scholarly journals KAZAKHSTAN

Author(s):  
N. Neverova ◽  
N. Mikhailova ◽  
Inna Sokolova

In 2013, seismic monitoring in Kazakhstan was conducted by two organizations: the Seismological Experience-Methodical expedition of the Ministry of Education and Science of the Republic of Kazakhstan (SEME), and the Institute of Geophysical Research of the Ministry of Energy of the Republic of Kazakhstan (IGR). The station network consists of three-component stations and seismic arrays. The work presents detailed information on seismic observation networks. The catalogue of seismic events of Kazakhstan is made by da-ta of above mentioned Organizations. It includes 1036 earthquakes with energy class КР=6.6–14.7. The catalog contains several additional sheets with Attachments: Microseismic data on felt earthquakes, parameters of focal mechanisms of 55 earthquakes, information on coordinates of 29 urban areas with felt shakes, parameters of 1123 aftershocks, and two forshocks of Saryzhas (Narynkol) earthquake in the range of energy classes КР=4.5–11.8. Two maps of earthquake epicenters are shown in the paper: for the whole Kazakhstan territory with КР≥8.6 and for Northern Tien Shan territory with КР≥6.6. The largest earthquake of the year was the Saryzhas earthquake that occurred in Northern Tien Shan on January 28, MS=6.0, КР=14.7. The earthquake was felt on the territory of Kazakhstan and China and was followed by numerous aftershocks. For the first day, only its number exceeded 500. It was noted that the total released seismic energy in 2013 exceeded significantly the same parameter of 2012.

Author(s):  
N. Mikhailova ◽  
I. Sokolova ◽  
B. Bekturganova

The article presents the detailed information on seismic observation networks and catalogue of seismic events in Kazakhstan for 2014 made by data of two organizations - Seismological Experience-Methodical expedition of the Ministry of Education and Science of the Republic of Kazakhstan (SEME), and the Institute of Geophysical Research of the Ministry of Energy of the Republic of Kazakhstan (IGR). The catalogue includes 559 earthquakes with energy class КР=6.6–13.6. The largest earthquake of the year occurred on November 14, 2014 at the southern side of the Issyk-Kul Lake, near Kadzhysay settlement. The earthquake magnitude was MPVA=6.2, energy class КР=13.6. The most interesting was the earthquake occurred at aseismic region of Central Kazakhstan near Karaganda on June 21, 2014. The earthquake was recorded by the seismic stations of Kazakhstan and the world (MPVA=5.2, КР=11.7), it was felt in many settlements. The authors suppose that this earthquake is a natural-induced event.


2021 ◽  
Vol 66 (1) ◽  
pp. 89-95
Author(s):  
S. Zh. Kazybayeva ◽  
M. V. Urazaнeva ◽  
A. A. Borisova

The article outlines the ways for the development of horticulture in the Republic of Kazakhstan, provides data on the study of apple, pear, cherry and plum rootstocks. The results of many years of research in order to optimize scion-rootstock combinations suitable for setting up intensive plantings are analyzed. The original plants isolated as a result of such observations should be propagated without disturbing productivity and genetic stability, and mother planting and field repositories should be established with the resulting planting material of the highest quality categories. To obtain basic seedlings, it is necessary, first of all, to use seedlings of the Sievers apple tree (Malus siversi) and the Niedzwetzky apple tree (Malus niedzwetzkyana), growing in the forests of the northern Tien Shan, and for the pear, seedlings of low-growing rootstocks of the East Asian group: Xiang Li, Tszy Li, Yue li, Bai li, Chang bai li, because the seeds of pome crops are free from harmful viruses. Before harvesting stone fruit seeds, it is necessary to test trees, since a harmful viral infection is transmitted with pollen.


Author(s):  
Anna Sayapina ◽  
Sofya Bagaeva ◽  
Isolda Dmitrieva ◽  
Sergey Gorozhantsev

North-Ossetian Division of the Geophysical Survey of the Russian Academy of Sciences (NOD GS RAS) carries out the continuous seismological observations of the central part of the North Caucasus region. The branch's seismological network includes 12 observation points located on the territory of the Republic of North Ossetia-Alania. The paper provides basic information about the places of installation of seismic stations and their equipment, and notes the registration possibilities of the network. The total number of registered seismic events and separately within the administrative territories in 2020 is given. The total released seismic energy is calculated. A comparison of the energy indicator with the previous year is given. The schedule of repeatability is calculated and constructed, which indicates the level of reliability of event registration. The analysis of the earthquakes foci distribution with ref-erence to geotectonic structures is presented on the map of the epicenters of recorded seismic events with an indication of the distribution against the background of the focal zones. Iden-tified and described the swarm sequences of seismic events, which occurred in the territories of the Republics of North Ossetia-Alania and Kabardino-Balkaria, as well as in the Stavropol Territory. The mechanisms of the foci for the three most powerful earthquakes are deter-mined and their stereograms are given. The obtained results will allow us to study the chang-es in the seismic regime of the North Caucasus region more effectively.


Author(s):  
T. Fokina ◽  
D. Safonov ◽  
D. Kostylev ◽  
V. Mikhaylov

A review of the Amur and Primorye, Sakhalin, and the Kuril-Okhotsk region seismicity for 2015 is presented on the basis of data from the regional network of stationary seismic stations of the Sakhalin branch of the Geophysical Survey RAS with the involvement of data from adjacent seismological Russian and foreign agencies, as well as ten stations of the local network operating in the south Sakhalin. Parameters of 1643 seismic events have been determined, 126 of them are explosions. Focal mechanisms were calculated for 62 earthquakes. 48 earthquakes have shown a macroseismic effect. A map of the epicenters is presented, the distribution of the number N of crustal and deep-focus earthquakes by a magnitude, a total seismic energy ∑E for seismically active regions of three regions are given, in comparison with the average parameters N and ∑E for 20012014. For each region, an analysis of the parameters of the seismic regime in 2015 is given in comparison with long-term averages, the maximum and significant seismic events are described. The seismicity of the Priamurye and Primorye, Sakhalin, and the Kuril-Okhotsk region in 2015 can be characterized as a moderate one.


2020 ◽  
Vol 196 ◽  
pp. 02022
Author(s):  
Elena Bataleva ◽  
Ksenia Nepeina

The paper considers experimental data obtained at stationary and regime points of magnetotelluric monitoring on the territory of the Bishkek geodynamic proving ground (Northern Tien Shan). The studies performed indicate the relationship of variations in the electromagnetic and seismic fields, lunar-solar tidal effects, seismic regime with the processes of fracturing. The results of the time-frequency analysis of the response of the geological environment to earthquakes in the electromagnetic field are presented, the features of manifestation depending on the location of the hypo-and epicenters of seismic events and their magnitude are considered. A number of responses in geophysical fields to remote and regional earthquakes of 2010-2020 with an energy class from 8 to 12 and their relationship with the extremes of lunar-solar tidal effects are considered.


2021 ◽  
Vol 254 ◽  
pp. 03004
Author(s):  
Elena Bataleva

The results of geophysical monitoring of seismically hazardous regions are of undoubted interest for studying the deep structure of the lithosphere, regional seismicity, modern geodynamics, etc. The work used experimental material, including the results of magnetotelluric monitoring and the catalogs of the KNET (Kyrgyzstan Telemetered Network), KRNET (Kyrgyz Republic Digital Network) and ISC (International Seismological Center) networks obtained in the seismically active zones of the Bishkek Geodynamic Proving Ground (Northern Tien Shan). The analysis of electromagnetic monitoring results of the Northern Tien Shan seismic generating zone was carried out in a wide frequency range. The data on the parameters of the electromagnetic field of the Earth’s crust in the Northern Tien Shan are generalized and systematized. Based on the analysis of these data, the dependence of the response of seismic events in electromagnetic parameters on the distance of earthquake epicenters was studied. The most likely reason for the occurrence of anomalous changes in the electromagnetic field is the activation of deformation processes during the preparation of strong earthquakes. The results of the time-frequency analysis are presented and the features of manifestation are considered depending on the location of the hypoand epicenters of seismic events and their magnitude. Regularities have been established in the behavior of tipper variations for remote and regional earthquakes for the first quarter of 2016 with an energy class from 6 to 10.


Author(s):  
N. Mikhailova ◽  
I. Sokolova ◽  
B. Bektyurganova

In 2015, the seismic monitoring in Kazakhstan was conducted by two Organizations: Seismological Experience-Methodical Expedition of the Ministry of Education and Science of the Republic of Kazakhstan (SEME), and the Republican State Enterprise Institute of Geophysical Research of the Ministry of Energy of the Republic of Kazakhstan (IGR). The paper presents detailed information on seismic observation networks. The joint catalogue based on the data of two organizations was compiled. It includes 489 earthquakes having energy class KR=6.6–12.2. The largest earthquake occurred on January 20, 2015 near the Semipalatinsk Test Site. The earthquake had magnitude MPVA=5.3, energy class KR=12.2, and was felt in a range of Kazakhstan settlements.


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Atanu Bhattacharya ◽  
Tobias Bolch ◽  
Kriti Mukherjee ◽  
Owen King ◽  
Brian Menounos ◽  
...  

AbstractKnowledge about the long-term response of High Mountain Asian glaciers to climatic variations is paramount because of their important role in sustaining Asian river flow. Here, a satellite-based time series of glacier mass balance for seven climatically different regions across High Mountain Asia since the 1960s shows that glacier mass loss rates have persistently increased at most sites. Regional glacier mass budgets ranged from −0.40 ± 0.07 m w.e.a−1 in Central and Northern Tien Shan to −0.06 ± 0.07 m w.e.a−1 in Eastern Pamir, with considerable temporal and spatial variability. Highest rates of mass loss occurred in Central Himalaya and Northern Tien Shan after 2015 and even in regions where glaciers were previously in balance with climate, such as Eastern Pamir, mass losses prevailed in recent years. An increase in summer temperature explains the long-term trend in mass loss and now appears to drive mass loss even in regions formerly sensitive to both temperature and precipitation.


Sign in / Sign up

Export Citation Format

Share Document