Database: dscovr_data
Event ID: 20172430442
Observation time: 08/31/2017 243.19653 0442 [UT]
|
|
General
Information (About, Top)
| Year |
2017 |
| Fractional day of year |
243.196528 |
| Arrival time of shock [seconds of day] |
16980.0 ± 90.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
242.082 |
| Y GSE location of spacecraft [Re] |
-32.400 |
| Z GSE location of spacecraft [Re] |
-16.565 |
| Upstream plasma points selected for analysis |
0006 |
| Upstream field points selected for analysis |
0006 |
| Downstream plasma points selected for analysis |
0007
|
| Downstream field points selected for analysis |
0007 |
| Minimum chisq/dof for RH8,RH9,RH10 |
8.21, 22.26, 22.99 |
Event added to database
|
Wed Oct 25 11:28:21 2017
|
Event last processed
|
Wed Oct 25 12:01:05 2017
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
55.529 ± 0.325
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-361.9 ± 1.6 |
-394.2 ± 2.4 |
| Vy GSE [km/s] |
-37.5 ± 2.2 |
-54.7 ± 2.5 |
| Vz GSE [km/s] |
-14.6 ± 3.0 |
-5.4 ± 4.1 |
| Wi [km/s] |
21.2 ± 0.4 |
29.0 ± 0.2 |
| We [km/s] |
671.5 ± 11.2 |
916.5 ± 7.6 |
| Ni [n/cc] |
20.9 ± 1.1 |
38.8 ± 1.5 |
| Bx GSE [nT] |
4.4 ± 0.5 |
6.8 ± 1.0 |
| By GSE [nT] |
-5.5 ± 0.6 |
-9.1 ± 0.4 |
| Bz GSE [nT] |
-3.3 ± 1.3 |
-0.6 ± 1.4 |
Plasma Beta
|
0.323 ± 0.323
|
0.529 ± 0.545
|
Sound Speed [km/s]
|
27.42 ± 0.46
|
37.42 ± 0.31
|
Alfven Speed [km/s]
|
37.63 ± 2.57
|
40.17 ± 3.19
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.687 ± 0.455 |
0.379 ± 0.521 |
0.619 ± 0.524 |
38.27 ± 39.07 |
151.11 ± 39.99 |
| VC |
-0.856 ± 0.045 |
-0.455 ± 0.066 |
0.246 ± 0.241 |
14.24 ± 7.77 |
207.97 ± 4.29 |
| MX1 |
-0.913 ± 0.110 |
-0.261 ± 0.322 |
0.315 ± 0.304 |
18.38 ± 11.45 |
195.93 ± 20.18 |
| MX2 |
-0.899 ± 0.079 |
-0.364 ± 0.182 |
0.242 ± 0.237 |
14.02 ± 7.14 |
202.04 ± 11.55 |
| MX3 |
-0.890 ± 0.065 |
-0.410 ± 0.128 |
0.199 ± 0.196 |
11.48 ± 8.58 |
204.71 ± 8.20 |
| RH08 |
-0.983 ± 0.003 |
-0.183 ± 0.014 |
0.028 ± 0.028 |
1.60 ± 0.99 |
190.53 ± 0.80 |
| RH09 |
-0.972 ± 0.016 |
-0.128 ± 0.071 |
-0.196 ± 0.193 |
-11.28 ± 3.96 |
187.52 ± 4.16 |
| RH10 |
-0.972 ± 0.016 |
-0.128 ± 0.071 |
-0.196 ± 0.193 |
-11.28 ± 3.96 |
187.52 ± 4.16 |
| Average |
-0.897 |
-0.194 |
0.157 |
9.431 |
190.916 |
| Median |
-0.899 |
-0.183 |
0.242 |
14.018 |
195.934 |
| Deviation |
0.096 |
0.263 |
0.273 |
16.385 |
17.877 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
23.9 ± 8.0 |
272.7 ± 1.3 |
1.85 ± 0.16 |
| VC |
74.5 ± 3.7 |
406.1 ± 1.0 |
1.85 ± 0.16 |
| MX1 |
62.5 ± 3.6 |
415.2 ± 1.1 |
1.85 ± 0.16 |
| MX2 |
69.4 ± 3.4 |
417.7 ± 1.0 |
1.85 ± 0.16 |
| MX3 |
72.7 ± 3.2 |
416.6 ± 1.0 |
1.85 ± 0.16 |
| RH08 |
64.1 ± 2.6 |
438.8 ± 1.0 |
1.85 ± 0.16 |
| RH09 |
67.9 ± 4.1 |
429.2 ± 1.1 |
1.85 ± 0.16 |
| RH10 |
67.9 ± 4.1 |
429.2 ± 6.8 |
1.85 ± 0.16 |
| Average |
62.9 |
403.2 |
1.85 |
| Median |
67.9 |
417.7 |
1.85 |
| Deviation |
16.2 |
53.7 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
47.3 ± 1.8 |
23.4 ± 0.3 |
34.4 ± 2.4 |
40.3 ± 2.1 |
2.02 ± 0.08 |
1.18 ± 0.10 |
| VC |
82.8 ± 0.8 |
5.9 ± 0.1 |
10.0 ± 0.7 |
46.2 ± 1.9 |
13.94 ± 0.29 |
1.79 ± 0.07 |
| MX1 |
79.8 ± 0.8 |
10.5 ± 0.2 |
17.4 ± 1.2 |
45.4 ± 1.9 |
7.61 ± 0.19 |
1.76 ± 0.08 |
| MX2 |
82.1 ± 0.8 |
7.9 ± 0.1 |
13.3 ± 0.9 |
45.9 ± 1.9 |
10.39 ± 0.24 |
1.79 ± 0.08 |
| MX3 |
82.0 ± 0.8 |
6.6 ± 0.1 |
11.2 ± 0.8 |
46.1 ± 1.9 |
12.34 ± 0.28 |
1.78 ± 0.08 |
| RH8 |
76.7 ± 1.3 |
9.9 ± 0.2 |
16.4 ± 1.1 |
45.5 ± 1.9 |
7.77 ± 0.25 |
1.69 ± 0.09 |
| RH9 |
69.7 ± 1.8 |
8.5 ± 0.2 |
14.2 ± 1.0 |
45.8 ± 1.9 |
8.25 ± 0.33 |
1.52 ± 0.09 |
| RH10 |
69.7 ± 1.8 |
8.5 ± 0.2 |
14.2 ± 1.0 |
45.8 ± 1.9 |
8.25 ± 0.33 |
1.52 ± 0.09 |
| Average |
73.8 |
10.1 |
16.4 |
45.1 |
8.8 |
1.6 |
| Median |
79.8 |
8.5 |
14.2 |
45.8 |
8.2 |
1.8 |
| Deviation |
11.9 |
5.6 |
7.7 |
2.0 |
3.6 |
0.2 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
25.9 ± 2.8 |
29.7 ± 0.9 |
36.7 ± 2.9 |
46.2 ± 2.1 |
0.87 ± 0.11 |
0.56 ± 0.08 |
| VC |
45.1 ± 2.6 |
7.3 ± 0.3 |
10.7 ± 0.9 |
54.4 ± 2.3 |
6.14 ± 0.22 |
0.83 ± 0.03 |
| MX1 |
43.0 ± 2.3 |
13.0 ± 0.5 |
18.6 ± 1.5 |
53.4 ± 2.2 |
3.30 ± 0.13 |
0.80 ± 0.03 |
| MX2 |
44.6 ± 2.5 |
9.8 ± 0.3 |
14.1 ± 1.1 |
54.1 ± 2.3 |
4.56 ± 0.17 |
0.82 ± 0.03 |
| MX3 |
44.4 ± 2.6 |
8.2 ± 0.3 |
11.9 ± 0.9 |
54.3 ± 2.3 |
5.40 ± 0.20 |
0.82 ± 0.03 |
| RH8 |
41.6 ± 2.7 |
12.2 ± 0.4 |
17.5 ± 1.4 |
53.6 ± 2.2 |
3.40 ± 0.13 |
0.78 ± 0.03 |
| RH9 |
37.9 ± 3.1 |
10.5 ± 0.4 |
15.1 ± 1.2 |
53.9 ± 2.2 |
3.62 ± 0.18 |
0.70 ± 0.03 |
| RH10 |
37.9 ± 3.1 |
10.5 ± 0.4 |
15.1 ± 1.2 |
53.9 ± 2.2 |
3.62 ± 0.18 |
0.70 ± 0.03 |
| Average |
40.0 |
12.6 |
17.5 |
53.0 |
3.9 |
0.8 |
| Median |
43.0 |
10.5 |
15.1 |
53.9 |
3.6 |
0.8 |
| Deviation |
6.4 |
7.1 |
8.2 |
2.7 |
1.6 |
0.1 |
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)
| 
