50 3 2007 5 CHINESE JOURNAL OF GEOPHYSICS Vol. 50, No. 3 May, 2007,,, 2007, 50 (3) :678 683 Zou H, Chen H F, Zou J Q, et al. Comparison between the observation of the particle detector inside ZY21 Satellite and the model of the radiation belt. Chinese J. Geophys. (in Chinese), 2007, 50 (3) :678 683 1, 1, 1, 1, 1, 1, 2, 2, 2 1, 100871 2 501, 100086 AE8ΠAP8,, AE8 NOAA,( ) ( ),, 90 0,,,, 0001-5733(2007)03-0678 - 06 P353 2006-07 - 28, 2007-01 - 23 Comparison bet ween the observation of the particle detector inside ZY21 Satellite and the model of the radiation belt ZOU Hong 1, CHEN Hong2Fei 1, ZOU Ji2Qing 1, SHI Wei2Hong 1, XIAO Zuo 1, HAO Yong2Qiang 1, WU Zhong2Xiang 2, XIANG Hong2Wen 2, ZHU Wen2Ming 2 1 Department of Geophysics, Peking University, Beijing 100871, China 2 Chinese Academy of Space Technology, Beijing 100086, China Abstract The observation of the particle detector inside ZY21 (CBERS21) satellite is compared with the radiation belt models (AE8ΠAP8). It is found that the measurement in SAA (Southern Atlantic Anomaly) is in accord with the predictions by the models, while the measured electron flux is much lower than the prediction by the AE8 model in the regions of southern and northern aurora belts. According to the observation of NOAA2 POES satellite, this difference is considered to be caused by the difference of the particle pitch angle distributions in SAA and the regions of the aurora belts. The particle s flux in SAA is inclined to be isotropic, while in the regions of the aurora belts it is obviously anisotropic where the particles distributed near 90 pitch angle are much larger than that distributed near 0 pitch angle. Keywords Particle detector inside ZY21, Radiation belt model, Pitch angle distribution, SAA, Auroral belt (40425004) (XK100010404),,1975,,2003, E2mail :derakzou @yahoo. com. cn
3 : 679 1 (CBERS21) 1999 10 14,, 015 210 MeV > 210 MeV 5 30 MeV 30 60 MeV [1,2 ]., 780 km, 9815, 10013 min.,,, 780 km, [3 ]., [4 ]. 2 X [5,6 ]., 1958 Van Allen et al. [7 ], [8 11 ],, NASA AP8ΠAE8 [12,13 ], AP8ΠAE8 (011 400 MeV) (0104 7 MeV). NOAA,, 850 km. MEPED, 30 kev 275 MeV NOAA AE8ΠAP8, 2, (015 210 MeV) (5 30 MeV) AE8ΠAP8, : (1) (, ),, AE8ΠAP8, 2 mm,, 015 210 MeV 1149 2196 MeV, 5 30 MeV 1815 3615 MeV (2) [14 ], j = NΠG, (1) j, N G, AE8Π AP8,, J J = j ( ) d, (2) 4, (2) J = 4 j = 4 NΠG. (3), 015 210 MeV 2129 cm 2 sr,5 30 MeV 2155 cm 2 sr., 015 210 MeV 5 30 MeV J e = 4 N e Π2. 29 = 5. 49 N e, J p = 4 N p Π2. 55 = 4. 93 N p. (3) (4) Lemaire et al. [15 ] Heynderickx et al. [16 ], AP8 AE8 30,,,, Jensen & Cain (1962) GSFC 12Π66 211 015 210 MeV AE8 1999 12 ( )
680 (Chinese J. Geophys. ) 50 015 210 MeV,, ( :3 ) 015 210 MeV, 1a, AE8 1999 12 1149 2196 MeV, 3, 1b, 015 210 MeV, AE8., AE8,, 4133 (2116 10 4 cm - 2 s - 1 ), AE8 4144 (2175 10 4 cm - 2 s - 1 )., AE8 3173 (5134 10 3 cm - 2 s - 1 ), AE8 4169 (4190 10 4 cm - 2 s - 1 ). 3122 (1165 10 3 cm - 2 s - 1 ), AE8 4143 (2169 10 4 cm - 2 s - 1 )., AE8 20 % 2 mm,, AE8 212 5 30 MeV AP8, 1999 12 5 30 MeV AP8 1999 12 (1815 3615 MeV), 2 AP8. 2196 (9112 10 2 cm - 2 s - 1 ), AP8 2198 (9155 10 2 cm - 2 s - 1 )., AP8, AE8 AP8, AE8 3 NOAA, NOAA NOAA MEPED (Medium Energy Proton and Electron Detector, ), 30, > 30 kev > 100 kev > 300 kev 30 80 kev 80 240 kev 240 800 kev 800 2500 kev 2500 6900 kev > 6900 kev,, 0 ; 0,,, 90. 120,, > 16 MeV > 35 MeV > 70 MeV > 140 MeV 311 NOAA, NOAA215 ( : 30 W 90 W ; :40 S 0 ) 90, 1 ( :,, 0 90, 90 0 ).,, 90 0,
3 : 681 1 1999 12 015 210 MeV (a) AE8 (b) Fig. 1 Comparison between the ZY21 015 210 MeV electron measurement (a) and the AE8 prediction (b) in Dec., 1999 2 1999 12 5 30 MeV (a) AP8 (b) Fig. 2 Comparison between the ZY21 5 30 MeV proton measurement (a) and the AP8 prediction (b) in Dec., 1999 3 1999 12 NOAA215 MEPED 16 35 MeV (a) AP8 (b) Fig. 3 Comparison between the NOAA215 MEPED 16 35 MeV proton measurement (a) and the AP8 prediction (b) in Dec., 1999 4 1999 12 NOAA215MEPED 0 (a) 90 (b) > 300 kev Fig. 4 Comparison of the > 300 kev electron measurements by the MEPED 0 detector (a) and 90 detector (b) onboard NOAA215 satellite in the regions of aurora belts in Dec., 1999
682 (Chinese J. Geophys. ) 50 1 NOAA215 MEPED 90 Table 1 Comparison of the particle s differential flux measured in SAA by the MEPED 0 detector and 90 detector onboard NOAA215 satellite 90 (cm - 2 s - 1 sr - 1 ) 0 (cm - 2 s - 1 sr - 1 ) 90 Π0 > 30 kev 616440 10 5 917657 10 4 618 > 100 kev 512544 10 5 713857 10 4 711 > 300 kev 110422 10 5 313359 10 4 311 30 80 kev 80 240 kev 240 800 kev 800 2500 kev 2500 6900 kev 518449 10 3 316418 10 3 116 117214 10 4 816296 10 3 210 115173 10 4 117481 10 4 019 410433 10 3 617915 10 3 016 019466 10 3 116207 10 3 016 > 6900 kev 210727 10 4 219085 10 4 017 312 NOAA AP8, NOAA MEPED 16 35 MeV AP8, 3,NOAA215 MEPED 16 35 MeV 3115 (1141 10 3 cm - 2 s - 1 ), AP8 3112 (1132 10 3 cm - 2 s - 1 ). NOAA,,, NOAA MEPED 16 35 MeV AP8 4 NOAA MEPED,, AE8 AP8 NOAA 0 90,,,, [17 ].. NOAA 0 90,,,, AE8, 120,, (0 60 ).,,, 90,, 1000 km, 90 4 NOAA 0 90 > 300 kev 4, 0 90 800 km, 90 5 NOAA AE8ΠAP8, 780 850 km,, 90 0
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