Sherif M. Hanafy
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View article: Seismic characterization of inland and coastal sabkhas using VP, VS, seismic anisotropy, and attenuation
Seismic characterization of inland and coastal sabkhas using VP, VS, seismic anisotropy, and attenuation Open
View article: Accurate velocity estimation from surface-consistent residual statics
Accurate velocity estimation from surface-consistent residual statics Open
View article: Seismic Properties of Coastal and Inland Sabkhas: Implications for Static Corrections
Seismic Properties of Coastal and Inland Sabkhas: Implications for Static Corrections Open
Sabkha environments are a prevalent topographic feature in arid coastal areas. Along the Arabian Gulf, sabkhas overlie substantial hydrocarbon reservoirs and exhibit intricate lithological characteristics and an extremely shallow water tab…
View article: Signal-to-Noise Ratio Models for Shallow Borehole Seismic Monitoring
Signal-to-Noise Ratio Models for Shallow Borehole Seismic Monitoring Open
Seismic receivers are placed in shallow boreholes to increase recorded seismic waves’ signal-to-noise ratio, especially for detecting small seismicity or microseismicity. This study demonstrates that both the seismic signal and seismic noi…
View article: S‐Wave Velocity Model of Texas Based On Joint Inversion of Interferometry and P‐Wave Receiver Functions
S‐Wave Velocity Model of Texas Based On Joint Inversion of Interferometry and P‐Wave Receiver Functions Open
Velocity models are essential for accurately locating the rapidly increasing seismicity in Texas. The region's limited monitoring infrastructure and extensive sedimentary basins underscore the need for developing both P‐ and S‐wave models,…
View article: Enhancing the accuracy of seismic velocity in near-surface layers through Laplacian spectra analysis of weighted graphs
Enhancing the accuracy of seismic velocity in near-surface layers through Laplacian spectra analysis of weighted graphs Open
Shallow seismic surveys can play an important role in sustainable urban planning as well as monitoring of geological changes, contributing to climate resilience and the sustainable management of terrestrial ecosystems. A typical seismic la…
View article: Rocketquake Seismology with a Falcon 9 Rocket Source
Rocketquake Seismology with a Falcon 9 Rocket Source Open
We investigate the feasibility of using rocket launches, specifically rocketquakes, as a seismic source to image subsurface velocity and geology of planetary bodies. Toward this goal, we record the seismic vibrations excited by a Falcon 9 …
View article: Data Quality Aware Deep Learning for Reliable Seismic Event Detection
Data Quality Aware Deep Learning for Reliable Seismic Event Detection Open
View article: Meteorite impacts in quartz sand: An overview study of the resulting rock types
Meteorite impacts in quartz sand: An overview study of the resulting rock types Open
View article: Hybrid optimization for DC resistivity imaging via intelligible-in-time logic and the interior point method
Hybrid optimization for DC resistivity imaging via intelligible-in-time logic and the interior point method Open
View article: A collocated inversion of sources and early arrival waveforms for credible tomograms: Synthetic and field data examples
A collocated inversion of sources and early arrival waveforms for credible tomograms: Synthetic and field data examples Open
Waveform inversion is theoretically a powerful tool to reconstruct subsurface structures, but a usually encountered problem is that accurate sources are very rare, causing the computation to be unstable or divergent. This challenging pract…
View article: Decay of seismic noise at shallow boreholes: Observations from Groningen.
Decay of seismic noise at shallow boreholes: Observations from Groningen. Open
Long-term seismic monitoring arrays are often deployed to shallow boreholes to reduce the seismic noise. We investigate noise level decay in shallow boreholes. A large number of publicly available data with such deployment is available at …
View article: Iterative Interferometric Denoising Filter for Traveltime Picking
Iterative Interferometric Denoising Filter for Traveltime Picking Open
Traveltime picking accuracy is frequently affected by incoherent or random data noise. Within this context, we put forth a new denoising method called iterative interferometric denoising filtering. This method leverages the pseudo-Wigner d…
View article: First Break Traveltime Picking Using Unsupervised Machine Learning and Super‐Virtual Refraction Interferometry
First Break Traveltime Picking Using Unsupervised Machine Learning and Super‐Virtual Refraction Interferometry Open
An accurate and trustworthy first break picking plays a key role in static correction calculations, velocity analysis, and deconvolution. First break traveltimes picking accuracy ensures correct and reliable seismic data processing results…
View article: Approximation of seismic velocities from the spectrum of weighted graphs
Approximation of seismic velocities from the spectrum of weighted graphs Open
Extracting seismic velocities from recorded seismic data requires converting the shot gathers to mid-point gathers, calculating the velocity spectrum, and picking the velocity values. In this paper, we propose to use graph theory to extrac…
View article: Bioturbated Strata in the Aruma Formation, Central Saudi Arabia: An Analog for Aquifers and Hydrocarbon Reservoirs with Large Burrows
Bioturbated Strata in the Aruma Formation, Central Saudi Arabia: An Analog for Aquifers and Hydrocarbon Reservoirs with Large Burrows Open
View article: Waveform Parsimonious Refraction Interferometry
Waveform Parsimonious Refraction Interferometry Open
A physics-based approach called waveform parsimonious refraction interferometry (WPRI) which interpolates head or refraction waveform is introduced in this work.WPRI yields a significant advantage in exploration and engineering application…
View article: Removal of Intra-Array Statics in Seismic Arrays Due to Variable Topography and Positioning Errors
Removal of Intra-Array Statics in Seismic Arrays Due to Variable Topography and Positioning Errors Open
A receiver array is an arrangement of geophones used to enhance the signal-to-noise ratio (S/N) of seismic data. However, deviations from ideal array conditions can lead to the non-optimal performance of the array. This study investigates,…
View article: Application of Combined Local and Global Optimization Algorithms in Joint Interpretation of Direct Current Resistivity and Seismic Refraction Data: A Case Study of Dammam Dome, Eastern Saudi Arabia
Application of Combined Local and Global Optimization Algorithms in Joint Interpretation of Direct Current Resistivity and Seismic Refraction Data: A Case Study of Dammam Dome, Eastern Saudi Arabia Open
The main geological structures in the Dammam Dome are defined by integrating geophysical measurements and applying new methodological approaches. Dammam Dome is characterized by a well-developed fracture/joints system; thus, high complexit…
View article: A Comprehensive Study of Local, Global, and Combined Optimization Methods on Synthetic Seismic Refraction and Direct Current Resistivity Data
A Comprehensive Study of Local, Global, and Combined Optimization Methods on Synthetic Seismic Refraction and Direct Current Resistivity Data Open
Most geophysical inversions face the problem of non-uniqueness, which poses a challenge in the mapping and delineation of the subsurface anomalies. To tackle this challenge, a combined local and global optimization approach is considered f…
View article: Three-dimensional morphometric analysis and statistical distribution of the Early Kimmeridgian Hanifa Formation stromatoporoid/coral buildups, central Saudi Arabia
Three-dimensional morphometric analysis and statistical distribution of the Early Kimmeridgian Hanifa Formation stromatoporoid/coral buildups, central Saudi Arabia Open
The high porosity and permeability stromatoporoid/coral facies partly characterize some of the most productive supergiant Late Jurassic carbonate reservoirs in the Middle East. Reservoir models often overlook detailed morphology and distri…
View article: Land-Streamer vs. Conventional Seismic Data for High-Resolution Near-Surface Surveys
Land-Streamer vs. Conventional Seismic Data for High-Resolution Near-Surface Surveys Open
Near-surface high-resolution seismic mapping is very important in many applications such as engineering and environmental. However, the conventional setup of the seismic technique requires planting geophones, connecting cables, and then co…
View article: Three-Dimensional Morphometric Analysis and Statistical Distribution of the Early Kimmeridgian Hanifa Formation Stromatoporoid/Coral Buildups, Central Saudi Arabia
Three-Dimensional Morphometric Analysis and Statistical Distribution of the Early Kimmeridgian Hanifa Formation Stromatoporoid/Coral Buildups, Central Saudi Arabia Open
View article: GroningenNet: Deep Learning for Low-Magnitude Earthquake Detection on a Multi-Level Sensor Network
GroningenNet: Deep Learning for Low-Magnitude Earthquake Detection on a Multi-Level Sensor Network Open
Automatic detection of low-magnitude earthquakes has become an increasingly important research topic in recent years due to a sharp increase in induced seismicity around the globe. The detection of low-magnitude seismic events is essential…
View article: Comprehensive Geophysical Study at Wabar Crater, Rub Al‐Khali Desert, Saudi Arabia
Comprehensive Geophysical Study at Wabar Crater, Rub Al‐Khali Desert, Saudi Arabia Open
Interest in impact craters on the earth's surface has increased worldwide and is being investigated by using remote sensing, geological, boreholes, geophysical, and laboratory measurements. These measurements are used to build dynamic mode…
View article: Near-surface real-time seismic imaging using parsimonious interferometry
Near-surface real-time seismic imaging using parsimonious interferometry Open
Results are presented for real-time seismic imaging of subsurface fluid flow by parsimonious refraction and surface-wave interferometry. Each subsurface velocity image inverted from time-lapse seismic data only requires several minutes of …
View article: Deep learning for low-magnitude earthquake detection on a multi-level\n sensor network
Deep learning for low-magnitude earthquake detection on a multi-level\n sensor network Open
Automatic detection of low-magnitude earthquakes has become an increasingly\nimportant research topic in recent years due to a sharp increase in induced\nseismicity around the globe. The detection of low-magnitude seismic events is\nessent…
View article: Deep learning for low-magnitude earthquake detection on a multi-level sensor network
Deep learning for low-magnitude earthquake detection on a multi-level sensor network Open
Automatic detection of low-magnitude earthquakes has become an increasingly important research topic in recent years due to a sharp increase in induced seismicity around the globe. The detection of low-magnitude seismic events is essential…
View article: Deep Learning Driven Noise Reduction for Reduced Flux Computed Tomography
Deep Learning Driven Noise Reduction for Reduced Flux Computed Tomography Open
Deep neural networks have received considerable attention in clinical imaging, particularly with respect to the reduction of radiation risk. Lowering the radiation dose by reducing the photon flux inevitably results in the degradation of t…
View article: Integrated Geological, Hydrogeological, and Geophysical Investigations of a Barchan Sand Dune in the Eastern Region of Saudi Arabia
Integrated Geological, Hydrogeological, and Geophysical Investigations of a Barchan Sand Dune in the Eastern Region of Saudi Arabia Open
In arid countries such as Saudi Arabia, aeolian sand often covers a large area of the country. Understanding the variations of sand properties in dunes, including grain size, sorting, mineral composition and water content, can be important…