Geophysical investigations in Saudi Arabia, seismic refraction profile, status report No. 2, 15 January 1978

1978 ◽  
Author(s):  
Ralph J. Lamson ◽  
H. Richard Blank ◽  
J.H. Healy
Keyword(s):  
Saudi Arabia ◽  
Seismic Refraction ◽  
Status Report ◽  
Geophysical Investigations

scholarly journals Geophysical investigations for stability and safety mitigation of regional crude-oil pipeline near abandoned coal mines

2021 ◽  
Vol 18 (1) ◽  
pp. 145-162
Author(s):  
B Butchibabu ◽  
Prosanta Kumar Khan ◽  
P C Jha
Keyword(s):  
High Resolution ◽  
Crude Oil ◽  
Seismic Refraction ◽  
High Resolution Imaging ◽  
Weak Zone ◽  
Near Surface ◽  
Oil Pipeline ◽  
Refraction Tomography ◽  
Geophysical Investigations ◽  
Resolution Imaging

Abstract This study aims for the protection of a crude-oil pipeline, buried at a shallow depth, against a probable environmental hazard and pilferage. Both surface and borehole geophysical techniques such as electrical resistivity tomography (ERT), ground penetrating radar (GPR), surface seismic refraction tomography (SRT), cross-hole seismic tomography (CST) and cross-hole seismic profiling (CSP) were used to map the vulnerable zones. Data were acquired using ERT, GPR and SRT along the pipeline for a length of 750 m, and across the pipeline for a length of 4096 m (over 16 profiles of ERT and SRT with a separation of 50 m) for high-resolution imaging of the near-surface features. Borehole techniques, based on six CSP and three CST, were carried out at potentially vulnerable locations up to a depth of 30 m to complement the surface mapping with high-resolution imaging of deeper features. The ERT results revealed the presence of voids or cavities below the pipeline. A major weak zone was identified at the central part of the study area extending significantly deep into the subsurface. CSP and CST results also confirmed the presence of weak zones below the pipeline. The integrated geophysical investigations helped to detect the old workings and a deformation zone in the overburden. These features near the pipeline produced instability leading to deformation in the overburden, and led to subsidence in close vicinity of the concerned area. The area for imminent subsidence, proposed based on the results of the present comprehensive geophysical investigations, was found critical for the pipeline.

Microearthquakes in the Tihamat-Asir region of Saudi Arabia

1980 ◽  
Vol 70 (6) ◽  
pp. 2291-2293
Author(s):  
H. M. Merghelani ◽  
S. K. Gallanthine
Keyword(s):  
Saudi Arabia ◽  
Continental Crust ◽  
Red Sea ◽  
Fault Plane ◽  
Seismic Refraction ◽  
Earthquake Hazard ◽  
Tectonic Activity ◽  
Fault Plane Solutions ◽  
High Level ◽  
Asir Region

abstract During the course of a seismic refraction investigation in Saudi Arabia, an unexpected high level of microearthquake activity was detected near the border of the Red Sea and near the transition from oceanic to continental crust. The data is not adequate to determine fault plane solutions nor to relate the earthquakes to specific structures, but the existence of microearthquakes at this location suggest that there is a significant level of tectonic activity at a point 200 km from an axial trough of the Red Sea. These data, combined with other recent geological observations, may be an important clue to the understanding of continental rifting. The data suggest the need for a more thorough investigation of the earthquake hazard along the shores of the Red Sea.

scholarly journals Karst Detection, Prevention and Correction: A Case Study along the Riyadh Metro Line 3 (Saudi Arabia)

Proceedings ◽  
2018 ◽  
Vol 2 (23) ◽  
pp. 1429 ◽  
Author(s):  
Manuel Cueto ◽  
Pablo de la Puente ◽  
Carlos López-Fernández ◽  
Luis Pando ◽  
Daniel Arias
Keyword(s):  
Electrical Resistivity ◽  
Saudi Arabia ◽  
Preventive Measures ◽  
Seismic Refraction ◽  
Comprehensive Investigation ◽  
Urban Transit ◽  
Transit System ◽  
Cavity Filling ◽  
Metro Project

In the framework of the largest urban-transit system ever built from scratch, the Riyadh Metro Project (6 lines totaling 176 km), a comprehensive investigation was carried out for karst detection, prevention and correction. This case study of the Metro Line 3 (41.6 km) seeks to show how the multi-technique geophysical survey (seismic refraction, electrical resistivity and ground penetration radar down to 40–50 m depth) was found to be a successful tool in detecting karst features. Preventive measures included systematic probing drilling to anticipate karst cavities below foundations (653 piers) and tunnel lining evaluation using 2D finite elements. Finally, this paper provides initial guidance of the corrective techniques used for each engineering challenge, such as cavity filling with grouting, geogrid reinforcement, etc.

Geophysical investigations of the potential sinkholes in Al Hassa, eastern Saudi Arabia

2020 ◽  
Author(s):  
Abiola Ojo ◽  
H. R. Ahmed ◽  
S. I. Kaka ◽  
Muhammad Asad Shafiq ◽  
Muhammad Fayyaz ◽  
...  
Keyword(s):  
Saudi Arabia ◽  
Geophysical Investigations

Evaluation of geotechnical parameters for urban site in southern Khamis Mushait city, southwest Saudi Arabia, using seismic refraction method

2014 ◽  
Vol 8 (8) ◽  
pp. 6225-6236
Author(s):  
Sattam Almadani ◽  
Abdullah Al-Amri ◽  
Mohamed Fnais ◽  
Kamal Abdelrahman ◽  
Elkhedr Ibrahim ◽  
...  
Keyword(s):  
Saudi Arabia ◽  
Seismic Refraction ◽  
Urban Site ◽  
Geotechnical Parameters ◽  
Refraction Method ◽  
Seismic Refraction Method
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