Subsurface Soil Evaluation Using Seismic Refraction Tomography and Standard Penetration Test at Bukit Bunuh Impact Crater Area
Journal Title: Natural and Engineering Sciences - Year 2019, Vol 4, Issue 1
Abstract
Subsurface soil varies from place to place due to the rock type, its mineral constituents, the climate of the area, time and other geological activities such as meteorite impact. The process that leads to the formation of impact crater can cause great variation in the subsurface soil characteristics, which may have an effect on civil engineering structures. Hence, the need to evaluate the subsurface soil of the impacted area. In this study, Seismic refraction and borehole data were used to achieve the aim. The result revealed that the overburden layer inside the crater is dominated by low-velocity values (< 750 m/s) which correspond with low N-values. Moderate seismic velocity values (750 – 1400 m/s) with moderate to high N-values were predominant for overburden soil within the crater rim and outside the crater. Slightly, moderately and highly weathered granite was observed at all survey lines with velocity values ranging from 1200 - 3450 m/s. The low N-values with low-velocity values obtained inside the crater are indications that the subsurface soil inside the impact crater area has been deformed and weakened as evident by the presence of brecciation which occurred during the impact process.
Authors and Affiliations
Mustapha Adejo Mohammed, Rosli Saad, Nur Azwin Ismail, Sabiu Bala Muhammad, Amsir Taib, Mokhtar Saidin
Keywords
Related Articles
- EP ID EP471659
- DOI 10.28978/nesciences.522158
- Views 112
- Downloads 0
Bioaccumulation of nine heavy metals in some tissues of Anodontostoma chacunda (Hamilton, 1822) in the Arabian Sea coasts of Pakistan
Concentrations of heavy metals Cd, Fe, Pb, Cu, Zn, Ni, Co, Cr and Mn in muscles, liver, kidney and gills of marine and native commercial fish of Chacunda gizzard shad Anodontostoma chacunda collected from Karachi fish ha...
Emotion Analysis using Different Stimuli with EEG Signals in Emotional Space
Automatic detection for human-machine interfaces of the emotional states of the people is one of the difficult tasks. EEG signals that are very difficult to control by the person are also used in emotion recognition task...
Online LDA based brain-computer interface system to aid disabled people
This paper aims to develop brain-computer interface system based on electroencephalography that can aid disabled people in daily life. The system relies on one of the most effective event-related potential wave, P300, wh...
Catch Composition of Bottom Trawl Fisheries in Düzce Coast, southwestern Black Sea
This study was performed to identify the catch composition of Düzce coast (southwestern Black Sea) at depths of 30-110 meters by bottom trawl between September 2014 and August 2015. In the catch compositions of the Düzce...
First Record of the Pempheris rhomboidea (Kossmann & Räuber, 1877) from Northeastern Mediterranean Sea (Mersin Bay)
In this study, eight individuals of Pempheris rhomboidea (Kossmann & Räuber, 1877) were for the first time caught in the Mersin Bay, Northeastern Mediterranean Sea. Some morphometric and meristic characters of these indi...