scholarly journals A Review of Tsunami Hazards in the Makran Subduction Zone

Geosciences ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 372
Author(s):  
Amin Rashidi ◽  
Denys Dutykh ◽  
Zaher Hossein Shomali ◽  
Nasser Keshavarz Farajkhah ◽  
Mohammadsadegh Nouri
Keyword(s):  
Subduction Zone ◽  
Subduction Zones ◽  
Tsunami Hazard ◽  
Makran Subduction Zone ◽  
Western Segment ◽  
History Of ◽  
Splay Faults ◽  
Almost All ◽  
New Evidence

The uncertain tsunamigenic potential of the Makran Subduction Zone (MSZ) has made it an interesting natural laboratory for tsunami-related studies. This study aims to review the recent activities on tsunami hazard in the Makran subduction zone with a focus on deterministic and probabilistic tsunami hazard assessments. While almost all studies focused on tsunami hazard from the Makran subduction thrust, other local sources such as splay faults and landslides can be also real threats in the future. Far-field tsunami sources such as Sumatra-Andaman and Java subduction zones, commonly lumped as the Sunda subduction zone, do not seem to pose a serious risk to the Makran coastlines. The tsunamigenic potential of the western segment of the MSZ should not be underestimated considering the new evidence from geological studies and lessons from past tsunamis in the world. An overview of the results of tsunami hazard studies shows that the coastal area between Kereti to Ormara along the shoreline of Iran-Pakistan and the coastal segment between Muscat and Sur along Oman’s shoreline are the most hazardous areas. Uncertainties in studying tsunami hazard for the Makran region are large. We recommend that future studies mainly focus on the role of thick sediments, a better understanding of the plates interface geometry, the source mechanism and history of extreme-wave deposits, the contribution of other local tsunamigenic sources and vulnerability assessment for all coastlines of the whole Makran region.

scholarly journals Women and Gender in 1917

Slavic Review ◽  
2017 ◽  
Vol 76 (3) ◽  
pp. 694-702 ◽  
Author(s):  
Rochelle Goldberg Ruthchild
Keyword(s):  
Political Parties ◽  
Significant Issue ◽  
Women And Gender ◽  
One Dimensional ◽  
History Of ◽  
Key Issues ◽  
And Gender ◽  
Almost All ◽  
The Revolution

This paper argues for greater integration of considerations of women and gender in the history of the 1917 Russian Revolutions. Two key issues have long been discussed by historians: the spontaneity/consciousness paradigm, and the role of class in the revolution. Neither has been adequately analyzed in relation to gender. Women's suffrage has been largely neglected despite the fact that it was a significant issue throughout the year and represented a pioneering advance won by a countrywide coalition of women and men from the working class and intelligentsia, and from almost all political parties. In this centennial year, accounts of the Revolution remain one-dimensional; women remain the other.

scholarly journals What Are Predictors for Persistence in Childhood Stuttering?

2018 ◽  
Vol 39 (04) ◽  
pp. 299-312 ◽  
Author(s):  
Evan Usler ◽  
Anna Bostian ◽  
Ranjini Mohan ◽  
Katelyn Gerwin ◽  
Barbara Brown ◽  
...  
Keyword(s):  
Language Processing ◽  
Poor Performance ◽  
Nonword Repetition ◽  
Dynamic Interactions ◽  
The Past ◽  
History Of ◽  
New Evidence ◽  
Sensorimotor Processes ◽  
Speech Motor

AbstractOver the past 10 years, we (the Purdue Stuttering Project) have implemented longitudinal studies to examine factors related to persistence and recovery in early childhood stuttering. Stuttering develops essentially as an impairment in speech sensorimotor processes that is strongly influenced by dynamic interactions among motor, language, and emotional domains. Our work has assessed physiological, behavioral, and clinical features of stuttering within the motor, linguistic, and emotional domains. We describe the results of studies in which measures collected when the child was 4 to 5 years old are related to eventual stuttering status. We provide supplemental evidence of the role of known predictive factors (e.g., sex and family history of persistent stuttering). In addition, we present new evidence that early delays in basic speech motor processes (especially in boys), poor performance on a nonword repetition test, stuttering severity at the age of 4 to 5 years, and delayed or atypical functioning in central nervous system language processing networks are predictive of persistent stuttering.

scholarly journals Illuminating subduction zone rheological properties in the wake of a giant earthquake

2019 ◽  
Vol 5 (12) ◽  
pp. eaax6720 ◽  
Author(s):  
Jonathan R. Weiss ◽  
Qiang Qiu ◽  
Sylvain Barbot ◽  
Tim J. Wright ◽  
James H. Foster ◽  
...  
Keyword(s):  
Subduction Zone ◽  
Subduction Zones ◽  
Three Dimensional ◽  
Surface Strain ◽  
Postseismic Deformation ◽  
Crust And Upper Mantle ◽  
Plate Convergence ◽  
Maule Earthquake ◽  
History Of ◽  
Dependent Viscosity

Deformation associated with plate convergence at subduction zones is accommodated by a complex system involving fault slip and viscoelastic flow. These processes have proven difficult to disentangle. The 2010 Mw 8.8 Maule earthquake occurred close to the Chilean coast within a dense network of continuously recording Global Positioning System stations, which provide a comprehensive history of surface strain. We use these data to assemble a detailed picture of a structurally controlled megathrust fault frictional patchwork and the three-dimensional rheological and time-dependent viscosity structure of the lower crust and upper mantle, all of which control the relative importance of afterslip and viscoelastic relaxation during postseismic deformation. These results enhance our understanding of subduction dynamics including the interplay of localized and distributed deformation during the subduction zone earthquake cycle.

Tsunami hazard evaluation for Kuwait and Arabian Gulf due to Makran Subduction Zone and Subaerial landslides

2017 ◽  
Vol 93 (S1) ◽  
pp. 127-152 ◽  
Author(s):  
Panon Latcharote ◽  
Khaled Al-Salem ◽  
Anawat Suppasri ◽  
Tanuspong Pokavanich ◽  
Shinji Toda ◽  
...  
Keyword(s):  
Subduction Zone ◽  
Arabian Gulf ◽  
Tsunami Hazard ◽  
Hazard Evaluation ◽  
Makran Subduction Zone

scholarly journals Nationalism in the USSR: a historical and comparative perspective

2015 ◽  
Vol 43 (6) ◽  
pp. 866-885 ◽  
Author(s):  
Andrey Shcherbak
Keyword(s):  
Structural Equation ◽  
Equation Modeling ◽  
Cultural Autonomy ◽  
Sudden Rise ◽  
Multiethnic States ◽  
History Of ◽  
Entire History ◽  
History Approach ◽  
Almost All

The late 1980s and early 1990s were characterized by the sudden rise of nationalist movements in almost all Soviet ethnic regions. It is argued that the rise ofpoliticalnationalism since the late 1980s can be explained by the development ofculturalnationalism in the previous decades, as an unintended outcome of Communist nationalities policy. All ethnic regions are examined throughout the entire history of the USSR (49 regions, 1917–1991), using the structural equation modeling (SEM) approach. This paper aims to make at least three contributions to the field. First, it is a methodological contribution for studying nationalism: a “quantification of history” approach. Having constructed variables from historical data, I use conventional statistical methods such as SEM. Second, this paper contributes to the theoretical debate about the role of cultural autonomy in multiethnic states. Finally, the paper statistically proves that the break between early Soviet and Stalinist nationalities policy explains the entire Soviet nationalities policy.

Patterns of animal exploitation in western Turkey

2017 ◽  
Author(s):  
Canan Çakırlar ◽  
Levent Atici
Keyword(s):  
Aegean Sea ◽  
Potential Contribution ◽  
History Of Archaeology ◽  
Western Turkey ◽  
Anatolian Plateau ◽  
History Of ◽  
Historical Times ◽  
Human Animal ◽  
Almost All

This chapter presents a first overview of zooarchaeological research in western Turkey, a vast region between the Anatolian Plateau and the Aegean Sea. The reason for this overview is twofold. First, although zooarchaeological research began early on within the history of archaeology in the region, almost all zooarchaeological studies have been site-based, masking their potential contribution to the cultural and environmental narrative of the region and beyond. Second, recent zooarchaeological research has shown that the region carries path-breaking potential for elucidating patterns of human–animal relationships in both prehistoric and historic periods. This chapter probes the zooarchaeological evidence from the Palaeolithic through historical times and highlights the results of zooarchaeological research on topics such as Epipalaeolithic foraging, Neolithic husbandry, urban animal economies, trade, and the symbolic role of animals.

Polish Police of the General Government in the Occupational Security System of the Third Reich

2021 ◽  
Vol 143 (3) ◽  
pp. 50-67
Author(s):  
Henryk Ćwięk
Keyword(s):  
Jewish Population ◽  
Dark Period ◽  
Third Reich ◽  
The Third ◽  
General Government ◽  
History Of ◽  
The Third Reich ◽  
Almost All ◽  
Resistance Movement

After the defence war in 1939 was lost, the authorities of the Third Reich forced Polish State Police offi cers to serve in the occupier’s security structures in the General Government. This formation was used to implement various activities directed against the Polish nation. The policy of the Nazi authorities varied depending on the existing priorities in this regard. The Germans carried out brutal pacifi cation operations directed mainly against the Jewish population using Polish police. One should not forget about the harmful actions of Polish policemen against Jews. The tragic part of the occupation history of the Polish police was their participation in operations against the resistance movement. Collaboration in the Polish police was a part of this phenomenon in the General Government. The cooperation of Polish policemen with the resistance movement deserves attention. They made a signifi cant contribution to the preparation and implementation of subversive actions as well as the execution of attacks and sentences. They were present on almost all fronts of underground activity. Knowledge of the role of the Polish police in the dark period of the occupation is not satisfactory and requires further research.

scholarly journals Field surveys and numerical modelling of the 2004 December 26 Indian Ocean tsunami in the area of Mumbai, west coast of India

2020 ◽  
Vol 222 (3) ◽  
pp. 1952-1964 ◽  
Author(s):  
Mohammad Heidarzadeh ◽  
Alexander Rabinovich ◽  
Satoshi Kusumoto ◽  
C P Rajendran
Keyword(s):  
Indian Ocean ◽  
Subduction Zone ◽  
West Coast ◽  
Subduction Zones ◽  
Field Survey ◽  
Tide Gauge ◽  
Indian Ocean Tsunami ◽  
Tide Gauge Records ◽  
Makran Subduction Zone ◽  
The Indian Ocean

ABSTRACT In the aftermath of the 2004 Indian Ocean (Sumatra-Andaman) tsunami, numerous survey teams investigated its effects on various locations across the Indian Ocean. However, these efforts were focused only on sites that experienced major destruction and a high death toll. As a consequence, some Indian Ocean coastal megacities were not examined. Among the cities not surveyed was Mumbai, the principal west coast port and economical capital of India with a population of more than 12 million. Mumbai is at risk of tsunamis from two major subduction zones in the Indian Ocean: the Sumatra–Andaman subduction zone (SASZ) and the Makran subduction zone (MSZ). As a part of the present study, we conducted a field survey of the 2004 Indian Ocean tsunami effects in Mumbai, analysed the available tide gauge records and performed tsunami simulations. Our field survey in 2018 January found run-up heights of 1.6−3.3 m in the Mumbai area. According to our analysis of tide gauge data, tsunami trough-to-crest heights in Okha (550 km to the north of Mumbai) and in Mormugao (410 km to the south of Mumbai) were 46 cm and 108 cm, respectively. Simulations of a hypothetical MSZ Mw 9.0 earthquake and tsunami, together with the Mw 9.1 Sumatra–Andaman earthquake and tsunami, show that the tsunami heights generated in Mumbai by an MSZ tsunami would be significantly larger than those generated by the 2004 Sumatra–Andaman tsunami. This result indicates that future tsunami hazard mitigation for Mumbai needs to be based on a potential large MSZ earthquake rather than an SASZ earthquake.

Geometric controls on megathrust earthquakes

2020 ◽  
Vol 222 (2) ◽  
pp. 1270-1282
Author(s):  
Steven M Plescia ◽  
Gavin P Hayes
Keyword(s):  
Subduction Zone ◽  
Subduction Zones ◽  
Earthquake Hazard ◽  
Earthquake Rupture ◽  
Primary Control ◽  
Slab Geometry ◽  
Megathrust Earthquakes ◽  
Maximum Earthquake Magnitude ◽  
Maximum Earthquake

SUMMARY The role of subduction zone geometry in the nucleation and propagation of great-sized earthquake ruptures is an important topic for earthquake hazard, since knowing how big an earthquake can be on a given fault is fundamentally important. Past studies have shown subducting bathymetric features (e.g. ridges, fracture zones, seamount chains) may arrest a propagating rupture. Other studies have correlated the occurrence of great-sized earthquakes with flat megathrusts and homogenous stresses over large distances. It remains unclear, however, how subduction zone geometry and the potential for great-sized earthquakes (M 8+) are quantifiably linked—or indeed whether they can be. Here, we examine the potential role of subduction zone geometry in limiting earthquake rupture by mapping the planarity of seismogenic zones in the Slab2 subduction zone geometry database. We build from the observation that historical great-sized earthquakes have preferentially occurred where the surrounding megathrust is broadly planar, and we use this relationship to search for geometrically similar features elsewhere in subduction zones worldwide. Assuming geometry exerts a primary control on earthquake propagation and termination, we estimate the potential size distribution of large (M 7+) earthquakes and the maximum earthquake magnitude along global subduction faults based on geometrical features alone. Our results suggest that most subduction zones are capable of hosting great-sized earthquakes over much of their area. Many bathymetric features previously identified as barriers are indistinguishable from the surrounding megathrust from the perspective of slab curvature, meaning that they either do not play an important role in arresting earthquake rupture or that their influence on slab geometry at depth is not resolvable at the spatial scale of our subduction zone geometry models.

scholarly journals ASSESSMENT OF OPTIMUM VALUE FOR DIP ANGLE AND LOCKING RATE PARAMETERS IN MAKRAN SUBDUCTION ZONE

2017 ◽  
Vol XLII-4/W4 ◽  
pp. 523-529
Author(s):  
A. Safari ◽  
A. M. Abolghasem ◽  
N. Abedini ◽  
Z. Mousavi
Keyword(s):  
Subduction Zone ◽  
Subduction Zones ◽  
Arabian Plate ◽  
Eurasian Plate ◽  
Makran Subduction Zone ◽  
South Eastern ◽  
Best Value ◽  
Proposed Model ◽  
Sparse Measurements ◽  
Dip Angle

Makran subduction zone is one of the convergent areas that have been studied by spatial geodesy. Makran zone is located in the South Eastern of Iran and South of Pakistan forming the part of Eurasian-Arabian plate's border where oceanic crust in the Arabian plate (or in Oman Sea) subducts under the Eurasian plate ( Farhoudi and Karig, 1977). Due to lack of historical and modern tools in the area, a sampling of sparse measurements of the permanent GPS stations and temporary stations (campaign) has been conducted in the past decade. Makran subduction zone from different perspectives has unusual behaviour: For example, the Eastern and Western parts of the region have very different seismicity and also dip angle of subducted plate is in about 2 to 8 degrees that this value due to the dip angle in other subduction zone is very low. In this study, we want to find the best possible value for parameters that differs Makran subduction zone from other subduction zones. Rigid block modelling method was used to determine these parameters. From the velocity vectors calculated from GPS observations in this area, block model is formed. These observations are obtained from GPS stations that a number of them are located in South Eastern Iran and South Western Pakistan and a station located in North Eastern Oman. According to previous studies in which the locking depth of Makran subduction zone is 38km (Frohling, 2016), in the preparation of this model, parameter value of at least 38 km is considered. With this function, the amount of 2 degree value is the best value for dip angle but for the locking rate there is not any specified amount. Because the proposed model is not sensitive to this parameter. So we can not expect big earthquakes in West of Makran or a low seismicity activity in there but the proposed model definitely shows the Makran subduction layer is locked.

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