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  • GEOPHYSICS  (823)
  • Chemical Engineering  (691)
  • 1985-1989  (1,514)
  • 1988  (1,514)
  • 1
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    New data on the formation conditions and age of the Kamensk and Gusev astroblemes (1988)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: Discussed is new information recently published on the higher contents of siderophilic in the block breccia, fragments of coesite rocks in the Glubokinskiy series within the Kamenskiy astrobleme. New geological data which have refined the concept regarding the structure and age of the Kamenskiy astrobleme are presented.
    Keywords: GEOPHYSICS
    Type: NASA-TT-20212 , NAS 1.77:20212
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  • 2
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    Boundary layer dynamics in the description of magnetospheric substorms (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: This paper presents an analysis of eleven magnetospheric substorm events for which good-quality ground-based magnetometer data and ISEE satellite data were both available. It is shown that the magnetotail particle and field observations associated with a substorm expansive phase can be explained through the spatial movement of the boundary layers and central plasma sheet in the magnetotail. The sweeping of these regions past the satellite, even in the absence of temporal variations within the various regions, can lead to a set of plasma flow observations typical of what is observed in the magnetotail during substorm activity.
    Keywords: GEOPHYSICS
    Type: AD-A209803 , Journal of Geophysical Research (ISSN 0148-0227); 93; 14411-14
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  • 3
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    Plasma waves in the range of the lower hybrid frequency - ISEE 1 and 2 observations at the earth's bow shock (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: This report presents a characterization of plasma wave noise in the range of the lower hybrid frequency associated with 65 crossings of earth's bow shock observed by the ISEE 1 and 2 satellites. Wave growth generally becomes detectable at the upstream edge of the shock foot, increases at the upstream edge of the shock ramp, peaks within the ramp, and then quickly decays to steady downstream values. The upstream extent of the noise is on the same order as that of specularly reflected gyrating ions. Similar profiles were observed in subcritical and supercritical shocks, and no special behavior was associated with the first critical Mach number. Spectra in the foot and ramp were similar in shape, although the noise was 1 to 2 orders of magnitude more intense in the shock ramps than in the feet. Electric field intensities are positively correlated with solar wind speed and inversely related to electron beta and Mach number. Magnetic components are positively correlated with Mach number and beta. The results are generally consistent with suggestions that the noise consists of lower hybrid waves driven by reflected gyrating ions in the foot, and by additional instabilities, such as the cross-field current, in the shock ramp.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research (ISSN 0148-0227); 93; 9695-970
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  • 4
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    Energy spectra of plasma sheet ions and electrons from about 50 eV/e to about 1 MeV during plamsa temperature transitions (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: ISEE-1 charged-particle measurements obtained during eight plasma temperature transitions (PTTs) in 1978-1979 are compiled in tables and graphs and analyzed in detail, comparing the ion and electron differential energy spectra with the predictions of theoretical models. PTTs are defined as approximately 1-h periods of low bulk plasma velocity and steadily increasing or decreasing thermal energy. A Maxwellian distribution is found to be inadequate in describing the PTT energy spectra, but velocity-exponential and kappa distributions are both successful, the latter especially at higher energies. The power-law index kappa varies from PTT to PTT, but the high-energy spectral index and overall shape of the distribution remain constant during a PTT; both spatial and temporal effects are observed.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research (ISSN 0148-0227); 93; 2562-257
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  • 5
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    The upper atmosphere: Threshold of space (1988)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Keywords: GEOPHYSICS
    Type: NASA-NP-105 , NAS 1.83:105
    Format: application/pdf
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  • 6
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    Three-dimensional magnetosheath plasma ion distributions from 200 eV to 2 MeV (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: This paper presents initial measurements, made with ISEE 1 plasma and energetic-particle instruments, of the three-dimensional magnetosheath plasma ion flow and the spectrum over the energy range of 200 eV to 2 MeV, obtained on two magnetosheath traversals, one on the dawn (December 19, 1977) and the other on the dusk (July 7, 1978) flanks of the magnetosphere. The data suggest that the magnetosheath plasma ion population often consisted of a shocked solar wind component, of energy not greater than 5 keV, and a magnetospheric high-energy (not below 5 keV) component. The shocked solar wind component generally behaved independently of the magnetic field direction, indicating that the magnetic field was carried along in the bulk plasma flow. The high-energy tail was highly modulated by the magnetic field.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research (ISSN 0148-0227); 93; 12783-12
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  • 7
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    Present state of knowledge of the upper atmosphere 1988: An assessment report (1988)
    In:  CASI
    Details
    Publication Date: 2019-08-27
    Description: This document was issued in response to the Clean Air Act Amendments of 1977, Public Law 95-95, mandating that NASA and other key agencies submit biennial reports to Congress and EPA. NASA is to report on the state of our knowledge of the upper atmosphere, particularly the stratosphere. This is the sixth ozone assessment report submitted to Congress and the concerned regulatory agencies. Part 1 contains an outline of the NASA Upper Atmosphere Research Program and summaries of the research efforts supported during the last two years. An assessment is presented of the state of knowledge as of March 15, 1988 when the Ozone Trends Panel, organized by NASA and co-sponsored by the World Meteorological Organization, NOAA, FAA and the United Nations Environment Program released an executive summary of its findings from a critical in-depth study involving over 100 scientists from 12 countries. Chapter summaries of the International Ozone Trends Panel Report form the major part of this report. Two other sections are Model Predictions of Future Ozone Change and Chemical Kinetics and Photochemical Data for Use in Stratospheric Modeling. Each of these sections and the report in its entirety were peer reviewed.
    Keywords: GEOPHYSICS
    Type: NASA-RP-1208 , NAS 1.61:1208
    Format: application/pdf
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  • 8
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    Bilateral symmetry elements of the Zhamanshin impact crater (1988)
    In:  CASI
    Details
    Publication Date: 2019-08-27
    Description: The internal structure of the Zhamanshin impact structure and the nature of rocks developed within it are studied to establish the impact structure parameters. It is found that the diameter of the visible crater is about 13 km. The small annular structures observed are found to not be secondary craters, and no correlation is found between the asymmetrical distribution of ejecta material and the arrangement of these annular forms.
    Keywords: GEOPHYSICS
    Type: NASA-TT-20288 , NAS 1.77:20288
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  • 9
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    Global Geospace Science Programme (1988)
    In:  Other Sources
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    Publication Date: 2019-08-27
    Description: The Global Geospace Science (GGS) Program, an element of the international Solar Terrestrial Physics Program dedicated to the study of the global plasma dynamics of the solar-terrestrial environment, is discussed. Past research on the injection of solar wind ions into the magnetosphere and on the detection of ions in the terrestrial ring current of both solar wind and ionospheric origins is reviewed, showing its relevance for the GGS program. Research on the interplanetary magnetic field, the auroral electrojet, the outer magnetosphere, the geomagnetic tail, the ionospheric electric field and the related electron precipitation is also addressed. The results demonstrate that the solar wind and the ionsophere both contribute to the magnetospheric particle population. Unanswered questions regarding hot plasma sources, transport processes, energy storage in the magnetic field, and energization of plasmas are discussed. The relevant mission strategy, instrumentation, theory and modeling, and data collection are addressed.
    Keywords: GEOPHYSICS
    Type: (ISSN 0007-084X); 41; 81-93
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  • 10
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    Outer atmospheric research - One tether capability (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-08-14
    Description: One specific tether application of far-reaching promise would be to conduct outer atmospheric research by using a tethered subsatellite deployed downward from an orbiting 'mother' craft such as the Shuttle Orbiter. This capability would gather scientific and engineering/technology information about the outer atmosphere, primarily from 150 km down to perhaps 90 km. This paper presents current determinations of specific user needs, tether capabilities, and technological and program requirements to fulfill this application of tethers in space.
    Keywords: GEOPHYSICS
    Type: Intl. Conference on Space Tethers for Science in the Space Station Era; Oct 04, 1987 - Oct 08, 1987; Venice; Italy
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