19.12.11.Nuzhna a seismological station in Khujand? In Khujand, there are no seismic stations, but after the city has once again shaken, the press reported on what strength earthquake.
This begs the question of how in the absence of Khujand seismic sensors can calculate the number of points of tremors?
Head of public arts organization "Sughd Nav Ovar" Numonhon Hasanov (Khujand), which specifically deal with this issue, said that he had not found any evidence of the existence of seismic stations in Khujand. Not shed light on this, and surveys of employees of relevant agencies, including those involved in natural disaster relief. According to Hasanov, seismic city needed because Khujand is located on the fault line of soil.
This line is clearly marked on the colored geological map production in 1977. The map shows the soil, which faces the city and districts of Sughd. It marked the fault that runs through, then a Leninabad and then goes to the Ferghana Valley. There is still a second break, going through the area and Spitamenskiy Zafarabad. Hasanov said that because of these faults were observed, and will be observed seismic activity, familiar to people since ancient times.
The famous Japanese researcher earthquakes Kieo Mogi believes that in recent years, scientists have come to believe that earthquakes occur when the Earth's crust and upper mantle is constantly exposed to the vast field of forces. In cortical areas weakened suddenly cracks, with a single pulse of the stresses and strains are released and are excited seismic waves. Earthquakes occur at great depths below the surface, where the pressure is very high. Scientists say that, knowing this, we can make predictions on earthquakes. But also necessary instruments seismic, according to testimony that could have been done a long-term analysis. Experience shows that the predictions of these phenomena can reduce the damage done by the nature of all living things, as well as national economies. Therefore, in every Japanese city, a large enterprise, the university is working around the clock apparatus for measuring vibrations of the crust.
According to Hasanov, in Sughd, sprawling in an area of 25,000 square kilometers, there are many mines, tunnels, waterworks, high-rise buildings. Everyone remembers the great earthquake of 1985, with the epicenter in Kayrakum. Even after that, in Sughd not built a single seismic station.
"According to my information, the nearest stations are located in Tashkent, 175 kilometers from Khujand. There is a station in Dushanbe, which is 360 kilometers from the regional center. Thus, while the vibrations reach these stations, significantly distorted information that can not talk about the exact force of the earthquake that occurred in Khujand. Is the Law of the Republic of Tajikistan "On information" from 10. 05. 2002. This document requires the executive authorities of the timely and accurately inform the public about the natural phenomena, including the fluctuations of the Earth's crust. Because in Sughd are no seismic stations, we have proposed the regional administration to build a station in Khujand and equip it with the equipment. Khujand city administration supported our idea. We were made aware that the availability of funds, the construction of such a facility will be included in the plan for 2012. And we were asked to develop a business plan and ask for money from some international organizations ", — said Hasanov.
He took hold of it, after having studied the subject. It was found that for equipment seismic enough to buy at least one receptionist seismic signals "Delta-03". It is designed for the automatic registration of seismic signals from natural and artificial sources of seismic vibrations, including regional seismic and microseismiczoning.
In addition, the recorder is designed for use as a permanent seismological station with registration data on a removable Flash-drive large capacity and data transfer to a PC for analysis and recording in real time.
Besides the construction seismic Hasanov also offers our parliamentarians to draft a law "On the seismology and seismic service" does not yet exist in Tajikistan.
P.S. Meanwhile, on November 10 of this year, the German Foreign Office as a technical aid handed over to representatives of the Institute of Seismology of the Academy of Sciences of Uzbekistan set of seismological equipment. According ANONS. Uz, the equipment consists of three modern digital seismic stations with software processing of seismic data. Since the installation of the German equipment seismic station "Tashkent" is connected to the international network of seismic stations in Central Asia — CAREMON, and the station "Tashkent" will send / receive seismic data from across Central Asia and the global earthquake data in real time.
Author: Bakhtiar VALIEV
Source: Tajikistan News-NA «Asia-Plus»