QUANTITATIVE GEOMORPHOLOGICAL RESEARCHES
Year:2016 | Volume:4 | Issue:4 |Papers Count:12

Introduction In recent decades many parts of the world is witnessing growth and industrial development have been young and Lucrative, The industry flourished not only substantial but also under the various division has been. Tourism industry today in some countries to one of newspapers’ headlines, the most widespread and the most pure industries has turned. One of the important parts the industry enjoying nature and capacity of the natural environment to the capacity on the earth and form and processes related to this sector will be, with the titles that Geotourism and geotourism and the existence and many part of human life on the economy, income and entertainment under the influence have. With regard to technology growth and vastness information world and communications can be received a systematic development of a region depended on identify different potentials of this region that In line with planning could be codified and principles along with proper management and stable region for presented…

Introduction Evaporite formations, many of which include thick gypsum units, are covered 8% of the Earth's surface and underlie about 25% of the continental surface of the Earth. Gypsum (CaSO4.2H2O) is readily soluble in water. Therefore, karstic landscapes on gypsum terrains develop and are degraded much faster than they do on limestone or carbonate rocks. Because of its high solubility and dissolution rate, gypsum karst can evolve on a human time scale rather than a geological time scale. In spite of its widespread occurrence and its relevant importance from the applied perspective (hazards, impacts, and resources), gypsum karst has received scarce attention and remains comparatively understudied. From the 1990s, gypsum karst study began in earnest worldwide and in Iran, these studies is very young and rarely documentation can be found has studied gypsum Karst especially…

The most important subject in quantitative geomorphology is increasing of spatial resolution to increase the information in the digital elevation model (DEM). Different models have been used to improve the spatial resolution. Among the different models, sub-pixel/pixel spatial attraction model as the newest model is very high accuracy. In the study area was used the sub-pixel/pixel spatial attraction model for the first time to improve the spatial resolution DEM in the southern city of Darab (Qalatuyeh). The sub- pixel attraction models convert the pixel towards sub- pixels based on the fraction values in neighboring pixels that can be attracted only by central pixel. Based on this approach only a maximum of eight neighboring pixels can be selected for the attraction. In the model other pixels are supposed to be far from the central pixel to have any attraction. In this study by using sub- pixel attraction model the spatial resolution of digital elevation models (DEM) was increased. The design of the algorithm is accomplished by using digital elevation model (DEM) with spatial resolution of 30 m (Advanced Space borne Thermal Emission and Reflection Radiometer (ASTER)) and 90 m (Shuttle Radar Topography Mission (SRTM)) in the north of Darab, Fars province, Iran…

Introduction: Iran is a diverse land that diversity and differences in land and cultural more than 71 denominations, religion, people and language, and dozens of landscape different spatial and geomorphic is marked by such characteristics. This feature, according to classical geographers and sociologists have identified the cause of national weakness and always as a potential political challenges that have been mentioned however geographical new perspectives as the most important foundation territory of the same features of our national unity is guaranteed throughout history, they learned. The option to influence the events replicated when another dimension of space, Transtextuality space shape and location creates land identity. So as to cause questions of the organization of the geographic space between places and people in the know and the independence of the apparent distinction between deep link in the spatial organization that created and Iran as a whole unit is defined (Babajamali, 2014, 17). Iran geographical system is a land of diverse landscapes linked together and creates a single space and identity and location of cities, villages and civil systems or other mental canvas of our land as defined and the results of crystallization of mirror the identity land…

Introduction: In order to study the development of mountainous areas, researchers try to determine the snow-lines in glacial and inter-glacial periods. Bidkhan mountain is located in the southeastern part of the central Iranian volcanic belt (i.e. Sahand-Bazman zone) in 29° 35 to 29° 40 northen latitude and 56° 25 to 56° 30 eastern longitude. Glacial and periglacial processes were effective in changing Bidkhan mountain morphology. Here we seek the relationship between these morphological features and current morphclimatic regions and climate change. This study attempts to identify geomorphological evidence in the face of climate change and the relationship between these shapes in Bidkhan Mountain and current morphodynamic areas also climate change in the region. The preglacial forms say that most of the hereditary forms in areas outside the range of Quaternary glaciers, are the result of the cold climate. In this paper, information is associated with inherited forms of Bidkhan mountain can be used as indicators to demonstrate the preglacial conditions…

Introduction: During the long yearsand scale geo-life of internal morphogenesis processes, large areas of the planet have extensive changes. Iran's Land of as part of the Alps-Himalayas is that tectonically active zone of tectonic and seismic tectonic have special features (Zargarzadeh et al., 1388: 1). Therefore, evaluation of tectonic activity and its effects on regional development and land use planning and environmental management is very important. Because of these experiments will not be responsible for evaluating these activities, It seems necessary to quantify the behavior of tectonic movements. Quantitative measurements and numerical gives the opportunity sgeomorphologist to have real and tangible to evaluate and compare different landforms. (Gourabi and Nohegar, 177: 1386, Gholami, 3: 1389). Field research, laboratory and numerical models show that the difference in the style of deformation and uplift of the bedrock, causing will be disturbance in Drainage network. (Ribolini, A., Spagnolo, 253: 2008). Rivers are the earliest forms of environmental that react immediately to changes or changes in stream bed along the stream bed…

Introduction: Tectonic geomorphology of the study Landform affected by tectonic activity formed and evolved deals. Landform in tectonically active regions, the result of a complex combination of vertical and horizontal movements of crustal blocks and erosion or deposition by surface processes are (Ioannis et al.2006, p.211). Geomorphic indicators and geomorphic evidence for the relative simplicity of calculation, speed up the application, extract the required data from topographic maps, aerial photographs, and satellite and desired results are of great importance in studies Neotectonics. Zagros is active on the activities Neotectonics Mirzayi study (1997), more than 50% of the recorded earthquake occurred in Iran in the Zagros region and this region seismically active zone of the building. According to the study of seismic activity in the Zagros Neotectonics and enabled it vital to understand the situation in this zone is Neotectonics in each region. The purpose of this study was to evaluate the activities of Neotectonics using geomorphic indicators are in Kabirkuh anticline…

Introduction: Landslides are natural geological processes that have revolutionized ground clearance, re-form. Landslide is one of the most remarkable phenomena in environmental issues, watershed and natural resources. Landslide importance can be discussed and analyzed from various perspectives. The most important reason for the importance of this phenomenon, caused by the occurrence of damage to life and property it is. Iran, with vast mountainous areas, which make up half of the breadth of the country, having risen from active tectonic morphology, fracture and fragmentation of many, there are other reasons including lithology sensitive and vulnerable countries in terms of landslides are is. Nowadays people change the land use and expansion of communication networks, sensitive to the Earth's surface landslides, especially in mountainous areas has intensified. In the twentieth century, Asia has the highest incident of landslides (220 reported cases) to be allocated. America continent has the largest number of casualties (more than 2, 500) and Europe has experienced the highest losses. Iran is some of the damage caused by landslides. If the damage caused by the 4900 landslide recorded (from 1372 to September 1386) in the country is estimated 126, 893 billion rials…

Introduction: All living organisms on the planet and the integration of world civilization is soil. Soil erosion not only caused poor soil and desolate farms and in this way, leaves irreparable damages, but also causes enormous harms by sedimentation in streams and rivers, dam reservoirs and ports and reduce their intake capacity. Prediction of soil erosion, is always one of the most common methods in the management of natural resources inside basin for controlling of soil productivity and estimate the amount of sediment and water quality outside the basin. Nearly 40 percent of the area in Iran is semi-arid region, In these areas, soil erosion is more than other areas because of inappropriate distribution of precipitation during the year and weakness vegetation, therefore, controlling soil erosion action is important in these areas, particularly in the agricultural lands…

Regarding the importance of water resources in arid and semi-arid regions, and also, sediment and soil erosion problems, it is necessary to explain proper management. Soil erosion and sediment yield are among the major limitations in the use of water and soil resources. For this reason, the objective of this study evaluate MPSIAC and WEPP models in predicting erosion and sediment and one of the sub basins gojan chalnamad watersheds. In this study, at first, all of the factors of the both models were collected and measured in each of the land units. Then, the files of each of the parameters of the model were made and calculated special sediment load. Sediment amount was estimated by the WEPP and MPSIAC models respectively 4.14 and 9.1 tons per hectare per year. With the amount of sediment (5.27 tons per hectare per year) and in comparison with the amount of sediment estimated by two models and data analysis, the results showed that WEPP model With 21 percent relative error in the estimation of sediment, with less error is estimated and estimate the amount of sediment has closer special observation sediment and the MPSIAC model to estimate sediment 72% relative error, the error estimate is over. The overall results showed that the WEPP model is better than the MPSIAC model to estimate sediment...

Introduction: In fact nowadays tourism has become a dynamic and pervasive industry in the form of a worldwide system, so that it can be said that it is one the most successful industries in the world. Thus nowadays new concepts have appeared in tourism field and it is divided into different parts with different motives and goals. Among these new concepts and fields, geotourism has been introduced as one of the most common kinds of tourism in countries of the world. For more specialized, Geomorphotourism, was initially defined as a tourism which includes geographical features of a site, it also includes environment, culture, aesthetics, heritage and inhabitants. Thus Geomorphosites are significant capabilities in the formation of stable tourism, But Planning and systematical management are very important in this process...

Introduction: Iran with mostly mountainous topography, tectonics activities and earthquakes, diverse geological and climatic conditions have natural and suitable conditions for a wide range of landslides. In Iran, landslides Imposes 500 billion into the financial damage annually. In a general definition landslides are movement of rock, debris or soil under the influence of gravity. Landslide susceptibility maps, are an important tool for regional planning. The purpose of Landslide susceptibility maps is separation surface homogeneous areas, according to the likelihood of instability due to mass movements in specific situations. Landslide zonation map process is based on the understanding of natural features and quantitative modeling based on data for the study area. These estimates could be considered as the basis for next steps and plan for the future development of the regional and local scale. Various effective factors on landslide are, altitude and aspect and slope, heavy rainfall and water penetration through cracks and gaps, large fault activity, drainage network, land use changes, variety and texture of rock and soil type that is effective in strength and permeability, region geology and human activities…