Database: Ace Shock Analysis
Event ID: 20072381805
Observation time: 08/26/2007 238.75365 1805 [UT]
|
|
General
Information (About, Top)
| Year |
2007 |
| Fractional day of year |
238.753649 |
| Arrival time of shock [seconds of day] |
65115.3 ± 60.0 |
| Shock type |
SF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
232.250 |
| Y GSE location of spacecraft [Re] |
39.644 |
| Z GSE location of spacecraft [Re] |
-3.034 |
| Upstream plasma points selected for analysis |
0008 |
| Upstream field points selected for analysis |
0560 |
| Downstream plasma points selected for analysis |
0010
|
| Downstream field points selected for analysis |
0637 |
| Minimum chisq/dof for RH8,RH9,RH10 |
8.94, 9.77, 10.19 |
Event added to database
|
Tue Oct 14 16:02:44 2014
|
Event last processed
|
Wed Oct 15 12:43:06 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
97.282 ± 24.416
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-383.9 ± 4.0 |
-408.4 ± 4.8 |
| Vy GSE [km/s] |
18.0 ± 2.0 |
3.2 ± 8.0 |
| Vz GSE [km/s] |
-27.1 ± 4.1 |
-67.6 ± 12.2 |
| Wi [km/s] |
53.5 ± 0.9 |
56.9 ± 1.4 |
| We [km/s] |
1690.5 ± 27.2 |
1798.4 ± 44.9 |
| Ni [n/cc] |
9.1 ± 0.5 |
15.3 ± 1.8 |
| Bx GSE [nT] |
11.9 ± 0.4 |
7.9 ± 1.0 |
| By GSE [nT] |
-6.3 ± 0.3 |
-9.9 ± 0.9 |
| Bz GSE [nT] |
13.2 ± 0.3 |
8.1 ± 1.6 |
Plasma Beta
|
0.154 ± 0.155
|
0.455 ± 0.426
|
Sound Speed [km/s]
|
69.02 ± 1.11
|
73.42 ± 1.83
|
Alfven Speed [km/s]
|
136.58 ± 4.22
|
85.10 ± 6.97
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.367 ± 0.098 |
0.859 ± 0.049 |
-0.357 ± 0.341 |
-20.91 ± 4.58 |
113.10 ± 6.46 |
| VC |
-0.520 ± 0.141 |
-0.310 ± 0.156 |
-0.796 ± 0.557 |
-52.71 ± 9.46 |
210.80 ± 15.46 |
| MX1 |
-0.447 ± 0.159 |
0.849 ± 0.092 |
-0.283 ± 0.275 |
-16.45 ± 9.25 |
117.77 ± 10.64 |
| MX2 |
-0.393 ± 0.106 |
0.857 ± 0.057 |
-0.334 ± 0.321 |
-19.51 ± 5.57 |
114.64 ± 7.05 |
| MX3 |
-0.915 ± 0.449 |
0.395 ± 1.033 |
0.085 ± 0.084 |
4.86 ± 37.51 |
156.61 ± 64.67 |
| RH08 |
-0.493 ± 0.021 |
-0.487 ± 0.021 |
0.721 ± 0.558 |
46.11 ± 0.00 |
224.62 ± 2.46 |
| RH09 |
-0.921 ± 0.024 |
0.188 ± 0.058 |
0.341 ± 0.327 |
19.92 ± 3.63 |
168.47 ± 3.59 |
| RH10 |
-0.925 ± 0.024 |
0.206 ± 0.062 |
0.318 ± 0.307 |
18.57 ± 3.75 |
167.47 ± 3.80 |
| Average |
-0.623 |
0.320 |
-0.038 |
-2.514 |
159.185 |
| Median |
-0.493 |
0.395 |
0.085 |
4.856 |
167.465 |
| Deviation |
0.251 |
0.527 |
0.491 |
30.954 |
42.978 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
39.9 ± 0.9 |
193.9 ± 1.6 |
1.73 ± 0.17 |
| VC |
38.5 ± 0.9 |
338.9 ± 3.8 |
1.73 ± 0.17 |
| MX1 |
40.3 ± 0.9 |
219.4 ± 1.7 |
1.73 ± 0.17 |
| MX2 |
40.0 ± 0.9 |
202.5 ± 1.6 |
1.73 ± 0.17 |
| MX3 |
49.5 ± 1.4 |
387.6 ± 1.8 |
1.73 ± 0.17 |
| RH08 |
69.2 ± 1.3 |
133.3 ± 2.0 |
1.73 ± 0.17 |
| RH09 |
66.1 ± 1.5 |
361.0 ± 2.1 |
1.73 ± 0.17 |
| RH10 |
64.6 ± 1.5 |
364.9 ± 18.4 |
1.73 ± 0.17 |
| Average |
51.0 |
275.2 |
1.73 |
| Median |
49.5 |
338.9 |
1.73 |
| Deviation |
13.4 |
98.0 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
28.1 ± 1.0 |
49.9 ± 0.6 |
104.7 ± 3.2 |
144.7 ± 3.8 |
0.56 ± 0.02 |
0.19 ± 0.00 |
| VC |
123.1 ± 3.9 |
51.2 ± 0.7 |
106.9 ± 3.3 |
144.2 ± 3.8 |
2.41 ± 0.10 |
0.85 ± 0.04 |
| MX1 |
24.9 ± 1.2 |
49.6 ± 0.6 |
104.1 ± 3.2 |
144.8 ± 3.8 |
0.50 ± 0.03 |
0.17 ± 0.01 |
| MX2 |
27.2 ± 1.1 |
49.9 ± 0.6 |
104.7 ± 3.2 |
144.7 ± 3.8 |
0.54 ± 0.02 |
0.19 ± 0.00 |
| MX3 |
31.7 ± 3.6 |
41.5 ± 0.5 |
88.7 ± 2.7 |
147.3 ± 3.7 |
0.76 ± 0.09 |
0.21 ± 0.02 |
| RH8 |
-27.8 ± 3.8 |
22.1 ± 0.3 |
48.5 ± 1.5 |
151.4 ± 3.6 |
-1.26 ± 0.17 |
-0.18 ± 0.03 |
| RH9 |
13.2 ± 4.2 |
25.3 ± 0.3 |
55.3 ± 1.7 |
150.9 ± 3.6 |
0.52 ± 0.17 |
0.09 ± 0.03 |
| RH10 |
14.6 ± 4.2 |
26.8 ± 0.3 |
58.6 ± 1.8 |
150.7 ± 3.6 |
0.55 ± 0.16 |
0.10 ± 0.03 |
| Average |
29.4 |
39.6 |
83.9 |
147.3 |
0.6 |
0.2 |
| Median |
27.2 |
49.6 |
104.1 |
147.3 |
0.5 |
0.2 |
| Deviation |
42.4 |
12.7 |
25.4 |
3.2 |
1.0 |
0.3 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
17.3 ± 6.7 |
46.8 ± 1.9 |
65.2 ± 5.3 |
102.3 ± 5.3 |
0.37 ± 0.13 |
0.17 ± 0.06 |
| VC |
73.5 ± 11.5 |
48.0 ± 2.0 |
66.6 ± 5.5 |
101.7 ± 5.3 |
1.53 ± 0.21 |
0.72 ± 0.10 |
| MX1 |
15.0 ± 6.9 |
46.4 ± 1.9 |
64.9 ± 5.3 |
102.5 ± 5.3 |
0.32 ± 0.14 |
0.14 ± 0.06 |
| MX2 |
16.6 ± 6.7 |
46.7 ± 1.9 |
65.2 ± 5.3 |
102.3 ± 5.3 |
0.35 ± 0.13 |
0.16 ± 0.06 |
| MX3 |
18.6 ± 6.6 |
38.3 ± 1.6 |
55.2 ± 4.5 |
105.8 ± 5.4 |
0.48 ± 0.17 |
0.18 ± 0.06 |
| RH8 |
-17.8 ± 7.2 |
20.0 ± 0.8 |
30.2 ± 2.5 |
110.7 ± 5.6 |
-0.88 ± 0.34 |
-0.16 ± 0.06 |
| RH9 |
7.3 ± 7.1 |
22.9 ± 1.0 |
34.5 ± 2.8 |
110.1 ± 5.5 |
0.32 ± 0.31 |
0.07 ± 0.06 |
| RH10 |
7.9 ± 7.0 |
24.4 ± 1.0 |
36.5 ± 3.0 |
109.8 ± 5.5 |
0.33 ± 0.29 |
0.07 ± 0.06 |
| Average |
17.3 |
36.7 |
52.3 |
105.6 |
0.4 |
0.2 |
| Median |
16.6 |
46.4 |
64.9 |
105.8 |
0.4 |
0.2 |
| Deviation |
25.6 |
12.2 |
15.9 |
4.0 |
0.6 |
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)
| 
