Volume 38 (2024)
Volume 37 (2023)
Volume 36 (2022)
Volume 35 (2021)
Volume 34 (2020)
Volume 33 (2019)
Volume 32 (2018)
Volume 31 (2017)
Volume 30 (2016)
Volume 29 (2015)
Volume 28 (2014)
Volume 27 (2013)
Volume 26 (2012)
Volume 25 (2011)
Volume 24 (2010)
Volume 23 (2009)
Volume 22 (2008)
Evaluation the Trend and Trend Chang Point of Urmia Lake Basin Precipitation

Mohammad Nazeri Tahrudi; Farshad Ahmadi; Keivan Khalili

Volume 31, Issue 2 , May and June 2017, , Pages 644-659

https://doi.org/10.22067/jsw.v31i2.55338

Abstract
  Introduction: Given the fact that Iran is located in the center of the dryland of earth and is significantly influenced by the deserts of Central Asia and hot dry deserts of Arabia and Africa, is one of the most arid and low rainfall land areas.So is the proper management of water resources is of critical ...  Read More

Investigation the Concentration and Trend of Winter Precipitation of Iranian Border Stations over the Last Half Century

Keyvan Khalili; Mohammad Nazeri Tahrudi; Rasoul Mirabbasi Najaf Abadi; Farshad Ahmadi

Volume 30, Issue 4 , September and October 2016, , Pages 1309-1321

https://doi.org/10.22067/jsw.v30i4.45639

Abstract
  Introduction: Climate change in the current era is a very important environmental challenge. Our understanding of the impacts of human activities on the environment, especially those related to global warming caused by increased greenhouse gases indicates that, most probably, a number of hydro-climatic ...  Read More

Hydrological River Drought Analysis (Case Study: Lake Urmia Basin Rivers)

Mohammad Nazeri Tahrudi; Keivan Khalili; Javad Behmanesh; Kamran Zeinalzadeh

Volume 30, Issue 4 , September and October 2016, , Pages 1025-1042

https://doi.org/10.22067/jsw.v30i4.45672

Abstract
  Introduction: Drought from the hydrological viewpoint is a continuation of the meteorological drought that cause of the lack of surface water such as rivers, lakes, reservoirs and groundwater resources. This analysis, which is generally on the surface streams, reservoirs, lakes and groundwater, takes ...  Read More

Spatial and Regional Analysis of Precipitation Trend over Iran in the Last Half of Century

Mohammad Nazeri Tahrudi; Keivan Khalili; Farshad Ahmadi

Volume 30, Issue 2 , May and June 2016, , Pages 643-654

https://doi.org/10.22067/jsw.v30i2.39130

Abstract
  Introduction: Climate change has been one the most important subject in studies in the recent decades. Precipitation is an effective climatic parameter in the municipal and rural studies and in the industry, architecture, agriculture, climate and other fields. Trend analysis of average monthly and yearly ...  Read More

Identification of Trend in Spatial and Temporal Dry and Wet Periods in Northwest of Iran Based on SPI and RAI Indices

Majid Montaseri; Babak Amirataee; Keyvan Khalili

Volume 30, Issue 2 , May and June 2016, , Pages 655-671

https://doi.org/10.22067/jsw.v30i2.39679

Abstract
  Introduction: Droughts are natural extreme phenomena, which frequently occur around the world. This phenomenon can occur in any region, but its effects will be more severe in arid and semi-arid regions. Several studies have highlighted the increasing of droughts trend around the world. The majority of ...  Read More

Application of ANFIS and SVM Systems in Order to Estimate Monthly Reference Crop Evapotranspiration in the Northwest of Iran

F. Ahmadi; S. Ayashm; K. Khalili; J. Behmanesh

Volume 30, Issue 1 , March and April 2016, , Pages 260-274

https://doi.org/10.22067/jsw.v30i1.38287

Abstract
  Introduction Crop evapotranspiration modeling process mainly performs with empirical methods, aerodynamic and energy balance. In these methods, the evapotranspiration is calculated based on the average values of meteorological parameters at different time steps. The linear models didn’t have a good ...  Read More

Investigation of Relationship Between Hydrologic Processes of Precipitation, Evaporation and Stream Flow Using Linear Time Series Models (Case study: Western Basins of Lake Urmia)

M. Moravej; K. Khalili; J. Behmanesh

Volume 29, Issue 1 , March and April 2015, , Pages 85-101

https://doi.org/10.22067/jsw.v0i0.33519

Abstract
  Introduction: Studying the hydrological cycle, especially in large scales such as water catchments, is difficult and complicated despite the fact that the numbers of hydrological components are limited. This complexity rises from complex interactions between hydrological components and environment. Recognition, ...  Read More

Compared to The Normal Mechanism Becomes The Normal Monthly Rainfall Data from Different Regions of Iran

Mohammad Nazeri Tahrudi

Volume 28, Issue 2 , May and June 2014, , Pages 365-372

https://doi.org/10.22067/jsw.v0i0.24354

Abstract
  The application of statistical theory and probability analysis of hydrologic time series is assumed that the variables are normally distributed. Since many time series are not normal, it is required prior to any analysis and modeling, they looked normal. This conversion is done by Const. In this study, ...  Read More

Forecasting River flow By Bilinear Nonlinear Time Series Model (Case Study : Barandoz-Chay & Shahar-Chai Rivers)

H. Naveh; K. Khalili; M. T. Alami; J. Behmanesh

Volume 26, Issue 5 , November and December 2012, , Pages 1299-1307

https://doi.org/10.22067/jsw.v1391i0.17074

Abstract
  One of the important tools in modeling and forecasting of hydrological processes, is using and analysis of time series. The generated river flow series by using time series models have been used in many researches such as drought, flood periods, reservoir systems design and other purposes. The use of ...  Read More