Journal of Geography and Regional Development
Year:2008 | Volume:- | Issue:10|Papers Count:11

The alluvial fan of Shahdaad in Derakhtangaan River is one of the biggest alluvial fans in a dry area in northeastern Kerman. This alluvial fan has been formed due to different material erosions in the drainage basin of Derakhtangaan River and lying of these materials in the extreme part of this basin called Dasht-e-Lut (the plain of Lut). The region which has been studied in this research is one of the active tectonic regions. Several evidences prove the severe tectonic activities in the region. One of the most important evidences is the existence of various faults in the area. The most important fault of the region is the great fault of Neyband, the southern fault of Shahdaad and a series of faults having the direction of northwestern southeastern and northern southern. With an analysis of the time period and relative arrangement for the creation of faults, this research tries to recognize the role of tectonic in the formation and movement in successive divergence focuses of alluvial fan of Derakhtangaan River. The results of the study show that Neyband fault is one of the oldest, but the movements have caused a breakdown on the head of alluvial fan at Chahaar Farsakh and red Marn has created deep gullies in the region.

While studying rural tourism of big cities, we will face two different but related discussions. One of these discussions is about the purposes of tourism. It means the villages and rural areas in which tourists choose to spend their free and leisure time. These rural areas are considered as tourism productions. The other discussion is the issue of accessibility. Tourists choose villages and rural areas that have tourist attractions and are not located far away from their residences. The present article has chosen the big city of Mashhad as its case study. It then studies the issue of accessibility of rural areas as tourism productions and the area of tourism influence. The results of the study show that the area of tourism influence in the big city of Mashhad is something about 43/20 Km. and the villages and rural areas that are located within this domain are considered as tourism attractions.

Due to its complexity and destructive nature, convection has been subject of many studies and researches among weather phenomena throughout the world. Scientists have attempted for decades to generate different types of models to provide the possibility of abating or, at least, reducing convective weather phenomena effects on people’s lives. In south or southwest of Iran, people are familiar with convective phenomena and their effects. Due to socio-economic importance of convective phenomena and availability of a meso-scale (MM5) model in Iranian Meteorological Organization, it has been tried to investigate the ability of the model to simulate and to predict convective precipitation in south and southwest of the country. The results of the study show that the model produces acceptable results on convection that arises from sharp baroclinic, but it has failed to produce acceptable results where convection is due to local conditions.

Hydromorphology is a branch of physical geography which deals with the forms created by running water, especially rivers. The recognition and explanation of Hydromorphological factors and their action on the primary structural surface of Lileh Javaan Roud drainage basin and making applied maps are important for the recognition and implementation of environmental management of the basin. The significant role of running water is shown in the investigation of geology, climatology, physiography, hydrology, soil, vegetation and analysis of influent factors in making forms and processes and the existing landforms in the basin. The role of human being as an intensifying figure of erosion and development of new forms such as land slide and gully erosion is also important. The influential function of running water on the structure of drainage basin shows the important effect of the paleoclimate. The destruction of agricultural lands, the development of gullies, and the increasing destructive power of floods are some examples of the factors affecting the life of people in this area.

The distribution and dispersion of urban green spaces are of great importance. Khorram Aabaad is a city which lacks an appropriate distribution of green spaces and this is far from the standards of UNEP which is 20-25 m2 of green space per capita. The green space in this city is 11.3 m2. Some regions in this city are without any kind of green spaces but some other regions have more green spaces. To compensate this bioenvironmental and recreational loss, an evaluation of the regional lands is needed. The following criteria are used for the evaluation of the lands: being located in barren fields, proximity to educational, cultural and population centers, proximity to urban establishments, access to communication network and the distance from parks and green spaces. To locate the appropriate places for parks and green spaces, GIS Model is used. The results show that the best quality lands were located near river sides, in empty regions inside the city, lands owned by the government or where there is no concentration of buildings.

Khorasan Province has a dry and semi-arid climate. This condition is the result of lack of annual rain in the long term. The three models of synoptics are very important in the formation of this drought in Khorasan Province; among them, anticyclones are the most important ones. 61/6% of the drought in Khorasan Province is the result of the activity of anticyclones. The writer of this article studies the effect of this phenomenon on the continuous drought in Khorasan Province.

The purpose of this article is to arrange the inappropriate network of rural housings; in order to stabilize the rural population. To do this, the writers of the article have used the factor and cluster analysis methods. They have also used place allocation model in the environment of GIS. The statistical analysis shows that the area does not have an appropriate applicative structure. In order to create an applicative hierarchical arrangement of rural housings, information layers were analyzed in GIS environment and the place allocating model were used based on the criteria of distance and accessibility. Based on the above mentioned analysis, rural housings were divided into four levels of systems, collections, areas and series. 

Cheshmeh Gerow (The spring of Gerow) is one of the exceptional and interesting hydro-morphotectonic and hydro-geomorphic phenomenon, which is located 33 Km. south of Mashhad. Because of its activity during the Quaternary, large piles of travertine have deposited which morphologically; have formed very beautiful and interesting land forms. Some of these forms are the cones that are very similar to volcanic cones, miniature forms and others. There are different suggestions about the origin of this spring; and the present article has found a reasonable answer for the creation of the spring and the different landforms resulted from it.

It is a serious point to put sustainability into effect with the intention of healthy environment. Health, according to the United Nation Development Program (UNDP) is one of the important indicators which shows development level in each country. Health is extremely meaningful and is associated with a great part of urban and regional planning policies as a main aspiration. It also contains many factors like quality parameters and healthy environment for cities or rural regions. This paper tries to clarify the definition of health in urban and regional planning literature. The results of the study show that the northern zone of Mashhad, Ghorghi village in Tabadkaan, some parts in Mayamey and around Jim Aabaad and Narimany villages are in a great danger from health view point. Some other places are Toos village and peripheral lands of Mashhad-Chenaaraan highway, Main Velaayat, Bizaky and Chenaaraan. In the future programs of development in these areas, health status should be considered.