Database: Ace Shock Analysis
Event ID: 20000422318
Observation time: 02/11/2000 42.97138 2318 [UT]
|
|
General
Information (About, Top)
| Year |
2000 |
| Fractional day of year |
42.971377 |
| Arrival time of shock [seconds of day] |
83927.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.038 |
| Y GSE location of spacecraft [Re] |
-0.002 |
| Z GSE location of spacecraft [Re] |
0.004 |
| Upstream plasma points selected for analysis |
0011 |
| Upstream field points selected for analysis |
0044 |
| Downstream plasma points selected for analysis |
0011
|
| Downstream field points selected for analysis |
0041 |
| Minimum chisq/dof for RH8,RH9,RH10 |
4.98, 18.86, 19.15 |
Event added to database
|
Sat Apr 30 21:45:51 2005
|
Event last processed
|
Wed Oct 15 15:55:39 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.005 ± 0.001
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-433.5 ± 5.0 |
-569.5 ± 7.3 |
| Vy GSE [km/s] |
-9.7 ± 2.0 |
-64.3 ± 9.8 |
| Vz GSE [km/s] |
-11.0 ± 4.9 |
65.6 ± 10.8 |
| Wi [km/s] |
31.5 ± 1.1 |
55.2 ± 2.0 |
| We [km/s] |
996.9 ± 34.3 |
1746.3 ± 64.0 |
| Ni [n/cc] |
5.5 ± 0.3 |
19.7 ± 1.5 |
| Bx GSE [nT] |
3.0 ± 0.1 |
10.1 ± 1.5 |
| By GSE [nT] |
-6.0 ± 0.1 |
-18.8 ± 1.1 |
| Bz GSE [nT] |
-0.8 ± 0.4 |
-0.2 ± 0.8 |
Plasma Beta
|
0.262 ± 0.256
|
0.288 ± 0.286
|
Sound Speed [km/s]
|
40.58 ± 1.41
|
71.66 ± 2.64
|
Alfven Speed [km/s]
|
61.55 ± 1.92
|
103.84 ± 3.75
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.930 ± 0.354 |
-0.294 ± 0.839 |
-0.221 ± 0.217 |
-12.78 ± 63.82 |
197.56 ± 51.50 |
| VC |
-0.823 ± 0.039 |
-0.328 ± 0.039 |
0.464 ± 0.428 |
27.66 ± 4.81 |
201.75 ± 2.54 |
| MX1 |
-0.787 ± 0.045 |
-0.415 ± 0.057 |
0.457 ± 0.422 |
27.18 ± 4.95 |
207.82 ± 3.90 |
| MX2 |
-0.783 ± 0.044 |
-0.412 ± 0.056 |
0.466 ± 0.429 |
27.78 ± 4.80 |
207.77 ± 3.87 |
| MX3 |
-0.781 ± 0.044 |
-0.411 ± 0.056 |
0.470 ± 0.432 |
28.04 ± 4.77 |
207.75 ± 3.86 |
| RH08 |
-0.785 ± 0.006 |
-0.410 ± 0.008 |
0.464 ± 0.427 |
27.63 ± 0.60 |
207.58 ± 0.55 |
| RH09 |
-0.886 ± 0.028 |
-0.463 ± 0.053 |
0.017 ± 0.017 |
0.96 ± 3.69 |
207.58 ± 3.44 |
| RH10 |
-0.886 ± 0.028 |
-0.463 ± 0.053 |
0.017 ± 0.017 |
0.96 ± 3.86 |
207.58 ± 3.44 |
| Average |
-0.833 |
-0.400 |
0.267 |
15.929 |
205.673 |
| Median |
-0.787 |
-0.411 |
0.464 |
27.625 |
207.577 |
| Deviation |
0.059 |
0.060 |
0.282 |
16.735 |
3.881 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
82.4 ± 1.6 |
583.2 ± 13.2 |
3.39 ± 0.44 |
| VC |
82.3 ± 1.6 |
584.6 ± 7.7 |
3.39 ± 0.44 |
| MX1 |
87.7 ± 1.6 |
569.3 ± 7.8 |
3.39 ± 0.44 |
| MX2 |
87.6 ± 1.6 |
567.5 ± 7.7 |
3.39 ± 0.44 |
| MX3 |
87.6 ± 1.6 |
566.6 ± 7.7 |
3.39 ± 0.44 |
| RH08 |
87.5 ± 1.6 |
568.6 ± 7.7 |
3.39 ± 0.44 |
| RH09 |
89.5 ± 1.1 |
594.3 ± 11.7 |
3.39 ± 0.44 |
| RH10 |
89.5 ± 1.1 |
594.3 ± 11.7 |
3.39 ± 0.44 |
| Average |
86.8 |
578.6 |
3.39 |
| Median |
87.6 |
583.2 |
3.39 |
| Deviation |
2.8 |
12.0 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
174.7 ± 5.2 |
4.5 ± 0.1 |
8.1 ± 0.3 |
73.6 ± 1.8 |
38.92 ± 1.34 |
2.37 ± 0.07 |
| VC |
230.2 ± 4.8 |
4.5 ± 0.1 |
8.2 ± 0.3 |
73.6 ± 1.8 |
50.94 ± 1.83 |
3.13 ± 0.10 |
| MX1 |
229.5 ± 4.8 |
1.3 ± 0.0 |
2.4 ± 0.1 |
73.7 ± 1.8 |
172.55 ± 6.18 |
3.11 ± 0.10 |
| MX2 |
229.5 ± 4.7 |
1.4 ± 0.0 |
2.5 ± 0.1 |
73.7 ± 1.8 |
164.48 ± 5.91 |
3.11 ± 0.10 |
| MX3 |
229.5 ± 4.7 |
1.4 ± 0.0 |
2.6 ± 0.1 |
73.7 ± 1.8 |
161.16 ± 5.80 |
3.11 ± 0.10 |
| RH8 |
229.5 ± 4.8 |
1.5 ± 0.0 |
2.7 ± 0.1 |
73.7 ± 1.8 |
154.31 ± 5.54 |
3.11 ± 0.10 |
| RH9 |
205.7 ± 5.0 |
0.3 ± 0.0 |
0.5 ± 0.0 |
73.7 ± 1.8 |
689.27 ± 23.15 |
2.79 ± 0.08 |
| RH10 |
205.7 ± 5.0 |
0.3 ± 0.0 |
0.5 ± 0.0 |
73.7 ± 1.8 |
689.27 ± 23.15 |
2.79 ± 0.08 |
| Average |
216.8 |
1.9 |
3.5 |
73.7 |
265.1 |
2.9 |
| Median |
229.5 |
1.4 |
2.6 |
73.7 |
164.5 |
3.1 |
| Deviation |
20.1 |
1.7 |
3.0 |
0.1 |
266.9 |
0.3 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
49.9 ± 11.7 |
7.8 ± 0.2 |
13.7 ± 0.5 |
126.0 ± 2.3 |
6.38 ± 1.45 |
0.40 ± 0.10 |
| VC |
65.1 ± 5.9 |
7.9 ± 0.2 |
13.8 ± 0.5 |
126.0 ± 2.3 |
8.27 ± 0.69 |
0.52 ± 0.05 |
| MX1 |
65.2 ± 6.4 |
2.3 ± 0.0 |
4.1 ± 0.1 |
126.2 ± 2.3 |
28.14 ± 2.55 |
0.52 ± 0.05 |
| MX2 |
65.1 ± 6.3 |
2.4 ± 0.0 |
4.3 ± 0.2 |
126.2 ± 2.3 |
26.80 ± 2.40 |
0.52 ± 0.05 |
| MX3 |
65.1 ± 6.3 |
2.5 ± 0.0 |
4.4 ± 0.2 |
126.2 ± 2.3 |
26.25 ± 2.33 |
0.52 ± 0.05 |
| RH8 |
65.1 ± 6.3 |
2.6 ± 0.1 |
4.6 ± 0.2 |
126.2 ± 2.3 |
25.14 ± 2.25 |
0.52 ± 0.05 |
| RH9 |
59.3 ± 10.8 |
0.5 ± 0.0 |
0.9 ± 0.0 |
126.2 ± 2.3 |
114.04 ± 19.94 |
0.47 ± 0.09 |
| RH10 |
59.3 ± 10.8 |
0.5 ± 0.0 |
0.9 ± 0.0 |
126.2 ± 2.3 |
114.04 ± 19.94 |
0.47 ± 0.09 |
| Average |
61.8 |
3.3 |
5.8 |
126.1 |
43.6 |
0.5 |
| Median |
65.1 |
2.5 |
4.4 |
126.2 |
26.8 |
0.5 |
| Deviation |
5.5 |
2.9 |
5.1 |
0.1 |
44.3 |
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)
| 
