902 resultados para Motions
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At Sleipner, CO2 is being separated from natural gas and injected into an underground saline aquifer for environmental purposes. Uncertainty in the aquifer temperature leads to uncertainty in the in situ density of CO2. In this study, gravity measurements were made over the injection site in 2002 and 2005 on top of 30 concrete benchmarks on the seafloor in order to constrain the in situ CO2 density. The gravity measurements have a repeatability of 4.3 µGal for 2003 and 3.5 µGal for 2005. The resulting time-lapse uncertainty is 5.3 µGal. Unexpected benchmark motions due to local sediment scouring contribute to the uncertainty. Forward gravity models are calculated based on both 3D seismic data and reservoir simulation models. The time-lapse gravity observations best fit a high temperature forward model based on the time-lapse 3D seismics, suggesting that the average in situ CO2 density is about to 530kg/m**3. Uncertainty in determining the average density is estimated to be ±65 kg/m**3 (95% confidence), however, this does not include uncertainties in the modeling. Additional seismic surveys and future gravity measurements will put better constraints on the CO2 density and continue to map out the CO2 flow.
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A facies-genetic and stratigraphic subdivision of the Quaternary sequence in the Shapkina River valley has been accomplished. The riverbank shows outcrops of three glacial complexes with different mineralogical-petrographic compositions and structural characteristics, which can be correlated and stratificated. Datings of intermoraine horizons (alluvial, marine, lacustrine, and lacustrine-boggy sediments) have been based on palynological and paleomicrotheriological data. The Middle Neopleistocene section can be divided into two till horizons corresponding to two autonomous glaciations (Pechora and Vychegda). They are separated by a member of subaqueous Rodionov sediments. The Pechora till formed in the course of glacier motions from the northeast. Glacial horizons are mainly composed of the Vychegda till transported from the Northwest terrigenous provenance. Lithology of the Upper Neopleistocene Polyarnyi till testifies to its formation in the upper course of the river from material transported from the Northeast terrigenous-mineralogical provenance in the upper course of the river and from the Fennoscandian glaciation center in the lower course of the river. The paper presents the first lithological investigation and substantiation of genesis of various facies of Neopleistocene intermoraine marine sediments (sediments of the beach and fore-beach zones and shallow-water shelf).
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"An enquiry towards a construction, delineation, and description of the symbols of the system of this world, and of the fluid powers, substances, motions, and courses in it, which were inter. al given in writing by God to David, and from him to Solomon, wrought by Hiram, and set upon two supporters before the entry into the first temple of God built by Solomon", p. 1-86.
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v. 1. Organization, apportionment, qualifications, prima facie title, elections.--v. 2. Elections, members, speaker, prerogatives, contempts.--v. 3. Investigations, inquiries, electoral count, impeachments, privilege.-- v. 4. Quorurm, order of business, appropriation bills, committees, committee of the whole.--v. 5. Debate, motions, amendments, voting, conference.--v. 6-8. Index-digest ( A to G; H to P; Q-Z)
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[no. 1] Necessary motions to perform operations.--[no. 2] Dictionary of motion study, words and terms.--[no. 3] Time definitions.
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Multiple titles included (Imprint varies): "Court and City Register, or, Gentleman's complete annual Kalendar"; "Free-Masons' Calendar..."; "Poor Robin, an Almanack"; "Gentleman's Diary, or the mathematical repository"; "Merlinus Liberatus"; Ladies Diary: or, Woman's almanack"; "Speculum anni: or, Season on the season"; "Coelestial atlas, containing a new Ephemeris of the planetary motions..."; "Parker's ephemeris"; "Remarkable news from the stars, or, an Ephemeris"; "Diary Companion being a Supplement to the Ladies' diary"; "Vox stellarum: or, a loyal almanack..."; etc...
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At head of title: Contributions to cosmogony and the fundamental problems of geology.
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No. 17 forms pt.2 (app.71) of the Annual report of the chief signal officer for the year 1885 (Annual report of the secretary of war ... 1885, vol. IV, pt. 2) It is issued also in the Congressional series, no. 2375 (49th Cong., 1st sess. House. Ex. doc.1, pt.2).
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Ceased with volume 18:2. Superseded by the Bullletin of the Astronomical Institutes of the Netherlands, Supplement series.
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[Part] B issued in 3 sections; [pt.] C, in 2 sections.
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Thesis (Ph.D.)--University of Washington, 2016-05
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Thesis (Ph.D.)--University of Washington, 2016-06
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Thesis (Master's)--University of Washington, 2016-06
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Thesis (Ph.D.)--University of Washington, 2016-06
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For the Western-Pacific region spread-F has been found to occur with delays after geomagnetic activity (GA) ranging from 5 to 10 days as station groups are considered from low midlatitudes to equatorial regions. The statistical (superposed-epoch) analyses also indicate that at the equator the spread-F, and therefore associated medium-scale traveling ionospheric disturbances (MS-TIDs) occur with additional delays around 16, 22 and 28 days representing a 6-day modulation of the delay period. These results are compared with similar delays, including the modulation, for D-region enhanced hydroxyl emission (Shefov, 1969). It is proposed that this similarity may be explained by MS-TIDs influencing both the F and D regions as they travel. Long delays of over 20 days are also found near the equator for airglow-measured MS-TIDs (Sobral et al., 1997). These are recorded infrequently and have equatorward motions, while normally eastward motions are measured at the equator. Also in midlatitudes D-region absorption events have been shown (statistically) to have similar long delays after GA. It is suggested that atmospheric gravity waves and associated MS-TIDs may be generated by some of the precipitations responsible for the absorption. The recording of the delayed spread-F events depends on the GA being well below the average levels around sunset on the nights of recording. This implies that lower upper-atmosphere neutral particle densities are necessary.