December 29. Earthquake in Tuva, including, and what happened on the night of Wednesday to be associated with the gradual movement of the Indian tectonic plate deep into Eurasia at a rate of 4.3 centimeters per year, which will go on for tens of millions of years, said RIA Novosti head of the laboratory of the Institute of Petroleum Geology and Geophysics, Ivan Kulakov.
According to him, the heterogeneous composition of collision zone — the area of the lithosphere of Asia, in which "drives" India — permanently deformed as a result of forming mountain ranges. These deformations cause mechanical stress in the earth's crust and cause earthquakes. Strong earthquakes can occur anywhere in the conflict zone.
Collision zone of central Asia — the vast territory between the strong are getting closer to each other and the Siberian Indian plates, which are constantly deformed. All southern framing of Siberia — Altai, Western and Eastern Sayan, including Tuva — represents the northern portion of this belt.
Siberian plate in places a little "gear", so while driving Hindustan plate arises not only compression, but also the extension as India plate is moving not frontally, but at an angle. Typical stretching — Baikal and some regions to the west of it. Busingolskoe earthquake, which occurred in one of the valleys of the Eastern Sayan exactly twenty years ago (27 December 1991) on the strength and the same mechanism that has just happened in Tuva.
In mountainous areas, the movement of the lithosphere and small shifts occur constantly, and it is necessary to preserve the mountain on Earth. After all, the speed of their destruction by geological standards so high that no permanent deformation of the lithosphere due to growth they would have long turned to the plains, and that will happen after a traffic stop in India.
Specialist Laboratory of Geodynamics and paleomagnetism Eugene Deev told RIA Novosti that, according to research palaeoseismological, the last 150,000 years in the region of Lake Baikal to the Altai there were earthquakes with a magnitude of at least 6.
He clarified that the active faults cut through the earth's crust to a depth of 70 kilometers and extend from the structures of the Baikal rift zone through the whole Western Sayan to Minusinsk Basin and the Altai Mountains.
The depth of these earthquakes, which occur movement of earth blocks, is about ten miles away, as they are under a plastic rock.
According to the Emergency Situations Ministry, an earthquake of magnitude 6.7 and strength in the midst of up to 9.5 points on the MSK-64 scale occurred on Tuesday evening in the Kaa-Khem district of Tuva, 100 kilometers south-east of Kyzyl at a depth of 10 kilometers. Tremors from 2 to 5 points were felt in the territory of the Republic of Tuva, Khakassia and Altai and Krasnoyarsk and Altai territories, Irkutsk, Tomsk, Kemerovo and Novosibirsk regions.
According Deeva, assess the strength of the earthquake at the epicenter of a 9.5 score highly exaggerated. He noted that the earthquake in Altai September 27, 2003 had a magnitude of 7.3, and the intensity in the epicenter was 8 points.
"With the magnitude 6.5 shaking should be significantly less. Generally evaluate the seismic intensity at the center only after a field study of the deformation of the relief, which, apparently, will take place next summer, "- said the expert.