A HYBRID EQUATION OF STATE FOR THE QUASI-STATIC CENTRAL PLASMA SHEET

被引：12
作者：
KAN, JR [1 ]
SUN, W [1 ]
BAUMJOHANN, W [1 ]
机构：
[1] MAX PLANCK INST EXTRATERRESTR PHYS,W-8046 GARCHING,GERMANY
来源：
GEOPHYSICAL RESEARCH LETTERS | 1992年 / 19卷 / 04期
关键词：
D O I：
10.1029/91GL02939
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
The plasma pressure calculated from the force balance equation in the Tsyganenko magnetic field model under quiet conditions is found to be in good agreement with the observed pressure distribution in the central plasma sheet. This result indicates that the central plasma sheet can exist without a minimum-B region in a quasi-steady state. The plasma density and temperature measured by AMPTE/IRM in the central plasma sheet under quiet conditions fall in between the predictions of the adiabatic equation of state and the isotropized magnetic-moment equation of state. A hybrid equation of state derived from a simple combination of the adiabatic equation of state and the magnetic-moment equation of state is shown to be in excellent agreement with AMPTE/IRM data.
引用
收藏
页码：421 / 424
页数：4
相关论文
共 11 条
  • [1] DETERMINATION OF THE POLYTROPIC INDEX IN THE PLASMA SHEET
    BAUMJOHANN, W
    PASCHMANN, G
    [J]. GEOPHYSICAL RESEARCH LETTERS, 1989, 16 (04) : 295 - 298
  • [2] ERICKSON GM, 1984, GEOPHYS MONOGR SER, V30, P296, DOI DOI 10.1029/GM030P0296
  • [3] OBSERVATIONAL DETERMINATION OF THE ADIABATIC INDEX IN THE QUIET TIME PLASMA SHEET
    HUANG, CY
    GOERTZ, CK
    FRANK, LA
    ROSTOKER, G
    [J]. GEOPHYSICAL RESEARCH LETTERS, 1989, 16 (06) : 563 - 566
  • [4] STRUCTURE OF MAGNETOTAIL CURRENT SHEET
    KAN, JR
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH, 1973, 78 (19): : 3773 - 3781
  • [5] ISOTROPIZED MAGNETIC-MOMENT EQUATION OF STATE FOR THE CENTRAL PLASMA SHEET
    KAN, JR
    BAUMJOHANN, W
    [J]. GEOPHYSICAL RESEARCH LETTERS, 1990, 17 (03) : 271 - 274
  • [6] ON THE POSSIBILITY OF QUASI-STATIC CONVECTION IN THE QUIET MAGNETOTAIL
    KIVELSON, MG
    SPENCE, HE
    [J]. GEOPHYSICAL RESEARCH LETTERS, 1988, 15 (13) : 1541 - 1544
  • [7] SURVEY OF 0.1-KEV/E TO 16-KEV/E PLASMA SHEET ION COMPOSITION
    LENNARTSSON, W
    SHELLEY, EG
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1986, 91 (A3): : 3061 - 3076
  • [8] ON THE CAUSE OF APPROXIMATE PRESSURE ISOTROPY IN THE QUIET NEAR-EARTH PLASMA SHEET
    NOTZEL, A
    SCHINDLER, K
    BIRN, J
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1985, 90 (NA9): : 8293 - 8300
  • [9] MAGNETOSPHERIC PLASMA PRESSURES IN THE MIDNIGHT MERIDIAN - OBSERVATIONS FROM 2.5 TO 35 RE
    SPENCE, HE
    KIVELSON, MG
    WALKER, RJ
    MCCOMAS, DJ
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1989, 94 (A5): : 5264 - 5272
  • [10] STATIC MAGNETIC-FIELD MODELS CONSISTENT WITH NEARLY ISOTROPIC PLASMA PRESSURE
    SPENCE, HE
    KIVELSON, MG
    WALKER, RJ
    [J]. GEOPHYSICAL RESEARCH LETTERS, 1987, 14 (08) : 872 - 875
12