scholarly journals Precursory seismicity pattern before strong earthquakes in Greece

2014 ◽  
Vol 3 (1) ◽  
Author(s):  
Ioannis Baskoutas ◽  
George Anatoli Papadopoulos
Keyword(s):  
Temporal Variation ◽  
Seismic Hazard Assessment ◽  
Seismic Parameters ◽  
Strong Earthquakes ◽  
Seismicity Pattern ◽  
Time Period ◽  
Quantitative Characteristics ◽  
Precursory Seismicity ◽  
Remarkable Relation ◽  
Qualitative And Quantitative Characteristics

The temporal variation of seismicity, based on the retrospective analyses of three seismic parameters <em>i.e.</em>, number of earthquakes, bvalue and energy released, have shown significant changes. Their remarkable relation with strong earthquakes occurrence was formulated as a qualitative character precursory seismicity pattern, which were interpreted in terms of a strong earthquakes occurrence preparation phases. The main characteristic of this pattern is that permits the identification of two period of low and high probability for an earthquake occurrence, suggesting its utility in the current seismic hazard assessment, by the continuous monitoring of the temporal variation of the seismic parameters in a given area. This paper investigates the qualitative and quantitative characteristics of the proposed precursory seismicity pattern, before al strong earthquakes occurrence in Greece the time period 2000-2008.

scholarly journals Qualitative precursory pattern before several strong earthquakes in Greece.

2016 ◽  
Vol 47 (3) ◽  
pp. 1061
Author(s):  
I. Baskoutas ◽  
G. Papadopoulos
Keyword(s):  
Temporal Variation ◽  
Continuous Monitoring ◽  
B Value ◽  
Earthquake Catalogue ◽  
Earthquake Parameters ◽  
Seismic Parameters ◽  
Strong Earthquakes ◽  
Mean Values ◽  
Seismicity Pattern ◽  
Time Period

The temporal variation of the seismicity, based on the analysis of three seismic parameters i.e., number of earthquakes, b-value and energy released, were investigated before several strong earthquakes occurrence in Greece the time period 2000-2008. The seismic parameters estimates were obtained by the means of new tool, suited to analyze earthquake catalogue, and visualize their spatio-temporalvariation behaviour. The seismic data used were taken from the earthquake catalogue of the Geodynamic Institute of National Observatory of Athens, Greece. The obtained temporal variation series shows significant changes around their relative mean values, which specific phases can be related to the strong earthquakes preparation stages. This relation shows remarkable temporal regularity so that itcan be establish considered as a precursor seismicity pattern. These results suggest that identification of this behaviour, by the continuous monitoring of the temporal variation of the seismic parameters, can contribute to the assessment of the current seismic hazard and to the impending strong earthquake parameters evaluation, in a given area.

scholarly journals Temporal variation of seismic parameters in the western part of the India-Eurasia plate collision zone

2011 ◽  
Vol 1 (1) ◽  
pp. 3 ◽  
Author(s):  
Ioannis Baskoutas ◽  
George Popandopoulos ◽  
Prasanta Chingtham
Keyword(s):  
Seismic Hazard ◽  
Temporal Variation ◽  
Strong Earthquake ◽  
Earthquake Forecasting ◽  
Target Area ◽  
Origin Time ◽  
Seismic Parameters ◽  
Strong Earthquakes ◽  
Mean Values ◽  
North West

We examined the temporal seismicity variation in the north-west Himalayas and the adjacent regions in relation to strong earthquake occurrences in the period 1970-2010. The aim was to promote seismic hazard assessment and to show the possibilities of strong earthquake forecasting by means of the FastBEE computer tool. The temporal variation of the seismicity is expressed in terms of three basic seismic parameters: the logarithm of the number of earthquakes logN, the seismic energy released in the mode logE2/3 and the b-value of the earthquake magnitude-frequency distribution expressed by the Gutenberg-Richter relation. Significant changes to relative mean values, forming consecutive relative minima and maxima, of the obtained temporal variation series of the seismicity parameters can be considered anomalies. These anomalies were investigated before strong (magnitude Mw≥5.6.) earthquake occurrences and were successfully correlated with 12 strong earthquakes. The mean time of the duration of the anomalies before the origin time of the impending earthquake were estimated to be equal to 3.3±1.3 years. We conclude that, in the region under study, the established correlations can be useful for the intermediate-term forecasting of strong earthquakes and that the continuous monitoring of the temporal evolution of seismicity by means of the FastBEE tool can contribute to the evaluation of the seismic hazard status in a target area. The available earthquake data and the results obtained indicate that after the beginning of 2006, the temporal variation of the seismicity does not present clear prognostic anomalies. This behavior is compatible with the absence of earthquakes with a magnitude of Mw 6.0 or more in the area examined.

scholarly journals SPACE REGULARITY MANIFESTATION OF THE TEMPORAL VARIATION OF SEISMIC PARAMETERS: POSSIBILITY FOR THE STRONG SEISMIC ACTIVITY ASSESSMENT

2017 ◽  
Vol 43 (4) ◽  
pp. 2125
Author(s):  
George Popandopoulos ◽  
I. Baskoutas
Keyword(s):  
Temporal Variation ◽  
Seismic Energy ◽  
B Value ◽  
Data Sets ◽  
Earthquake Activity ◽  
Seismic Parameters ◽  
Strong Earthquakes ◽  
Seismic Catalogue ◽  
Local Areas ◽  
Earthquake Predictions

In the present work the detailed analysis of the space-time variation, of the seismic energy released and b-value was performed, in order to study the space regularity manifestation of the temporal variation of seismic parameters, to test the reliability of the results and to compare the obtained temporal profiles in relation to the strong earthquake activity. The study was carried out in the subduction zone along the western part of the Hellenic trench arc system. The earthquakes data, witch occurs in the five adjacent local areas in the period 1980 -2007 were used. The reliability of the results is tested positively for “internal” dubiety, against independent seismic data sets from adjacent local areas, being in common the processing method, and the properties of seismic catalogue. It was found that in the majority of the cases (23 of 32) the significant temporal variation changes, considered as anomalies, can be related to the preparation process of the strong earthquakes Ms>5.7, acting as intermediate term precursors. Based on these findings the quality index of the successful intermediate term earthquake predictions reach up to 71.9%. It is observed that the temporal variation of the seismic energy released anomalies were time shifted in respect to the central areas, toward to N-NE and S-SE direction. Moreover it is found that the strong earthquakes occurrence also shows immigration, in respect to the central areas, along the concatenation of the adjacent local areas. These two observations may reveal the formation of a tectonic wave, in the broader area south of Zakynthos Island, Its velocity was estimated to be as 100 to 150 km/year

Assessment of drugs increasing the reproductive function of cows of oocyte donors

2020 ◽  
pp. 122-126
Author(s):  
A. Plakhova ◽  
K. Plemyashov
Keyword(s):  
Maximum Concentration ◽  
Ultrasound Examination ◽  
Reproductive Function ◽  
Experimental Animals ◽  
Qualitative And Quantitative ◽  
Quantitative Characteristics ◽  
Oocyte Donors ◽  
Experimental Group ◽  
Qualitative And Quantitative Characteristics ◽  
Donor Cows

In these studies, a comprehensive assessment of the effect of the drugs «Carofertin» and «Hemobalance» on the reproductive function of oocyte donor cows was carried out. At the same time, the effect of these drugs on the biochemical parameters of blood serum, as well as on the concentration of progesterone, carotene in the experimental groups and the activity of the ovaries in the experimental animals was assessed. An increase in the activity of alkaline phosphatase in the first and third experimental groups was found, which amounted to 128.80 and 104.6 IU / L. There was also a decrease in the concentration of cholesterol in the experimental groups compared with the control. The maximum concentration of carotene was noted in the experimental group No. 1, which were injected with «Carofertin» subcutaneously, and in the experimental group No. 3, which were injected with «Carofertin» and «Hemobalance». The maximum concentration of progesterone was also noted in groups No. 3 and No. 1 and amounted to 21.98±3.03 and 17.01±9.68 nmol / l, respectively. In the course of ultrasound examination of the ovaries in experimental animals, a relationship was noted between the concentration of progesterone and the intensity of the blood supply of the corpus luteum on the ovaries in experimental animals. Subsequently, in one animal from each experimental group, oocytes were aspirated (OPU) twice with an interval of two weeks and their qualitative and quantitative characteristics were assessed. The maximum number of oocytes suitable for use was noted in the experimental group No. 3, which was injected with both study drugs.

Formation of work models ormation of work models of nursing staff of different levels

2020 ◽  
pp. 39-47
Author(s):  
Irina Muntyan
Keyword(s):  
Nursing Staff ◽  
Nursing Personnel ◽  
Methodological Basis ◽  
Qualitative And Quantitative ◽  
Quantitative Characteristics ◽  
Work Model ◽  
Different Levels ◽  
Qualitative And Quantitative Characteristics

The work model of a nurse includes 14 elements representing the qualitative and quantitative characteristics of the work. The analysis of these elements allowed us to form and offer work models for senior and rankand-file nurses. These models ensure selection, evaluation and placement of nursing personnel on a uniform methodological basis.

Quantitative and Qualitative Characteristics of Urban Discharge to Small River Basins in the South West of Sweden

1983 ◽  
Vol 14 (3) ◽  
pp. 155-166 ◽  
Author(s):  
Wm. Hogland ◽  
R. Berndtsson
Keyword(s):  
River Basins ◽  
Small River ◽  
The South ◽  
Time Intervals ◽  
Qualitative And Quantitative ◽  
South West ◽  
Quantitative Characteristics ◽  
Qualitative Characteristics ◽  
Qualitative And Quantitative Characteristics

The paper deals with the qualitative and quantitative characteristics of urban discharge. Ratios for urban discharge and recipient flow during different time intervals are presented and discussed. The quality of the urban discharge is illustrated through pollutographs.

Fractional Dynamic Sliding Mode Control for uncertain chaotic systems Applied to a Chaotic Robot arm under dynamic load.

2020 ◽  
Vol 10 ◽  
Author(s):  
Sara Gholipour P ◽  
Sara Minagar ◽  
Javad Kazemitabar ◽  
Mobin Alizadeh
Keyword(s):  
Sliding Mode Control ◽  
Chaotic Systems ◽  
Control Method ◽  
Sliding Mode ◽  
Qualitative And Quantitative ◽  
Mode Control ◽  
Quantitative Characteristics ◽  
Dynamic Sliding Mode Control ◽  
Dynamic Sliding Mode ◽  
Qualitative And Quantitative Characteristics

Background: A novel type of control strategy is presented for control of chaotic systems particularly a chaotic robot in joint and workspace which is the result of applying fractional calculus to dynamic sliding mode control. Objectives: To guarantee the sliding mode condition, control law is introduced based on the Lyapunov stability theory. Methods: A control scheme is proposed for reducing the chattering problem in finite time tracking and robust in presence of system matched disturbances. Conclusion: Also, all of chaotic robot's qualitative and quantitative characteristics have been investigated. Numerical simulations indicate viability of our control method. Results: Qualitative and quantitative characteristics of the chaotic robot are all proven to be viable thru simulations.

Public health as a basic condition for the socio-economic development of the region

2021 ◽  
pp. 18-24
Author(s):  
А.Н. Гайфуллин
Keyword(s):  
Economic Development ◽  
Standard Of Living ◽  
The Public ◽  
Qualitative And Quantitative ◽  
Socio Economic Development ◽  
Quantitative Characteristics ◽  
The Subject ◽  
Health Situation ◽  
Qualitative And Quantitative Characteristics

Социально-экономическое развитие есть планомерная процедура совершенствования уровня жизни, качественных и количественных характеристик, потребляемых общественностью благ. Исходя из ситуации со здоровьем населения в регионе, выставляются соответствующие ориентиры. В разрезе региональной специфики закладываются и реализуются целевые программы, которые одновременно зависят от здоровья населения и направлены, собственно, на улучшение качества его здоровья. Согласно тематике настоящей статьи, ведущий фактор социально-экономического роста - здоровье населения, именно он будет оценен как катализатор искомого регионального развития. Socio-economic development is a systematic procedure for improving the standard of living, qualitative and quantitative characteristics of the goods consumed by the public. Based on the health situation of the population in the region, appropriate guidelines are set. In the context of regional specifics, targeted programs are being laid and implemented, which at the same time depend on the health of the population and are aimed, in fact, at improving the quality of its health. According to the subject of this article, the leading factor of socio-economic growth is the health of the population, it will be evaluated as a catalyst for the desired regional development.

The result of instrumental analysis of the amount of motion in patients with different occlusive and skeletal classes according to the condylography

2021 ◽  
Vol 1 (38) ◽  
pp. 8-13
Author(s):  
M. G. Soykher ◽  
A. V. Lepilin ◽  
M. I. Soykher ◽  
I. K. Pisarenko ◽  
G. T. Saleeva ◽  
...  
Keyword(s):  
Complex Formation ◽  
Temporomandibular Joint ◽  
Temporal Bone ◽  
Qualitative And Quantitative ◽  
Lower Jaw ◽  
Individual Function ◽  
Mandibular Fossa ◽  
Quantitative Characteristics ◽  
Mandibular Movements ◽  
Qualitative And Quantitative Characteristics

The temporomandibular joint is paired, a complex formation of an ellipsoid shape, which is formed by the articular head of the lower jaw, the mandibular fossa and the articular tubercle of the temporal bone, covered with fibrous cartilage. There are two types of movements in the temporomandibular joint: translation and rotation, which implement protrusion-retrusion, right and left mediotrusion, and opening-closing. Computerized axiography is used for assessment of the mandibular movements and the patient’s skeletal parameters. This type of examination allows you to adjust the articulator for an individual function and to study the qualitative and quantitative characteristics of the temporomandibular joint.

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