Combined analysis of 2-D electrical resistivity, seismic refraction and geotechnical investigations for Bukit Bunuh complex crater

2nd International Conference on Geological, Geographical, Aerospace and Earth Sciences 2014

Azwin, I.N.^1 ; Saad, Rosli^1 ; Saidin, Mokhtar^2 ; Nordiana, M.M.^1 ; Bery, Andy Anderson^1 ; Hidayah, I.N.E.^1

Geophysics Section, School of Physics, Universiti Sains Malaysia, Penang

11800, Malaysia^1

Centre for Global Archaeological Research Malaysia, Universiti Sains Malaysia, Penang

11800, Malaysia^2

关键词: 2-D resistivities;    Bulk resistivity;    Combined analysis;    Crater morphology;    Geotechnical investigations;    Seismic refraction;    Seismic sections;    Seismic velocities;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/23/1/012013/pdf
DOI  :  10.1088/1755-1315/23/1/012013

来源: IOP

【 摘 要 】

Interest in studying impact crater on earth has increased tremendously due to its importance in geologic events, earth inhabitant history as well as economic value. The existences of few shock metamorphism and crater morphology evidences are discovered in Bukit Bunuh, Malaysia thus detailed studies are performed using geophysical and geotechnical methods to verify the type of the crater and characteristics accordingly. This paper presents the combined analysis of 2-D electrical resistivity, seismic refraction, geotechnical SPT N value, moisture content and RQD within the study area. Three stages of data acquisition are made starting with regional study followed by detailed study on West side and East side. Bulk resistivity and p-wave seismic velocity were digitized from 2-D resistivity and seismic sections at specific distance and depth for corresponding boreholes and samples taken. Generally, Bukit Bunuh shows the complex crater characteristics. Standard table of bulk resistivity and p-wave seismic velocity against SPT N value, moisture content and RQD are produce according to geological classifications of impact crater; inside crater, rim/slumped terrace and outside crater.