نتایج جستجو برای: geological
تعداد نتایج: 24790 فیلتر نتایج به سال:
The data management of a large geological survey is not an easy task. To efficiently store and manage the huge datasets, a database of geological information on the basis ofMicrosoftAccess has been created. By using the database of geological information, we can make easily and scientifically store andmanage the large geological information.The geological maps—borehole diagrams, the rose diagra...
The 3D data model is an important issue to be solved in 3DGIS. Based on the study of the basic characteristics of geological objects and the especial requirement for computational 3D geological volume modeling, the authors give out an object-oriented 3D topologic data model for geological volume modeling. In this data model, the geological volumes are divided into four classes: the composite vo...
Preliminary geological investigations have been conducted to find suitable construction site and to assess engineering geological characteristics before detailed in situ investigation for large scale construction activities such as highway, railroad, subway or underground cavern constructions. The geological stability is a very important and critical factor for safe maintenance of structures an...
National geological survey works have characteristics of data enormousness, computing denseness, resource distribution, and applications heterogeneousness. As innovative information infrastructure and service architecture, grid can meet geological survey application requirements by implementing sharing and cooperation of distributed and heterogeneous resources. Based on grid technologies and OG...
saluk mount is selected for devonian biostratigraphy. this area located at southwest of bojnurd. in this study three sections are selected and two sections, chahar-borj and tabar sections with a thickness of 650 m, which consist mainly of calcareous sediments was studied in detailed but third section, qelli section, with a thickness of about 450m which consist mainly of sandstone and evaporates...
s and Program, Geological Society of America, Denver,Colo., 28(7,) A-261.Turcios, L. M., and Gray, J. R. (2001). „U.S. Geological Surveysediment and ancillary data on the World Wide Web.‰ Proceedings of the 7th Federal Interagency Sedimentation Conference, Subcommittee on Sedimentation, Reno, Nev.,Poster 31-36.Turcios, L. M., Gray, J. R., and Ledford, A. L. (2000). „...
Accurate salt interpretation involves an integration of geology and geophysics. In the practice of salt interpretation and model building in depth imaging, we see two problems that could happen: exclusive geophysical interpretation without geological input and insufficient geological interpretation without understanding how the geophysical data are processed and without evaluating the limit and...
3D geological models become increasingly important and popular recently. But it is too difficult to share the models because of different models come from different modeling software. It is urgent to solve the problem for the unification of data management. Based on it, the paper explains basic construction and architecture if GeoSciML to discuss how to take advantage of this standard and defin...
Vast quantities of natural gas are held in hydrate form in geologic reservoirs in sub-oceanic sediments and arctic permafrost zones (KVENVOLDEN, 1988; SLOAN, 1998), where conditions of high pressure and low temperature are within the hydrate stability region. In 1995, the U.S. Geological Survey (USGS) conducted a study to assess the quantity of natural gas hydrate resources in the United States...
A late Pliocene – early Pleistocene, 2.9–2.0Ma, diatom record from the Antarctic Geological Drilling Program (ANDRILL) MIS drillcore AND-1B is presented. This core, recovered from beneath the Ross Ice Shelf south of Ross Island, comprises multiple diatomaceous-sediment units deposited during interglacial periods with open water over the core site. These represent interglacial phases of orbitall...
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