This research, aiming to offer guidelines for organizing Kiashahr harbor physical development has been carried out based on GEOMORPHOLOGICAL capabilities, by using Gis instrument. To achieve this objective, information are collected and maps, aerial photographs and satellite pictures and various statistics are used as research instrument. Then by means of field observations and employing natural and human factor variables their processing was accomplished in geographical information systems. Area divider maps of various aspects such as flood, coastal lines, earthquake amplitude movements and different regions variation were employed for Kiashahr region physical developments and retreating from dangerous areas. Then based on mentioned factors have been suggested physical development directions of coastal rig ion of Kiashahr.

The effects of soil erosion plays a role in incidence of dangerous floods, rapid loading of dams and destruction of farmlands, and prevents the occurrence of floods as well, important measures need to be adopted in order to prevent its store from being loaded. The purpose of the present study was to study the GEOMORPHOLOGICAL problem of the mentioned dam, the role it plays in production of sediment and its effect on Nam Rood Dam in Ghazghinchai Basin, with focus on degree of erosion and the amount of sediment produced. Ghazghinchai Basin is located in south of Central Alborz Mountains, North-Eastern Tehran Province, and is one of the sub-basins of Nam Rood River and covers an area of about 144.235 km2. In order to study the amount of erosion and the sediment produced in the basin under investigation, first the variables effective in erosion were analysed by GIS softwares, through direct observations, field work and indirect observations including satelite images, air photos and climatic and hydrological data. And finally in order to achive our intended purposes such common methods of estimating erosion in sediment the Besyak Model were used. Technique of giving scores and integrating layers were also used to estimate the amount of erosion in basin under investigation. The results show that the annual amount of sediment poduced in the basin is around 14011.24 tons per km2. The findings also indicat that the major proportion of this amount of sediment is produced from the central parts of the basin which lie in the show area with high degree of erosion, as show by the results of our zoning.

The development of settlements has led to the identification of suitable locations for urban development goals as one of the priorities of urban planners. Accordingly, the present study tries to explore the natural environment of the city of Harsin for the development of residential areas with a view to future development. The present research is based on library, field and software methods. In this research, eight criteria included Elevation, Slope, Aspect, Distance from the River, Distance from Fault, Lithology, Road and Land use has been used. The research methodology is a combination of the preparation of information layers in the ARC GIS environment, Standardization by Fuzzy Logic and Weighing in the form of AHP model and zoning using two models of OWA and WLC. The results showed that the present and current urban area in terms of environmental and GEOMORPHOLOGICAL PARAMETERS in the research is in good relative condition and based on the models used by OWA and WLC, it is 8. 8 and 9. 6 square kilometers, respectively. Nevertheless, there are inappropriate areas in the direction of urban development and urbanization of Harsin which often include mountain units and high Slope region, Rivers and Faults. The final result of the research also indicates the significant role of geomorphic units in the formation of urban systems And on this basis, we can say The present study, with the existing system-based comparative approach, is an effective model for managing the development of around-cities areas in the future.

Aims & Backgrounds Understanding the GEOMORPHOLOGICAL issues depend on the type of researcher’ s perspective. The habit of today is that what is seen can be taken as a whole and treated as a system. However, what is considered as a whole and a system is only a part of a complex system and it has played a role in landform evolution and even if it considered as a hole, it lacks of environmental body. This study aimed to investigate the GEOMORPHOLOGICAL challenges of systematic attitude. Methodology The methodology of this research was based on the analysis and explanation. With this approach, first, through the knowledge of available research on GEOMORPHOLOGICAL systems and the strengths and weaknesses of the results of a systematic approach in geomorphology studies, the available resources in relation to science and philosophy of science were investigated and they were analyzed from the modernity to postmodernity era. Discussions on space analysis, especially in geography, were reviewed. Finally, the combination of findings from the above sources was analyzed and explained considering the GEOMORPHOLOGICAL studies in Iran over the last few decades. Findings The necessary condition to be beneficial of scientific research for human society is revealing a small part of the real world unknowns. It is true that human knowledge is always incomplete and imperfect and remains incomplete and as the point of human life has been revealed, the background to the emergence of many unknowns has been provided; but in the light of the same incomplete sciences, human has succeeded in inventing and constructing a lot of things that have made life more accessible. Usually, phenomena occur in geomorphic domains and they are appearing in geomorphologic basins. Conclusion The best way to understand the general geomorphic events is to select the number of separate geomorphologic landscapes that operate on a certain part of the planet and put them together in order to examine the effectiveness of their obvious and hidden layers in the development of landforms in a comprehensive and precise manner.

The Tabriz fault, is a strike-slip fault, that stretches from Zanjan-Soltanieh mountains in Iran, to Ararat mountains, in Turkey. Along this fault, from Bostanabad to Salmas, are different geomorphologic phenomena that contain displaced and cutting floodways, height difference and forming of scarpment, fault valley, fault spring, natural pools, and Urumieh Lake. This lake is an important phenomenon of Tabriz fault activity. Urumieh Lake before forming, connected to Gotur Chay and Aras river by a channel. This channel, is in northeast of Salmas and in north of Urumieh Lake. these features determine Tabriz fault from Bostanabad to Salmas. The purpose of this research is about distinction of geomorphogical consists which were formed from Tabriz fault and especially the formation of Urumieh Lake. The method of research consists studying of satellite images, aerial Photographs, geological and topographic maps and field geology.

Flooding is one of the major environmental hazards within the last century that widespread around the globe. Flooding is often thought of as a result of heavy rainfall, but different geomorphic and hydrologic systems have a different response to the precipitation. The main goal of the research is studying of flooding in the Maroon Catchment that severe flooding has been inflicted great losses in the agricultural, residential and deaths sectors over the past years. Usually, after any heavy rainfall, flooding will be expected. Maroon Catchment has located in the in the Kohgiluyeh and Boyer-Ahmad province, between 30° 40´ to 31° 20´ of northern latitudes and 50° 5´ to 51° 10´ of eastern longitudes. To evaluate the various effective hydro geomorphologic PARAMETERS on flooding in the basin, we specified 18 different variable, but according to cluster analysis and multivariable regression models, effective PARAMETERS on the flood in the region were summarized in 6 factors includes: area, perimeter, and width of the equivalent rectangular, the total length of the drainage network, the length of the basin and average flow length. After choosing variable, standardization of them and using different methods, subcatchment were separated. According to, sub-catchment divide to four homogeneous groups, each group contain some sub-catchment as follows: group 1 includes 1, 2, 3, 4, 7, 8, 9, 17, 10, 20sub-catchments; group 2 includes 5, 6, 11, 14, 16 sub-catchments, group 3 includes 12, 13, 15, 19sub-catchments, and group 4 include 18subcatchment. On the basis of the PARAMETERS and also analysis of them, we were observed that the sub-catchment of the 1 group had severe floods, the 2 group with medium floods, the 3 group with low floods and the 4 group with the intensity of floods.

The main objective of this study refers to zone Arak city by using GEOMORPHOLOGICAL PARAMETERS of the fuzzy logic model. In order to fulfil these objectives, 10 PARAMETERS such as effective height, the distance from fault, the distance from the main channel, the distance from sub-channel, distance out of the way of communication, slope percent, distance from settlements, topography type, land erosion and seismic vulnerability in the form of raster and vector maps were prepared. Each raster layer was defined based on research studies and expert's opinion. But being in a range of vector layers 0 and 1 did not need to be defined. After applying the functions, operations, multiplication, addition and different values of gamma phase were also performed on the layers. So, ARC GIS 9.3 and ERDAS 9.1 software were used. Since, comparison analysis has been done between the suitable arenas to real situation of city according to the critical arenas and suitable arenas of the gammas quantities. Based on finding, the fuzzy gammas have been in match with the most suitable lands of the town. The results indicated that two stations in the West and the East of County seemed suitable for the future development of Arak, but the north and northeast arena of city were the first priority at present time. At last, the final map was classified to 5 classes: very low portion 2189, low proportion 389, medium proportion 593, high proportion 552 and very high proportion 381 with a great square kilometers were defined, respectively.

Introduction: Nearly two-thirds the area of the country is desert. Playa or holes as well as units from the desert area of Iran occupy substantially and Due to their economic and ecological potential and requires careful and thoughtful be evaluated. Meyghan is a playa. Playa undeniable importance of studying in Iran. The other side is located near the city Meyghan and GEOMORPHOLOGICAL undeniable impact on the city and other nearby towns led to this research, studied watersheds. Overall, in this study, the landforms are identified. The active processes are assessed to identify areas Morphogenetic and morph tectonic. In the next stage due to a bug off and heritage areas Morphogenetic climate in the climate of the last glacial period, these territories will be determined in the past. Finally, based on changes in landforms checked. According to a survey by researcher of research on these topics in our country is very small compared with the world…

The nature of most of the external forms and processes of the earth depends on the climatic conditions prevailing over a region over time. Therefore, by studying the geomorphology of various environmental phenomena, it is possible to reconstruct the past climatic conditions. The purpose of this study was to identify the geomorphologic evidence of quaternary climate changes in Meyghan playa. To this end, the required information layers were prepared, or satellite images from IRS and ETM were extracted, and the Meyghan basin's geomorphology map was drawn up based on them. Then, the ancient Meyghan playground was reconstructed by analyzing four glacial, climatic, human and laboratory indicators on 11 sedimentary samples, the results of which illustrated the role of wind and water processes in sediment transport. Also, an elevation of 2400 meters was considered a good place for the formation of glacial circuses. In general, one can claim that the climatic conditions governing beige are in the Quaternary wet periods; most of the present sediments of the playa belong to volcanic rocks and shale margins of the basin. Also, due to the poor selection of samples, the waves did not have much activity in most of the courses, and sediments were formed in a slow melting environment. The existence of mineral Elite in most sedimentary samples indicates the much larger dimensions of the lake in the past, and lower amounts of hematite in some specimens indicate the deposition of sediments from the water, the evolution of the climate towards the present warm and dry conditions, and the conditions for the oxidation of sediments during Time is up. Keywords: climatology change, GEOMORPHOLOGICAL evidence, Meyghan playa, quaternary Introduction Playas from the past century have been of interest to geographers and geologists. The role of playas as a valuable evidence of climate change has been the main focus of this study. The aim of this study was to identify the geomorphologic evidence of quaternary climate change in Meyghan play. For this purpose, the necessary information layers were prepared, or from satellite images P6 IRS (with spatial resolution of 24 meters) were extracted and the geomorphology map of Meyghan basin was drawn based on them. Then the Meyghan playground was reconstructed in humid quaternary periods with the assistance of four glacial, climatic, human and laboratory indicators. The Meyghan sedimentary basin is 5528 square kilometers. Meyghan playa has 135 square kilometers area and is located at an average height of 1675 meters above sea level and at altitudes of Alborz and Zagros, 15 kilometers north and northeast of Arak city. Materials & Methods In order to do this study, four glacial, climatic, and human and laboratory indicators were used as evidence assessment of wetter periods in Meyghan play. Then each of the indicators was identified and analyzed separately in Meyghan playa. 1. Glacial Indices: For analysis of glacier indicators, digital elevation model, topographic map 1: 25000, satellite imagery IRS P6 and regional temperature map were collected. Then, by examining the shape of the curves of degree and conformance and their relationship with zero-degree line and satellite images, the circus placement was extracted from topographic map. 2. Climate indexes: Regression relationship was established for calculating climatic indices, average temperature PARAMETERS and annual precipitation of 8 climatic stations in a 25-year long period. From 1987 to 2012, the regression relationship was established and its equations applied on the digital elevation model of the area. 3. Human Indicators: A review of human indicators through observation of the field and exploration of the studied area, or strategies such as testing on the evidence available in the playa environment to prove human life in playas in the distant period, is a strategic one. 4. Laboratory Indices: For laboratory studies, data from 11 trenches we collected from the study area was used. In the first stage, field and survey operations were sampled in the study area. In each of the trench points, a trench was drilled to a depth of 75 cm with a small chisel and a shovel, which resulted in the removal of 11 samples of sediment from different locations with proper dispersion. Samples were taken in plastic and carefully labeled. Photos were then taken from the sedimentary environment of the samples. The laboratory PARAMETERS in this study included Granulometeric analyze, orthoscopic interpretation, and XRD and XRF tests. Discussion of Results & Conclusions According to the Granulometry results of samples, calculating the chromobin index showed that samples 5, 6 and 7 were of river sediments and other samples were low sediment deposits. Most of the specimens also tended to fine-grained particles. According to the analyzes, the present sediments of the present day are greater than the second and third Shale, containing chlorite and Elite minerals, as well as volcanic rocks (belonging to the Pliocene period) of the basin, and, of course, with moderate sedimentary maturity. The average temperature of the area during the quaternary period varied from a maximum of 2. 67 to a minimum of-6. 6 ° C. The results of morphoscopic analysis showed that in the transport of sediments to beech groves, in addition to the wind process, the blue process also played a significant role. Cumulative curves drawn on the basis of granulometric studies were also characterized by broken straight lines indicating that various mechanisms caused the sedimentation in the studied area. The analysis of the oxides of the main and secondary elements of the area showed; the origin of the deposits of the sediments of the area were of igneous rocks. From other points in the morphoscopy of sediments, it is found that kaolinite is found in the area of the plain, which goes underwater, and is much less visible on the margin of the playa, which proves the formation of kaolinite in the playground in Playa. Slowly Angularity of almost all quartz particles is evident in all samples, indicating the physical destruction of quartz during transportation to the desert and, of course, should not ignore the relative resistance of more quartz minerals.