Database: dscovr_data
Event ID: 20171990850
Observation time: 07/18/2017 199.36874 0850 [UT]
|
|
General
Information (About, Top)
| Year |
2017 |
| Fractional day of year |
199.368738 |
| Arrival time of shock [seconds of day] |
31859.0 ± 60.0 |
| Shock type |
FR |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
247.594 |
| Y GSE location of spacecraft [Re] |
21.492 |
| Z GSE location of spacecraft [Re] |
-26.911 |
| Upstream plasma points selected for analysis |
0008 |
| Upstream field points selected for analysis |
0008 |
| Downstream plasma points selected for analysis |
0007
|
| Downstream field points selected for analysis |
0007 |
| Minimum chisq/dof for RH8,RH9,RH10 |
2.16, 3.58, 3.68 |
Event added to database
|
Wed Oct 25 10:35:07 2017
|
Event last processed
|
Wed Oct 25 11:55:56 2017
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
46.437 ± 7.916
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-522.7 ± 9.7 |
-602.0 ± 7.8 |
| Vy GSE [km/s] |
145.0 ± 20.1 |
56.5 ± 35.0 |
| Vz GSE [km/s] |
6.9 ± 20.4 |
-138.0 ± 73.6 |
| Wi [km/s] |
134.1 ± 17.8 |
92.7 ± 15.7 |
| We [km/s] |
4241.7 ± 562.4 |
2931.8 ± 496.5 |
| Ni [n/cc] |
2.4 ± 0.3 |
1.7 ± 0.3 |
| Bx GSE [nT] |
0.6 ± 0.9 |
0.9 ± 1.5 |
| By GSE [nT] |
-6.3 ± 1.0 |
-2.4 ± 0.5 |
| Bz GSE [nT] |
1.1 ± 3.0 |
-0.9 ± 2.1 |
Plasma Beta
|
1.868 ± 2.076
|
2.415 ± 2.366
|
Sound Speed [km/s]
|
173.17 ± 22.96
|
119.69 ± 20.27
|
Alfven Speed [km/s]
|
100.35 ± 6.17
|
62.34 ± 6.43
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.385 ± 0.850 |
0.861 ± 0.421 |
0.331 ± 0.318 |
19.34 ± 35.01 |
114.09 ± 56.27 |
| VC |
0.477 ± 0.169 |
0.486 ± 0.171 |
0.732 ± 0.560 |
47.08 ± 15.39 |
45.57 ± 11.62 |
| MX1 |
0.773 ± 0.725 |
0.504 ± 1.071 |
0.385 ± 0.365 |
22.64 ± 37.74 |
33.13 ± 78.70 |
| MX2 |
-0.582 ± 0.973 |
0.780 ± 0.730 |
0.229 ± 0.225 |
13.22 ± 30.90 |
126.72 ± 71.21 |
| MX3 |
0.722 ± 0.549 |
0.425 ± 0.802 |
0.545 ± 0.483 |
33.03 ± 36.42 |
30.48 ± 62.09 |
| RH08 |
-0.918 ± 0.011 |
0.344 ± 0.029 |
0.196 ± 0.193 |
11.28 ± 1.04 |
159.44 ± 1.82 |
| RH09 |
-0.914 ± 0.029 |
0.361 ± 0.066 |
0.184 ± 0.182 |
10.62 ± 3.95 |
158.44 ± 4.13 |
| RH10 |
-0.914 ± 0.029 |
0.361 ± 0.066 |
0.184 ± 0.182 |
10.62 ± 3.98 |
158.44 ± 4.12 |
| Average |
-0.218 |
0.516 |
0.348 |
20.980 |
103.290 |
| Median |
-0.385 |
0.486 |
0.331 |
19.336 |
126.723 |
| Deviation |
0.753 |
0.198 |
0.200 |
13.096 |
57.887 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
38.9 ± 19.4 |
527.3 ± 132.9 |
0.70 ± 0.11 |
| VC |
72.7 ± 24.3 |
199.1 ± 216.5 |
0.70 ± 0.11 |
| MX1 |
70.3 ± 17.3 |
-5.6 ± 252.9 |
0.70 ± 0.11 |
| MX2 |
44.2 ± 13.0 |
533.7 ± 80.1 |
0.70 ± 0.11 |
| MX3 |
75.9 ± 20.0 |
38.2 ± 235.6 |
0.70 ± 0.11 |
| RH08 |
69.6 ± 7.0 |
517.2 ± 74.1 |
0.70 ± 0.11 |
| RH09 |
68.5 ± 6.9 |
516.2 ± 70.6 |
0.70 ± 0.11 |
| RH10 |
68.5 ± 6.9 |
516.2 ± 523.5 |
0.70 ± 0.11 |
| Average |
63.6 |
355.3 |
0.70 |
| Median |
69.6 |
516.2 |
0.70 |
| Deviation |
13.9 |
237.4 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
198.8 ± 11.7 |
71.8 ± 1.8 |
78.1 ± 4.8 |
187.4 ± 17.8 |
2.77 ± 0.13 |
1.07 ± 0.11 |
| VC |
372.7 ± 11.9 |
25.7 ± 0.6 |
29.8 ± 1.8 |
199.1 ± 16.5 |
14.50 ± 0.36 |
1.88 ± 0.18 |
| MX1 |
322.5 ± 12.7 |
29.2 ± 0.7 |
33.8 ± 2.1 |
198.6 ± 16.5 |
11.03 ± 0.24 |
1.63 ± 0.13 |
| MX2 |
114.7 ± 10.2 |
65.2 ± 1.6 |
71.9 ± 4.4 |
189.8 ± 17.4 |
1.76 ± 0.14 |
0.61 ± 0.07 |
| MX3 |
350.4 ± 11.3 |
21.1 ± 0.5 |
24.5 ± 1.5 |
199.7 ± 16.4 |
16.63 ± 0.31 |
1.76 ± 0.15 |
| RH8 |
-14.1 ± 7.4 |
30.4 ± 0.7 |
35.1 ± 2.2 |
198.5 ± 16.5 |
-0.46 ± 0.25 |
-0.07 ± 0.04 |
| RH9 |
-15.3 ± 7.2 |
31.8 ± 0.7 |
36.7 ± 2.3 |
198.2 ± 16.5 |
-0.48 ± 0.23 |
-0.08 ± 0.04 |
| RH10 |
-15.3 ± 7.2 |
31.8 ± 0.7 |
36.7 ± 2.3 |
198.2 ± 16.5 |
-0.48 ± 0.23 |
-0.08 ± 0.04 |
| Average |
164.3 |
38.4 |
43.3 |
196.2 |
5.7 |
0.8 |
| Median |
198.8 |
31.8 |
36.7 |
198.5 |
2.8 |
1.1 |
| Deviation |
170.3 |
19.0 |
20.1 |
4.8 |
7.2 |
0.9 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
292.5 ± 43.9 |
45.2 ± 2.9 |
48.5 ± 5.0 |
127.7 ± 17.2 |
6.48 ± 0.88 |
2.36 ± 0.62 |
| VC |
559.7 ± 65.9 |
16.3 ± 0.8 |
18.5 ± 1.9 |
134.6 ± 15.8 |
34.37 ± 3.47 |
4.25 ± 0.94 |
| MX1 |
484.3 ± 44.1 |
18.5 ± 1.0 |
21.0 ± 2.2 |
134.3 ± 15.9 |
26.18 ± 2.15 |
3.68 ± 0.72 |
| MX2 |
170.8 ± 34.5 |
41.1 ± 2.5 |
44.7 ± 4.6 |
129.1 ± 16.8 |
4.15 ± 0.80 |
1.36 ± 0.42 |
| MX3 |
524.3 ± 52.8 |
13.3 ± 0.7 |
15.2 ± 1.6 |
134.9 ± 15.8 |
39.28 ± 3.43 |
3.96 ± 0.81 |
| RH8 |
-28.1 ± 17.5 |
19.2 ± 1.0 |
21.8 ± 2.2 |
134.2 ± 15.9 |
-1.48 ± 0.94 |
-0.20 ± 0.11 |
| RH9 |
-29.1 ± 17.3 |
20.2 ± 1.0 |
22.8 ± 2.4 |
134.1 ± 15.9 |
-1.46 ± 0.89 |
-0.21 ± 0.11 |
| RH10 |
-29.1 ± 17.3 |
20.2 ± 1.0 |
22.8 ± 2.4 |
134.1 ± 15.9 |
-1.46 ± 0.89 |
-0.21 ± 0.11 |
| Average |
243.2 |
24.2 |
26.9 |
132.9 |
13.3 |
1.9 |
| Median |
292.5 |
20.2 |
22.8 |
134.2 |
6.5 |
2.4 |
| Deviation |
258.3 |
11.9 |
12.5 |
2.8 |
17.2 |
2.0 |
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)
| 
