ورقة بحثية عن التحليل المكاني للمياه الجوفية
موتمر اوسترافا 2009
25. - 28. 1. 2009, Ostrava
عنوان الورقة
Spatial analysis and interpolation of groundwater levels in the south Al Jabal Al Akhdar area using GIS
Salah, Hamad1
1Water resource department, General Water Authority,
32718, Benghazi, Libya
Shehabcad@Yahoo.com
Abstract : The
geostatistical analysis of the groundwater levels from 95 water wells in south
Al Jabal Al Akhdar area north east Libya was conducted according to GIS
methodology. Water level data firstly was explored for normality using
exploratory spatial data analysis (ESDA) tools, as the transformation was
required to drive the data into normality. Spatial interpolation also was
carried out using geostatistics ordinary kriging model through out
modeling semivariogram and covariance. Afterward the surface was generated
for water level map, which shows the groundwater is at a deeper level in the northern parts of the study area. However,
it gradually becomes shallow in the south. Mapping potentiometric surface
was conducted from digital elevation model (DEM) and groundwater level
raster, where it shows high values in the northern parts of the study area,
this high values decreases to the southern parts of the area. Furthermore,
four water divides were defined from the potentiometric surface .
ليست هناك تعليقات:
إرسال تعليق