Database: Ace Shock Analysis
Event ID: 20042082227
Observation time: 07/26/2004 208.93592 2227 [UT]
|
|
General
Information (About, Top)
| Year |
2004 |
| Fractional day of year |
208.935919 |
| Arrival time of shock [seconds of day] |
80863.4 ± 160.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
231.420 |
| Y GSE location of spacecraft [Re] |
-38.259 |
| Z GSE location of spacecraft [Re] |
21.816 |
| Upstream plasma points selected for analysis |
0007 |
| Upstream field points selected for analysis |
0478 |
| Downstream plasma points selected for analysis |
0009
|
| Downstream field points selected for analysis |
0858 |
| Minimum chisq/dof for RH8,RH9,RH10 |
14.22, 18.40, 20.90 |
Event added to database
|
Wed Oct 15 10:41:50 2014
|
Event last processed
|
Wed Oct 15 11:32:43 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
166.120 ± 47.143
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-602.1 ± 7.1 |
-893.6 ± 19.3 |
| Vy GSE [km/s] |
46.7 ± 7.9 |
-33.9 ± 22.5 |
| Vz GSE [km/s] |
39.7 ± 10.2 |
73.1 ± 33.4 |
| Wi [km/s] |
44.8 ± 2.6 |
109.6 ± 5.9 |
| We [km/s] |
1418.1 ± 82.1 |
3465.9 ± 187.9 |
| Ni [n/cc] |
2.1 ± 0.5 |
4.9 ± 0.6 |
| Bx GSE [nT] |
1.2 ± 0.5 |
4.0 ± 5.3 |
| By GSE [nT] |
3.4 ± 0.2 |
-8.9 ± 3.1 |
| Bz GSE [nT] |
-0.6 ± 0.6 |
-13.4 ± 3.9 |
Plasma Beta
|
0.649 ± 0.625
|
0.387 ± 0.379
|
Sound Speed [km/s]
|
57.90 ± 3.35
|
141.49 ± 7.67
|
Alfven Speed [km/s]
|
58.12 ± 10.51
|
177.53 ± 14.80
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.438 ± 0.182 |
-0.734 ± 0.137 |
0.519 ± 0.467 |
31.28 ± 11.44 |
239.18 ± 13.61 |
| VC |
-0.959 ± 0.023 |
-0.264 ± 0.072 |
0.107 ± 0.107 |
6.15 ± 6.36 |
195.40 ± 4.29 |
| MX1 |
-0.958 ± 0.132 |
-0.274 ± 0.460 |
0.086 ± 0.086 |
4.96 ± 8.84 |
195.94 ± 27.51 |
| MX2 |
-0.948 ± 0.063 |
-0.298 ± 0.189 |
0.110 ± 0.109 |
6.29 ± 11.36 |
197.44 ± 11.39 |
| MX3 |
-0.949 ± 0.066 |
-0.296 ± 0.202 |
0.110 ± 0.110 |
6.34 ± 10.45 |
197.34 ± 12.21 |
| RH08 |
-0.200 ± 0.010 |
0.730 ± 0.008 |
-0.654 ± 0.539 |
-40.82 ± 0.69 |
105.29 ± 0.76 |
| RH09 |
-0.187 ± 0.069 |
0.733 ± 0.047 |
-0.654 ± 0.539 |
-40.82 ± 3.92 |
104.29 ± 5.36 |
| RH10 |
-0.200 ± 0.069 |
0.730 ± 0.047 |
-0.654 ± 0.539 |
-40.82 ± 3.92 |
105.29 ± 5.36 |
| Average |
-0.605 |
0.041 |
-0.129 |
-8.428 |
167.522 |
| Median |
-0.438 |
-0.264 |
0.107 |
6.149 |
195.943 |
| Deviation |
0.381 |
0.592 |
0.457 |
28.159 |
53.781 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
25.5 ± 8.9 |
601.0 ± 12.9 |
2.62 ± 0.71 |
| VC |
55.7 ± 7.5 |
1096.2 ± 17.8 |
2.62 ± 0.71 |
| MX1 |
55.3 ± 7.5 |
1094.0 ± 17.8 |
2.62 ± 0.71 |
| MX2 |
53.7 ± 7.5 |
1088.5 ± 17.8 |
2.62 ± 0.71 |
| MX3 |
53.8 ± 7.5 |
1088.9 ± 17.8 |
2.62 ± 0.71 |
| RH08 |
44.0 ± 8.6 |
76.6 ± 7.8 |
2.62 ± 0.71 |
| RH09 |
43.4 ± 8.6 |
61.7 ± 7.8 |
2.62 ± 0.71 |
| RH10 |
44.0 ± 8.6 |
76.6 ± 61.1 |
2.62 ± 0.71 |
| Average |
46.9 |
647.9 |
2.62 |
| Median |
53.7 |
1088.5 |
2.62 |
| Deviation |
10.2 |
505.3 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
351.1 ± 8.6 |
43.0 ± 4.4 |
52.5 ± 9.5 |
70.2 ± 6.9 |
8.23 ± 0.66 |
5.03 ± 0.39 |
| VC |
527.2 ± 5.7 |
23.9 ± 2.4 |
32.7 ± 5.9 |
78.8 ± 7.7 |
22.26 ± 2.15 |
6.74 ± 0.63 |
| MX1 |
526.6 ± 5.8 |
24.1 ± 2.4 |
33.0 ± 6.0 |
78.7 ± 7.7 |
22.01 ± 2.13 |
6.74 ± 0.63 |
| MX2 |
527.1 ± 5.6 |
25.2 ± 2.5 |
34.4 ± 6.2 |
78.4 ± 7.6 |
21.07 ± 2.03 |
6.78 ± 0.63 |
| MX3 |
527.2 ± 5.6 |
25.2 ± 2.5 |
34.3 ± 6.2 |
78.4 ± 7.6 |
21.13 ± 2.03 |
6.78 ± 0.63 |
| RH8 |
-51.7 ± 11.9 |
31.6 ± 3.2 |
41.8 ± 7.6 |
76.0 ± 7.4 |
-1.62 ± 0.29 |
-0.68 ± 0.12 |
| RH9 |
-59.0 ± 11.8 |
32.0 ± 3.2 |
42.2 ± 7.6 |
75.9 ± 7.4 |
-1.84 ± 0.27 |
-0.78 ± 0.12 |
| RH10 |
-51.7 ± 11.9 |
31.6 ± 3.2 |
41.8 ± 7.6 |
76.0 ± 7.4 |
-1.62 ± 0.29 |
-0.68 ± 0.12 |
| Average |
287.1 |
29.6 |
39.1 |
76.5 |
11.2 |
3.7 |
| Median |
526.6 |
31.6 |
41.8 |
78.4 |
21.1 |
6.7 |
| Deviation |
288.8 |
6.5 |
6.8 |
2.9 |
11.6 |
3.7 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
146.9 ± 34.3 |
116.0 ± 5.8 |
160.3 ± 13.4 |
195.3 ± 13.2 |
1.27 ± 0.30 |
0.75 ± 0.18 |
| VC |
222.9 ± 21.8 |
64.9 ± 3.4 |
100.0 ± 8.3 |
217.7 ± 13.6 |
3.45 ± 0.43 |
1.03 ± 0.13 |
| MX1 |
222.4 ± 21.7 |
65.6 ± 3.4 |
100.9 ± 8.4 |
217.5 ± 13.6 |
3.41 ± 0.43 |
1.03 ± 0.13 |
| MX2 |
223.0 ± 22.2 |
68.5 ± 3.5 |
105.0 ± 8.8 |
216.6 ± 13.6 |
3.27 ± 0.41 |
1.03 ± 0.14 |
| MX3 |
223.0 ± 22.2 |
68.4 ± 3.5 |
104.8 ± 8.7 |
216.7 ± 13.6 |
3.28 ± 0.41 |
1.03 ± 0.14 |
| RH8 |
-29.2 ± 36.2 |
85.8 ± 4.4 |
127.7 ± 10.6 |
210.4 ± 13.4 |
-0.34 ± 0.42 |
-0.14 ± 0.17 |
| RH9 |
-32.6 ± 36.2 |
86.8 ± 4.4 |
129.0 ± 10.8 |
209.9 ± 13.4 |
-0.37 ± 0.42 |
-0.15 ± 0.17 |
| RH10 |
-29.2 ± 36.2 |
85.8 ± 4.4 |
127.7 ± 10.6 |
210.4 ± 13.4 |
-0.34 ± 0.42 |
-0.14 ± 0.17 |
| Average |
118.4 |
80.2 |
119.4 |
211.8 |
1.7 |
0.6 |
| Median |
222.4 |
85.8 |
127.7 |
216.6 |
3.3 |
1.0 |
| Deviation |
125.8 |
17.4 |
20.8 |
7.5 |
1.8 |
0.6 |
Survey interval (About, Top)
Selected
data (About, Top)
|
Key plasma parameters
|
Velocity
|
Magnetic Field
|
Simple
Methods
(About, Top)
Rankine Chi^2
Contour (About, Top)
Shock
Speed (About, Top)
Theta Bn (About, Top)
Mach Numbers (About, Top)
Page updated Mon Apr 13 08:55:21 2009
Michael L Stevens
(mstevens@cfa.harvard.edu)
| 
