Database: Ace Shock Analysis
Event ID: 20081940852
Observation time: 07/12/2008 194.36988 0852 [UT]
|
|
General
Information (About, Top)
| Year |
2008 |
| Fractional day of year |
194.369882 |
| Arrival time of shock [seconds of day] |
31957.8 ± 60.0 |
| Shock type |
SF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
225.270 |
| Y GSE location of spacecraft [Re] |
14.165 |
| Z GSE location of spacecraft [Re] |
22.964 |
| Upstream plasma points selected for analysis |
0009 |
| Upstream field points selected for analysis |
0583 |
| Downstream plasma points selected for analysis |
0012
|
| Downstream field points selected for analysis |
0779 |
| Minimum chisq/dof for RH8,RH9,RH10 |
3.33, 3.52, 3.57 |
Event added to database
|
Wed Oct 15 10:09:39 2014
|
Event last processed
|
Wed Oct 15 13:00:33 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
39.574 ± 0.881
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-545.8 ± 5.5 |
-564.7 ± 5.7 |
| Vy GSE [km/s] |
52.4 ± 4.1 |
104.5 ± 4.6 |
| Vz GSE [km/s] |
-3.7 ± 10.1 |
14.6 ± 6.9 |
| Wi [km/s] |
63.8 ± 2.7 |
70.3 ± 1.7 |
| We [km/s] |
2017.7 ± 86.7 |
2221.6 ± 53.8 |
| Ni [n/cc] |
4.5 ± 0.4 |
6.3 ± 0.5 |
| Bx GSE [nT] |
6.7 ± 0.8 |
6.9 ± 1.1 |
| By GSE [nT] |
-8.7 ± 0.3 |
-6.2 ± 0.9 |
| Bz GSE [nT] |
-5.1 ± 0.8 |
0.6 ± 1.4 |
Plasma Beta
|
0.265 ± 0.245
|
0.727 ± 0.737
|
Sound Speed [km/s]
|
82.37 ± 3.54
|
90.70 ± 2.20
|
Alfven Speed [km/s]
|
125.02 ± 6.84
|
82.58 ± 3.60
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.725 ± 0.126 |
0.648 ± 0.140 |
-0.231 ± 0.227 |
-13.37 ± 9.11 |
138.20 ± 10.88 |
| VC |
-0.324 ± 0.127 |
0.895 ± 0.074 |
0.307 ± 0.297 |
17.90 ± 11.50 |
109.93 ± 8.05 |
| MX1 |
-0.961 ± 0.276 |
0.275 ± 0.968 |
0.014 ± 0.014 |
0.79 ± 19.33 |
164.06 ± 57.68 |
| MX2 |
-0.881 ± 0.209 |
0.445 ± 0.413 |
-0.159 ± 0.158 |
-9.15 ± 8.73 |
153.22 ± 26.82 |
| MX3 |
-0.427 ± 0.185 |
0.844 ± 0.100 |
-0.325 ± 0.313 |
-18.97 ± 7.04 |
116.82 ± 12.49 |
| RH08 |
-0.991 ± 0.002 |
-0.096 ± 0.013 |
0.095 ± 0.095 |
5.45 ± 1.08 |
185.52 ± 0.78 |
| RH09 |
-0.988 ± 0.007 |
-0.113 ± 0.036 |
0.106 ± 0.106 |
6.09 ± 2.97 |
186.52 ± 2.11 |
| RH10 |
-0.988 ± 0.007 |
-0.113 ± 0.040 |
0.106 ± 0.106 |
6.09 ± 3.17 |
186.52 ± 2.33 |
| Average |
-0.786 |
0.348 |
-0.011 |
-0.646 |
155.097 |
| Median |
-0.881 |
0.445 |
0.095 |
5.450 |
164.060 |
| Deviation |
0.270 |
0.426 |
0.210 |
12.212 |
31.110 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
39.8 ± 4.8 |
582.2 ± 49.3 |
1.42 ± 0.18 |
| VC |
18.4 ± 2.5 |
419.3 ± 85.6 |
1.42 ± 0.18 |
| MX1 |
42.8 ± 4.7 |
656.5 ± 23.7 |
1.42 ± 0.18 |
| MX2 |
42.3 ± 5.1 |
635.1 ± 33.7 |
1.42 ± 0.18 |
| MX3 |
45.3 ± 3.5 |
438.8 ± 63.7 |
1.42 ± 0.18 |
| RH08 |
58.8 ± 3.9 |
592.5 ± 6.7 |
1.42 ± 0.18 |
| RH09 |
59.4 ± 3.8 |
586.2 ± 7.8 |
1.42 ± 0.18 |
| RH10 |
59.4 ± 3.8 |
586.2 ± 80.7 |
1.42 ± 0.18 |
| Average |
45.8 |
562.1 |
1.42 |
| Median |
45.3 |
586.2 |
1.42 |
| Deviation |
13.9 |
86.5 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
151.5 ± 6.7 |
57.1 ± 1.0 |
96.1 ± 5.3 |
138.5 ± 4.5 |
2.66 ± 0.14 |
1.09 ± 0.07 |
| VC |
196.5 ± 2.9 |
75.5 ± 2.2 |
118.6 ± 6.5 |
129.4 ± 5.6 |
2.60 ± 0.04 |
1.52 ± 0.09 |
| MX1 |
117.4 ± 5.2 |
54.0 ± 0.9 |
91.7 ± 5.0 |
139.8 ± 4.4 |
2.18 ± 0.12 |
0.84 ± 0.05 |
| MX2 |
130.1 ± 6.4 |
54.5 ± 1.0 |
92.4 ± 5.1 |
139.6 ± 4.5 |
2.39 ± 0.14 |
0.93 ± 0.06 |
| MX3 |
160.5 ± 6.8 |
51.4 ± 0.9 |
88.0 ± 4.8 |
140.7 ± 4.4 |
3.12 ± 0.15 |
1.14 ± 0.07 |
| RH8 |
57.0 ± 4.9 |
36.6 ± 0.5 |
64.7 ± 3.5 |
145.3 ± 4.1 |
1.56 ± 0.15 |
0.39 ± 0.04 |
| RH9 |
53.3 ± 4.8 |
35.9 ± 0.5 |
63.6 ± 3.5 |
145.5 ± 4.1 |
1.49 ± 0.15 |
0.37 ± 0.03 |
| RH10 |
53.3 ± 4.8 |
35.9 ± 0.5 |
63.6 ± 3.5 |
145.5 ± 4.1 |
1.49 ± 0.15 |
0.37 ± 0.03 |
| Average |
114.9 |
50.1 |
84.8 |
140.5 |
2.2 |
0.8 |
| Median |
130.1 |
54.0 |
91.7 |
140.7 |
2.4 |
0.9 |
| Deviation |
55.1 |
13.7 |
19.6 |
5.4 |
0.6 |
0.4 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
108.3 ± 4.4 |
51.7 ± 1.6 |
63.5 ± 2.8 |
111.2 ± 3.1 |
2.09 ± 0.08 |
0.97 ± 0.04 |
| VC |
138.2 ± 3.5 |
71.0 ± 2.3 |
78.4 ± 3.4 |
100.0 ± 2.6 |
1.95 ± 0.06 |
1.38 ± 0.03 |
| MX1 |
84.7 ± 5.1 |
48.8 ± 1.5 |
60.6 ± 2.6 |
112.6 ± 3.1 |
1.73 ± 0.07 |
0.75 ± 0.03 |
| MX2 |
93.2 ± 4.6 |
49.3 ± 1.5 |
61.1 ± 2.7 |
112.4 ± 3.1 |
1.89 ± 0.07 |
0.83 ± 0.03 |
| MX3 |
114.5 ± 4.8 |
46.4 ± 1.4 |
58.1 ± 2.5 |
113.6 ± 3.1 |
2.47 ± 0.13 |
1.01 ± 0.05 |
| RH8 |
41.6 ± 6.1 |
32.8 ± 1.0 |
42.8 ± 1.9 |
118.2 ± 3.3 |
1.27 ± 0.16 |
0.35 ± 0.04 |
| RH9 |
38.6 ± 6.1 |
32.2 ± 1.0 |
42.0 ± 1.8 |
118.4 ± 3.3 |
1.20 ± 0.16 |
0.33 ± 0.04 |
| RH10 |
38.6 ± 6.1 |
32.2 ± 1.0 |
42.0 ± 1.8 |
118.4 ± 3.3 |
1.20 ± 0.16 |
0.33 ± 0.04 |
| Average |
82.2 |
45.5 |
56.0 |
113.1 |
1.7 |
0.7 |
| Median |
93.2 |
48.8 |
60.6 |
113.6 |
1.9 |
0.8 |
| Deviation |
38.6 |
13.3 |
13.0 |
6.1 |
0.5 |
0.4 |
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)
| 
