English
Български 
Structure and Activities
The Department of Geophysics consists of three sections: Atmospheric Physics, Physics of Ionosphere and Earth Magnetism. Every section is working on different subject area of the main research and applied directions at NIGGG.
Section “Physics of Ionosphere”
Section “Atmospheric Physics”
Main research areas:
- Atmospheric dynamics;
- Physics of atmospheric boundary layer;
- Mesoscale modeling of the atmospheric processes;
- Air pollution;
- Atmospheric microphysics and aerosol.
In recent years, research and development activities are increasingly orientated to environmental issues – different aspects of air pollution, chemical weather forecasting, local climate and its change due to anthropogenic influence. Study of the UV radiation, measurements of stratospheric ozone and prediction of ground-level ozone in the country is initiated during the last decade. New directions are studying the potential of alternative energy sources in the country, and atmospheric dynamics and pollution in urban areas and their relation to climate change.
TOP – Structure and Activities – Department “Geophysics”
Section “Physics of Ionosphere”
In the section of Physics of the Ionosphere, scientific studies are conducted to study the processes in the ionosphere and the mechanisms of their impact on the chemical composition, the temperature balance and the radiation properties of the atmosphere.
Main scientific areas and activities:
- empirical modeling of the influence of solar activity on the total electron density in the ionosphere;
- Investigation and modeling of the influence of the geomagnetic field and the cosmic rays on the spatial distribution of O3 in the low stratosphere and the climate;
- Exploration of Ultra Low Frequency Variations of Earth’s Magnetic Field and Atmosphere-Ionosphere-Lithosphere Interactions.
TOP – Structure and Activities – Department “Geophysics”
Section “Earth Magnetism”
Section “Earth magnetism” conducts fundamental an applied scientific research of the contemporary Earth’s magnetic field; solving of reverse magnetic problems and numerical analysis of potential fields; (palaeo)magnetic and environmental magnetic investigations; palaeoclimatic reconstructions for the Pleistocene; archaeomagnetic dating of archaeological sites. National magnetic observatory “Panagyurishte” and Palaeomagnetic Laboratory are affiliated to section “Earth magnetism”.
Main research areas:
- Exploration of distribution of gravitational and geomagnetic non- homogeneities of various type (local, regional or global) in the Earth’s interior;
- Analysis of gravitational and geomagnetic data for the territory of Bulgaria for investigations of borders of tectonic blocks and shear zones;
- Investigations of the constant and variable geomagnetic field; Providing information about geomagnetic storms;
- Palaeoclimatic reconstructions in the geological past through magnetic properties of sedimentary rocks;
- Application of magnetic methods for fast and efficient detection of anthropogenically polluted soils, sediments and urban areas;
- Archaeomagnetic dating of archaeological remains of burnt clay and investigations of the behavior of geomagnetic field in the historical past;
- Determination of equivalent firing temperature of archaeological remains (ceramics; pottery; house destructions).
National magnetic observatory “Panagyurishte”