Original Article
Integration of high spatial resolution SAR and multispectral images for building detection in urban areas

Maryam Teimouri; Mehdi Mokhtarzade; Mohammad Javad Valadan Zoej

Volume 13, Issue 1 , May 2021, Pages 1-16

https://doi.org/10.52547/gisj.13.1.1

Abstract
  In this study, the SAR data is used as a supplementary data to overcome the limitations of the multispectral (MS) image in building detection. Therefore, the proposed method utilizes a multisensor data fusion to take the advantages of both MS and SAR data together. In addition, two different filter-based ...  Read More

Original Article
Urban Tree Canopy Mapping Using Object Oriented Classification and Machine Learning Algorithms

Nahid Haghshenas; Ali shamsoddini; Hossein Aghighi

Volume 13, Issue 1 , May 2021, Pages 17-32

https://doi.org/10.52547/gisj.13.1.17

Abstract
  It is necessary to know about the quantity of urban tree canopy cover due to its role in air and noise pollution reduction, wind prevention, saving rain water, and runoff control. Being expensive and time consuming, the manual extraction of tree canopy has been replaced by remote sensing techniques conducted ...  Read More

علمی - پژوهشی
The Accuracy of Flow Direction Algorithms and ASTER, SRTM DEMs and Topographic Maps of 1:25000 for Extracting Fractal Dimension of Drainage Networks

Mojdeh Mohammadi Khashoui; Mohammad reza ekhtesasi; Ali Talebi; Seyed Zeynalabedin hosseini

Volume 13, Issue 1 , May 2021, Pages 33-54

https://doi.org/10.52547/gisj.13.1.33

Abstract
  Digital elevation models and its derivatives are important factors for watershed modeling. It is obvious that DEM errors adversely affect the accuracy and thereby modeling of natural processes. This problem along with the impossibility of measuring all elements of nature, has led to a major evolution ...  Read More

Original Article
Spatiotemporal Assessment of the Intensity, Duration, Frequency and Magnitude of the Drought by Using Remote Sensing Data

Maedeh Behifar; a.a Kakroodi; Majid Kiavarz; Farshad Amiraslani

Volume 13, Issue 1 , May 2021, Pages 55-74

https://doi.org/10.52547/gisj.13.1.55

Abstract
  Drought is one of the most important natural disasters in the country, with devastating environmental and economic effects. Most drought studies have focused on drought severity and other drought characteristics have not been usually investigated. In this research, for the first time, the capability ...  Read More

Original Article
Optimal Band Selection of Landsat-8 Images for Estimation of CDOM of Lakes Using Support Vector Regression

Mohammad Momeni Esfahani; Amir Shahrokh Amini

Volume 13, Issue 1 , May 2021, Pages 75-92

https://doi.org/10.52547/gisj.13.1.75

Abstract
  Colored dissolved organic matter (CDOM) is an important measure of water quality. CDOM can reduce the amount of light in water layers, disrupt the biological activity of photosynthesis, and inhibit the growth of phytoplankton populations that are essential for the aquatic food chain. Contrary to conducted ...  Read More

Original Article
Integration of ASTER Remote Sensing and Magnetometer Data to Identify Iron Sources (Case Study Northeast Neyriz-Fars Province)

Saeed Mojarad

Volume 13, Issue 1 , May 2021, Pages 93-116

https://doi.org/10.52547/gisj.13.1.93

Abstract
  The study area is located in the northeast of neyriz and near the village of Ghori in Fars province. Geologically, the units of the study area are located in the zone-Sanandaj-Sirjan and with the general northwest-southeastern trend. Most of these Units calcareous units, units sericitic - chlorite schist ...  Read More

Original Article
The Access to the City's Rail Transport Network Using the Gini Index and Curve Lorenz in Horizon 2031

َAliakbar Matkan; Aliraze Vafaeinezhad; Iman Baharloo; Ahmad Khademolhoseini

Volume 13, Issue 1 , May 2021, Pages 117-132

https://doi.org/10.52547/gisj.13.1.117

Abstract
  One of the most important modes of public transport is the metro transport network, which has a significant impact on reducing traffic and air pollution. On the other hand, due to the exorbitant costs of setting up the metro network, step-by-step development with the operation of one line and the implementation ...  Read More