Database: Ace Shock Analysis
Event ID: 19990690040
Observation time: 03/10/1999 69.02795 0040 [UT]
|
|
General
Information (About, Top)
| Year |
1999 |
| Fractional day of year |
69.027951 |
| Arrival time of shock [seconds of day] |
2415.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.038 |
| Y GSE location of spacecraft [Re] |
-0.004 |
| Z GSE location of spacecraft [Re] |
0.003 |
| Upstream plasma points selected for analysis |
0011 |
| Upstream field points selected for analysis |
0045 |
| Downstream plasma points selected for analysis |
0010
|
| Downstream field points selected for analysis |
0044 |
| Minimum chisq/dof for RH8,RH9,RH10 |
8.99, 12.23, 12.52 |
Event added to database
|
Sat Apr 30 21:43:52 2005
|
Event last processed
|
Wed Oct 15 14:55:43 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.007 ± 0.000
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-411.2 ± 2.1 |
-459.2 ± 3.4 |
| Vy GSE [km/s] |
-7.8 ± 2.3 |
-1.7 ± 4.5 |
| Vz GSE [km/s] |
-23.6 ± 2.3 |
-2.2 ± 5.8 |
| Wi [km/s] |
31.3 ± 0.7 |
37.6 ± 2.4 |
| We [km/s] |
989.3 ± 21.4 |
1189.2 ± 76.4 |
| Ni [n/cc] |
10.3 ± 0.4 |
15.9 ± 1.4 |
| Bx GSE [nT] |
-0.6 ± 0.6 |
-2.3 ± 1.5 |
| By GSE [nT] |
-3.0 ± 0.4 |
-7.3 ± 2.1 |
| Bz GSE [nT] |
-3.7 ± 0.3 |
-2.6 ± 2.4 |
Plasma Beta
|
0.959 ± 0.947
|
0.641 ± 0.593
|
Sound Speed [km/s]
|
40.35 ± 0.86
|
48.53 ± 3.13
|
Alfven Speed [km/s]
|
32.00 ± 1.04
|
47.34 ± 3.77
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.943 ± 0.349 |
0.261 ± 1.018 |
0.207 ± 0.204 |
11.93 ± 59.45 |
164.56 ± 61.75 |
| VC |
-0.910 ± 0.048 |
0.109 ± 0.089 |
0.399 ± 0.376 |
23.51 ± 6.79 |
173.20 ± 5.57 |
| MX1 |
-0.783 ± 0.332 |
0.360 ± 0.517 |
0.507 ± 0.458 |
30.44 ± 29.57 |
155.30 ± 36.97 |
| MX2 |
-0.754 ± 0.160 |
0.389 ± 0.243 |
0.530 ± 0.474 |
31.99 ± 12.47 |
152.73 ± 18.05 |
| MX3 |
-0.796 ± 0.159 |
0.359 ± 0.248 |
0.488 ± 0.445 |
29.21 ± 14.84 |
155.73 ± 17.44 |
| RH08 |
-0.993 ± 0.001 |
-0.009 ± 0.009 |
0.117 ± 0.117 |
6.74 ± 0.68 |
180.50 ± 0.52 |
| RH09 |
0.054 ± 0.048 |
0.456 ± 0.061 |
0.888 ± 0.502 |
62.66 ± 3.94 |
83.23 ± 5.98 |
| RH10 |
-0.315 ± 0.067 |
-0.413 ± 0.064 |
-0.855 ± 0.532 |
-58.73 ± 4.00 |
232.65 ± 7.79 |
| Average |
-0.680 |
0.189 |
0.285 |
17.220 |
162.235 |
| Median |
-0.783 |
0.359 |
0.488 |
29.209 |
164.556 |
| Deviation |
0.363 |
0.288 |
0.516 |
34.944 |
41.126 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
78.9 ± 7.4 |
539.0 ± 3.1 |
1.52 ± 0.14 |
| VC |
75.4 ± 6.9 |
522.8 ± 3.4 |
1.52 ± 0.14 |
| MX1 |
59.5 ± 7.2 |
460.5 ± 3.2 |
1.52 ± 0.14 |
| MX2 |
56.9 ± 7.3 |
445.8 ± 3.1 |
1.52 ± 0.14 |
| MX3 |
60.7 ± 7.3 |
466.3 ± 3.2 |
1.52 ± 0.14 |
| RH08 |
87.3 ± 7.1 |
558.5 ± 3.1 |
1.52 ± 0.14 |
| RH09 |
14.5 ± 4.1 |
11.1 ± 1.6 |
1.52 ± 0.14 |
| RH10 |
17.0 ± 7.9 |
134.8 ± 11.6 |
1.52 ± 0.14 |
| Average |
56.3 |
392.3 |
1.52 |
| Median |
60.7 |
466.3 |
1.52 |
| Deviation |
27.1 |
203.8 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
158.2 ± 2.1 |
4.9 ± 0.1 |
6.2 ± 0.2 |
51.3 ± 0.5 |
32.61 ± 0.40 |
3.08 ± 0.03 |
| VC |
158.8 ± 1.8 |
6.4 ± 0.1 |
8.1 ± 0.3 |
51.1 ± 0.5 |
24.87 ± 0.38 |
3.11 ± 0.03 |
| MX1 |
153.3 ± 1.7 |
13.1 ± 0.2 |
16.2 ± 0.5 |
49.8 ± 0.5 |
11.67 ± 0.17 |
3.08 ± 0.03 |
| MX2 |
151.5 ± 1.7 |
14.2 ± 0.2 |
17.5 ± 0.6 |
49.5 ± 0.5 |
10.64 ± 0.16 |
3.06 ± 0.03 |
| MX3 |
153.5 ± 1.7 |
12.7 ± 0.2 |
15.7 ± 0.5 |
49.9 ± 0.5 |
12.12 ± 0.17 |
3.07 ± 0.03 |
| RH8 |
152.9 ± 2.0 |
1.2 ± 0.0 |
1.5 ± 0.0 |
51.5 ± 0.5 |
128.45 ± 1.77 |
2.97 ± 0.03 |
| RH9 |
58.1 ± 1.2 |
29.7 ± 0.7 |
31.0 ± 1.0 |
42.1 ± 0.6 |
1.96 ± 0.08 |
1.38 ± 0.03 |
| RH10 |
-18.2 ± 1.5 |
29.0 ± 0.7 |
30.6 ± 1.0 |
42.6 ± 0.6 |
-0.63 ± 0.06 |
-0.43 ± 0.03 |
| Average |
121.0 |
13.9 |
15.8 |
48.5 |
27.7 |
2.4 |
| Median |
153.3 |
13.1 |
16.2 |
49.9 |
12.1 |
3.1 |
| Deviation |
65.7 |
10.6 |
10.7 |
3.9 |
42.2 |
1.3 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
107.0 ± 3.7 |
6.5 ± 0.4 |
9.1 ± 0.7 |
67.5 ± 3.9 |
16.39 ± 1.23 |
1.59 ± 0.11 |
| VC |
105.9 ± 3.5 |
8.6 ± 0.5 |
12.0 ± 1.0 |
67.3 ± 3.9 |
12.34 ± 0.98 |
1.58 ± 0.12 |
| MX1 |
102.8 ± 3.7 |
17.8 ± 1.1 |
24.0 ± 1.9 |
65.5 ± 3.8 |
5.81 ± 0.46 |
1.57 ± 0.12 |
| MX2 |
101.7 ± 3.7 |
19.3 ± 1.2 |
25.9 ± 2.1 |
65.1 ± 3.8 |
5.30 ± 0.42 |
1.57 ± 0.12 |
| MX3 |
102.8 ± 3.7 |
17.1 ± 1.0 |
23.2 ± 1.8 |
65.7 ± 3.8 |
6.03 ± 0.47 |
1.57 ± 0.11 |
| RH8 |
102.7 ± 3.2 |
1.6 ± 0.1 |
2.2 ± 0.2 |
67.8 ± 3.9 |
64.21 ± 4.86 |
1.52 ± 0.11 |
| RH9 |
39.1 ± 3.7 |
41.2 ± 2.6 |
45.8 ± 3.6 |
53.9 ± 3.0 |
0.96 ± 0.13 |
0.73 ± 0.09 |
| RH10 |
-12.8 ± 3.7 |
40.1 ± 2.5 |
45.3 ± 3.6 |
54.8 ± 3.1 |
-0.32 ± 0.10 |
-0.24 ± 0.07 |
| Average |
81.2 |
19.0 |
23.4 |
63.4 |
13.8 |
1.2 |
| Median |
102.8 |
17.8 |
24.0 |
65.7 |
6.0 |
1.6 |
| Deviation |
44.2 |
14.7 |
15.9 |
5.7 |
21.1 |
0.7 |
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)
| 
