High Resolution Seismic Reflection Techniques for Subsurface Models in Groundwater Hydrology by Sjef Meekes

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Open LibraryOL12803484M
ISBN 109040714452
ISBN 109789040714450

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High resolution seismic reflection techniques for subsurface models in groundwater hydrology. Delft: Delft University Press, © (OCoLC) Material Type: Thesis/dissertation: Document Type: Book: All Authors / Contributors: Jozef Antonius Chrysostomus Meekes.

High resolution seismic reflection techniques for subsurface models in groundwater hydrology: a multi-disciplinary study of a tool for the delineation and characterisation of the subsurface. toon extra info.

door Jozef Antonius Chrysostomes Meekes. Auteur(s). High resolution seismic reflection techniques for subsurface models in () Pagina-navigatie: Main; Save publication. Save as MODS; Export to Mendeley; Save as EndNote; Export to RefWorks; Title: High resolution seismic reflection techniques for subsurface models in groundwater hydrology: Author: Meekes, J.A.C.

Thesis advisor. Seismic reflection methods provide information on geologic structure thousands of meters below the surface, whereas seismic refraction m ethods-of interest in groundwater studies-go only a bout Author: A.

Balasubramanian. Dual gradient mapping (measurements performed at two depth levels), two-dimensional (2-D) resistivity imaging, refraction methods and high-resolution reflection methods have been applied on a characteristic karst case in Croatia.

General overview on the subsurface resistivity distribution has been reached by using the gradient mapping measurements.

Shallow high resolution seismic techniques possess the necessary resolution potential to delineate changes in the confining unit as inferred from drill data. Seismic reflection is a surface geophysical technique that relies on the reflection of sound waves from abrupt subsurface changes in material velocity and/or density (Appendix B).

select groundwater targets from those methods alone. For exploration depths of 1, to 2, feet, the seismic reflection and controlled source audio magnetotellurics / magnetotellurics (CSAMT/MT) methods have proven to be successful. However, using high-resolution seismic at those depths is very expensive, and it is often difficult to interpret.

Moreover, some specific aspects of the groundwater models, such as the handling of subsurface evapotranspiration, are still underdeveloped. This knowledge gap created a scientific niche for this. Pugin, A. J.-M. et al.“Multicomponent high-resolution seismic reflection profiling”, The Leading Edge, p).

Note: Seismic reflection is affected by external seismic noise and is recommended to be utilised in areas of low seismic noise e.g.

away from active drill rigs. Where a large enough acoustic impedance is not present a. Haeni FP, Melvin RL () High-resolution continuous seismic reflection study of a stratified-drift deposit in Connecticut. Proc. of the NWWA/EPA Conference on Surface and Borehole Geophysical Methods in Ground Water Investigations, San Antonio, Texas, pp – Google Scholar.

Cavity detection using high-resolution seismic reflection methods, Mining Engineer Butler, D. K., Microgravimetric and gravity gradient surveys for detection of subsurface cavities, Geophysics 49(7), [1] Mapping hydrological parameter distributions in high resolution is essential to understand and simulate groundwater flow and contaminant transport.

Of particular interest is surface‐based ground‐penetrating radar (GPR) reflection imaging in electrically resistive sediments because of the expected close link between the subsurface water content and the dielectric permittivity, which.

There is growing evidence that passive margin sediments in offshore settings host large volumes of fresh and brackish water of meteoric origin in submarine sub-surface reservoirs. Marine geophysical methods, in particular seismic reflection data, can help characterize offshore hydrogeological systems and yet the existing global database of industrial basin wide surveys remains untapped in this.

Seismic reflection is ideal for mapping geology at depths exceeding 50 m. Deep seismic reflection surveying is the most advanced technique in geophysics today, thanks to its application on a huge scale for oil and gas exploration.

Reflection seismology (or seismic reflection) is a method of exploration geophysics that uses the principles of seismology to estimate the properties of the Earth's subsurface from reflected seismic method requires a controlled seismic source of energy, such as dynamite or Tovex blast, a specialized air gun or a seismic vibrator, commonly known by the trademark name Vibroseis.

Seismic methods involve measuring the propagation of seismic waves through earth materials. In seismic surveys, seismic waves radiate outward from a sound source at the surface, which can be an explosive charge or a mechanical impact. The refraction technique uses a long array of geophones to sense refracted waves, and the reflection technique uses a condensed array near the source to.

Seismic Reflection. HGI is adept at providing 2D and small scale 3D seismic reflection surveys. We typically employ the seismic reflection technique for surveys requiring higher resolution or greater imaging depths than seismic refraction can provide, or where the survey area is constrained.

reflection techniques. The seismic reflection method is a powerful technique for underground exploration that has been in use for over 60 years (see Waters, ; Dobrin, ; Coffee% ). The use of seismic reflection surveys for targets shallower than 30 m has not been widespread until the ’s, however.

high resolution shallow seismic subsurface characterization a dissertation submitted to the department of geophysics and the committee of graduate studies of stanford university in partial fulfillment of the requirements for the degree of doctor of philosophy ran bachrach september In my Ph.D.

dissertation, I focused on bridging the gap between high-resolution seismic imaging based on industry-style reflection surveys and large-scale imaging based on earthquake data. With collaborators at Cornell University, we develop techniques that enable the resolution of very fine details of subsurface structure across different.

Ran Bachrach, Tapan Mukerji, The effect of texture and porosity on seismic reflection amplitude in granular sediments: Theory and examples from a high‐resolution shallow seismic experiment, GEOPHYSICS, /, 69, 6, (), ().

Our purpose here was to present a likely or possible seismic image of the subsurface at the IWS region as a model to guide potential seismic exploration in the region. So, we adopt the brief theoretical background given in Thorbecke & Draganov () as derived by Wapenaar & Fokkema () from reciprocity theory for our modelling.

Oil and gas exploration and engineering studies in water‐covered areas routinely use continuous seismic profiling techniques to obtain subsurface geologic information. Such profiling also can be used effectively in hydrologic studies to define the geologic framework of aquifer systems, to locate hydrologic boundaries, and in some places, to.

Seismic Method. AGS uses varying seismic methods to map geologic and hydrogeologic features within the subsurface. These methods include refraction, reflection, multichannel analysis of surface waves (MASW), spectral analysis of surface waves (SASW), passive shear wave velocity (pVs also known as ReMi), and downhole seismic.

Both penetration and resolution of the refraction method is inferior to those of seismic reflection if both techniques use the same seismic source and work well in a given situation.

Penetration with a hammer is usually up to 30 metres while greater penetration is achieved with explosives or weight drop. 10 Every individual can not go for test drilling. During the last two centuries, more and more techniques have been developed to explore the groundwater. They are classified into surface and sub-surface methods.

Surface methods The surface methods are easy to operate and implement. Seismic techniques are commonly used to determine site geology, stratigraphy, and rock quality. These techniques provide detailed information about subsurface layering and rock geomechanical properties using seismic acoustical waves.

Reflection and Refraction are the most commonly used seismic techniques. These methods determine geological. Seismic Reflection Profiles and Subsurface Geology of the Area Interested by the – Earthquake Sequence (Central Italy) as well as the coseismic deformations of the topographic surface observed by geodetic techniques and field mapping.

Insights From High‐Resolution Velocity Models, Tectonics, /TC, 37, Waveguides formed between the earth's free‐surface and sharp subsurface velocity discontinuities, such as the watertable, may have a significant impact on high‐resolution seismic refraction and reflection data.

Energy trapped in such waveguides may propagate over long distances with little loss due to geometrical spreading.

High resolution seismic reflection surveys provide definitive information on the locations and types of faults, as well as the location of buried channels. Shallow, high resolution seismic reflection surveys are playing an increasingly important role in geotechnical investigations.

When correctly used, seismic. Once the locations of the bedrock valleys were established, a high-resolution seismic refraction method was used. This method involved a channel system, multiple shots, and end-to-end or over lapping spread cables to produce continuous profiling across the bedrock valleys.

Depth to bedrock under each geophone was obtained using this method. A h-resolution reflection seismic igh survey was conducted to determine whether it is possible to map the extent of the mine workings. Two 94 m profiles (tied to boreholes) were surveyed using asledgehammer source.

Processing was optimized to image the shallow reflections. The refraction seismic models and stacked time sections were compared and. @article{osti_, title = {Groundwater penetrating radar and high resolution seismic for locating shallow faults in unconsolidated sediments}, author = {Wyatt, D E and South Carolina Univ., Columbia, SC and Waddell, M G and Sexton, B G}, abstractNote = {Faults in shallow, unconsolidated sediments, particularly in coastal plain settings, are very difficult to discern during subsurface.

This open file report discusses the work done to complete a high-resolution, seismic reflection profile of the area around the Lake Belt Reservoir Pilot Project.

Lidz, B.H., and Cunningham, K.J.,Chronologic model and transgressive-regressive signatures in the late Neogene siliciclastic foundation (Long Key Formation) of the Florida. Since the late 90s, sophisticated geophysical techniques have been developed to estimate near-surface velocity models as a proxy for subsurface stiffness in seismic applications with different targets (Bergman et al., and ; Heincke et al., ).

shallow seismic reflection techniques provided images of alternat-ing sand and clay sequences with average thicknesses on the order of 6 to 9 m. The land data have a dominant frequency of about Hz, providing a minimum vertical bed resolution of about 2 m.

Continuous seismic reflection data collected in the Neuse River. The 2e of Seismic Stratigraphy and Depositional Facies Models summarizes basic seismic interpretation techniques and demonstrates the benefits of integrated reservoir studies for hydrocarbon exploration.

Topics are presented from a practical point of view and are supported by well-illustrated case histories. The reader is taken from a basic level to more advanced study techniques. Shallow high resolution 2-D and 3-D seismic reflection techniques are assisting in the subsurface delineation of a surface collapse feature (sinkhole) at Weeks Island, Louisiana.

Seismic reflection surveys were conducted in March Data from walkaway noise tests were used to assist selection of field recording parameters. HGI has applied seismic survey methods to improving the understanding of numerous geological, geotechnical, and hydrogeological projects for over 20 years.

Seismic methods are ideally suited to investigating layered media and we employ a variety of techniques, including seismic refraction, seismic reflection, and multi-channel analysis of surface waves (MASW), to perform both large- and.

For about seven decades seismic reflection techniques have been successfully used to investigate subsurface features for petroleum exploration.

In the last 15 years, however, this method has been applied to solve engineering and environmental problems as a result of new equipment and advances in processing techniques which now make it a very cost-effective approach. For many reasons, knowledge concerning the Earth’s shallow subsurface is of interest in groundwater, engineering, and environmental contexts.

In recent years, shallow seismic reflection methods have been applied to near-surface geological problems including bedrock detection (Hunter et al., ; Miller et al., ), shallow fault.data provides extremely high resolution images of the Quaternary sediments.

Allerton Park study area In the Allerton Park area, high resolution geophysical imaging included about 19 km of P-wave (conventional acquisition methods) and 7 km of SH-wave (landstreamer) seismic reflection, and km of resistivity profiles (Pugin et al., ).The extension of the established techniques to near-surface applications is relatively new, circa the s, and less mature.

For instance, the practical use of ground penetrating radar (GPR) and seismic reflection techniques for environ- mental purposes dates only from the mids, though many of the techniques themselves date from the s.

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