The geographical information system for studying the Earth’s natural disasters (GIS-ENDDB) is focused on the research into the catastrophic events affecting the regional geodynamics of the Earth. Information base of the system contains data on geotectonics, seismic activity of the Earth, heat flows, detailed relief, and anomalies of the gravitational field as well as on the distribution of cosmogenic and volcanogenic structures. To study deep seismogenic structures the deep seismic tomography data and procedures for visualization of these data on the maps and its sections are included into GIS-ENDDB. According to the tomography data, it is revealed that the most typical structural elements at the depths of the upper mantle (reaching depths of up to 400-700 km) is the deep «canals», sometimes coinciding with the channel-like structures of seismicity – «seismic nails». The regular spatial distribution of channels along the perimeter of the W-shaped South Asian structure, other signs of the bilateral symmetry allow one to assume its single geodynamic nature.

Mikheeva Anna Vladlenovna, PhD of Physical and Mathematical Sciences, researcher of the Mathematical Geophysics Problems Laboratory of ICM&MG SB RAS. Prospect Akademika Lavrentjeva, 6, Novosibirsk, 630090, Russia. E-mail: Anna@omzg.sscc.ru.

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