Traces of the strong earthquakes in ancient Mikhaylovka archeological monument, Kerch’ Peninsula, Crimea

2018 ◽  
Author(s):  
А.М. Корженков ◽  
А.Н. Овсюченко ◽  
А.С. Ларьков ◽  
А.В. Мараханов ◽  
Е.А. Рогожин ◽  
...  
Keyword(s):  
Seismic Intensity ◽  
City Wall ◽  
Strong Earthquakes ◽  
Counterclockwise Rotation ◽  
Kerch Peninsula ◽  
Systematic Character ◽  
Seismic Oscillations ◽  
The Hill ◽  
Northern Wall ◽  
Northern City

In the paper there are results of archeoseismological study of an antic archeological monument – Mikhaylovka hill-fort located in Kerch’ peninsula. Studied deformations complex includes: systematic tilts, shifts and collapses of building constructions of latitudinal strike northward. Building elements of longitudinal strike tilted, shifted and collapsed westward. We revealed one counterclockwise rotation in a wall part which was not anchored. Most impressive and unique is shearing and shifting southward of a significant fragment of northern city wall. The revealed deformations in the trench No. III of Mikhaylovka hill-fort undoubtedly demonstrate their seismogenic origin. Large number of double walls – original walls and counterforce ones – “krepida’s” testifies on at least two events of destruction and deformation in Mikhaylovka fort-hill. Local seismic intensity was apparently (VIII) ≤ Io ≤ IX. According to numismatic founds and fire traces first earthquake occurred in beginning of II century AD, second earthquake - in III century AD. Maximum summary seismic oscillations during first earthquakes propagated apparently in latitudinal direction which led to wedging of significant part of the northern wall of the hill-fort. Seismic shocks during second earthquakes went along NNW-SSE axis. This direction is testified be systematic character of tilts, shifts and collapses of the walls of both directions.

scholarly journals KAMCHATKA AND COMMANDER ISLANDS

2020 ◽  
pp. 172-182
Author(s):  
D. Chebrov ◽  
A. Chebrova ◽  
I. Abubakirov ◽  
E. Matveenko ◽  
S. Mityushkina ◽  
...  
Keyword(s):  
Moment Tensor ◽  
Seismic Intensity ◽  
Earthquake Catalogue ◽  
Seismic Moment Tensor ◽  
Magnitude Of Completeness ◽  
Commander Islands ◽  
Strong Earthquakes ◽  
Double Couple ◽  
Kamchatka Earthquake ◽  
Surrounding Areas

The seismicity review of Kamchatka and surrounding territories for 2014 is given. In Kamchatka earthquake catalogue minimum local magnitude of completeness is MLmin=3.5, and for earthquakes under the Okhotsk sea with h≥350 kmMLmin=3.6. The Kamchatka earthquake catalogue for 2014 with ML3.5, published in the Appendix to this annual, includes 1114 events. 86 earthquakes of the catalogue with ML=3.35–6.2 were felt in Kamchatka and surrounding areas with seismic intensity I ranged from 2 to 5 according the MSK-64 scale. For all events with ML5.0 occurred in the area of responsibility of the KB GS RAS in 2014, an attempt to calculate the seismic moment tensor (SMT) was made. There are 40 such events in the regional catalogue. For 36 earthquakes, the SMT and depth h of the equivalent point source were calculated successfully. The calcu-lations were performed for the SMT double-couple model using a nonlinear algorithm. In 2014, a typical location of the earthquake epicenters was observed in the Kamchatka zone. In 2014, the seismicity level in all selected zones and in the region as a whole corresponded to the background one according to the “SESL’09” scale. The number of recorded events with ML3.6 and strong earthquakes with ML5.1 is close to the average annual value. Anomalous and outstanding events were not recorded.

scholarly journals New Perspectives in the Definition/Evaluation of Seismic Hazard through Analysis of the Environmental Effects Induced by Earthquakes

Geosciences ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 58 ◽  
Author(s):  
Sabina Porfido ◽  
Giuliana Alessio ◽  
Germana Gaudiosi ◽  
Rosa Nappi
Keyword(s):  
Seismic Hazard ◽  
Environmental Effects ◽  
State Of The Art ◽  
Seismic Intensity ◽  
Seismic Hazards ◽  
Special Issue ◽  
Strong Earthquakes ◽  
Innovative Methods ◽  
Esi Scale ◽  
Earthquake Environmental Effects

The application of the Environmental Seismic Intensity (ESI) scale 2007 to moderate and strong earthquakes, in different geological context all over the word, highlights the importance of Earthquake Environmental Effects (EEEs) for the assessment of seismic hazards. This Special Issue “New Perspectives in the Definition/Evaluation of Seismic Hazard through Analysis of the Environmental Effects Induced by Earthquakes” presents a collection of scientific contributions that provide a sample of the state-of-the-art in this field. Moreover the collected papers also analyze new data produced with multi-disciplinary and innovative methods essential for development of new seismic hazard models.

scholarly journals RECENTLY DISCOVERED NEO-ASSYRIAN ROYAL INSCRIPTIONS FROM THE REVIEW PALACE AND NERGAL GATE OF NINEVEH

Iraq ◽  
2017 ◽  
Vol 79 ◽  
pp. 3-20 ◽  
Author(s):  
Ali. Y. Al-Juboori
Keyword(s):  
City Wall ◽  
Royal Inscriptions ◽  
Northern City

Between 1987 and 1992, Iraqi archaeologists under the direction of the local Inspectorate of Antiquities undertook excavations at Nineveh. In particular, they excavated east of the mosque located on the smaller mound of Nebi Yunus and at the Nergal Gate, the middle gate of the northern city wall. At the Nergal Gate, an inscription of Sennacherib was found on two bull colossi and two paving stones. At Nebi Yunus, a few inscribed clay and stone objects were discovered in the ruins of the armoury, the so-called “Rear Palace” (or “Review Palace”). These included a slab of Ashurnaṣirpal II, a prism fragment of Esarhaddon, two human-headed winged bull colossi of Esarhaddon, a winged-bull of Ashurbanipal, and an unsculpted wall slab of Ashurbanipal. Then, after east Mosul was liberated from ISIS/Daʾesh occupation in early 2017, seven further inscriptions of Esarhaddon were discovered in looters’ tunnels under the destroyed mosque. All of those inscriptions are edited here.

Urban Development in Central Transcaucasia in Anatolian Context: New Data

2011 ◽  
Vol 17 (1) ◽  
pp. 135-156 ◽  
Author(s):  
Vakhtang Licheli
Keyword(s):  
Bronze Age ◽  
Asia Minor ◽  
Early Bronze Age ◽  
Southern Slope ◽  
Eastern Slope ◽  
The North ◽  
Lower Terrace ◽  
The Hill ◽  
Northern Wall ◽  
North Western

Abstract The settlement and necropolis of Grakliani Hill are located in Central Transcaucasia, Georgia. Excavations of the settlement on the eastern slope and the necropolis on the south-western part of the hill demonstrated that the site had been occupied between the Chalcolithic and the Late Hellenistic periods. The most interesting remains of buildings belong to 2nd and 1st millennium BC. Several sanctuaries of this period were excavated. A monumental altar was discovered in the eastern part of the settlement. The altar was located in the north-western corner of a building. On its eastern side there was an ash pit with a platform along the northern wall. The platform was used for placing offerings, including a South Mesopotamian seal. An architectural complex of the following period (450-350 B.C) was discovered in the western part of the lower terrace. It consisted of three main rooms and three store-rooms. Burials of various periods were discovered in the western part of the hill’s southern slope. The earliest one is a pit-burial dating to the Early Bronze Age, the latest one belongs to the 2nd century BC. After analyses of the finds several directions of cultural and commercial links were identified: Colchis, Persia, Phoenicia, Mesopotamia, Egypt, Asia Minor.

scholarly journals SEISMICITY of KAMCHATKA and COMMANDER ISLANDS in 2015

2021 ◽  
pp. 153-163
Author(s):  
D. Chebrov ◽  
V. Saltikov ◽  
E. Matveenko ◽  
S. Droznina ◽  
E. Romasheva ◽  
...  
Keyword(s):  
Moment Tensor ◽  
Seismic Intensity ◽  
Earthquake Catalogue ◽  
Seismic Moment Tensor ◽  
Commander Islands ◽  
Strong Earthquakes ◽  
Significant Events ◽  
Double Couple ◽  
Kamchatka Earthquake ◽  
Surrounding Areas

The seismicity review of Kamchatka and surrounding territories for 2015 is given. In the Kamchatka earthquake catalogue, the minimum local magnitude of completeness is MLmin=3.5, and for earthquakes with h≥350 km under the Okhotsk sea MLmin=3.6. The Kamchatka earthquake catalogue for 2015 with ML3.5, published in the Appendix to this issue, includes 1213 events. 92 earthquakes of the catalogue with ML=3.0–6.5 were felt in Kamchatka and surrounding areas with seismic intensity I=2–6 according to the MSK-64 scale. For all events with ML5.0 that occurred in 2015 in the KB GS RAS area of responsibility, an attempt to calculate the seismic moment tensor (SMT) was made. There are 32 such events in the regional catalogue. For 28 earthquakes the SMT and depth h of the equivalent point source were calculated successfully. The calculations were performed for the SMT double-couple model using a nonlinear algorithm. In 2015, a typical location of the earthquake epicenters was observed in the Kamchatka zone. In 2015, the seismicity level in all selected zones and in the region as a whole correspond to the background one according to the “SESL’09” scale. The number of recorded events with ML3.5 and strong earthquakes with ML5.0 is close to the average annual value. Anomalous and significant events were not recorded.

scholarly journals Macroseismic intensity attenuation equations for Central Asia earthquakes

2021 ◽  
Vol 929 (1) ◽  
pp. 012029
Author(s):  
T U Artikov ◽  
R S Ibragimov ◽  
T L Ibragimova ◽  
M A Mirzaev
Keyword(s):  
Seismic Hazard ◽  
Central Asia ◽  
Seismic Intensity ◽  
Macroseismic Intensity ◽  
Earthquake Magnitude ◽  
Source Depth ◽  
Strong Earthquakes ◽  
Intensity Attenuation ◽  
Hazard Assessments ◽  
Macroseismic Survey

Abstract Based on macroseismic survey data for strong earthquakes in Central Asia, the coefficients of attenuation of seismic intensities with distance in the Blake-Shebalin- and Kovesligethy -type equations were refined. A new generalized dependence of macroseismic intensity attenuation on distance, taking into account the depth of the earthquake hypocentre, were obtained. Relations between the minor and major axes of the ellipse approximating real isoseists depending on the shaking strength, source depth and earthquake magnitude were found. With the example of the territory of eastern Uzbekistan, the influence of the choice of the law of seismic intensity attenuation with distance on the obtained seismic hazard assessments is investigated.

scholarly journals Active faults of the Kerch’s Peninsula: new results

2019 ◽  
Vol 488 (4) ◽  
pp. 408-412
Author(s):  
А. N. Ovsyuchenko ◽  
R. N. Vakarchuk ◽  
A. M. Korzhenkov ◽  
A. S. Larkov ◽  
А. I. Sysolin ◽  
...  
Keyword(s):  
Seismic Hazard ◽  
Strong Earthquake ◽  
Late Holocene ◽  
Active Fault ◽  
Active Faults ◽  
Fault Zones ◽  
Strong Earthquakes ◽  
Earthquake Sources ◽  
Kerch Peninsula ◽  
Seismotectonic Model

In the paper there are results of a recent study of the active faults in the Kerch Peninsula. There was compiled a Map of Active Faults - sources of the strong earthquakes occurred in Late Holocene. The map is a regional seismotectonic model of strong earthquake sources - detailed basis for a spatial prognosis of the seismic hazard. Results of the study show that the Kerch Peninsula demonstrates signs of the classical morphostructures, and a morphology of the modern peninsula contours is caused by the large active fault zones.

scholarly journals New Ground Motion to Intensity Conversion Equations for China

2021 ◽  
Vol 2021 ◽  
pp. 1-21
Author(s):  
Xiufeng Tian ◽  
Zengping Wen ◽  
Weidong Zhang ◽  
Jie Yuan
Keyword(s):  
Ground Motion ◽  
Correction Term ◽  
Strong Motion ◽  
Seismic Intensity ◽  
Peak Ground Velocity ◽  
Ground Acceleration ◽  
Strong Earthquakes ◽  
Hypocentral Distance ◽  
Peak Ground Motion ◽  
Pseudo Spectral

In this study, we use the strong motion records and seismic intensity data from 11 moderate-to-strong earthquakes in the mainland of China since 2008 to develop new conversion equations between seismic intensity and peak ground motion parameters. Based on the analysis of the distribution of the dataset, the reversible conversion relationships between modified Mercalli intensity (MMI) and peak ground acceleration (PGA), peak ground velocity (PGV), and pseudo-spectral acceleration (PSA) at natural vibration periods of 0.3 s, 1.0 s, 2.0 s, and 3.0 s are obtained by using the orthogonal regression. The influence of moment magnitude, hypocentral distance, and hypocentral depth on the residuals of conversion equations is also explored. To account for and eliminate the trends in the residuals, we introduce a magnitude-distance-depth correction term and obtain the improved relationships. Furthermore, we compare the results of this study with previously published works and analyze the regional dependence of conversion equations. To quantify the regional variations, a regional correction factor for China, suitable for adjustment of global relationships, has also been estimated.

scholarly journals Visualization of macroseismic parameters during examination of epicentral zones of strong earthquakes

2021 ◽  
Vol 264 ◽  
pp. 02039
Author(s):  
Lutfulla Khamidov ◽  
Soqi Makhkamov ◽  
Maxmud Turapov ◽  
Safarali Kholmirzaev ◽  
Shavkat Suyunov ◽  
...  
Keyword(s):  
Crack Resistance ◽  
Building Materials ◽  
Protective Coatings ◽  
Seismic Intensity ◽  
Crack Development ◽  
Strong Earthquakes ◽  
Macroseismic Effect ◽  
Seismic Vibrations ◽  
Macroseismic Parameters

The article discusses the fragile destruction of building materials during strong earthquakes, the features of the macroseismic effect of cracking expressed in the protective coatings of buildings; it is recommended to optimize the composition based on polymer by composition that increases the crack resistance of plaster solutions. In particular, the visualization of macroseismic parameters is given on the example of the survey of the epicentral zones of the Tashkent (2008), Cannes (2011) and Marzhanbulak (2013) strong earthquakes that occurred in Kyrgyzstan and Uzbekistan. Possible directions of crack development and density of their distribution over the macroseismic area are analyzed. It was revealed that the vulnerability to micro-destruction of types of protective materials is proportional to the seismic intensity and is mainly due to the intensity of seismic vibrations.

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