scholarly journals Nonhydrostatic Pollard-like internal geophysical waves

2019 ◽  
Vol 39 (9) ◽  
pp. 5171-5183
Author(s):  
Mateusz Kluczek ◽  
Keyword(s):  
Geophysical Waves

scholarly journals Toward Creating a Subsurface Camera

Sensors ◽  
2019 ◽  
Vol 19 (2) ◽  
pp. 301 ◽  
Author(s):  
Wenzhan Song ◽  
Fangyu Li ◽  
Maria Valero ◽  
Liang Zhao
Keyword(s):  
Homeland Security ◽  
Seismic Imaging ◽  
Interdisciplinary Collaboration ◽  
Basic Mechanism ◽  
3D Image ◽  
Exploration And Production ◽  
Sensor Signals ◽  
Geophysical Waves ◽  
Geophysical Imaging ◽  
First Time

In this article, the framework and architecture of a Subsurface Camera (SAMERA) are envisioned and described for the first time. A SAMERA is a geophysical sensor network that senses and processes geophysical sensor signals and computes a 3D subsurface image in situ in real time. The basic mechanism is geophysical waves propagating/reflected/refracted through subsurface enter a network of geophysical sensors, where a 2D or 3D image is computed and recorded; control software may be connected to this network to allow view of the 2D/3D image and adjustment of settings such as resolution, filter, regularization, and other algorithm parameters. System prototypes based on seismic imaging have been designed. SAMERA technology is envisioned as a game changer to transform many subsurface survey and monitoring applications, including oil/gas exploration and production, subsurface infrastructures and homeland security, wastewater and CO2 sequestration, and earthquake and volcano hazard monitoring. System prototypes for seismic imaging have been built. Creating SAMERA requires interdisciplinary collaboration and the transformation of sensor networks, signal processing, distributed computing, and geophysical imaging.

scholarly journals Exact geophysical waves in stratified fluids

2013 ◽  
Vol 92 (11) ◽  
pp. 2254-2261 ◽  
Author(s):  
Anca-Voichita Matioc
Keyword(s):  
Stratified Fluids ◽  
Geophysical Waves

Some Nonlinear, Equatorially Trapped, Nonhydrostatic Internal Geophysical Waves

2014 ◽  
Vol 44 (2) ◽  
pp. 781-789 ◽  
Author(s):  
Adrian Constantin
Keyword(s):  
Exact Solution ◽  
Surface Layer ◽  
Large Amplitude ◽  
Equatorial Waves ◽  
Wind Effects ◽  
Governing Equations ◽  
Near Surface ◽  
Large Amplitude Oscillation ◽  
Geophysical Waves ◽  
Explicit Exact Solution

Abstract The author presents an explicit exact solution to the governing equations for geophysical equatorial waves in the β-plane setting. The solution describes equatorially trapped waves propagating eastward above the thermocline and beneath the near-surface layer where wind effects are confined. At great depths the water is still, while the transition toward the large-amplitude oscillation of the thermocline is accommodated by an eastward-flowing current. Above the thermocline a flow reversal occurs, with the underlying current flowing westward close to the layer where wind effects are confined.

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