Seismic Monitoring and Data Processing in Seismological Observatory in Skopje—Republic of Macedonia—Basis for a Complex Geophysical Monitoring

2015 ◽  
pp. 133-141
Author(s):  
D. Černih ◽  
V. Čejkovska
Keyword(s):  
Data Processing ◽  
Seismic Monitoring ◽  
Geophysical Monitoring ◽  
Republic Of Macedonia ◽  
Seismological Observatory

scholarly journals METHODS OF SEISMIC DATA PROCESSING FOR SOLVING TASKS OF MONITORING OF FOREIGN TESTING LANDS

2021 ◽  
pp. 31-41
Author(s):  
Y. O. Gordienko ◽  
A. O. Lotoshko ◽  
O. O. Paplinskiy
Keyword(s):  
Data Processing ◽  
Seismic Waves ◽  
Dynamic Properties ◽  
International System ◽  
Reference Signal ◽  
Measurement Data ◽  
Correlation Method ◽  
Seismic Signal ◽  
Seismic Monitoring ◽  
Seismic Stations

The paper analyzes the methods of processing measurement data of the seismic observation method used in the International Seismic Monitoring System and the Main Center for Special Control of the State Space Agency of Ukraine to solve problems of monitoring nuclear tests at foreign test sites. The directions of improvement of known and development of new methods of processing of measuring data of seismic method of detection in the conditions of presence and absence of a priori information on the form of a seismic signal are defined. If the form of the expected seismic signal is known, then the monitoring of foreign test sites by the seismic grouping system can be realized by supplementing the method of controlled directional reception with a correlation scheme of measurement data processing. In the absence of information on the shape of the seismic signal, the monitoring of the test site is carried out by dividing the group into two subgroups, followed by the cross-correlation method between the original samples of each subgroup. For a network of three-component stations, if there is information about the shape of the expected seismic signal, the method of comparison with the reference signal is used. In the absence of reference signals, monitoring is implemented using system discriminant, which takes into account the kinetic and dynamic properties of the expected signal with a cell from a given area. Possibilities of application of seismic stations of the International system of seismic monitoring are analyzed, use of measuring data which for the decision of problems of monitoring of foreign landfills allows to reduce time of definition of parameters of a seismic event essentially. A feature of the signals registered by seismic stations of the International System is the presence of types of seismic waves characteristic of events with cells in the near zone. Implementation of monitoring of test sites is possible by taking into account the polarization and dynamic properties of seismic waves. The implementation of the proposed approaches will increase the efficiency of solving the problem of detecting nuclear explosions at foreign test sites.

scholarly journals Seismic Monitoring and Data Processing at the Norwegian National Seismic Network

2018 ◽  
Vol 52 (I) ◽  
pp. 27-40 ◽  
Author(s):  
Lars Ottemöller ◽  
Marte Louise Strømme ◽  
Berit Marie Storheim
Keyword(s):  
Data Processing ◽  
Seismic Monitoring ◽  
Seismic Network ◽  
International Seismological Centre

Lars Ottemöller, Marte Louise Strømme and Berit Marie Storheim report on Seismic Monitoring and Data Processing at the Norwegian National Seismic Network for the Summary of the Bulletin of the International Seismological Centre.

scholarly journals New geomagnetic measurements in the Republic of Macedonia

2013 ◽  
Vol 56 (3) ◽  
Author(s):  
Marjan Delipetrev ◽  
Nenad Novkovski ◽  
Todor Delipetrov
Keyword(s):  
Data Processing ◽  
Geomagnetic Field ◽  
Additional Data ◽  
Polynomial Model ◽  
Republic Of Macedonia ◽  
Geomagnetic Data ◽  
The Republic ◽  
Geomagnetic Measurements

<p>This study presents measurements of the geomagnetic field of the Republic of Macedonia, performed through a network of newly defined repeat stations. The measurements of these elements were in the intervals of 3.378° ≤ DD ≤ 3.983°, 57.276° ≤ I ≤ 59.005°, and 46 235 nT ≤ F ≤ 46903 nT. The geomagnetic data were processed and the results of the observed elements of the geomagnetic field on the repeat stations are presented. Additional data processing was performed to calculate the reduced values of the intensive elements of the field at the level of H500 a.s.l.. Based on these data, new maps of the geomagnetic field of the Republic of Macedonia are developed, together with the polynomial model of the elements of the geomagnetic field for the 2010.0 epoch.</p>

Seismic Monitoring and Data Processing at the National Institute for Earth Physics – Romania

2021 ◽  
Vol 55 (I) ◽  
pp. 30-42
Author(s):  
Constantin Ionescu ◽  
Mihaela Popa ◽  
Cristian Neagoe ◽  
Daniela Veronica Ghica
Keyword(s):  
Data Processing ◽  
Seismic Monitoring

Constantin Ionescu, Mihaela Popa, Cristian Neagoe and Daniela Veronica Ghica report on seismic monitorig at the National Institute for Earth Physics in Măgurele, Romania, for the Summary of the Bulletin of the ISC.

Recursive deconvolution filters for seismograph systems

1989 ◽  
Vol 79 (5) ◽  
pp. 1629-1641
Author(s):  
R.-G. Ferber
Keyword(s):  
Transfer Function ◽  
Data Processing ◽  
Time Domain ◽  
Numerical Data ◽  
Signal Distortion ◽  
Recursive Filters ◽  
Deconvolution Problem ◽  
Seismological Observatory ◽  
Digital Recordings

Abstract A time-domain solution of the deconvolution problem for digital recordings from seismograph systems is given. Compensation for the signal distortion caused by the seismograph can be done by numerical data processing of the recorded seismograms using recursive filters which are designed from the analog transfer function using the bilinear z-transform. An application of the method is worked out for the seismograph system of the Central Seismological Observatory Gräfenberg, F. R. Germany.

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