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Directions, Azimuths, Horizon
This chapter presents orientation in space: directions, azimuths, and horizon. Astronomic positioning introduces the classical navigation methods,...
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Co-seismic ionospheric disturbances characteristics in different azimuths following the 2022 Mexico earthquake from GNSS observations
Co-seismic ionospheric disturbances (CIDs) can help understand the coupled dynamics of earthquake-atmospheric coupling geophysical processes. On...
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Rock Physics Modeling and Seismic AVAZ Responses of Fractured Reservoirs with Different Azimuths
Fracture orientation and in particular the fracture strike play an important role in guiding the accurate estimation of the orientation of in situ...
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Study of Two-Dimensional Polarization Maps of the Skin for Differentiation of Lifetime and Post-mortal Nature and Temporal Dynamics of Abrasions
The results of an experimental study of the coordinate distributions of azimuths and ellipticity of polarization and temporal dynamics of the change...
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Orienting paleomagnetic drill cores using a portable GPS compass
AbstractA portable Global Positioning System (GPS) compass was devised for orienting paleomagnetic drill cores and field test measurements were...
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Azimuthal differences and changes in strain rate and stress of the Japanese Islands deduced from geophysical data
Geodetic and seismological observations have shown discrepancies between azimuths of maximum contraction (strain rate) and maximum compression...
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Multi-step Fracturing Radial Boreholes for Efficient Development of Unconventional Gas Reservoirs
Radial borehole fracturing is a production method that combines ultrashort radius radial boreholes with hydraulic fracturing, which is expected to...
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Compatibility of the SES Generation Model with the Precursory Phenomena Before the Tohoku M9 Earthquake in Japan in 2011
Applying naturalNatural time analysis of seismicity time analysis to the JapanJapanese seismicity from 1 January 1984 until the M9Earthquake, EQ...
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Using the hearing in noise test (HINT) in the assessment of the performance of directional microphone
ObjectivesHearing in noise test (HINT) is used to evaluate and compare the performance of different hearing aid. This research was designed to...
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Arc Tectonic Elements and Upper Mantle Structure of Central and Southeast Asia: Seismic Tomography and Seismicity Data
AbstractAnalysis of the upper mantle plumes spatial distribution in the inner part of the Sunda arc shows a number of plume bodies interrupting the...
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Wave Disturbances of Atmospheric Pressure and Wind Speed in the Troposphere Associated with the Solar Terminator
AbstractThe main characteristics (coherences, phase velocities, propagation directions, characteristic periods, and amplitudes) of wave disturbances...
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UBVRI night sky brightness at Kottamia Astronomical Observatory
Photoelectric observations of night sky brightness (NSB) at different zenith distances and azimuths, covering all the sky, at the Egyptian Kottamia...
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Seismic anisotropy to investigate lithospheric-scale tectonic structures and mantle dynamics in southern Italy
Subduction zones may be characterised by deep-seated tectonic structures whose effects propagate to the upper plate through faulting and magmatism....
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Moho Map** of Northern Chile Region Using Receiver Function Analysis and HK Stacking
In this study, Rfpy software is utilized to compute the receiver functions to map Moho in the Northern Chile region. To obtain the teleseismic...
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Multi‑constellation GNSS interferometric reflectometry for the correction of long-term snow height retrieval on slo** topography
Snow is a key parameter for global climate and hydrological systems. Global Navigation Satellite System interferometric reflectometry (GNSS-IR) has...
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Seismic Fracture Characterization by QVOA Analysis Using Simulated Seismic Data by Physical Modeling
Vertical fractures cause azimuthal anisotropy in the wave-energy attenuation. To predict the fractures’ azimuth from seismic data, we develop a...
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A Decoupled Fracture- and Stress-Induced PP-wave Reflection Coefficient Approximation for Azimuthal Seismic Inversion in Stressed Horizontal Transversely Isotropic Media
Stress-induced seismic anisotropy is usually difficult to be separated or decoupled from intrinsic or fracture-induced anisotropy in the subsurface....
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Acoustic-Gravity Lamb Waves from the Eruption of the Hunga-Tonga-Hunga-Hapai Volcano, Its Energy Release and Impact on Aerosol Concentrations and Tsunami
The characteristics of acoustic-gravity waves (waveforms, time durations, amplitudes, azimuths and horizontal phase speeds) from the eruption of the...
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Spatial Variation of Aquifer Permeability in the North China Plain from Large Magnitude Earthquake Signals
Permeability changes induced by earthquakes have been studied widely. However, basic questions still remain: what are the spatial differences in...
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Method and Application of Stress Inversion based on Strike, Dip, and Rake Data from Microseismic Focal Mechanisms and Fracture Network
The hydraulic fracturing of horizontal wells is a key stimulation technology for unconventional tight oil/gas reservoirs. Good knowledge of the...