Database: Ace Shock Analysis
Event ID: 19993451202
Observation time: 12/11/1999 345.50145 1202 [UT]
|
|
General
Information (About, Top)
| Year |
1999 |
| Fractional day of year |
345.501447 |
| Arrival time of shock [seconds of day] |
43325.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.035 |
| Y GSE location of spacecraft [Re] |
0.006 |
| Z GSE location of spacecraft [Re] |
-0.002 |
| Upstream plasma points selected for analysis |
0012 |
| Upstream field points selected for analysis |
0046 |
| Downstream plasma points selected for analysis |
0010
|
| Downstream field points selected for analysis |
0040 |
| Minimum chisq/dof for RH8,RH9,RH10 |
5.02, 7.42, 7.60 |
Event added to database
|
Sat Apr 30 21:45:15 2005
|
Event last processed
|
Wed Oct 15 15:38:04 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.009 ± 0.001
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-440.2 ± 3.4 |
-473.8 ± 3.0 |
| Vy GSE [km/s] |
-0.7 ± 3.0 |
10.3 ± 5.7 |
| Vz GSE [km/s] |
-3.3 ± 3.2 |
-51.4 ± 3.3 |
| Wi [km/s] |
36.4 ± 1.0 |
47.0 ± 2.3 |
| We [km/s] |
1149.8 ± 30.1 |
1485.1 ± 71.7 |
| Ni [n/cc] |
3.2 ± 0.3 |
4.5 ± 0.2 |
| Bx GSE [nT] |
0.2 ± 0.5 |
3.3 ± 0.4 |
| By GSE [nT] |
-0.0 ± 0.4 |
-5.0 ± 0.3 |
| Bz GSE [nT] |
-3.6 ± 0.2 |
-2.0 ± 0.5 |
Plasma Beta
|
0.714 ± 0.740
|
0.544 ± 0.562
|
Sound Speed [km/s]
|
46.97 ± 1.26
|
60.74 ± 2.96
|
Alfven Speed [km/s]
|
43.67 ± 4.24
|
64.21 ± 3.16
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
0.122 ± 0.566 |
-0.572 ± 0.688 |
-0.811 ± 0.553 |
-54.19 ± 48.98 |
282.05 ± 54.83 |
| VC |
-0.569 ± 0.062 |
0.179 ± 0.092 |
-0.803 ± 0.556 |
-53.40 ± 4.13 |
162.55 ± 9.14 |
| MX1 |
-0.696 ± 0.907 |
-0.693 ± 0.911 |
0.186 ± 0.184 |
10.74 ± 66.70 |
224.86 ± 73.93 |
| MX2 |
-0.141 ± 0.071 |
-0.391 ± 0.071 |
-0.910 ± 0.475 |
-65.44 ± 4.49 |
250.16 ± 9.81 |
| MX3 |
-0.317 ± 0.081 |
-0.466 ± 0.080 |
-0.826 ± 0.548 |
-55.72 ± 5.53 |
235.81 ± 8.26 |
| RH08 |
-0.803 ± 0.020 |
-0.401 ± 0.029 |
0.441 ± 0.410 |
26.19 ± 2.00 |
206.57 ± 2.00 |
| RH09 |
-0.804 ± 0.035 |
-0.385 ± 0.047 |
0.453 ± 0.419 |
26.91 ± 3.92 |
205.57 ± 3.18 |
| RH10 |
-0.804 ± 0.035 |
-0.385 ± 0.047 |
0.453 ± 0.419 |
26.91 ± 3.88 |
205.57 ± 3.21 |
| Average |
-0.502 |
-0.389 |
-0.227 |
-17.252 |
221.643 |
| Median |
-0.569 |
-0.391 |
0.186 |
10.738 |
224.865 |
| Deviation |
0.352 |
0.255 |
0.659 |
43.166 |
35.673 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
34.9 ± 6.0 |
54.2 ± 40.0 |
1.38 ± 0.11 |
| VC |
40.9 ± 7.6 |
477.4 ± 63.2 |
1.38 ± 0.11 |
| MX1 |
77.3 ± 7.7 |
328.2 ± 16.6 |
1.38 ± 0.11 |
| MX2 |
26.0 ± 7.1 |
229.0 ± 52.6 |
1.38 ± 0.11 |
| MX3 |
36.3 ± 7.4 |
310.3 ± 52.2 |
1.38 ± 0.11 |
| RH08 |
61.0 ± 8.2 |
356.3 ± 14.6 |
1.38 ± 0.11 |
| RH09 |
60.2 ± 8.2 |
356.3 ± 14.7 |
1.38 ± 0.11 |
| RH10 |
60.2 ± 8.2 |
356.3 ± 14.7 |
1.38 ± 0.11 |
| Average |
49.6 |
308.5 |
1.38 |
| Median |
60.2 |
356.3 |
1.38 |
| Deviation |
17.5 |
123.5 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
104.9 ± 2.0 |
29.4 ± 1.4 |
35.8 ± 3.5 |
57.1 ± 2.3 |
3.58 ± 0.23 |
1.84 ± 0.10 |
| VC |
225.0 ± 3.3 |
26.4 ± 1.3 |
33.0 ± 3.2 |
58.5 ± 2.4 |
8.53 ± 0.48 |
3.85 ± 0.19 |
| MX1 |
21.1 ± 4.0 |
7.1 ± 0.3 |
9.6 ± 0.9 |
63.8 ± 2.7 |
3.01 ± 0.59 |
0.33 ± 0.06 |
| MX2 |
163.8 ± 2.5 |
33.6 ± 1.7 |
39.2 ± 3.8 |
54.7 ± 2.2 |
4.89 ± 0.30 |
3.00 ± 0.15 |
| MX3 |
168.0 ± 2.7 |
28.7 ± 1.4 |
35.2 ± 3.4 |
57.5 ± 2.4 |
5.87 ± 0.35 |
2.93 ± 0.15 |
| RH8 |
3.6 ± 3.9 |
16.0 ± 0.7 |
21.2 ± 2.1 |
62.2 ± 2.6 |
0.23 ± 0.24 |
0.06 ± 0.06 |
| RH9 |
2.9 ± 3.9 |
16.4 ± 0.8 |
21.7 ± 2.1 |
62.1 ± 2.6 |
0.18 ± 0.23 |
0.05 ± 0.06 |
| RH10 |
2.9 ± 3.9 |
16.4 ± 0.8 |
21.7 ± 2.1 |
62.1 ± 2.6 |
0.18 ± 0.23 |
0.05 ± 0.06 |
| Average |
86.5 |
21.7 |
27.2 |
59.8 |
3.3 |
1.5 |
| Median |
104.9 |
26.4 |
33.0 |
62.1 |
3.6 |
1.8 |
| Deviation |
90.4 |
9.1 |
10.2 |
3.2 |
3.1 |
1.6 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
76.2 ± 3.9 |
40.6 ± 1.0 |
52.6 ± 2.6 |
78.6 ± 1.8 |
1.88 ± 0.11 |
0.97 ± 0.05 |
| VC |
165.1 ± 4.2 |
36.5 ± 0.9 |
48.6 ± 2.4 |
80.5 ± 1.9 |
4.52 ± 0.15 |
2.05 ± 0.08 |
| MX1 |
14.6 ± 2.7 |
9.7 ± 0.2 |
14.1 ± 0.7 |
87.9 ± 2.0 |
1.49 ± 0.27 |
0.17 ± 0.03 |
| MX2 |
119.5 ± 3.1 |
46.5 ± 1.2 |
57.7 ± 2.8 |
75.3 ± 1.8 |
2.57 ± 0.09 |
1.59 ± 0.06 |
| MX3 |
122.6 ± 2.9 |
39.7 ± 1.0 |
51.8 ± 2.5 |
79.0 ± 1.8 |
3.09 ± 0.10 |
1.55 ± 0.05 |
| RH8 |
2.5 ± 1.9 |
22.1 ± 0.5 |
31.2 ± 1.5 |
85.7 ± 2.0 |
0.11 ± 0.09 |
0.03 ± 0.02 |
| RH9 |
2.1 ± 1.9 |
22.6 ± 0.5 |
31.9 ± 1.6 |
85.5 ± 2.0 |
0.09 ± 0.08 |
0.02 ± 0.02 |
| RH10 |
2.1 ± 1.9 |
22.6 ± 0.5 |
31.9 ± 1.6 |
85.5 ± 2.0 |
0.09 ± 0.08 |
0.02 ± 0.02 |
| Average |
63.1 |
30.1 |
40.0 |
82.3 |
1.7 |
0.8 |
| Median |
76.2 |
36.5 |
48.6 |
85.5 |
1.9 |
1.0 |
| Deviation |
66.3 |
12.6 |
14.9 |
4.5 |
1.6 |
0.8 |
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)
| 
