Application of Ground penetrating radar (GPR) to discover water table
عنوان دوره: نوزدهمین کنفرانس ژئوفیزیک ایران
کد مقاله : 1725-NIGS
نویسندگان
1موسسه ژئوفیزیک دانشگاه تهران
2دانشگاه صنعتی شاهرود
3مسئول آزمایشگاه ژئوفیزیک دانشکده مهندسی معدن، نفت و ژئوفیزیک دانشگاه شاهرود
چکیده
Ground penetrating radar (GPR) is one of the non-destructive and quick geophysical methods that can give high resolution and continuous sections of the subsurface by transmitting, reflecting, and recording of EM waves with high frequency. In this study, the performance of the method is investigated for displaying the water table and the transition zone. A GPR survey, composed of a few profiles with the distance more than 700 m (longer than 700 m through a few profiles) with 50 MHz unshielded antenna made by Swedish company "MALA Geoscience" was done in the North East of Nikshahr on the bed of a local dried river to determine its water table. In this paper, at first, the important parameters of the water table, the general principles of GPR for displaying of the water table and its structures were examined. Then, the necessary processing for the environmental noises of the region is described. After applying these processing, the GPR sections show strong, continuous, and sharp reflections from the water table and the transition zone. The processing used in this study was included initial processing in GPR and suitable filters for the removal of coherent and non-coherent noises.
کلیدواژه ها
Title
Application of Ground penetrating radar (GPR) to discover water table
Authors
Saeed Parnow, Hamid Bizhani, Mahdy Zarei
Abstract
Ground penetrating radar (GPR) is one of the non-destructive and quick geophysical methods that can give high resolution and continuous sections of the subsurface by transmitting, reflecting, and recording of EM waves with high frequency. In this study, the performance of the method is investigated for displaying the water table and the transition zone. A GPR survey, composed of a few profiles with the distance more than 700 m (longer than 700 m through a few profiles) with 50 MHz unshielded antenna made by Swedish company "MALA Geoscience" was done in the North East of Nikshahr on the bed of a local dried river to determine its water table. In this paper, at first, the important parameters of the water table, the general principles of GPR for displaying of the water table and its structures were examined. Then, the necessary processing for the environmental noises of the region is described. After applying these processing, the GPR sections show strong, continuous, and sharp reflections from the water table and the transition zone. The processing used in this study was included initial processing in GPR and suitable filters for the removal of coherent and non-coherent noises.
Keywords
Application of Ground penetrating radar (GPR) to discover water table