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  • GEOPHYSICS  (40)
  • SPACE RADIATION  (7)
  • INSTRUMENTATION AND PHOTOGRAPHY  (6)
  • 11
    Publication Date: 2011-08-16
    Description: The charged particle observations proposed for the new low altitude weather satellites, TIROS-N, are described that will provide the capability of routine monitoring of the instantaneous total energy deposition into the upper atmosphere by the precipitation of charged particles from higher altitudes. Estimates are given to assess the potential importance of this type of energy deposition. Discussion and examples are presented illustrating the importance in distinguishing between solar and geomagnetic activity as possible causative sources.
    Keywords: GEOPHYSICS
    Type: NASA. Goddard Space Flight Center Possible Relationships between Solar Activity and Meteorol. Phenomena; p 250-257
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  • 12
    Publication Date: 2011-08-10
    Description: Windowless continuous-channel electron multiplier detecting low energy charged particles in space
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
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  • 13
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    Publication Date: 2011-08-18
    Description: A Chemical Release Module to be carried into orbit by the shuttle is described. The module would release chemicals from orbiting satellites in order understand processes within the Earth's magnetosphere, atmosphere and ionosphere. A large number of potential experiments are identified, ranging from introducing traceable material into the solar wind in order to study its transport to and within the magnetosphere, to injecting material into the outer magnetosphere to simulate the precipitation of trapped charged particles, to the release of material at lower altitudes to create waves both mechanical and electromagnetic.
    Keywords: GEOPHYSICS
    Type: Alabama Univ. UAH(NASA Workshop on the Use of a Tethered Satellite System; p 135-150
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  • 14
    Publication Date: 2011-08-17
    Description: Data obtained by Polar 3, launched from northern Norway January 27, 1974, are interpreted. The rocket, which traversed nearly 3 deg of latitude, crossed over a stable IBC II auroral arc in the positive bay region and continued north to a convection boundary which has been identified as the Harang discontinuity. Measurements of the complete electric field vector, of energetic electrons, and of auroral emissions were used to study the convection topology in the premagnetic midnight region. The inverted V nature of the electron precipitations at the convection boundary, compared with the lack of such structure over the arc which was within the positive bay region, is thought to indicate that auroral arcs are likely to be associated with inverted V type precipitation only at or poleward of convection boundaries and their eddy structures.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research; 82; June 1
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  • 15
    Publication Date: 2011-08-17
    Description: The paper reports the results of energetic auroral electron and vector electric field measurements taken near and above a discrete auroral form and discusses their electrodynamic implications. Height-integrated Hall and Pedersen conductivities are computed in a quantitative fashion along the rocket payload trajectory. These conductivities, together with the electric fields, are used to describe the local auroral electrojet current system and to demonstrate an inverse relationship between the local electric field intensity and the height-integrated Pedersen conductivity. An analysis is presented of the divergence of both the electric field and the horizontal current as an effort to infer space charge densities and magnetic-field-aligned electrical currents near an auroral arc.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research; 82; June 1
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  • 16
    Publication Date: 2013-08-31
    Description: At the interface between two plasma clouds with different densities, temperatures, and/or bulk velocities, there are large charge separation electric fields which can be modeled in the framework of a collisionless theory for tangential discontinuities. Two different classes of layers were identified: the first one corresponds to (stable) ion layers which are thicker than one ion Lamor radius; the second one corresponds to (unstable) electron layers which are only a few electron Larmor radii thick. It is suggested that these thin electron layers with large electric potential gradients (up to 400 mV/m) are the regions where large-amplitude electrostatic waves are spontaneously generated. These waves scatter the pitch angles of the ambient plasmasheet electron into the atmospheric loss cone. The unstable electron layers can therefore be considered as the seat of strong pitch angle scattering for the primary auroral electrons.
    Keywords: GEOPHYSICS
    Type: NASA. Marshall Space Flight Center Double Layers in Astrophysics; p 287-294
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  • 17
    Publication Date: 2011-08-12
    Description: Monoenergetic electron flux associated with prebreakup auroral display observed with rocket- borne instruments, discussing origin and acceleration mechanisms
    Keywords: GEOPHYSICS
    Type: ; ADEMIE DES SCIENCES
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  • 18
    Publication Date: 2016-06-07
    Description: The Barnes PRT-5 infrared radiometer and L-band channel of the multifrequency microwave radiometer are used to survey the distribution of surface water temperature and salinity. These remote sensors were flown repetitively in November 1971 over the outflow of the Mississippi River into the Gulf of Mexico. Data reduction parameters were determined through the use of flight data obtained over a known water area. With these parameters, the measured infrared and microwave radiances were analyzed in terms of the surface temperature and salinity.
    Keywords: GEOPHYSICS
    Type: 4th Ann. Earth Resources Program Rev., Vol. 1 27p (SEE N72-29302 20-13)
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  • 19
    Publication Date: 2016-06-07
    Description: Monitoring of earth's atmosphere was conducted for several years utilizing the ITOS series of low-altitude, polar-orbiting weather satellites. A space environment monitoring package was included in these satellites to perform measurements of a portion of earth's charged particle environment. The charged particle observations proposed for the low-altitude weather satellite TIROS N, are described which will provide the capability of routine monitoring of the instantaneous total energy deposition into the upper atmosphere by the precipitation of charged particles from higher altitudes. Such observations may be of use in future studies of the relationships between geomagnetic activity and atmospheric weather pattern developments. Estimates are given to assess the potential importance of this type of energy deposition. Discussion and examples are presented illustrating the importance of distinguishing between solar and geomagnetic activity as possible causative sources. Such differentiation is necessary because of the widely different spatial and time scales involved in the atmospheric energy input resulting from these various sources of activity.
    Keywords: GEOPHYSICS
    Type: NASA. Goddard Space Flight Center Possible Relationships between Solar Activity and Meteorol. Phenomena; p 155-159
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  • 20
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    Publication Date: 2018-12-01
    Description: Rocket observations of energy spectra of auroral electrons
    Keywords: GEOPHYSICS
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