عنوان مقاله [English]
Great progress and development in geographic information systems technology has provided users the ability to use this discipline to evaluate changes resulting from natural and human factors, and to determine these changes. In this research, the changes trend in rainfall in the region of Marivan Plain and groundwater level changes were studied using GIS. The geographical coordinates of 23 rain gauges in the GIS were used to produce maps of their distribution using Thiessen polygon method. The study area was delineated from the interpolated map. Monthly precipitation data for a period of 15 years (1997-2011) were obtained from stations in the study area, and the mean precipitation for the area was calculated using the Thiessen polygon method. First, a point map was created using 23 rain gauge station coordinates of the plain, which was then interpolated using the nearest point method. The slope of the regression line reveals increase in rainfall amount during the year of study. Fluctuation of ground water table was studied for the years 1997-2011. Using coordinates of 27 wells dug in the study area, a point map was created. Average yearly groundwater table data related to observational wells in 1997 and 2011 were used to interpolate the point map using the moving average method. The results revealed 2509316 m3 declines in volume of the water.
Azizi Gh. (2003). Association between recent draughts and groundwater resources in Ghazvin Plain.
Geog. Res. Quart., 35(46), 131-144[In Persian].
Abbassnezhad A. and Shahidasht A. R. (2013). Vulnerability scanning of sirjan plain due to the
uncontrolled exploitation of the region aquifers. Urb. Studies Res., 5(2), 85-96 [In Persian].
Baizaei A. (2004). Assessing the impacts of the recent draughts on the groundwater resources of the
Naishabour Plain. M.Sc. Dissertation, Department of Natural Geography, Faculty of Geography,
University of Tehran [In Persian].
Lee J. Y., Yi M. J., Moon S. H., Cho M., Won J. H., Ahn K. H. and Lee J. M. (2007). Causes of the
changes in groundwater level at Daegu, Korea: the effect of subway excavations. Bull Eng. Geol.
Environ. 4(66), 251 -258.
Pisinaras V., Petalas C., Tsihrintzis V. A. and Zagana E. (2007). A groundwater flow model for water resources management in the Ismarida plain, North Greece” Environmental Modeling and Assessment Journal. 12(75), 75-89.
Razaghmanesh M., Salemi T. and Saraj T. (2008). Assessing quality and quantity of the Tabriz Plain
groundwater. National Conference on Irrigation and Drainage, Shahid Chamran University [In
Shakiba A. R., Mirbagheri B. and Khairi A. (2012). Drought and its impact on groundwater resources
in the East Kermanshah using SPI. Geog., 8(25), 104-124 [In Persian].
Zahmatkesh Gh. A., Alavipanah K. and Zehtabian G. R. (2001). Fluctuations in the shallow aquifers
at the outskirts of Playa (Case study: Semnan). J. Desert, 6(2), 15-30 [In Persian].
Zhang W., Yan Y., Zheng J., Li L. and Dong Xand Cai H. (2009). Temporal and spatial variability of
annual extreme water level in the Pearl River Delta region, China. Journal of the Global and
Planetary Change. 69(2), 35 -47.