scholarly journals AZERBAIJAN

2020 ◽  
pp. 49-60
Author(s):  
G. Etirmishli ◽  
R. Abdullaeva ◽  
S. Ismailova ◽  
S. Kazymova
Keyword(s):  
Seismic Event ◽  
Background Level ◽  
Seismic Energy ◽  
Earthquake Magnitude ◽  
Energy Class ◽  
Earthquake Catalog ◽  
Local Magnitude ◽  
Seismic Stations ◽  
The Republic

In 2014, a network of 35 digital seismic stations of Azerbaijan continued to operate unchanged, while significant changes occurred in the work of analog stations – they were completely stopped in May 2014. The set of parameters determined for estimation of the earthquake magnitude decreased – determination of MPVA magnitude and KP energy class ceased. Only the local magnitude ML Azr is measured, which is converted then into energy class K. The total number of earthquakes recorded by Azerbaijan network of seismic stations amounted to 5754, but the Azerbaijan earthquake catalog published in the Appendix to this article contains 135 of them with ML Azr3.0 only. An increase in seismic activity in the study area was noted. This is expressed in increase in 2014 of number of representative earthquakes (K≥9) compared with both their number in 2013 and the average annual value for 1993–2013. The seismic energy released in 2014, after its reduced values in 2013, approached the background level. In 2014, the most significant seismic event on the territory of the Republic was the February 10 earthquake with ML Azr=5.7 and intensity in the epicenter of I0=6.

scholarly journals SEISMICITY of AZERBAIJAN and ADJACENT TERRITORIES in 2015

2021 ◽  
pp. 50-59
Author(s):  
G. Etirmishli ◽  
R. Abdullaeva ◽  
S. Ismailova ◽  
S. Kazimova
Keyword(s):  
Seismic Event ◽  
Background Level ◽  
Seismic Energy ◽  
Seismic Intensity ◽  
Earthquake Magnitude ◽  
Local Magnitude ◽  
The Republic ◽  
Catalogue Of Earthquakes

In 2015, the network of Azerbaijan seismic stations included 35 digital stations, which continued to operate unchanged. The set of parameters determined for estimating the earthquake magnitude has decreased – determination of the MPVA magnitude and КР energy class has ceased. Only the local magnitude MLАзр was measured. The total number of earthquakes recorded by the Azerbaijan network of stations in 2015 amounted to 6419, however, only 128 of them with MLАзр3.0 are given in the catalogue of earthquakes of Azerbaijan published in the Appendix to this article. Seismic activity in the study area remained unchanged. The released seismic energy changed insignificantly compared to its value in 2014 and was close to the background level for the period 1993–2014. The increase in the number of earthquakes of the representative level (K≥8.6, MLАзр≥2.8) in comparison with the long-term average annual value is due to aftershocks of earthquakes on January 26 with MLАзр=4.9, June 3 with MLАзр=4.6, and September 4 with MLАзр=5.9. The 2015 most significant seismic event on the territory of the Republic was the earthquake on September 4 with MLАзр=5.9 and seismic intensity at the epicenter of I0=7.

scholarly journals AZERBAIJAN

2019 ◽  
pp. 56-65 ◽  
Author(s):  
Gurban Etirmishli ◽  
R. Abdullaeva ◽  
S. Ismailova ◽  
Sabina Kazymova
Keyword(s):  
Earth Quake ◽  
Seismic Activity ◽  
Seismic Event ◽  
Background Level ◽  
Energy Class ◽  
Local Magnitude ◽  
Macroseismic Effect ◽  
Complete Network ◽  
Earthquake Size ◽  
The Republic

In 2013, four digital stations («Horadiz», «Agdam», «Beylagan», «Yardimli») were opened. The complete network consisted of 35 digital stations. The network of analog stations continued to operate unchanged. In 2013, the set of parameters for estimating the earthquake size decreased – determining the magnitudes MPVA and the energy classes КР was stopped. Only the local magnitude ML Азр is measured and then recalculated into energy class КР. The seismicity of the territory of Azerbaijan is analyzed. Maps of epicenters of earth-quakes are given. The total number of earthquakes in 2013 was 5248 with ML Азр>0.1, of which only 165 with ML Азр3.0 are published in the Yearbook. A decrease in the seismic activity of the studied territory was noted. Powerful seismic activity, observed in 2012, was replaced in 2013 by a decrease in seismicity to the background level. The most significant seismic event on the territory of the Republic was the April 18 earth-quake with ML Азр=5.3 with macroseismic effect I0=4.

scholarly journals KAZAKHSTAN

2020 ◽  
pp. 113-121
Author(s):  
N. Mikhailova ◽  
I. Sokolova ◽  
B. Bekturganova
Keyword(s):  
Earthquake Magnitude ◽  
Energy Class ◽  
Seismic Events ◽  
Ministry Of Education ◽  
Geophysical Research ◽  
Seismic Observation ◽  
Seismic Stations ◽  
The World ◽  
Southern Side ◽  
The Republic

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.

scholarly journals PERBANDINGAN NILAI PERCEPATAN TANAH MAKSIMUM BERDASARKAN MODIFIKASI KONSTANTA ATENUASI DAN DATA ACCELEROGRAPH TAHUN 2008-2016 PADA STASIUN BMKG LAMPUNG

2020 ◽  
Vol 4 (2) ◽  
pp. 77-85
Author(s):  
Pipit Melinda Meitawati ◽  
Bagus Sapto Mulyatno ◽  
Karyanto Karyanto ◽  
Agung Setiadi
Keyword(s):  
Peak Ground Acceleration ◽  
Seismic Event ◽  
Seismic Intensity ◽  
Earthquake Magnitude ◽  
Empirical Coefficient ◽  
Ground Acceleration ◽  
Contour Map ◽  
Contour Maps ◽  
Test Verification

Peak ground acceleration is one of the parameters used in estimating the extent of breakdown caused by earthquake shocks. In the present study, the determination of an attenuation empirical formula PGA (Peak Ground Acceleration) based on the attenuation equation Lin and Wu (2010). Data used in the study of seismic event data by period year 2008-2012. Through the calculation of regression analysis, then obtained the function attenuation of peak ground acceleration in Lampung region at each station accelerograph.At the LWLI accelerograph station obtained the value of the empirical coefficient of the distance of earthquake -2.351, the empirical coefficient of earthquake magnitude 0,574, and the constant 2,430. At the KASI accelerograph station obtained the value of the empirical coefficient of the distance of earthquake -2.522, the empirical coefficient of earthquake magnitude 0.654, and the constant 2.182. At the BLSI accelerograph station obtained the value of the empirical coefficient from the distance of earthquake -3.224, the empirical coefficient of earthquake magnitude 0.651, and constant 4,092. At the KLI accelerograph station obtained the value of the empirical coefficient from the distance of earthquake -2.746, the empirical coefficient of earthquake magnitude 0.751, and the constant 2.053.Result of correlation test verification, chart relation between distance and magnitude earthquakes, ratio PGA contour maps, as well as a ratio between the value of PGA models with the observation of accelerograph year 2013-2016 show that the acceleration attenuation function of the obtained soil is relatively good. Based on PGA attenuation contour map model at an event the earthquake on 28th May 2011, PGA great value be found in the Liwa region with a PGA score of 10-20 gal and its seismic intensity value is V-VI MMI. It happens because of the source the earthquake is in the western sea of Liwa.

Time and Latitude in South Africa

1972 ◽  
Vol 1 ◽  
pp. 27-38
Author(s):  
J. Hers
Keyword(s):  
South Africa ◽  
Cape Town ◽  
Astronomical Observations ◽  
Royal Observatory ◽  
The Republic ◽  
Astronomical Determination ◽  
Limited Accuracy ◽  
Better Than

In South Africa the modern outlook towards time may be said to have started in 1948. Both the two major observatories, The Royal Observatory in Cape Town and the Union Observatory (now known as the Republic Observatory) in Johannesburg had, of course, been involved in the astronomical determination of time almost from their inception, and the Johannesburg Observatory has been responsible for the official time of South Africa since 1908. However the pendulum clocks then in use could not be relied on to provide an accuracy better than about 1/10 second, which was of the same order as that of the astronomical observations. It is doubtful if much use was made of even this limited accuracy outside the two observatories, and although there may – occasionally have been a demand for more accurate time, it was certainly not voiced.

HADIS KURAIB DALAM KONSEP RUKYATUL HILAL

1970 ◽  
Vol 13 (2) ◽  
Author(s):  
Muslih Husein
Keyword(s):  
The West ◽  
The Earth ◽  
New Moon ◽  
The Republic

Hisab dan rukyat, hakikatnya, adalah cara untuk mengetahui pergantian bulan. Kajian ini memperlihatkan beberapa temuan. Pertama, korelasi antara hadis Kuraib dan terjadinya perbedaan penetapan awal Ramadan, Syawal, dan Dzul Hijjah di Indonesia. Kementerian Agama Republik Indonesia telah menetapkan bahwa Indonesia secara keseluruhan menjadi satu wilayah hukum (wilayatul hukmi). Kedua, tentang keberhasilan rukyat al-hilal di satu kawasan yang diberlakukan bagi kawasan lain di muka bumi. Perlu diketahui bersama bahwa visibilitas pertama hilal tidak meliputi seluruh muka bumi pada hari yang sama, melainkan membelahnya menjadi dua bagian: (1) bagian sebelah Barat yang dapat melihat hilal dan (2) bagian sebelah Timur yang tidak dapat melihat hilal.Hisab and rukyat is a way to know the turn of the month. This study shows several findings. First is the correlation between Kuraib traditions and differences in the determination of the beginning of Ramadan, Shawwal, and Dhul-Hijjah in Indonesia. Ministry of Religious Affairs of the Republic of Indonesia has stated that Indonesia as a whole into a single jurisdiction (wilayatul hukmi). Second, on the success rukyat alhilal in one area that applied to other regions of earth. Important to know that the first visibility of the new moon does not cover the entire face of the earth on the same day, but splitting it into two parts: (1) part of the West to see the new moon, and (2) part of the East were not able to see the new moon.

Determination of integral indicators characterizing the possibility of accommodating the evacuated population in the territory of the Republic of Kazakhstan

2020 ◽  
pp. 154851292097028
Author(s):  
Yernar Zh Akimbayev ◽  
Zhumabek Kh Akhmetov ◽  
Murat S Kuanyshbaev ◽  
Arman T Abdykalykov ◽  
Rashid V Ibrayev
Keyword(s):  
Statistical Data ◽  
Armed Conflicts ◽  
Security Issues ◽  
Inaccurate Information ◽  
The Subject ◽  
The Republic ◽  
The Impact ◽  
Integrated Indicators ◽  
Selection Of

Studying the historical facts of past wars and armed conflicts and natural and man-made emergencies, today in the Republic of Kazakhstan one of the most important security issues is the preparation and organization of the evacuation of the population from possible dangerous zones, taking into account the emergence of new threats to the country’s security. The paper presents an algorithm for constructing universal scales of the distribution function of opportunities by types of support and rebuilding them into subject scales using display functions. The purpose of the paper is to determine the integral indicators characterizing the possibility of accommodation of the evacuated population and the impact on resources during relocation. On the subject scales of cities and districts of the region, indicators of the possibility of relocation of a certain amount of the evacuated population by types of support and indicators characterizing the impact on the district’s resources during resettlement of a certain amount of the evacuated population are determined. It was concluded that the use of integrated indicators allows the selection of areas to accommodate the evacuated population without the use of statistical data, in conditions of incomplete and inaccurate information. The presented method does not replace traditional methods based on classical methods of territory assessment by the level of life sustenance, but also allows their reasonable combination with the experience of specialists in this field, taking into account the incompleteness, uncertainty, and inconsistency of the initial data of the study area, which does not allow the application of existing methods.

Application of the bootstrap method to quantify uncertainty in seismic hazard estimates

1992 ◽  
Vol 82 (1) ◽  
pp. 104-119
Author(s):  
Michéle Lamarre ◽  
Brent Townshend ◽  
Haresh C. Shah
Keyword(s):  
Confidence Interval ◽  
Seismic Hazard ◽  
Statistical Method ◽  
Bootstrap Method ◽  
Earthquake Magnitude ◽  
Earthquake Catalog ◽  
Uncertainty Measure ◽  
Attenuation Models ◽  
The Bootstrap Method

Abstract This paper describes a methodology to assess the uncertainty in seismic hazard estimates at particular sites. A variant of the bootstrap statistical method is used to combine the uncertainty due to earthquake catalog incompleteness, earthquake magnitude, and recurrence and attenuation models used. The uncertainty measure is provided in the form of a confidence interval. Comparisons of this method applied to various sites in California with previous studies are used to confirm the validity of the method.

True Dawn: the defi nition by the Sharia and the terminology of astronomers

2021 ◽  
Vol 14 (3) ◽  
pp. 625-644
Author(s):  
M. Z. Maghomedov
Keyword(s):  
Visual Observation ◽  
Arab Countries ◽  
The Sun ◽  
Exact Time ◽  
Mathematical Calculation ◽  
The Republic ◽  
Morning Prayer

The object of the research is the problem of determining the exact time of the True Dawn onset (al-fajr as-sadik), with which the rituals of fasting and praying begin in Islam, as well as the completion of the rite of standing (wukuf) on Mount Arafat during the Great Pilgrimage (hajj), and its diff erence from the so-called “False” Dawn. (al-fajr al-kazib).  The paper presents the Hadiths describing the signs of these two astronomical phenomena and reveals the results of visual observation of the onset of the True Dawn’s exact time in a number of Arab countries and in the Republic of Dagestan according to the mathematical calculation of the angle of the Sun inclination and the degree of the Sun position (azimuth) towards the horizon of the observed terrain during the true dawn.  The study was based on the determination of the onset of the morning prayer exact time according to the methodology of mathematical calculations by astronomers of the early and late periods, and of the authoritative Muslim jurists (faqihs) as well.

Sign in / Sign up

Export Citation Format

Share Document