Database: Ace Shock Analysis
Event ID: 20072041950
Observation time: 07/23/2007 204.82676 1950 [UT]
|
|
General
Information (About, Top)
| Year |
2007 |
| Fractional day of year |
204.826763 |
| Arrival time of shock [seconds of day] |
71432.3 ± 120.0 |
| Shock type |
NN |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
224.915 |
| Y GSE location of spacecraft [Re] |
8.220 |
| Z GSE location of spacecraft [Re] |
20.854 |
| Upstream plasma points selected for analysis |
0011 |
| Upstream field points selected for analysis |
0746 |
| Downstream plasma points selected for analysis |
0011
|
| Downstream field points selected for analysis |
0718 |
| Minimum chisq/dof for RH8,RH9,RH10 |
5.13, 8.74, 9.78 |
Event added to database
|
Tue Oct 14 15:37:47 2014
|
Event last processed
|
Wed Oct 15 12:37:58 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
76.883 ± 18.471
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-370.4 ± 6.4 |
-386.6 ± 0.6 |
| Vy GSE [km/s] |
-1.3 ± 6.8 |
15.0 ± 0.9 |
| Vz GSE [km/s] |
-39.5 ± 4.1 |
-15.1 ± 3.7 |
| Wi [km/s] |
26.0 ± 2.2 |
17.1 ± 0.8 |
| We [km/s] |
821.0 ± 68.7 |
540.9 ± 24.9 |
| Ni [n/cc] |
4.1 ± 0.3 |
7.0 ± 0.4 |
| Bx GSE [nT] |
1.5 ± 1.0 |
0.4 ± 0.1 |
| By GSE [nT] |
-1.2 ± 0.8 |
0.1 ± 0.1 |
| Bz GSE [nT] |
-2.1 ± 0.4 |
-0.8 ± 0.1 |
Plasma Beta
|
0.581 ± 0.596
|
4.598 ± 4.744
|
Sound Speed [km/s]
|
33.52 ± 2.80
|
22.08 ± 1.02
|
Alfven Speed [km/s]
|
34.25 ± 2.86
|
8.00 ± 0.36
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.968 ± 0.233 |
-0.250 ± 0.900 |
0.025 ± 0.025 |
1.45 ± 50.44 |
194.48 ± 53.27 |
| VC |
-0.506 ± 0.198 |
0.509 ± 0.197 |
0.697 ± 0.553 |
44.17 ± 7.09 |
134.82 ± 21.18 |
| MX1 |
-0.982 ± 0.138 |
-0.111 ± 0.901 |
-0.154 ± 0.152 |
-8.83 ± 35.38 |
186.43 ± 52.55 |
| MX2 |
-0.960 ± 0.286 |
-0.240 ± 1.049 |
0.145 ± 0.144 |
8.33 ± 46.40 |
194.02 ± 62.60 |
| MX3 |
-0.970 ± 0.199 |
-0.239 ± 0.797 |
-0.044 ± 0.044 |
-2.55 ± 42.04 |
193.85 ± 47.07 |
| RH08 |
-0.244 ± 0.018 |
0.595 ± 0.009 |
-0.765 ± 0.561 |
-49.94 ± 0.51 |
112.31 ± 1.67 |
| RH09 |
-0.286 ± 0.066 |
0.605 ± 0.055 |
-0.743 ± 0.561 |
-47.99 ± 3.96 |
115.32 ± 5.94 |
| RH10 |
-0.328 ± 0.065 |
0.583 ± 0.056 |
-0.743 ± 0.561 |
-47.99 ± 3.96 |
119.33 ± 5.94 |
| Average |
-0.655 |
0.182 |
-0.198 |
-12.917 |
156.321 |
| Median |
-0.506 |
0.509 |
-0.044 |
-2.546 |
186.425 |
| Deviation |
0.345 |
0.422 |
0.522 |
33.535 |
38.988 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
66.2 ± 23.5 |
386.6 ± 1.0 |
1.74 ± 0.20 |
| VC |
22.2 ± 10.7 |
237.9 ± 1.0 |
1.74 ± 0.20 |
| MX1 |
70.3 ± 21.6 |
395.1 ± 0.9 |
1.74 ± 0.20 |
| MX2 |
60.5 ± 23.8 |
385.6 ± 1.0 |
1.74 ± 0.20 |
| MX3 |
69.0 ± 23.1 |
386.7 ± 1.0 |
1.74 ± 0.20 |
| RH08 |
81.0 ± 8.5 |
108.0 ± 0.8 |
1.74 ± 0.20 |
| RH09 |
83.3 ± 8.5 |
125.9 ± 0.8 |
1.74 ± 0.20 |
| RH10 |
83.9 ± 8.6 |
142.2 ± 8.2 |
1.74 ± 0.20 |
| Average |
67.1 |
271.0 |
1.74 |
| Median |
70.3 |
385.6 |
1.74 |
| Deviation |
20.0 |
131.2 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
28.7 ± 7.7 |
9.9 ± 0.7 |
13.8 ± 1.2 |
46.9 ± 3.4 |
2.88 ± 0.62 |
0.61 ± 0.13 |
| VC |
78.8 ± 2.7 |
26.6 ± 2.0 |
31.7 ± 2.7 |
39.9 ± 2.9 |
2.98 ± 0.26 |
1.98 ± 0.17 |
| MX1 |
25.2 ± 7.2 |
8.2 ± 0.6 |
11.6 ± 1.0 |
47.3 ± 3.5 |
3.04 ± 0.71 |
0.53 ± 0.12 |
| MX2 |
35.4 ± 7.5 |
12.2 ± 0.9 |
16.9 ± 1.4 |
46.4 ± 3.4 |
2.90 ± 0.45 |
0.76 ± 0.12 |
| MX3 |
25.3 ± 7.8 |
8.7 ± 0.6 |
12.3 ± 1.0 |
47.2 ± 3.5 |
2.87 ± 0.72 |
0.53 ± 0.13 |
| RH8 |
-12.0 ± 3.8 |
3.7 ± 0.3 |
5.3 ± 0.4 |
47.8 ± 3.5 |
-3.20 ± 0.99 |
-0.25 ± 0.08 |
| RH9 |
-8.6 ± 3.7 |
2.8 ± 0.2 |
4.0 ± 0.3 |
47.9 ± 3.5 |
-3.07 ± 1.31 |
-0.18 ± 0.08 |
| RH10 |
-7.8 ± 3.6 |
2.5 ± 0.2 |
3.6 ± 0.3 |
47.9 ± 3.5 |
-3.04 ± 1.43 |
-0.16 ± 0.08 |
| Average |
20.6 |
9.3 |
12.4 |
46.4 |
0.7 |
0.5 |
| Median |
25.3 |
8.7 |
12.3 |
47.3 |
2.9 |
0.5 |
| Deviation |
30.3 |
7.8 |
9.2 |
2.7 |
3.1 |
0.7 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
16.5 ± 0.7 |
3.1 ± 0.1 |
3.2 ± 0.1 |
23.3 ± 1.0 |
5.38 ± 0.30 |
0.71 ± 0.04 |
| VC |
45.3 ± 2.4 |
7.3 ± 0.3 |
7.4 ± 0.3 |
22.3 ± 1.0 |
6.19 ± 0.38 |
2.03 ± 0.14 |
| MX1 |
14.8 ± 0.7 |
2.6 ± 0.1 |
2.7 ± 0.1 |
23.3 ± 1.0 |
5.80 ± 0.36 |
0.63 ± 0.03 |
| MX2 |
20.2 ± 1.0 |
3.7 ± 0.2 |
3.9 ± 0.2 |
23.2 ± 1.0 |
5.41 ± 0.32 |
0.87 ± 0.06 |
| MX3 |
14.6 ± 0.6 |
2.7 ± 0.1 |
2.9 ± 0.1 |
23.3 ± 1.0 |
5.38 ± 0.30 |
0.63 ± 0.03 |
| RH8 |
-6.9 ± 3.2 |
1.2 ± 0.0 |
1.2 ± 0.1 |
23.5 ± 1.0 |
-5.92 ± 2.71 |
-0.30 ± 0.14 |
| RH9 |
-5.0 ± 3.1 |
0.9 ± 0.0 |
0.9 ± 0.0 |
23.5 ± 1.0 |
-5.66 ± 3.53 |
-0.21 ± 0.14 |
| RH10 |
-4.4 ± 3.1 |
0.8 ± 0.0 |
0.8 ± 0.0 |
23.5 ± 1.0 |
-5.53 ± 3.86 |
-0.19 ± 0.14 |
| Average |
11.9 |
2.8 |
2.9 |
23.2 |
1.4 |
0.5 |
| Median |
14.8 |
2.7 |
2.9 |
23.3 |
5.4 |
0.6 |
| Deviation |
17.4 |
2.1 |
2.1 |
0.4 |
5.9 |
0.8 |
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)
| 
