Statistical analysis of seismicity in Egypt and its surroundings

Ali, Sherif M.

doi:10.1007/s12517-015-2079-x

Cited by 20 publications

(11 citation statements)

References 30 publications

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“…5, EFB decomposed almost 80 % of its original weight. In addition, metal compounds were observed to accelerate the decomposition of material as reported by Ali et al [36]. Thus, metal elements in EFB may contribute to the continuous material degradation during the calcination process as illustrated in Fig.…”

Section: Yield Of Cao-based Sorbentmentioning

confidence: 56%

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Effect of Empty Fruit Bunch in Calcium Oxide for Cyclic CO₂ Capture

2019

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Empty fruit bunch (EFB) is utilized to increase the CO 2 capture capacity and cyclic stability of calcium oxide (CaO) prepared from cockle shells (CS). The cyclic reaction of calcination and carbonation reaction was performed in pure N 2 environment and in the presence of CO 2 in N 2 , respectively. The EFB in CS modified the pore structural properties, morphology, and composition of the pristine CaO. Higher EFB loading in CS reduced the CaO composition but improved the CO 2 capture capacity and cyclic stability during cyclic CO 2 capture.

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Section: Yield Of Cao-based Sorbentmentioning

confidence: 56%

“…For the CS+50%EFB precursor, the dry-mixed prepared precursor shows a similar weight loss in both decomposition temperature regions. Ali et al [36] also observed three stages of decomposition in metal-doped material. The weight loss in the rapid temperature region increased with higher amount of metal dopant.…”

Section: Thermal Degradation Andmentioning

confidence: 92%

Effect of Empty Fruit Bunch in Calcium Oxide for Cyclic CO₂ Capture

2019

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“…In recent years, many authors have used the combination of several statistical parameters such as Gutenberg-Richter b-value, correlation dimension Dc-value and precursory seismic quiescence Z-value in order to reveal the possible locations of future earthquakes in a given region (e.g., Wiemer and Wyss, 1994;Wyss and Martirosyan, 1998;Katsumata and Kasahara, 1999;Öncel and Wilson, 2002;Chouliaras and Stavrakakis, (2000); Huang et al, (2002); Wyss et al, 2004;Polat et al, 2008;Roy et al, 2011;Öztürk and Bayrak, 2012;Öztürk, 2011;2013;Ali, 2016). The basic idea of these types of studies is that the regions with the lower b-value, the larger Dc-value and the higher Z-value are probable areas for next earthquake hazard.…”

Section: Results Of Statistical Investigations Of Recent Seismicity Amentioning

confidence: 99%

“…In order to decluster the earthquake catalogue used in this study, Reasenberg (1985) algorithm within the ZMAP software (Wiemer, 2001) is used, and precursory quiescence analysis is made by using the resulting declustered data. After Wiemer (2001), many authors have used ZMAP software for the analysis of seismic quiescence in different parts of the world (e.g., Katsumata and Kasahara, 1999;Chouliaras and Stavrakakis, 2000;Polat et al, 2008;Öztürk, 2011;2013;Öztürk and Bayrak, 2012;Ali, 2016). We declustered the earthquake catalogue by using the algorithm given by Reasenberg (1985).…”

Section: Process For Declustering Of Earthquake Data and Standard Normentioning

confidence: 99%

“…There exist a lot of regional and temporal studies on the space-time characteristics of earthquake activity for different parts of the world, and many authors obtained important outcomes and conclusions by using scaling laws (e.g., Utsu, 1971;Mandelbrot, 1982;Habermann, 1983;Hirata, 1989;Frohlich and Davis, 1993;Wiemer and Wyss, 2000;Awad, 2005;Öztürk et al, 2008;Öncel and Wilson, 2007;Roy et al, 2011;Öztürk, 2011;Ali, 2016). The Albania region is seismically active with tens of destructive large earthquakes over the past twenty centuries as revealed from the historical sources (Sulstarova et al, 1980;Ormeni, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Spatial and temporal analysis of recent seismicity in different parts of the Vlora-Lushnja-Elbasani-Dibra Transversal Fault Zone, Albania

Ormeni¹,

Öztürk²,

Fundo³

et al. 2018

AJES

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Spatial and temporal evaluation of current seismic activity throughout the Vlora-Lushnja-Elbasani-Dibra (VLED) transversal fault zone were carried out at the beginning of year 2016. The seismotectonic b-value, fractal dimension Dc-value and precursory seismic quiescence Z-value are considered for a detailed statistical analysis. Completeness magnitude Mc-value varies from 2.5 to 2.7 for different parts of the VLED fault zone. The b-value is calculated as 1.10±0.04 for the south western part and 1.13±0.05 for the middle part, whereas it is estimated as 0.94±0.07 for the north eastern part of the study region. These results reveal that b-values for all regions are well represented by a b-value typically close to 1.0. There are clear decreasing trends in temporal changes of b-values before the occurrences of some strong main shocks. On the contrary, no earthquakes are observed in some periods after decrease of b-value. Dc-values are computed as 2.66±0.04 for the south western part, 2.64±0.03 for the middle part and 2.15±0.02 for the north eastern part of the VLED fault zone. These rather large values show that earthquake activity is more clustered at larger scales or in smaller areas in the study area.Considering the phenomenon of seismic quiescence as a precursor of the main earthquakes gives successful outcomes in defining the potential anomalies and possible locations of future earthquakes. Quiescence analysis of current seismicity at the beginning of 2016 in the VLED fault zone is performed with the test of standard normal deviate Z-value. Distributions of resulting Z-values show six anomalous regions along the different parts of the VLED fault zone. These quiescence areas are detected at (i) 40.81ºN-19.86ºE (including Kuc-Bubullim, southeast of Lushnja town), (ii) 41.00ºN-20.01ºE (in the Cerriku, south of Elbasani town), (iii) 41.31ºN-20.13ºE (around Bene-Qafe, northeast of Elbasani town), (iv) 41.43ºN-20.21ºE (Krasta-Batra, south of Bulqiza town), (v) 41.28ºN-20.49ºE (including Carrishta-Stebleve, northeast of Librazhdi town), (vi) 41.51ºN-20.51ºE (including Qerrenec-Gjorica, west of Dibra town). As an important result, analyses of spatial and temporal characteristics of the earthquake activity may supply significant clues for revealing the future seismic hazard along the VLED fault zone, and these anomaly regions may be interpreted as the locations of next possible earthquakes.

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