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Forest fires occur for natural and anthropogenic reasons. In the vicinity of settlements, forest fires occur mainly as a result of human activity. The occurrence of a forest fire is characterized by the presence of a person in a forested area (anthropogenic load), the presence of ignition sources and the process of forest fuel ignition. It is important to understand how the anthropogenic load is distributed around the locality and to simulate it using computer technology. The purpose of the work is a numerical stu...

Forest fires damage biogeocenoses. Forest fires affect trees, vegetation and soils. This influence can be both positive and negative. The thermal effect of a forest fire on the soil layer is important. It is necessary to develop mathematical models for understanding the processes of thermal effects of a forest fire on the surface soil layer. Earlier, a simple mathematical model was developed which takes into account the given characteristics of a forest fire and heat transfer in the soil layer by conduction. The p...

Atmospheric-soil measuring complex (ASMC) contains ten-meter mast with five temperature and humidity sensors in the radiation protection at altitudes of 1, 2, 4, 6 and 10 m. In addition, a wind speed, wind direction and total solar radiation sensors are installed on the mast. Also a solar battery and an antenna for a cellular modem are installed on the mast. Near the mast there is a snow cover height sensor and a liquid precipitation sensor on a two-meter tripod. The soil part of the stationary variant for monitor...

In this paper stochastic model is proposed to estimate the probability of forest fire from anthropogenic load. A point source of anthropogenic load is considered. For example, a rural settlement, a camp, an industrial site, which are located in controlled forest-covered areas. Mathematically, the following model can be formulated. Let?s consider circle with radius in the some set. Then the cumulative distribution function (c.d.f.) of ignition near the neighborhood of the point X0 can be defined. Obvious that all p...

Forest fires have an impact on forest stands, atmosphere and soils in forested areas. Many authors have established that the thermal effect on the near-surface layer of soil can have a negative impact both on the soil itself and the further development of grass stands and forest stands. It is necessary to develop systems for geoinformation monitoring, taking into account the thermophysical processes in the soil layer at the level of mathematical models. It is necessary to conduct experiments to verify such models....

Thunderstorm activity is the main natural cause of forest fires occurrence. Lightning discharges are divided into cloud-to-ground and cloud-to-cloud. The higher the current, the higher the probability of fire in the forest. Geographic information systems are a convenient and multifunctional means of visualization and geospatial data analysis, including the level of forest fire danger. It is necessary to design the structure and information flows in such a GIS system. The development of such a GIS system is carried...

Anthropogenic load is the main cause of forest fires near settlements and various objects of transport or industrial infrastructure. It is proposed to mark out a point source of anthropogenic load. Similarity in the processes of propagation of anthropogenic load and diffusion heat transfer was used for simulations. The quantitative characteristic of the anthropogenic load is the virtual (possible) number of forest fires in a controlled forest-covered area. A one-dimensional mathematical model for estimating the sp...