Salt deformation modeling through the use of enhanced seismic imaging techniques

1994 ◽  
Vol 13 (8) ◽  
pp. 844-848 ◽  
Author(s):  
William M. House ◽  
John A. Pritchett
Keyword(s):  
Seismic Imaging ◽  
Imaging Techniques

Physical properties and seismic imaging of massive sulfides

Geophysics ◽  
2000 ◽  
Vol 65 (6) ◽  
pp. 1882-1889 ◽  
Author(s):  
Matthew H. Salisbury ◽  
Bernd Milkereit ◽  
Graham Ascough ◽  
Robin Adair ◽  
Larry Matthews ◽  
...  
Keyword(s):  
Physical Properties ◽  
Seismic Imaging ◽  
Country Rock ◽  
Imaging Techniques ◽  
Geometric Constraints ◽  
Eastern Canada ◽  
Massive Sulfides ◽  
Ore Bodies ◽  
Text Density ◽  
Representative Samples

Laboratory studies show that the acoustic impedances of massive sulfides can be predicted from the physical properties ([Formula: see text], density) and modal abundances of common sulfide minerals using simple mixing relations. Most sulfides have significantly higher impedances than silicate rocks, implying that seismic reflection techniques can be used directly for base metals exploration, provided the deposits meet the geometric constraints required for detection. To test this concept, a series of 1-, 2-, and 3-D seismic experiments were conducted to image known ore bodies in central and eastern Canada. In one recent test, conducted at the Halfmile Lake copper‐nickel deposit in the Bathurst camp, laboratory measurements on representative samples of ore and country rock demonstrated that the ores should make strong reflectors at the site, while velocity and density logging confirmed that these reflectors should persist at formation scales. These predictions have been confirmed by the detection of strong reflections from the deposit using vertical seismic profiling and 2-D multichannel seismic imaging techniques.

Comparison of Some Seismic Imaging Techniques

1980 ◽  
pp. 737-760
Author(s):  
Thomas T. Hu ◽  
Keith Wang ◽  
Fred Hilterman
Keyword(s):  
Seismic Imaging ◽  
Imaging Techniques

On the theory of unification of seismic imaging techniques

2001 ◽  
Author(s):  
Herman Jaramillo ◽  
Uwe Albertin
Keyword(s):  
Seismic Imaging ◽  
Imaging Techniques

Imaging sunspots using helioseismic methods

2005 ◽  
Vol 363 (1837) ◽  
pp. 2761-2775 ◽  
Author(s):  
C.H Tong
Keyword(s):  
Seismic Imaging ◽  
Structural Characteristics ◽  
Imaging Techniques ◽  
Solar Physics ◽  
Interdisciplinary Approach ◽  
Active Regions ◽  
Solar Interior ◽  
Seismic Methods ◽  
New Research ◽  
First Time

The origin of sunspots is one of the most fundamental and yet poorly understood areas in solar physics. Imaging local anomalous features in the solar interior offers a direct way to unravel the underlying physical processes of sunspots and the mechanisms behind their formation. The advent of local helioseismology in the last few years has, for the first time, made it possible to image local internal solar structures. High-resolution satellite and ground telescope data which reveal the details of the vibrations of the visible solar surface are essential in the development of local helioseismology. We are now in a position to transfer the seismic methods that have traditionally been used to study the Earth's interior to solar investigations. This interdisciplinary approach to developing seismic imaging techniques is opening up new ways of understanding the flow and other structural characteristics beneath sunspots. In this article, I review recent progress in the imaging of sunspots and the surrounding solar active regions. By highlighting the strengths of seismic methods and the challenges facing local helioseismology, I discuss some of the new research directions and possibilities that have arisen from this novel type of seismic imaging.

scholarly journals SIT4ME: seismic imaging of mineral-hosting structures in Sotiel-Coronada (Spain)

2020 ◽  
Author(s):  
Yesenia Martínez ◽  
Juan Alcalde ◽  
David Martí ◽  
Puy Ayarza ◽  
Mario Ruiz ◽  
...  
Keyword(s):  
Seismic Imaging ◽  
Raw Materials ◽  
Imaging Techniques ◽  
Mineral Exploration ◽  
P Wave ◽  
Target Area ◽  
Source Imaging ◽  
The North ◽  
Imaging Results ◽  
East West

<p>In order to tackle the ever-increasing demand of raw materials, the European Institute of Technology (EIT) promotes research and innovation solutions for safe and sustainable mineral exploration through its Raw Materials Programme. The SIT4ME project (“Seismic Imaging Techniques for Mineral Exploration”) has been funded as part of this program to develop efficient techniques in seismic acquisition and imaging methods for mineral exploration in crystalline environments. Within SIT4ME, a multidisciplinary data acquisition experiment (i.e. 3D-3C active and passive source seismic datasets) took place in November 2009 in Sotiel-Coronada (Iberian Pyrite Belt, SW Spain). The aim of this experiment was to image a 300-500 m depth pyrite-rich massive sulfide orebody interbedded with felsic volcanic rocks and shales. The seismic dataset involves the recording of 875 vibration points in 653 seismic receivers, distributed in a 3D mesh around the target and six 2D crooked lines. Conventional processing workflow (such as static corrections, surface-consistent deconvolution, amplitude equalization, frequency filtering, and velocity analysis) was combined with more advance methods (e.g. ground roll attenuation or post-stack coherency filtering) to obtain robust images of the subsurface of the target area. The processing workflow has been applied to four 2D seismic sections, one in the North-South and three in the East-West directions, distributed across the study area. The preliminary imaging results show coherent reflective packages down to two seconds two-way traveltime (TWT). The North-South line contains a north-dipping ~400 m long highly reflective zone in the center at 130 ms TWT. The east-west profiles show a slightly folded structure (antiform and synform) which is evident down to 0.25 s TWT. Towards the north, the seismic lines become parallel to subsurface structures and therefore the track of these structures is lost. Current work involves the incorporation of well-log data to improve the quality and resolution of the interpretations. The next processing steps will involve pre-stack depth migration, P-wave travel-time tomography and a combined analysis of controlled source imaging and ambient noise interferometry data.</p><p>The SIT4ME project has been funded by EIT Raw Materials (17024).</p>

scholarly journals LEAST-SQUARE REVERSE TIME MIGRATION (LSRTM) IN THE SHOT DOMAIN

2016 ◽  
Vol 34 (3) ◽  
Author(s):  
Antonio Edson Lima de Oliveira ◽  
Reynam Da Cruz Pestana ◽  
Adriano Wagner Gomes dos Santos
Keyword(s):  
Iterative Method ◽  
Seismic Data ◽  
Seismic Imaging ◽  
Imaging Techniques ◽  
Least Square ◽  
Subsurface Imaging ◽  
Reverse Time ◽  
Reverse Time Migration ◽  
Imaging Methods ◽  
Time Migration

ABSTRACT. One of the major limitations of imaging methods is, usually, the incomplete recorded seismic data that cause difficulties for the subsurface imaging techniques...Keywords: seismic imaging, resolution, modeling, iterative method, computational coast. RESUMO. Uma das limitações das técnicas de imageamento é que, via de regra, os dados sísmicos registrados são incompletos. Isso impossibilita uma correta reconstituição dos refletores em subsuperfície...Palavras-chave: imageamento sísmico, resolução, modelagem, método iterativo, custo computacional.

Seismic detection and characterization of a man-made karst analog — A feasibility study

Geophysics ◽  
2021 ◽  
Vol 86 (3) ◽  
pp. WB35-WB48
Author(s):  
Roland Gritto ◽  
Ali Elobaid Elnaiem ◽  
Fateh Alrahman Mohamed ◽  
Fadhil Sadooni
Keyword(s):  
Ambient Noise ◽  
Seismic Imaging ◽  
Imaging Techniques ◽  
A Priori ◽  
Low Frequency ◽  
Sharp Decrease ◽  
Seismic Velocities ◽  
Water Drainage ◽  
Imaging Results ◽  
Noise Data

At the site of a water drainage shaft on the campus of Qatar University that serves as a man-made karst analog, two seismic imaging techniques were adapted to use resonant scattered waves recorded during active-source seismic surveys and during passive ambient-noise surveys. Data acquisition included two seismic transmission surveys that encompassed the shaft and a passive ambient-noise survey that extended across the top of the shaft. Seismic imaging of band-pass-filtered resonance waves correctly estimated the location and dimension of the shaft. Furthermore, the method detected the presence and the location of a horizontal drainage pipe and gravel bed connecting neighboring water shafts. Ambient-noise data were analyzed by computing amplitude values of the seismic records in spectral passbands. The results indicated an amplification of seismic amplitudes above the shaft for low-frequency passbands and a sharp decrease in amplitude values for high-frequency passbands. The high- and low-amplitude values displayed as a function of the receiver position allowed for accurate detection and location of the shaft in space. Ground truthing of the imaging results confirmed the accuracy of the seismic techniques, whereas numerical modeling supported the interpretation of the ambient-noise data. The techniques used do not require knowledge of the seismic velocities in the subsurface, but they depend on a priori information about the approximate location of the target.

scholarly journals Advanced seismic imaging techniques characterize the Alpine Fault at Whataroa (New Zealand)

2016 ◽  
Vol 121 (12) ◽  
pp. 8792-8812 ◽  
Author(s):  
V. Lay ◽  
S. Buske ◽  
A. Lukács ◽  
A. R. Gorman ◽  
S. Bannister ◽  
...  
Keyword(s):  
New Zealand ◽  
Seismic Imaging ◽  
Imaging Techniques ◽  
Alpine Fault
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