Database: Ace Shock Analysis
Event ID: 20072981912
Observation time: 10/25/2007 298.80053 1912 [UT]
|
|
General
Information (About, Top)
| Year |
2007 |
| Fractional day of year |
298.800526 |
| Arrival time of shock [seconds of day] |
69165.4 ± 100.0 |
| Shock type |
FR |
| Electron data availability |
0 |
| X GSE location of spacecraft [Re] |
243.007 |
| Y GSE location of spacecraft [Re] |
-13.884 |
| Z GSE location of spacecraft [Re] |
-21.700 |
| Upstream plasma points selected for analysis |
0009 |
| Upstream field points selected for analysis |
0570 |
| Downstream plasma points selected for analysis |
0010
|
| Downstream field points selected for analysis |
0634 |
| Minimum chisq/dof for RH8,RH9,RH10 |
5.00, 16.94, 18.24 |
Event added to database
|
Tue Oct 14 16:15:00 2014
|
Event last processed
|
Wed Oct 15 12:49:08 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
-19.105 ± 16.574
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-606.2 ± 4.6 |
-688.7 ± 13.8 |
| Vy GSE [km/s] |
27.9 ± 4.2 |
-11.3 ± 9.0 |
| Vz GSE [km/s] |
-40.5 ± 6.7 |
52.3 ± 6.6 |
| Wi [km/s] |
73.7 ± 3.0 |
53.0 ± 2.5 |
| We [km/s] |
2332.0 ± 95.3 |
1674.5 ± 78.5 |
| Ni [n/cc] |
7.9 ± 0.9 |
2.9 ± 0.3 |
| Bx GSE [nT] |
-6.7 ± 1.2 |
-1.0 ± 0.8 |
| By GSE [nT] |
2.0 ± 0.9 |
2.0 ± 0.4 |
| Bz GSE [nT] |
-2.9 ± 1.1 |
-3.2 ± 0.5 |
Plasma Beta
|
1.659 ± 1.327
|
1.125 ± 1.233
|
Sound Speed [km/s]
|
95.20 ± 3.89
|
68.36 ± 3.21
|
Alfven Speed [km/s]
|
59.74 ± 8.02
|
50.47 ± 4.75
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.369 ± 0.637 |
0.684 ± 0.513 |
-0.630 ± 0.529 |
-39.03 ± 41.18 |
118.34 ± 50.23 |
| VC |
-0.632 ± 0.051 |
-0.301 ± 0.061 |
0.714 ± 0.557 |
45.57 ± 3.86 |
205.50 ± 5.16 |
| MX1 |
-0.373 ± 0.643 |
0.638 ± 0.565 |
-0.673 ± 0.546 |
-42.31 ± 44.26 |
120.34 ± 52.73 |
| MX2 |
-0.400 ± 0.659 |
0.673 ± 0.538 |
-0.622 ± 0.526 |
-38.45 ± 42.32 |
120.71 ± 52.44 |
| MX3 |
-0.378 ± 0.653 |
0.609 ± 0.595 |
-0.697 ± 0.553 |
-44.22 ± 45.61 |
121.81 ± 54.92 |
| RH08 |
-0.051 ± 0.000 |
-0.901 ± 0.008 |
-0.430 ± 0.401 |
-25.48 ± 1.12 |
266.74 ± 0.00 |
| RH09 |
-0.128 ± 0.064 |
0.366 ± 0.064 |
-0.922 ± 0.455 |
-67.19 ± 4.00 |
109.30 ± 9.53 |
| RH10 |
-0.051 ± 0.069 |
-0.896 ± 0.031 |
-0.441 ± 0.410 |
-26.19 ± 4.03 |
266.74 ± 4.43 |
| Average |
-0.298 |
0.109 |
-0.463 |
-29.662 |
166.185 |
| Median |
-0.369 |
0.609 |
-0.622 |
-38.454 |
121.806 |
| Deviation |
0.203 |
0.701 |
0.500 |
33.026 |
69.110 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
42.1 ± 8.2 |
299.7 ± 1.3 |
0.38 ± 0.05 |
| VC |
77.8 ± 8.1 |
268.5 ± 2.3 |
0.38 ± 0.05 |
| MX1 |
41.3 ± 8.3 |
304.2 ± 1.3 |
0.38 ± 0.05 |
| MX2 |
40.1 ± 8.2 |
315.4 ± 1.3 |
0.38 ± 0.05 |
| MX3 |
40.9 ± 8.4 |
306.9 ± 1.3 |
0.38 ± 0.05 |
| RH08 |
88.0 ± 5.9 |
22.6 ± 0.8 |
0.38 ± 0.05 |
| RH09 |
56.3 ± 8.2 |
177.8 ± 1.8 |
0.38 ± 0.05 |
| RH10 |
88.3 ± 5.9 |
23.7 ± 7.3 |
0.38 ± 0.05 |
| Average |
59.4 |
214.9 |
0.38 |
| Median |
56.3 |
299.7 |
0.38 |
| Deviation |
21.9 |
126.2 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
31.6 ± 5.5 |
40.0 ± 4.3 |
44.4 ± 6.0 |
105.3 ± 2.1 |
0.79 ± 0.10 |
0.30 ± 0.05 |
| VC |
-77.1 ± 7.3 |
10.7 ± 1.1 |
12.6 ± 1.7 |
112.2 ± 2.4 |
-7.25 ± 0.69 |
-0.69 ± 0.05 |
| MX1 |
32.7 ± 5.7 |
40.5 ± 4.4 |
44.9 ± 6.0 |
105.1 ± 2.1 |
0.81 ± 0.10 |
0.31 ± 0.05 |
| MX2 |
29.0 ± 5.4 |
41.4 ± 4.5 |
45.7 ± 6.1 |
104.7 ± 2.2 |
0.70 ± 0.09 |
0.28 ± 0.05 |
| MX3 |
32.7 ± 5.7 |
40.8 ± 4.5 |
45.2 ± 6.1 |
104.9 ± 2.2 |
0.80 ± 0.10 |
0.31 ± 0.05 |
| RH8 |
-0.8 ± 3.6 |
1.7 ± 0.2 |
2.0 ± 0.3 |
112.7 ± 2.5 |
-0.39 ± 2.06 |
-0.01 ± 0.03 |
| RH9 |
52.6 ± 6.8 |
28.8 ± 3.0 |
33.1 ± 4.4 |
108.9 ± 2.2 |
1.83 ± 0.19 |
0.48 ± 0.06 |
| RH10 |
-0.0 ± 3.6 |
1.5 ± 0.1 |
1.7 ± 0.2 |
112.7 ± 2.5 |
0.05 ± 2.46 |
-0.00 ± 0.03 |
| Average |
12.6 |
25.7 |
28.7 |
108.3 |
-0.3 |
0.1 |
| Median |
31.6 |
40.0 |
44.4 |
108.9 |
0.8 |
0.3 |
| Deviation |
40.4 |
18.1 |
19.9 |
3.7 |
2.9 |
0.4 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
86.5 ± 6.4 |
32.5 ± 2.3 |
37.5 ± 3.5 |
78.6 ± 3.7 |
2.66 ± 0.18 |
1.10 ± 0.07 |
| VC |
-207.3 ± 13.8 |
8.6 ± 0.6 |
10.7 ± 1.0 |
84.6 ± 4.2 |
-24.07 ± 0.94 |
-2.45 ± 0.10 |
| MX1 |
89.3 ± 6.2 |
33.0 ± 2.3 |
37.9 ± 3.6 |
78.4 ± 3.7 |
2.71 ± 0.17 |
1.14 ± 0.07 |
| MX2 |
80.1 ± 6.3 |
33.7 ± 2.4 |
38.6 ± 3.6 |
78.1 ± 3.7 |
2.38 ± 0.18 |
1.03 ± 0.07 |
| MX3 |
90.1 ± 6.0 |
33.3 ± 2.3 |
38.2 ± 3.6 |
78.3 ± 3.7 |
2.71 ± 0.17 |
1.15 ± 0.06 |
| RH8 |
-0.5 ± 7.9 |
1.4 ± 0.1 |
1.7 ± 0.2 |
85.0 ± 4.2 |
-0.22 ± 5.70 |
-0.00 ± 0.09 |
| RH9 |
141.8 ± 6.5 |
23.3 ± 1.6 |
28.0 ± 2.6 |
81.8 ± 4.0 |
6.09 ± 0.20 |
1.73 ± 0.04 |
| RH10 |
1.6 ± 7.9 |
1.2 ± 0.1 |
1.5 ± 0.1 |
85.0 ± 4.2 |
1.45 ± 6.74 |
0.02 ± 0.09 |
| Average |
35.2 |
20.9 |
24.2 |
81.2 |
-0.8 |
0.5 |
| Median |
86.5 |
32.5 |
37.5 |
81.8 |
2.7 |
1.1 |
| Deviation |
109.0 |
14.8 |
16.8 |
3.3 |
9.6 |
1.3 |
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)
| 
