Database: Ace Shock Analysis
Event ID: 20000220022
Observation time: 01/22/2000 22.01565 0022 [UT]
|
|
General
Information (About, Top)
| Year |
2000 |
| Fractional day of year |
22.015648 |
| Arrival time of shock [seconds of day] |
1352.0 ± 20.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.038 |
| Y GSE location of spacecraft [Re] |
0.003 |
| Z GSE location of spacecraft [Re] |
0.003 |
| Upstream plasma points selected for analysis |
0010 |
| Upstream field points selected for analysis |
0039 |
| Downstream plasma points selected for analysis |
0006
|
| Downstream field points selected for analysis |
0050 |
| Minimum chisq/dof for RH8,RH9,RH10 |
16.04, 21.72, 27.64 |
Event added to database
|
Sat Apr 30 21:45:33 2005
|
Event last processed
|
Wed Oct 15 15:47:11 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.007 ± 0.003
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-327.6 ± 0.8 |
-345.2 ± 1.8 |
| Vy GSE [km/s] |
9.5 ± 1.7 |
9.1 ± 2.9 |
| Vz GSE [km/s] |
-9.9 ± 2.2 |
-51.5 ± 1.8 |
| Wi [km/s] |
29.8 ± 0.7 |
48.8 ± 1.8 |
| We [km/s] |
941.4 ± 22.5 |
1544.6 ± 56.3 |
| Ni [n/cc] |
6.9 ± 0.3 |
13.0 ± 0.8 |
| Bx GSE [nT] |
-4.7 ± 0.1 |
-8.0 ± 0.1 |
| By GSE [nT] |
0.5 ± 0.2 |
0.7 ± 0.7 |
| Bz GSE [nT] |
-2.2 ± 0.2 |
-1.0 ± 0.3 |
Plasma Beta
|
0.474 ± 0.476
|
1.009 ± 1.022
|
Sound Speed [km/s]
|
38.46 ± 0.90
|
63.17 ± 2.20
|
Alfven Speed [km/s]
|
43.26 ± 0.61
|
48.72 ± 1.50
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.404 ± 0.096 |
0.055 ± 0.176 |
-0.913 ± 0.469 |
-65.97 ± 5.89 |
172.28 ± 24.98 |
| VC |
-0.401 ± 0.045 |
-0.014 ± 0.071 |
-0.916 ± 0.464 |
-66.37 ± 2.79 |
181.94 ± 10.17 |
| MX1 |
-0.362 ± 0.061 |
-0.037 ± 0.086 |
-0.932 ± 0.436 |
-68.68 ± 3.72 |
185.83 ± 13.52 |
| MX2 |
-0.360 ± 0.062 |
-0.035 ± 0.079 |
-0.932 ± 0.435 |
-68.77 ± 3.79 |
185.57 ± 12.48 |
| MX3 |
-0.359 ± 0.063 |
-0.033 ± 0.073 |
-0.933 ± 0.434 |
-68.84 ± 3.85 |
185.25 ± 11.58 |
| RH08 |
-0.328 ± 0.002 |
0.032 ± 0.016 |
-0.944 ± 0.407 |
-70.76 ± 0.00 |
174.48 ± 2.75 |
| RH09 |
-0.323 ± 0.058 |
0.066 ± 0.072 |
-0.944 ± 0.407 |
-70.76 ± 3.48 |
168.47 ± 12.66 |
| RH10 |
-0.325 ± 0.066 |
0.055 ± 0.071 |
-0.944 ± 0.407 |
-70.76 ± 4.01 |
170.47 ± 12.32 |
| Average |
-0.358 |
0.011 |
-0.932 |
-68.863 |
178.036 |
| Median |
-0.359 |
0.032 |
-0.932 |
-68.770 |
181.944 |
| Deviation |
0.032 |
0.045 |
0.012 |
1.906 |
7.360 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
40.8 ± 2.1 |
236.7 ± 1.4 |
1.91 ± 0.17 |
| VC |
41.5 ± 2.2 |
235.2 ± 1.4 |
1.91 ± 0.17 |
| MX1 |
44.1 ± 2.2 |
222.4 ± 1.4 |
1.91 ± 0.17 |
| MX2 |
44.1 ± 2.2 |
222.0 ± 1.4 |
1.91 ± 0.17 |
| MX3 |
44.2 ± 2.2 |
221.7 ± 1.4 |
1.91 ± 0.17 |
| RH08 |
45.6 ± 2.1 |
212.0 ± 1.4 |
1.91 ± 0.17 |
| RH09 |
45.7 ± 2.1 |
210.4 ± 1.3 |
1.91 ± 0.17 |
| RH10 |
45.6 ± 2.1 |
211.0 ± 10.3 |
1.91 ± 0.17 |
| Average |
44.0 |
221.4 |
1.91 |
| Median |
44.2 |
222.0 |
1.91 |
| Deviation |
1.9 |
10.3 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
94.8 ± 2.0 |
23.9 ± 0.4 |
32.7 ± 0.5 |
52.7 ± 0.8 |
3.97 ± 0.13 |
1.80 ± 0.06 |
| VC |
95.0 ± 2.0 |
23.6 ± 0.4 |
32.4 ± 0.5 |
52.9 ± 0.9 |
4.03 ± 0.13 |
1.80 ± 0.06 |
| MX1 |
95.0 ± 2.0 |
22.4 ± 0.4 |
31.1 ± 0.4 |
53.4 ± 0.9 |
4.24 ± 0.14 |
1.78 ± 0.06 |
| MX2 |
95.0 ± 2.0 |
22.4 ± 0.4 |
31.0 ± 0.4 |
53.4 ± 0.9 |
4.25 ± 0.14 |
1.78 ± 0.06 |
| MX3 |
95.0 ± 2.0 |
22.3 ± 0.4 |
31.0 ± 0.4 |
53.4 ± 0.9 |
4.25 ± 0.14 |
1.78 ± 0.06 |
| RH8 |
94.8 ± 2.1 |
21.7 ± 0.4 |
30.3 ± 0.4 |
53.7 ± 0.9 |
4.37 ± 0.15 |
1.77 ± 0.06 |
| RH9 |
94.6 ± 2.1 |
21.6 ± 0.4 |
30.2 ± 0.4 |
53.7 ± 0.9 |
4.37 ± 0.15 |
1.76 ± 0.06 |
| RH10 |
94.6 ± 2.1 |
21.7 ± 0.4 |
30.3 ± 0.4 |
53.7 ± 0.9 |
4.37 ± 0.15 |
1.76 ± 0.06 |
| Average |
94.8 |
22.4 |
31.1 |
53.3 |
4.2 |
1.8 |
| Median |
95.0 |
22.4 |
31.0 |
53.4 |
4.3 |
1.8 |
| Deviation |
0.2 |
0.9 |
1.0 |
0.4 |
0.2 |
0.0 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
49.8 ± 1.5 |
31.8 ± 1.0 |
36.9 ± 1.1 |
73.1 ± 2.4 |
1.57 ± 0.08 |
0.68 ± 0.03 |
| VC |
49.8 ± 1.6 |
31.4 ± 1.0 |
36.5 ± 1.1 |
73.3 ± 2.4 |
1.59 ± 0.09 |
0.68 ± 0.04 |
| MX1 |
49.9 ± 1.7 |
29.9 ± 0.9 |
35.0 ± 1.1 |
74.0 ± 2.4 |
1.67 ± 0.09 |
0.67 ± 0.04 |
| MX2 |
49.9 ± 1.7 |
29.9 ± 0.9 |
35.0 ± 1.1 |
74.0 ± 2.4 |
1.67 ± 0.09 |
0.67 ± 0.04 |
| MX3 |
49.9 ± 1.7 |
29.8 ± 0.9 |
34.9 ± 1.1 |
74.0 ± 2.4 |
1.67 ± 0.09 |
0.67 ± 0.04 |
| RH8 |
49.8 ± 1.6 |
29.0 ± 0.9 |
34.1 ± 1.1 |
74.3 ± 2.5 |
1.72 ± 0.09 |
0.67 ± 0.03 |
| RH9 |
49.7 ± 1.6 |
28.9 ± 0.9 |
34.0 ± 1.0 |
74.4 ± 2.5 |
1.72 ± 0.09 |
0.67 ± 0.03 |
| RH10 |
49.7 ± 1.6 |
29.0 ± 0.9 |
34.1 ± 1.1 |
74.3 ± 2.5 |
1.72 ± 0.09 |
0.67 ± 0.03 |
| Average |
49.8 |
30.0 |
35.1 |
73.9 |
1.7 |
0.7 |
| Median |
49.8 |
29.9 |
35.0 |
74.0 |
1.7 |
0.7 |
| Deviation |
0.1 |
1.1 |
1.1 |
0.5 |
0.1 |
0.0 |
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)
| 
