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Showing 7 results for Type of Study: Applicable

Mojtaba Yamani, Afsaneh Ehdaei, Samaneh Riahi,
Volume 2, Issue 3 (4-2014)
Abstract

Geomorphotourism is one of the fields of geo science and tourism studies and is considered as a branch of Ecotourism in which Geomorphologic and geological attractions are more considered by the tourists. Alamut Valley is a region where has a variety of natural phenomena in addition to cultural monuments and each of them are able to attract countless tourists. In this study, by using satellite images, geological maps and field studies, the number of landform of Alamut valley with more geo-tourism attractions were identified and their capabilities based on Comanescu an Amrikazemi models were evaluated. The results show that all the studied Landform, has regional and national importance. Also some unique geoarcheological features of Castle and Cliffs of Hassan Sabbah have given international value to it. On the other hand, the nature of dominate studied landforms is related to the areas of environment and ecotourism. Also based on Comanescu model, aesthetic, scientific, cultural, economic and administrative features of landforms were investigated and the results indicated that Ovan lake has the greatest potential in order to geotourism activities due to the geomorphologic diversity and beautiful natural attractions and high scientific and cultural value .Then, Castle and Cliffs of Hassan Sabbah, Alamut River, Garmagaloo Valley, Andaj Cliffs and Garmarud Waterfall, are in the next ranks.


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Volume 2, Issue 4 (10-2014)
Abstract

Geomorphic processes and phenomena, indicated the relationship between the internal and external dynamics and earth resistance (lithology and structure) are That act over space and time. Force and resistance over time and space, causing displacement of geological materials Occurrence and geomorphic processes and forms are rough environments. Accordingly, the forms and processes that govern the Earth's surface, has a lot of complexity and breadth. Scale geomorphic mapping geomorphic processes and phenomena that are defined in the context of space and time. in which Environment systems are affected. In this connection coastal systems as one of the most complex and dynamic environment systems as a cross between sea and land is defined by the system. Erosion and sediment yield in the cross reaction with exogenous variables that arises due to natural and human factors and each works in a range of different spatial and temporal scales. In this paper, the problem of scale, importance and classification, it has been tried time and space spatial scale systems and processes in coastal and its application in environmental management are examined. In this regard, according to the classification of coastal processes and spatial scale of the space. Results showed that the time scales and spatial understanding of coastal processes and forms a prominent role in environmental management and planning Such as hazard maps of coastal geomorphic and coastal systems will respond polls. Influence the time domain and space are different forms and Coastal Processes and hence planning in local, regional and national planning is essential to deal with the processes must be defined according to their scale.


Azra Khosravi, Sadegh Asghari Lafamjani, Marzie Alipour,
Volume 2, Issue 4 (10-2014)
Abstract

Abstract Natural factors such as water resources, climate, topography, etc… play an important role in site selection specifically rural settlement where people's way of living mostly depends on the environment. In this study we classified one of the sub-catchments of the central desert of Iran, called Bardaskan and analyzed the local position of villages. During this process, first the effective parameters in site selection of villages were determined and gathered in ArcGIS 10 and the relevant maps were developed. Then, defining fuzzy operator, the fuzzy inference network is developed in order to obtain the final image. By evaluating the relevant criteria, the region was divided into 5 classes of relatively weak, weak, intermediate, relatively proper, and proper. Finally, the current position of settlements in proportion to these classes is assessed. The results of findings showed that from a total of 71 villages, 36 were in the relatively weak class, which means 50.7 percent. But 54.92 percent were in the intermediate class. As the area increases, more unfavorable environmental situations are observed. 2000 square kilometers (80 percent) of the area out of the total area (2500 square kilometers) are in the weak to relatively weak classes. Keywords: fuzzy logic, Rural Settlements, village, central desert, Bardaskan


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Volume 2, Issue 4 (10-2014)
Abstract

Introduction Weathering is defined as the “break down or alteration of rock in its natural or original position at or near the Earth̓ s surface through physical, chemical and biological processes induced or modified by wind, water and climate”(Reiche,1950). The two variables that define weathering are the Mean Annual Temperature and the mean annual precipitation. Together, these two variables can be used to define a regions weathering type. Peltier defined seven graphs using these two variables that described different types of weathering phenomena, they are chemical weathering, frost action, weathering regions, pluvial erosion, mass movement, wind action and morphogenetic regions. Tehran, Alborz provinces are located between latitudes 34 to 37˚ N and longitudes 50 ° to 53 ° E. The goal of this study is to create maps of the continental Teharan and Alborz for each of Peltierʾs graphs. Materials and Methods In this study for investigation the weathering and morphogenetic regions at Tehran and Alborz Provinces, datasets of mean annual temperature and mean annual precipitation, obtained from the website of Meteorology organization. About 42 stations which have appropriate data period (2000-2010) were selected. Then a database in GIS environment was created and the data were recorded in the GIS software. Then using peltiers model, DEM and Synoptic stations record and pluviometry, were identified weathering processes in the study area. Results and Discussion Due to the topographic position of Tehran and Alborz and also geomorphology, climate, urban users, there are spatial variations in weathering conditions. The purpose of this research is to identify it. Temperature and precipitation in the region is more dependent on latitude. Most precipitation is 750 mm per year. Minimum temperature can be seen in the north of Tehran. The maximum temperature can be seen in Southern Province due to the proximity of the desert which highest value is 18 ° C. Most precipitation is owned mountainous areas in the north of Tehran that Savanna and semi-arid areas of the morphogenetic action. Geomorphodinamic characteristic of these areas, are average effects of the prevailing winds and moderate to severe weak to severe Current water activity. Northern part of the study area is located in semi-arid regions. Geomorphodinamic characteristic of these areas, are the effects of wind and moderate to severe Current water activity. Southern part of the study area due to high temperature and low precipitations are located in arid regions and the most important Geomorphodinamic characteristic of these areas, are the effects of wind, Current water activity and weak mass movement. Conclusion The results showed that among seven weathering models in Peltier model, three models happened in the climatic conditions of Tehran and Alborz. So that the in most parts of mountainous regions there is weak weathering. In north of Tehran due to heavy precipitations and high temperature, Chemical weathering is more moderate type. While weathering in most parts of the study area is mostly very gentle.


Dr Ali Ahmadabadi, Dr Amir Karam, M.a Student Mohsen Pourbashir Hir,
Volume 3, Issue 5 (4-2015)
Abstract

Map of runoff potential, have various applications in the Hydrogeomorphology, including identifying potential of flooding, erosion and sediment yield a conditions. Often sub-basins as a study unit is used for this purpose. but The sub-basins have not homogeneity conditions in the vegetation and topography to calculate the producing of runoff. In this study, a new approach, hydrologic response units (HRU) was introduced as a unit of work, and Gare-Soo basin and also feature identification and extraction of the runoff is calculated separately for each unit. and the ability to produce runoff using the Soil Conservation Service (SCS) has been done. The results of study, sixteen of hydrologic response to Gare-Soo basin shows that each unit has the same geomorphology, topography and vegetation. The eight hydrologic response units due to the high potential of producing runoff, with most processes water excavation and scour phenomenon was detected that the type of land use has a significant role. It seems that using of the hydrological response unit, as a unit of work is more effective in accurate identification in the basin runoff ability and erosion conditions.
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Volume 3, Issue 5 (4-2015)
Abstract

Geopark have great potential in terms of geotourist attracting. Island of Qeshm as the largest Island in the Persian Gulf has High ecotourism potential. Qeshm geopark just as only geopark in Middle East with special and rare geological heritage and international importance was Located on the island of Qeshm. This paper evaluates the geomorphotourism potential of Qeshm geopark. In order to describe this geosite have been used the topographic and geological map, satellite images, Field studies and to evaluate geomorphotourism ability of this geosite in terms of geotourist attracting have been used prolong method. The results showed that Stars Valley with a value average of 77% and the productivity average 68% is the highest geomorphotourism value. Because of the high potential in the field of physical beauty, scientific, economic, historical, cultural, social value, area Geosite have great potential in the field of geotourism. Lack of infrastructure is the main cause of not getting it organized. Geosite organization and management has paved the way Geotourism development of Qeshm geopark
Dr Abolghasem Amirahmadi, Mrs Malihe Mohammadnia, Mrs Liela Solgi,
Volume 3, Issue 5 (4-2015)
Abstract

landslides are such as risk of mountainous areas that every year Imports a lot of damage on country economy. In recent years, natural and human factors Has caused Exacerbate the damages caused by landslides . One of the ways to reduce the damage caused by landslides is to avoid risk zones. For this purpose is necessary, risk maps for these areas be provided up any construction and development carried out by it. Main purpose this study is identify Effective factors of landslide occurrence in Darrud basin and Assessment areas with potential landslide for mapping using analytic hierarchy process and frequency relative method. In this regard, The first ten factors of landslides in the area were identified And using Arc GIS software raster was prepared and classification. Weights criteria using the Analytic Hierarchy Process and sub-criteria weights using frequency relative determination and landslide susceptibility map was prepared. Map produced using ROC curve was tested and it was determined that mapped by area under the curve 81/0 has the power to predict the landslide hazard assessment is very good. Slope 40 to 60 degrees, concave slopes, elevations less than 2,000 m, range between 300-330 mm rainfall, between 100-200 meters from the river, 0-100 meters from the road, 100-200 m of the fault, and northeast slopes and the gardens the greatest weight is given to them self. Also Factors aspect, land use and roads were identified as the most influential factors.



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ژئوموروفولوژی کاربردی ایران Applied Geomorphology of Iran
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