| 词汇 | example_english_seismic |
| 释义 | Examples of seismicThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. The papers are illustrated with maps, cross-sections, burial history curves, seismic lines, and photographs of cores, photomicrographs and even rocky outcrops. As the end of the winter approached, he commenced a series of experiments with the seismic equipment on the ice shelf and plateau edge. The brick chimneys integral to steam-powered mills were also much simpler structures than five-story pagoda, and hence more susceptible to seismic damage. There is a good balance of onshore field observation, offshore seismic data and analogue or mathematical modelling. Chapter 5 at 200 pages long is the longest chapter and covers the estimation of seismic wave amplitudes, including the use of ray series. The chapter on observational seismology begins with a discussion of seismic instrumentation. Chapter 2 deals with the basics of seismic wave propagation and introduces the reader to some of the ray theory results. The transition from upper to lower crust is here defined as the depth level where seismic velocities exceed 6.5 km/s. In a series of papers, forming much of the book, the problem of characterizing fractures from well data, seismic, and regional geological studies is discussed. Since then a significant body of knowledge on the nature of subsurface sediments has progressively emerged, first from piston cores and later from seismic lines. Each structure is very well illustrated, usually with more than one seismic profile as well as a map and occasionally potential field data. A few more words on seismic resolution and its physical basis would not have come amiss. Here, an accumulated reservoir of magma is observed as a region of anomalously low seismic velocities. The crater is not exposed at the surface, but is seen in seismic data and a number of drill cores. Sections on seismic signals and noise are interspersed with ones focusing on processing techniques. The fourth chapter on seismic reflection is by far the longest, and the most difficult to write since the technology develops so rapidly. Chapters on thin- and thickskinned structural styles are elegantly and extensively illustrated using regional cross-sections and interpreted seismic profiles. Tall solid concrete walls place mass high up in the building that exerts a large lateral force during seismic events. Their existence so far has not been confirmed by seismic data, probably because of their relatively small sizes. Section two ends with a discussion of various methods for constructing the seismic response of a model and the approximations underlying the various methods. Sections 22 and 27), although temporal resolution is very poor since it relies upon inter preted and depth-converted seismic data. Many of the seismic illustrations are dispiritingly poor. Most of these surveys collected coincident deep seismic reflection and wide-angle data of breathtaking quality. The accuracy of the stripping model depends on the available borehole, seismic and density data. Er rors in extension measurements from planar faults observed on seismic reflection lines. However, exploration and particularly production of hydrocarbons makes use of a great deal of the amplitude information embedded in the seismic data. The authors state that one of their principal aims is to 'improve interaction between geologically and geophysically inclined seismic interpreters'. The fractal nature of faulting can be used to predict the amount of extension accommodated on faults with offsets below the level of seismic resolution. A chapter on seismic refraction covers the basic principles well, though seismic tomography is discussed almost exclusively in the context of cross-borehole tomography. There is a considerable number of pull-out pages for the display of regional seismic lines and their geological interpretation. The book benefits greatly from extensive examples drawn from exploration and production, each extremely well illustrated using block diagrams, core photographs, seismic lines and logs. Four papers derive their conclusions from interpretation of reflection seismic data, presentation of which is difficult in small format and limited space. Further, such features would be difficult to detect on seismic reflection surveys. From here they move to classification of reflection terminations and the internal characteristics of seismic facies providing the necessary knowledge to recognize systems tracts. The cause for dewatering is unknown, but may involve a combination of deposition of water-saturated ash and seismic shocks during the eruption. Expedition members recorded seven years of synoptic meteorological observations and four years of seismic and magnetic observations. The huge amount of information on orogenic architecture derived from seismic profiling is almost completely omitted. The seismic reflection data processing consisted of a standard flow to reveal the prominent reflections along the profiles (lines 1, 2 and 3). In these seismic profiles we recognize the boundary between pre-growth strata and growth strata. The maps included show the surface and subsurface traces of the faults and the locations of the seismic lines illustrating them. An interesting discussion of visual cognition pitfalls in seismic display has general application. The example seismic profiles shown in the figures are not very representative of the quality of data acquired by modern surveys. Chapters introducing the volume and outlining the regional structural framework precede the centrepiece chapter that presents and inter prets the seismic sections. Viewed from an academic perspective, the current generation of three-dimensional seismic data (let alone future generations) is a sleeping giant. Since seismic reflection profiles are long and thin, computer screens are pretty useless for browsing. Examples are the simulation of seismic, acoustic and optical waves, and microwaves. There is no seismic line with a full system tract interpretation. The sedimentary succession is known in parts of the area from a denser network of commercial seismic profiles (not shown). A short final section discusses the problems and challenges of seismic hazard assessment in the context of the knowledge presented earlier. Measurements of seismic velocities indicate that the melt initially collects in reservoirs a t the base of the lithosphere. They include detailed crosssections, partly based on seismic lines, and illustrate well the deformation of the upper few kilometres of the crust. At £80.00 this is not an inexpensive book, but for a comprehensive guide to getting the most out of seismic data it has few competitors. Then the basic principles and advantages of computer-based inter pretation of seismic data and the tools that are available are covered. Textual glitches are few although seismic and sidescan sonar reproduction is not always adequate. However, several sections appear quite dated, including the discussion of migration by wavefront charts and the description of marine single channel seismic acquisition. Future editions might consider a more widespread use of seismic illustration. Discrepancies between measured and predicted values of radon indicate likely seismic activity. Their scientific program included seismic determinations of icethickness, measurements of gravity and total magnetic field, topographic surveying, and glaciological work to determine annual snowfall. What is more useful is that the structures illustrated by seismic data in the remainder of the book are indicated in bold text and heavy lines on maps. One powerful application of the probabilistic technique is to determine the value of additional data (such as elastic impedance) in classification of key facies types from seismic data. The authors synthesize the results of deep core drilling, seismic reflection profiling, mor phology and gravimetrics, sedimentology and petrology, geochemistry, and palaeontology in their detailed analysis of this structure. 493 to obtain seismic wave travel times. Seismic characteristics and indentification of negative flower structures, positive flower structures, and positive structural inversion. Five tectono-stratigraphic stages deduced from integration of structural and stratigraphic onshore field studies, new and existing biostratigrapic and radiometric dates and two seismic reflection lines are presented. The paper on sand 'extrudites' nicely mixes seismic and field descriptions of these volumetrically minor stratigraphic curios. Fifteen papers on specific sub-regions are loosely organized into genetic sections: biostratigraphic/provenance evidence, isotopic constraints, petrological and geochemical evidence, structural evolution, seismic traverses and deep crustal structure. Seismic velocity structure and composition of the continental crust. While most of the studies are from the exposed basins onshore, interesting material is included that comes from offshore basins and the subsurface as revealed through coring and seismic surveys. Seismic lines are also indicated. In the absence of seismic and well data, the surface thickness of the stratigraphic package within thrust sheets and surface dip data were used to extrapolate first-order structures at depth. More than supra-historical conceptual categories, these terms registered what was seen as a seismic change, taking place in history, in the relationship between life and art. Example fields from analog physical systems include seismic, ocean, sound, electromagnetic, and probability waves (either classical or quantum), in which properties of the medium are described by the appropriate equations. Next the authors consider seismic stratigraphy, beginning with the fundamentals of seismic resolution and processing, reviewing options for display and then the physical process of interpretation. Basement blocks have been extended by domino-style faulting (visible on seismic section) and, internally, by the formation of sediment-filled fissures (hatched, not visible on a seismic section). The account of deep water depositional elements returns the reader to the pragmatic theme of the book and is well illustrated by seismic cross-section and map views of the elements. Simultaneous velocity and interface tomography of normal-incidence and wide-aperture seismic traveltime data. The seismic sections, field observations and well corrrelations do not reveal any important thickness and facies variations or horst-graben systems witnessing the presence of the extensional forces in the field. They suggest that ethylene leaking up faults and fractures, following pulses of seismic activity, might explain the priestess's inspiration as the result of narcotic and 'not disagreeable mental clouding'. Can the rise of the research university be accounted for adequately without reference to any of these seismic changes in the relationship of the university with society? Speaking more broadly, perhaps the most salient point to remember here is that the fluctuation between performances of the self and technologies is of seismic proportions. The burying of nuclear waste is the greatest danger we face, because no one can predict seismic or underwater movements. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Although there have been recent improvements in seismic detection capability, we cannot foresee any scientific progress that will ever enable us to close this gap. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Any payment by oil companies to fishermen whose activities are affected by seismic surveys is entirely a matter for negotiation between the parties concerned. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 They are also asked to use the lowest feasible energy levels for seismic surveys in these areas. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 A number of observations can be made on the three-dimensional spatial-stratigraphic development of sourcing coals by the examination of seismic relationships and documented stratigraphy. The research focused on five areas: concrete durability, seismic base isolation, curtain wall design, roof materials, and building systems. In the present section the algorithms described above are adapted to the needs of seismic prospecting. The density and elastic properties of rock are both important in affecting the passage of seismic waves. Since then, global seismic tomography solutions have shown us that the slabs are even more complex and interesting than we thought. The amount of seismic data acquired onshore is very small. Each transect is complemented by links to field photographs, logs and seismic lines. The majority of the energy carried by a seismic sea wave is concentrated in the section of ocean wavelength spectrum between thirty and four-hundred miles. The book is broad in scope, bringing in such aspects as the constraints of seismic topography, and mantle convection in other planetary bodies. There is also a general lack of seismic reflection horizons as a result of the uniformity of the carbonate succession. Until recently our view of any seismic data was constrained by the two-dimensionality of the paper plot or computer screen. Side-scan sonar and seismic methods have been used widely to map these topographic structures. Many photographs and seismic sections have reproduced poorly, and/or are uninformative. Seismic facies are used to a limited extent, for example in the identification of seismically mappable slump deposits. The value of this volume at present is clear in that it permits geoscientists to view the potential of three-dimensional seismic data. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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