Database: Ace Shock Analysis
Event ID: 20012731846
Observation time: 09/30/2001 273.78236 1846 [UT]
|
|
General
Information (About, Top)
| Year |
2001 |
| Fractional day of year |
273.782361 |
| Arrival time of shock [seconds of day] |
67596.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.035 |
| Y GSE location of spacecraft [Re] |
-0.003 |
| Z GSE location of spacecraft [Re] |
-0.002 |
| Upstream plasma points selected for analysis |
0015 |
| Upstream field points selected for analysis |
0064 |
| Downstream plasma points selected for analysis |
0011
|
| Downstream field points selected for analysis |
0045 |
| Minimum chisq/dof for RH8,RH9,RH10 |
56.53, 84.39, 85.59 |
Event added to database
|
Sat Apr 30 21:52:21 2005
|
Event last processed
|
Tue May 3 14:05:39 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.005 ± 0.000
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-458.6 ± 2.7 |
-545.7 ± 3.9 |
| Vy GSE [km/s] |
-37.9 ± 2.7 |
-66.7 ± 4.5 |
| Vz GSE [km/s] |
7.8 ± 4.7 |
14.3 ± 5.9 |
| Wi [km/s] |
22.8 ± 1.7 |
38.9 ± 2.0 |
| We [km/s] |
721.7 ± 55.3 |
1229.4 ± 62.5 |
| Ni [n/cc] |
12.6 ± 0.6 |
18.1 ± 1.1 |
| Bx GSE [nT] |
-3.4 ± 0.4 |
-3.2 ± 0.6 |
| By GSE [nT] |
7.4 ± 0.2 |
17.6 ± 0.5 |
| Bz GSE [nT] |
-2.2 ± 0.8 |
-1.8 ± 1.0 |
Plasma Beta
|
0.195 ± 0.186
|
0.178 ± 0.179
|
Sound Speed [km/s]
|
29.46 ± 2.26
|
50.19 ± 2.55
|
Alfven Speed [km/s]
|
52.14 ± 2.24
|
92.52 ± 3.67
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.826 ± 0.175 |
0.080 ± 0.097 |
-0.557 ± 0.491 |
-33.87 ± 18.08 |
174.48 ± 6.59 |
| VC |
-0.947 ± 0.019 |
-0.313 ± 0.055 |
0.069 ± 0.069 |
3.95 ± 4.45 |
198.29 ± 3.34 |
| MX1 |
-0.999 ± 0.003 |
0.021 ± 0.073 |
-0.028 ± 0.028 |
-1.60 ± 5.28 |
178.77 ± 4.18 |
| MX2 |
-0.999 ± 0.003 |
0.015 ± 0.074 |
0.035 ± 0.035 |
2.00 ± 4.58 |
179.13 ± 4.23 |
| MX3 |
-0.996 ± 0.007 |
0.011 ± 0.075 |
0.084 ± 0.084 |
4.84 ± 4.66 |
179.39 ± 4.32 |
| RH08 |
-0.962 ± 0.010 |
0.267 ± 0.034 |
0.061 ± 0.061 |
3.52 ± 2.00 |
164.46 ± 2.00 |
| RH09 |
-0.935 ± 0.024 |
0.350 ± 0.064 |
0.061 ± 0.061 |
3.52 ± 4.03 |
159.44 ± 3.95 |
| RH10 |
-0.935 ± 0.024 |
0.350 ± 0.064 |
0.061 ± 0.061 |
3.52 ± 4.03 |
159.44 ± 3.95 |
| Average |
-0.950 |
0.098 |
-0.027 |
-1.763 |
174.175 |
| Median |
-0.947 |
0.080 |
0.061 |
3.523 |
178.773 |
| Deviation |
0.057 |
0.222 |
0.217 |
13.121 |
12.999 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
57.1 ± 3.2 |
595.3 ± 38.0 |
1.44 ± 0.10 |
| VC |
85.0 ± 3.4 |
750.9 ± 52.9 |
1.44 ± 0.10 |
| MX1 |
64.8 ± 3.4 |
746.4 ± 50.4 |
1.44 ± 0.10 |
| MX2 |
66.2 ± 3.5 |
749.7 ± 51.0 |
1.44 ± 0.10 |
| MX3 |
67.3 ± 3.6 |
749.9 ± 51.3 |
1.44 ± 0.10 |
| RH08 |
52.9 ± 3.8 |
687.3 ± 46.4 |
1.44 ± 0.10 |
| RH09 |
48.3 ± 3.9 |
654.9 ± 44.2 |
1.44 ± 0.10 |
| RH10 |
48.3 ± 3.9 |
654.9 ± 44.2 |
1.44 ± 0.10 |
| Average |
61.3 |
698.7 |
1.44 |
| Median |
64.8 |
746.4 |
1.44 |
| Deviation |
12.3 |
59.6 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
223.6 ± 2.5 |
14.3 ± 0.8 |
28.3 ± 1.2 |
58.2 ± 1.6 |
15.67 ± 0.95 |
3.84 ± 0.12 |
| VC |
304.1 ± 3.3 |
2.2 ± 0.1 |
4.5 ± 0.2 |
59.9 ± 1.6 |
137.62 ± 7.72 |
5.08 ± 0.15 |
| MX1 |
289.1 ± 2.6 |
11.1 ± 0.6 |
22.2 ± 1.0 |
58.9 ± 1.6 |
26.20 ± 1.49 |
4.91 ± 0.15 |
| MX2 |
291.7 ± 2.7 |
10.5 ± 0.6 |
21.0 ± 0.9 |
59.0 ± 1.6 |
27.90 ± 1.58 |
4.95 ± 0.15 |
| MX3 |
292.7 ± 2.8 |
10.0 ± 0.5 |
20.1 ± 0.9 |
59.1 ± 1.6 |
29.33 ± 1.65 |
4.96 ± 0.15 |
| RH8 |
256.0 ± 2.3 |
16.0 ± 0.9 |
31.4 ± 1.4 |
57.8 ± 1.7 |
16.04 ± 0.93 |
4.43 ± 0.14 |
| RH9 |
239.1 ± 2.2 |
17.8 ± 1.0 |
34.7 ± 1.5 |
57.2 ± 1.7 |
13.46 ± 0.79 |
4.18 ± 0.13 |
| RH10 |
239.1 ± 2.2 |
17.8 ± 1.0 |
34.7 ± 1.5 |
57.2 ± 1.7 |
13.46 ± 0.79 |
4.18 ± 0.13 |
| Average |
266.9 |
12.5 |
24.6 |
58.4 |
35.0 |
4.6 |
| Median |
289.1 |
14.3 |
28.3 |
58.9 |
26.2 |
4.9 |
| Deviation |
30.9 |
5.2 |
10.0 |
1.0 |
42.0 |
0.5 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
157.6 ± 2.4 |
24.6 ± 0.9 |
50.3 ± 2.0 |
102.4 ± 2.9 |
6.41 ± 0.25 |
1.54 ± 0.04 |
| VC |
212.1 ± 3.3 |
3.8 ± 0.1 |
8.0 ± 0.3 |
105.2 ± 2.9 |
55.66 ± 2.25 |
2.02 ± 0.06 |
| MX1 |
202.8 ± 3.9 |
19.0 ± 0.7 |
39.3 ± 1.6 |
103.6 ± 2.9 |
10.66 ± 0.48 |
1.96 ± 0.06 |
| MX2 |
204.9 ± 4.1 |
18.0 ± 0.7 |
37.3 ± 1.5 |
103.7 ± 2.9 |
11.37 ± 0.52 |
1.98 ± 0.06 |
| MX3 |
205.6 ± 4.3 |
17.2 ± 0.6 |
35.7 ± 1.4 |
103.9 ± 2.9 |
11.96 ± 0.55 |
1.98 ± 0.07 |
| RH8 |
179.5 ± 4.9 |
27.5 ± 1.1 |
55.8 ± 2.2 |
101.6 ± 3.0 |
6.53 ± 0.35 |
1.77 ± 0.07 |
| RH9 |
167.4 ± 5.1 |
30.6 ± 1.2 |
61.5 ± 2.4 |
100.7 ± 3.0 |
5.48 ± 0.31 |
1.66 ± 0.07 |
| RH10 |
167.4 ± 5.1 |
30.6 ± 1.2 |
61.5 ± 2.4 |
100.7 ± 3.0 |
5.48 ± 0.31 |
1.66 ± 0.07 |
| Average |
187.2 |
21.4 |
43.7 |
102.7 |
14.2 |
1.8 |
| Median |
202.8 |
24.6 |
50.3 |
103.6 |
10.7 |
2.0 |
| Deviation |
21.5 |
9.0 |
17.8 |
1.6 |
17.0 |
0.2 |
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)
| 
