).