1. Land Seismic-Enying Ridge Region Processing Plus Minus Method Minus time, T - =t AG -t BG Plus time, T + =t AG +t BG - t AB Depth, Refraction Reflection Interpretation No Correlation with Resistivity data. Layer 1 is likely to be unconsolidated soil. Topography caused by erosion, which did not affect the refracted layer. Conclusion The Aim of the Refraction survey was to compare the subsurface structure to the topography. The results suggested that the two are not correlated. The topography is likely to be an erosional structure, rather than a result of tectonic activity. The 500m reflection survey revealed, a SSW dipping basement horizon from 45 to 75m depth. Interpretation Gravity and Magnetic gradients correlate to the dip of the reflector. This indicates that the basement rock is shallower at the NNE end. Depth of bright reflector correlates well with the depth of the basement from the borehole. Some sediment onlap onto the basement. VLF Roisin McGee 1 Brioch Hemmings 1 Ali Al-Ibrahim 1 Deák Attila 2 Komoróczi Zoltán 2 Line 1&2 (R&R) Line 3&4 (R&R) Line 6 (Refraction) Line 7 (Reflection) Line 5 (Refraction) Introduction Processing - ProMax Results (Line 6) Change in Velocity at 20m depth Unlikely correlation with topography. Slight lateral variation in Velocity Method Bj38 Reflection line 7 Results (Line 7) Bright Reflector found at about 75m Dipping to the SSW No topographic correlation SSW Load data Geometry Edit Amplitude Recovery Mute Elevation statics Filter test & Velocity Hyperbola CDP sort Brute Stack Velocity Analysis Stack Bore hole data Gravity gradient Magnetic gradient The first aim was to learn the methods of seismic Reflection and Refraction surveying, processing and interpretation. Refraction was used at the fields near Enying, to image the geological structure and relate it to the topography. Reflection survey was implemented at an area North-East of Enying Ridge, to inspect the structure of the basement. NNE 1.Leeds University, 2.Eötvös University A B 1 2 3 1 2 3

2. The Aim of the Refraction survey was to compare the subsurface structure to the topography, and it was proven that the two are not correlated. The Basement was imaged, using a reflection survey, and the shallow geological structure was revealed. Basement is at ….depth

3. V1 V2 Depth Shot point Geophone Depth V1 V2 A BG SP1SP2 24 geophones 1 2

5. Load data Geometry Edit Amplitude Recovery Mute Elevation statics Filter test & Velocity Hyperbola CDP sort Brute Stack Velocity Analysis Stack

6. Load data Geometry Edit Amplitude Recovery Mute Elevation statics Filter test & Velocity Hyperbola CDP sort Brute Stack Velocity Analysis Stack