Zobrazeno 1 - 10
of 49
pro vyhledávání: '"J. P. Heppner"'
Publikováno v:
Journal of Geophysical Research: Space Physics. 98:1629-1652
The high-latitude spatial distributions of average signal intensities in 12 frequency channels between 4 Hz and 512 kHz as measured by the ac electric field spectrometers on the DE-2 spacecraft are analyzed for 18 mo of measurements. In MLT-INL (magn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1766ba9de555626673c2ee53f249ad9
https://doi.org/10.1029/92ja01836
https://doi.org/10.1029/92ja01836
Publikováno v:
Planetary and Space Science. 38:1077-1089
The Utah State University Ionospheric Model was run to obtain diurnally reproducible ionospheric densities and temperatures for summer and winter conditions using both distorted two-cell and three-cell convection patterns. Differences due to the diff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f99a433fec0047adcb5f62cf4c418685
https://doi.org/10.1016/0032-0633(90)90017-k
https://doi.org/10.1016/0032-0633(90)90017-k
Autor:
M. L. Miller, J. P. Heppner
Publikováno v:
Journal of Geophysical Research: Space Physics. 87:1633-1647
The considered investigation takes into account wind measurements conducted with the aid of 39 sounding rocket chemical release payloads. Attention is given to the geomagnetic dependence, winds and ion convection patterns, subauroral dayside measurem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45bcb6d9b890c97d8552484e392d37d4
https://doi.org/10.1029/ja087ia03p01633
https://doi.org/10.1029/ja087ia03p01633
Autor:
J. P. Heppner
Publikováno v:
Journal of Geophysical Research. 82:1115-1125
Model cross sections of the high latitude dawn-dusk electric field based on OGO-6 data are presented for the signature profiles, most frequently encountered for both + and -Y orientations of the interplanetary magnetic field. Line integrals give a to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1cdc068056fd4cfa2da77049dd618a86
https://doi.org/10.1029/ja082i007p01115
https://doi.org/10.1029/ja082i007p01115
Publikováno v:
Geophysical Research Letters. 7:881-884
An example of large subauroral poleward electric fields similar to those observed on OGO-6, S3-2 and AE-C (SAID) has been found in the magnetosphere near L = 4 and 2300 MLT using ISEE-1 electric field data. The event is located adjacent to and outsid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a2ec7cb41a09149392e11bb7e68c206
https://doi.org/10.1029/gl007i011p00881
https://doi.org/10.1029/gl007i011p00881
Autor:
Timothy L. Killeen, M.F. Smith, David Rees, R. Gordon, J. P. Heppner, Paul B. Hays, Nelson W. Spencer, Tim Fuller-Rowell, L. E. Wharton, N. C. Maynard
Publikováno v:
Planetary and Space Science. 34:1-40
Patterns of magnetospheric energetic plasma precipitation as a function of the Y component of the Interplanetary Magnetic Field (IMF) are studied. The development of a three-dimensional, time-dependent global thermospheric model using a polar convers
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e6b631b7510ac69cf346111174759f0
https://doi.org/10.1016/0032-0633(86)90100-5
https://doi.org/10.1016/0032-0633(86)90100-5
Autor:
B. G. Ledley, Laurence J. Cahill, Masahisa Sugiura, W. H. Farthing, N. C. Maynard, J. P. Heppner
Publikováno v:
Geophysical Research Letters. 9:985-988
Initial results of the electric and magnetic field observations from the DE-2 satellite show a remarkably good correlation between the north-south component of the electric field and the east-west component of the magnetic field in many passes of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad870644d9b927021edbe730ec05eba9
https://doi.org/10.1029/gl009i009p00985
https://doi.org/10.1029/gl009i009p00985
Publikováno v:
Journal of Geophysical Research: Space Physics. 87:1445-1454
Electric field measurements from the long-wire double-probe instrument (baseline of 179 m) on ISEE 1 have shown the magnetospheric electric field on auroral L shells to be extremely turbulent during periods of magnetic activity. During intense activi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7d854a9abafc468becea757019bb02b
https://doi.org/10.1029/ja087ia03p01445
https://doi.org/10.1029/ja087ia03p01445
Publikováno v:
IEEE Transactions on Geoscience Electronics. 16:253-257
The double-probe floating-potential technique is applied using long-wire antenna-probes with an effective electric-field baseline of 179 meters. 14-bit A/D conversion is used for the prime dc-field measurements. An 8-channel spectrometer is used for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2cc97b5c20d681f0a8c3b65028d62669
https://doi.org/10.1109/tge.1978.294557
https://doi.org/10.1109/tge.1978.294557
Publikováno v:
Geophysical Research Letters. 9:981-984
Intense, variable electric fields have been observed by DE-2 using the double probe technique at ionospheric altitudes in high latitude regions. Measurements are made of both components of the electric field in the orbit plane (90 deg geographic incl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7d727351ea9479d0938215df21c01e8
https://doi.org/10.1029/gl009i009p00981
https://doi.org/10.1029/gl009i009p00981