Database: dscovr_data
Event ID: 20172430055
Observation time: 08/31/2017 243.03889 0055 [UT]
|
|
General
Information (About, Top)
| Year |
2017 |
| Fractional day of year |
243.038889 |
| Arrival time of shock [seconds of day] |
3360.0 ± 200.0 |
| Shock type |
FF |
| Electron data availability |
0 |
| X GSE location of spacecraft [Re] |
242.173 |
| Y GSE location of spacecraft [Re] |
-32.260 |
| Z GSE location of spacecraft [Re] |
-16.689 |
| Upstream plasma points selected for analysis |
0011 |
| Upstream field points selected for analysis |
0011 |
| Downstream plasma points selected for analysis |
0009
|
| Downstream field points selected for analysis |
0009 |
| Minimum chisq/dof for RH8,RH9,RH10 |
7.63, 13.69, 13.87 |
Event added to database
|
Wed Oct 25 11:26:06 2017
|
Event last processed
|
Wed Oct 25 11:58:47 2017
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
272.879 ± 2869.874
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-346.2 ± 1.2 |
-370.3 ± 3.5 |
| Vy GSE [km/s] |
0.2 ± 1.4 |
-22.9 ± 1.2 |
| Vz GSE [km/s] |
6.2 ± 1.0 |
24.2 ± 3.5 |
| Wi [km/s] |
13.7 ± 0.2 |
18.1 ± 0.8 |
| We [km/s] |
431.7 ± 7.5 |
573.8 ± 26.4 |
| Ni [n/cc] |
7.5 ± 0.2 |
13.8 ± 0.7 |
| Bx GSE [nT] |
3.7 ± 0.1 |
5.2 ± 0.8 |
| By GSE [nT] |
-2.0 ± 0.2 |
-5.1 ± 0.6 |
| Bz GSE [nT] |
0.0 ± 0.1 |
1.1 ± 0.4 |
Plasma Beta
|
0.161 ± 0.162
|
0.175 ± 0.181
|
Sound Speed [km/s]
|
17.62 ± 0.31
|
23.42 ± 1.08
|
Alfven Speed [km/s]
|
34.03 ± 1.01
|
43.50 ± 3.01
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.882 ± 0.102 |
-0.277 ± 0.203 |
0.382 ± 0.362 |
22.43 ± 12.52 |
197.42 ± 13.11 |
| VC |
-0.632 ± 0.056 |
-0.613 ± 0.057 |
0.475 ± 0.435 |
28.33 ± 5.98 |
224.12 ± 4.10 |
| MX1 |
-0.875 ± 0.088 |
-0.301 ± 0.215 |
0.380 ± 0.360 |
22.32 ± 7.58 |
198.96 ± 14.04 |
| MX2 |
-0.873 ± 0.088 |
-0.300 ± 0.217 |
0.384 ± 0.364 |
22.59 ± 7.44 |
198.94 ± 14.21 |
| MX3 |
-0.871 ± 0.090 |
-0.298 ± 0.220 |
0.390 ± 0.369 |
22.96 ± 7.57 |
198.89 ± 14.44 |
| RH08 |
0.024 ± 0.010 |
0.359 ± 0.001 |
0.933 ± 0.433 |
68.90 ± 0.00 |
86.24 ± 1.59 |
| RH09 |
-0.994 ± 0.008 |
-0.061 ± 0.066 |
0.095 ± 0.095 |
5.45 ± 3.99 |
183.51 ± 3.81 |
| RH10 |
-0.994 ± 0.008 |
-0.061 ± 0.067 |
0.095 ± 0.095 |
5.45 ± 3.99 |
183.51 ± 3.85 |
| Average |
-0.762 |
-0.194 |
0.392 |
24.805 |
183.949 |
| Median |
-0.873 |
-0.277 |
0.384 |
22.589 |
198.891 |
| Deviation |
0.337 |
0.282 |
0.261 |
19.735 |
41.431 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
49.9 ± 2.0 |
384.5 ± 1.0 |
1.87 ± 0.10 |
| VC |
74.6 ± 2.0 |
305.1 ± 0.9 |
1.87 ± 0.10 |
| MX1 |
51.2 ± 2.0 |
382.8 ± 1.0 |
1.87 ± 0.10 |
| MX2 |
51.2 ± 2.0 |
382.3 ± 1.0 |
1.87 ± 0.10 |
| MX3 |
51.3 ± 2.0 |
381.6 ± 1.0 |
1.87 ± 0.10 |
| RH08 |
81.4 ± 1.2 |
17.5 ± 0.8 |
1.87 ± 0.10 |
| RH09 |
32.3 ± 1.9 |
405.8 ± 1.0 |
1.87 ± 0.10 |
| RH10 |
32.3 ± 1.9 |
405.8 ± 9.9 |
1.87 ± 0.10 |
| Average |
53.0 |
333.2 |
1.87 |
| Median |
51.2 |
382.8 |
1.87 |
| Deviation |
17.5 |
131.4 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
76.9 ± 0.8 |
10.5 ± 0.2 |
21.9 ± 0.6 |
36.9 ± 0.9 |
7.34 ± 0.15 |
2.09 ± 0.06 |
| VC |
83.6 ± 0.9 |
4.2 ± 0.1 |
9.0 ± 0.3 |
38.1 ± 0.9 |
20.05 ± 0.43 |
2.20 ± 0.07 |
| MX1 |
77.6 ± 0.8 |
10.2 ± 0.1 |
21.3 ± 0.6 |
36.9 ± 0.9 |
7.63 ± 0.15 |
2.10 ± 0.06 |
| MX2 |
77.7 ± 0.8 |
10.2 ± 0.1 |
21.3 ± 0.6 |
37.0 ± 0.9 |
7.65 ± 0.15 |
2.10 ± 0.06 |
| MX3 |
77.7 ± 0.8 |
10.1 ± 0.1 |
21.3 ± 0.6 |
37.0 ± 0.9 |
7.67 ± 0.15 |
2.10 ± 0.06 |
| RH8 |
19.7 ± 0.9 |
2.3 ± 0.0 |
5.1 ± 0.2 |
38.3 ± 0.9 |
8.39 ± 0.35 |
0.52 ± 0.03 |
| RH9 |
61.3 ± 1.1 |
14.2 ± 0.2 |
28.8 ± 0.9 |
35.6 ± 0.9 |
4.30 ± 0.11 |
1.72 ± 0.05 |
| RH10 |
61.3 ± 1.1 |
14.2 ± 0.2 |
28.8 ± 0.9 |
35.6 ± 0.9 |
4.30 ± 0.11 |
1.72 ± 0.05 |
| Average |
67.0 |
9.5 |
19.7 |
36.9 |
8.4 |
1.8 |
| Median |
77.6 |
10.2 |
21.3 |
37.0 |
7.6 |
2.1 |
| Deviation |
20.7 |
4.3 |
8.5 |
1.0 |
5.0 |
0.6 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
42.4 ± 3.1 |
13.8 ± 0.6 |
28.0 ± 1.9 |
47.4 ± 2.9 |
3.06 ± 0.22 |
0.90 ± 0.09 |
| VC |
45.6 ± 2.5 |
5.5 ± 0.2 |
11.5 ± 0.8 |
49.1 ± 3.0 |
8.31 ± 0.51 |
0.93 ± 0.08 |
| MX1 |
42.7 ± 3.1 |
13.4 ± 0.6 |
27.3 ± 1.9 |
47.6 ± 2.9 |
3.18 ± 0.23 |
0.90 ± 0.09 |
| MX2 |
42.8 ± 3.1 |
13.4 ± 0.6 |
27.2 ± 1.9 |
47.6 ± 2.9 |
3.19 ± 0.23 |
0.90 ± 0.09 |
| MX3 |
42.8 ± 3.1 |
13.4 ± 0.6 |
27.2 ± 1.9 |
47.6 ± 2.9 |
3.20 ± 0.23 |
0.90 ± 0.09 |
| RH8 |
11.8 ± 3.6 |
3.1 ± 0.1 |
6.5 ± 0.5 |
49.3 ± 3.0 |
3.82 ± 1.14 |
0.24 ± 0.07 |
| RH9 |
34.2 ± 3.5 |
18.8 ± 0.9 |
36.8 ± 2.5 |
45.7 ± 3.0 |
1.82 ± 0.18 |
0.75 ± 0.10 |
| RH10 |
34.2 ± 3.5 |
18.8 ± 0.9 |
36.8 ± 2.5 |
45.7 ± 3.0 |
1.82 ± 0.18 |
0.75 ± 0.10 |
| Average |
37.1 |
12.5 |
25.2 |
47.5 |
3.6 |
0.8 |
| Median |
42.7 |
13.4 |
27.3 |
47.6 |
3.2 |
0.9 |
| Deviation |
11.0 |
5.6 |
10.8 |
1.3 |
2.0 |
0.2 |
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)
| 
