List of Articles earthquake

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  1 - The Study of Urban Textures Vulnerability against the Earthquake Crises (Case study: Region 8 Municipality of Tabriz)
    Saber Abdollahzadegan
  One of the issues that most cities of the world are involved is natural disasters.The need to reduce vulnerability of cities against natural disasters such as earthquakes can be considered as one of the main objectives of urban planning and urban designing.Therefore, th More

  One of the issues that most cities of the world are involved is natural disasters.The need to reduce vulnerability of cities against natural disasters such as earthquakes can be considered as one of the main objectives of urban planning and urban designing.Therefore, the present study aims to identify the vulnerable pieces of district 8 of Tabriz against earthquake.In this study, 9 indicators of population density, building density, land usage, microlithicity, access to relief centers, open space, quality of materials, quality of buildings and distance from risk making centers were selected.Then, by the use of ANP method and combining the related criteria in GIS environment, vulnerability of the district 8 of Tabriz was investigated.The results showed that more than 43% of the parts of district 8 of Tabriz have high and very high vulnerability against earthquake that high vulnerability can be seen in old quarters due to the very narrow and dead-end passages, small and breakable parts, old buildings with less durable materials and neglected building privacies.According to the zoning map, about 15.84 percent had average vulnerability and 29.94 percent less vulnerability.Considering the vulnerability of the district, proper planning to organize the mentioned buildings is needed. Manuscript profile
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  2 - An Estimation of the Trend of City Horizontal Expansion within Seismic Faults and natural Risky Regions and its Consequences (Case Study: Saqqez county in Kurdistan province)
    abdolah tayari   Mohammad Ali Salari Kamangar
  A review on different research about human habitats indicates that geology structure and environmental characteristics have affected city establishment and dwelling selection. With this in mind, the place of establishment (plains, foothills, so an) of a greater part of More

  A review on different research about human habitats indicates that geology structure and environmental characteristics have affected city establishment and dwelling selection. With this in mind, the place of establishment (plains, foothills, so an) of a greater part of human habitats generally and urban habitats specifically has encountered such phenomena as quakes, landslides due to its relative proximity with the faults. The occurrence of numerous earthquakes in different places of the country within recent decades and their negative consequences especially on urban centers is a clear proof to this argument. Saqqez city in Kurdistan province due to its location with the proximity of many faults (Saqqez river faults, Valikhan river, Sonata and so an) is one of the places that from one hand the natural sea-bed features of its location has caused the possibility of accessibility to this property. From another perspective the horizontal expansion of the city in direction of above-mentioned faults has increased the accessibility. Now this writing tries to investigate the horizontal and physical development of the city in wake of quakes. For this respect, by using Topography – digitally maps and geology at the scale of 1:250000 and by using geographic information systems including Arc GIS and Arc view soft ware's and historical seismographic data , the isoseismic curve maps and expanse measurement of quake risk have been delineated. The results of the research hold that in accordance with seismography map and examining the quake occurrence timing in the region, there is a higher possibility of earthquakes in Saqqez. Most importantly, the city has been developing hastily towards unstable heights and minor faults in western and northern parts. An accordingly editing strategic and essential measure in the course of reducing quake risks by optimum orientation towards horizontal expansion is absolutely crucial. Manuscript profile
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  3 - Investigating the role of topography in magnifying seismic effects in the Kalat Naderi area
  Mohammad mohammadnejad leila goli mokhtari Abolfazl bahniyafar
  Abstract Natural disasters annually cause an average More than a thousand billion damages to the country. According to experts, Iran is one of the most prone areas of the earthquake and according to official statistics in the last 15 years, 6% of the earthquake casualt More

  Abstract Natural disasters annually cause an average More than a thousand billion damages to the country. According to experts, Iran is one of the most prone areas of the earthquake and according to official statistics in the last 15 years, 6% of the earthquake casualties were earthquake. In this regard, assessing the seismic vulnerability of different regions of the country in order to reduce the vulnerability of urban communities should be a priority in planning. The purpose of this study was to investigate the role of topography in magnifying seismic effects in the Kalat-Naderi area of Khorasan Razavi province using Pessina et al. In this regard, first, the digital elevation model of sites prone to magnification of geomorphological effects was investigated. These effects included: ridge, peaks, hills, valleys with features such as slope shape, as well as slope and elevation difference. GIS functions were also used to classify critical areas. The resulting maps can be used to assess large-scale topographic areas of risk and earthquake risk. According to the results of the study, out of the total study area, 74.71% were in the range of low magnification, 21.12% in high class and 4.15% in high class. Manuscript profile
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  4 - Seismotectonics of the west of Golestan province, the east of south Caspian region
  Maryam Agh-Atabai Marjan Tourani
  Golestan province is located in one of the seismically active zones of Iran. The seismicity maps of Golestan province show that density of earthquakes in the west is more than the east. In this research, the parameters including b-value, recurrence time and seismic mome More

  Golestan province is located in one of the seismically active zones of Iran. The seismicity maps of Golestan province show that density of earthquakes in the west is more than the east. In this research, the parameters including b-value, recurrence time and seismic moment were studied to investigate the seismicity of the west of Golestan province. The focal mechanism of earthuqakes and field data were used to determine the stress orientations in the study area. The estimated b-value is obtained as 1.24±0.2 which is comparable with the Alborz. Since the northern and southern parts of the study area have different geomorphological and structural characteristics, some of these parameters were calculated for two subdivisions; Dasht-e-Gorgan in the north and foothill in the south. Results of this study show that the earthquakes in the Dasht-e-Gorgan compared to the foothill are smaller with shorter recurrence times. For the foothills, the calculated P-axes using the stress tensor inversion method is found to be subhorizontal with trend N-NNE. For this region, at least two trends, N and NW, is calculated using field data. This result show the change of stress directions during the structural evolution of this area. The calculated p-axes trend for the Dasht-e-Gorgan is NE. In both studied areas, the focal mechanisms of greater earthquakes are consistent with the E-W to NE-SW trend of main faults especially the Khazar fault. But, the smaller events in the Gorgan Plain show a different trend and mechanism. Comparison of these two subdivisions shows that the northern Alborz foothill is more dangerous than the plain. Manuscript profile
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  5 - The Relationship between mental Security, Social support and Resiliency With Post Traumatic Stress Disorder (PTSD) in the earthquake-affected adolescents In Sarapol-eZahab city
  پروانه شجاعی مهر khodamorad momeni جهانگیر کرمی
  The aim of the current study was to study the relationship between mental security, social support and resiliency with post tramatc stress disor. in the earthquake-affected adolescents In Sarapol-eZahab city. the population was the earthquake-affected adolescents in Sar More

  The aim of the current study was to study the relationship between mental security, social support and resiliency with post tramatc stress disor. in the earthquake-affected adolescents In Sarapol-eZahab city. the population was the earthquake-affected adolescents in Sarapol-eZahab city. Thus, 130 student at sarpol-e zahab city girls and boys high schools were chosen by available sampling and Targeted with research topice as a sample. The research method, was Descriptive of the type correlation and the study tools included mental security logbook (Aminpour (2007) Retrieved from Maslow (1973), social support scale Sherborne and Stewart (1991), Conor & Davidson resiliency Scale (2003) and revised scale The events impact of the Weiss and Marmer (1997). The Data Was analyzed by using pearson correlation coefficient And stepwise regression analysis. Results revealed that, between mental Security Whit post-traumatic stress disorder, between social support and ptsd and between resiliency with ptsd there was a negative relationship. Manuscript profile
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  6 - The Relationship between Mental Security, Social Support and Resiliency with Post Traumatic Stress Disorder (PTSD)
  Parvane Shojaeimehr Khodamorad Momeni Jahangir Karami
  The aim of the current study was to study the the relationship between mental security, social support and resiliency with post traumatic stress disorder. Thus, 130 students in Sarpol-e Zahab city who were at high schools were chosen using convenient sampling method More

  The aim of the current study was to study the the relationship between mental security, social support and resiliency with post traumatic stress disorder. Thus, 130 students in Sarpol-e Zahab city who were at high schools were chosen using convenient sampling method the sample was proportional to demographic share of each region. The research method, was descriptive and correlation, and the scales included were Mental Security Logbook (Aminpour-retrieved from Maslow, Social Support Scale Sherborne and Stewart, Conor & Davidson Resiliency Scale and revised scale The Events Impact of the Weiss and Marmer. The data was analyzed using pearson correlation coefficient and multiple regression analysis. Results revealed that, there was a negative relationship between mental security with post-traumatic stress disorder, between social support and ptsd, and between resiliency with ptsd. Manuscript profile
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  7 - Explanation the Dimensions and Components of an appropriate pattern of Earthquake Disaster Management in Deteriorated Urban Areas in Tehran city
  asad razani Kamal Nozari Mojtaba Rafiyan
  Due to the high vulnerability of deteriorated urban areas, a systematic precaution is needed to provide features and components of an effective pattern for disaster management in these areas that clarify the dimensions of decision-making in earthquake risk management in More

  Due to the high vulnerability of deteriorated urban areas, a systematic precaution is needed to provide features and components of an effective pattern for disaster management in these areas that clarify the dimensions of decision-making in earthquake risk management in them. The purpose of this research is to investigate the dimensions and components of an appropriate disaster management pattern in deteriorated urban areas in order to control and reduce the damage caused by the earthquake in the period before its occurrence (prevention stage) in deteriorated urban areas in Tehran. The research method is applied in terms of purpose and descriptive-analytical in terms of method, and because it tries to establish a relationship between the dimensions and components of earthquake disaster management in deteriorated urban areas, it is exploratory. After identifying the dimensions and components of the disaster management pattern in deteriorated areas in documentary studies (theoretical foundations, Iranian and global experiences). It has been accurate and prioritized by referring to experts and proprietors. In the next step, the coefficient of significance of each component is specified and the results of the questionnaires evaluated and validated in content by using the PLS software. The results of the research show that in the field of disaster management in the deteriorated urban areas of Tehran. It is necessary to have a risk management and pre-thinking and pre- disaster management view before looking at the disaster management with a post- disaster view in these areas. In the pre-disaster stage, attention to different dimensions and considering the effective components of each of these dimensions in disaster management (social and cultural, physical-environmental, economic, structural and managerial, legal- rule and infrastructures dimensions) in deteriorated urban areas and their application can ultimately lead to decreasing vulnerability and promoting the resilience of these area in the face of various events, including the earthquakes. Manuscript profile