Database: Ace Shock Analysis
Event ID: 20022000932
Observation time: 07/19/2002 200.39748 0932 [UT]
|
|
General
Information (About, Top)
| Year |
2002 |
| Fractional day of year |
200.397477 |
| Arrival time of shock [seconds of day] |
34342.0 ± 22.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.039 |
| Y GSE location of spacecraft [Re] |
-0.004 |
| Z GSE location of spacecraft [Re] |
0.004 |
| Upstream plasma points selected for analysis |
0010 |
| Upstream field points selected for analysis |
0037 |
| Downstream plasma points selected for analysis |
0007
|
| Downstream field points selected for analysis |
0027 |
| Minimum chisq/dof for RH8,RH9,RH10 |
14.70, 23.46, 24.73 |
Event added to database
|
Sun May 1 22:28:34 2005
|
Event last processed
|
Tue May 3 14:28:30 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.006 ± 0.001
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-437.4 ± 7.1 |
-552.4 ± 8.5 |
| Vy GSE [km/s] |
73.3 ± 3.4 |
-2.9 ± 13.3 |
| Vz GSE [km/s] |
26.8 ± 10.6 |
-63.3 ± 9.0 |
| Wi [km/s] |
42.2 ± 2.6 |
72.8 ± 4.9 |
| We [km/s] |
1334.9 ± 83.1 |
2303.3 ± 156.1 |
| Ni [n/cc] |
1.6 ± 0.2 |
4.4 ± 0.6 |
| Bx GSE [nT] |
-0.6 ± 1.0 |
1.7 ± 0.9 |
| By GSE [nT] |
-5.0 ± 0.2 |
-10.9 ± 0.5 |
| Bz GSE [nT] |
-0.8 ± 0.6 |
1.9 ± 1.2 |
Plasma Beta
|
0.220 ± 0.219
|
0.384 ± 0.393
|
Sound Speed [km/s]
|
54.50 ± 3.39
|
94.03 ± 6.37
|
Alfven Speed [km/s]
|
90.24 ± 3.99
|
117.88 ± 3.89
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.673 ± 0.402 |
-0.560 ± 0.450 |
-0.483 ± 0.442 |
-28.90 ± 31.53 |
219.76 ± 35.43 |
| VC |
-0.700 ± 0.056 |
-0.463 ± 0.071 |
-0.544 ± 0.483 |
-32.94 ± 4.32 |
213.46 ± 5.48 |
| MX1 |
-0.687 ± 0.085 |
-0.500 ± 0.111 |
-0.526 ± 0.471 |
-31.77 ± 4.15 |
216.05 ± 9.07 |
| MX2 |
-0.684 ± 0.079 |
-0.500 ± 0.100 |
-0.531 ± 0.474 |
-32.05 ± 4.77 |
216.19 ± 8.10 |
| MX3 |
-0.681 ± 0.078 |
-0.501 ± 0.095 |
-0.534 ± 0.476 |
-32.29 ± 5.34 |
216.38 ± 7.60 |
| RH08 |
-0.806 ± 0.008 |
-0.439 ± 0.012 |
-0.397 ± 0.374 |
-23.37 ± 0.76 |
208.58 ± 0.82 |
| RH09 |
-0.965 ± 0.018 |
-0.145 ± 0.070 |
-0.218 ± 0.214 |
-12.58 ± 3.96 |
188.52 ± 4.17 |
| RH10 |
-0.974 ± 0.016 |
-0.129 ± 0.070 |
-0.184 ± 0.182 |
-10.62 ± 4.00 |
187.52 ± 4.11 |
| Average |
-0.771 |
-0.405 |
-0.427 |
-25.566 |
208.308 |
| Median |
-0.687 |
-0.463 |
-0.483 |
-28.902 |
216.048 |
| Deviation |
0.130 |
0.169 |
0.148 |
9.164 |
12.920 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
45.1 ± 11.8 |
502.9 ± 30.5 |
2.85 ± 0.66 |
| VC |
51.4 ± 11.7 |
521.8 ± 30.4 |
2.85 ± 0.66 |
| MX1 |
49.0 ± 11.7 |
514.4 ± 30.5 |
2.85 ± 0.66 |
| MX2 |
49.0 ± 11.7 |
512.8 ± 30.5 |
2.85 ± 0.66 |
| MX3 |
48.9 ± 11.7 |
511.0 ± 30.6 |
2.85 ± 0.66 |
| RH08 |
53.8 ± 11.9 |
570.3 ± 28.9 |
2.85 ± 0.66 |
| RH09 |
73.0 ± 11.7 |
631.9 ± 24.6 |
2.85 ± 0.66 |
| RH10 |
74.2 ± 11.7 |
633.4 ± 24.1 |
2.85 ± 0.66 |
| Average |
55.6 |
549.8 |
2.85 |
| Median |
51.4 |
521.8 |
2.85 |
| Deviation |
11.4 |
55.1 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
262.6 ± 7.7 |
34.8 ± 1.8 |
63.6 ± 2.8 |
99.5 ± 3.9 |
7.56 ± 0.52 |
2.64 ± 0.14 |
| VC |
264.1 ± 8.5 |
30.3 ± 1.6 |
56.3 ± 2.5 |
101.0 ± 3.9 |
8.74 ± 0.61 |
2.62 ± 0.15 |
| MX1 |
264.5 ± 8.2 |
32.1 ± 1.7 |
59.2 ± 2.6 |
100.5 ± 3.9 |
8.27 ± 0.58 |
2.64 ± 0.15 |
| MX2 |
264.5 ± 8.3 |
32.1 ± 1.7 |
59.2 ± 2.6 |
100.5 ± 3.9 |
8.26 ± 0.58 |
2.64 ± 0.15 |
| MX3 |
264.4 ± 8.3 |
32.2 ± 1.7 |
59.3 ± 2.6 |
100.4 ± 3.9 |
8.25 ± 0.58 |
2.64 ± 0.15 |
| RH8 |
260.6 ± 7.8 |
28.6 ± 1.5 |
53.2 ± 2.4 |
101.5 ± 3.9 |
9.15 ± 0.63 |
2.57 ± 0.14 |
| RH9 |
226.2 ± 7.9 |
13.8 ± 0.7 |
26.4 ± 1.2 |
104.6 ± 4.0 |
16.47 ± 1.19 |
2.17 ± 0.13 |
| RH10 |
221.6 ± 7.7 |
12.8 ± 0.6 |
24.6 ± 1.1 |
104.7 ± 4.0 |
17.34 ± 1.25 |
2.12 ± 0.12 |
| Average |
253.6 |
27.1 |
50.2 |
101.6 |
10.5 |
2.5 |
| Median |
264.1 |
32.1 |
59.2 |
101.0 |
8.7 |
2.6 |
| Deviation |
18.4 |
8.7 |
15.5 |
2.0 |
4.0 |
0.2 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
98.9 ± 8.4 |
55.7 ± 2.7 |
83.1 ± 2.7 |
140.2 ± 4.8 |
1.78 ± 0.16 |
0.71 ± 0.07 |
| VC |
99.3 ± 7.3 |
48.3 ± 2.3 |
73.5 ± 2.4 |
142.9 ± 4.9 |
2.06 ± 0.18 |
0.70 ± 0.06 |
| MX1 |
99.8 ± 7.7 |
51.2 ± 2.5 |
77.3 ± 2.6 |
141.9 ± 4.9 |
1.95 ± 0.17 |
0.70 ± 0.07 |
| MX2 |
99.8 ± 7.7 |
51.2 ± 2.5 |
77.3 ± 2.6 |
141.9 ± 4.9 |
1.95 ± 0.17 |
0.70 ± 0.07 |
| MX3 |
99.7 ± 7.7 |
51.3 ± 2.5 |
77.5 ± 2.6 |
141.9 ± 4.9 |
1.95 ± 0.17 |
0.70 ± 0.07 |
| RH8 |
98.6 ± 7.2 |
45.4 ± 2.2 |
69.5 ± 2.3 |
143.9 ± 5.0 |
2.18 ± 0.19 |
0.69 ± 0.06 |
| RH9 |
84.4 ± 6.7 |
21.7 ± 1.0 |
34.5 ± 1.1 |
149.3 ± 5.3 |
3.90 ± 0.40 |
0.57 ± 0.06 |
| RH10 |
83.1 ± 6.9 |
20.2 ± 1.0 |
32.2 ± 1.1 |
149.5 ± 5.3 |
4.12 ± 0.44 |
0.56 ± 0.06 |
| Average |
95.5 |
43.1 |
65.6 |
143.9 |
2.5 |
0.7 |
| Median |
99.3 |
51.2 |
77.3 |
142.9 |
2.1 |
0.7 |
| Deviation |
7.2 |
14.0 |
20.3 |
3.5 |
0.9 |
0.1 |
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)
| 
