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| author | wukong <wukong@longaeva> | 2018-06-13 21:41:39 -0700 |
|---|---|---|
| committer | wukong <wukong@longaeva> | 2018-06-13 21:41:39 -0700 |
| commit | 8875b420a873a360a9484778b487394add318a5e (patch) | |
| tree | d357816354c5d9d4bc3b1db5c43ceda7933b5e3f /sample.desc.txt | |
| parent | 6bb6be845b6099550e0a530217633e30522093ad (diff) | |
added shebang, replaced if-elses with shortcut notation, ported online mean and variance calc to mean.awk
Diffstat (limited to '')
| -rw-r--r-- | sample.desc.txt | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/sample.desc.txt b/sample.desc.txt new file mode 100644 index 0000000..d7c1c67 --- /dev/null +++ b/sample.desc.txt @@ -0,0 +1,78 @@ +File name: sample.descr.txt
+Author: Paul R. gazis
+Date: 7-APR-2006
+
+This file contains a description of the contents of sample.bin, a
+binary file of sample data for demonstration of the 'viewpoints'
+analysis package, along with a brief description of how that data
+can be used. This file contains a small subset of the Pioneer 10
+data set. The Pioneer 10 and 11 spacecraft, launched in 1972 and
+1973, respectively, were the first spacecraft to encounter
+Jupiter and Saturn, and in 1983, Pioneer 10 became the first
+man-made object to leave the solar system. The full data Pioneer
+data set is available from the National Space Science Data Center
+(NSSDC)
+
+http://nssdc.gsfc.nasa.gov/
+
+from their FTP site at
+
+ftp://nssdcftp.gsfc.nasa.gov/spacecraft_data/
+
+These data consist of a set of times, trajectory information, and
+hourly averaged solar wind speed, density, temperatures, and flow
+angles described below. They encompass the range of helioncentric
+distances between 1 and 17 AU when Pioneer 10 began to observe
+quasi-periodic co-rotating inbteraction regions associated with
+the interaction of low- and high-speed streams in the solar wind.
+Within these regions, solar wind speed is moderate (of the order
+400-500 km/s) while solar wind densoty and temperature are
+elevated. This is readily apparent if one compares scatter plots
+of speed, density, and temperature observed in 1972 and early 1973,
+when the spacecraft was comparatively close to the Sun, with
+scatter plots at later times and latger distances.
+
+NOTE 1: To compare solar wind densities and temperatures observed
+at different heliocentric distances, it is necessary to account for
+evolutionary effects as the solar wind is convected outward from
+the Sun. This is done by scaling the density, N, by heliocentric
+distance squared, to account for simple radial expansion and by
+scaling the temperature, T, by R^-0.6 to account for the
+empirically observed power-law dependance, which is significantly
+hotter than would be expected for simple adiabatic cooling.
+
+NOTE 2: While 'viewpoints' was NOT originally designed to display
+time series data, it can be used for this purpose.
+
+
+! File name: sample.txt - Hourly averaged Pioneer 10 solar wind parameters, 1972-1978
+! Field Parameter Comments
+! 1 Year - Year of measurement (Spacecraft ephemeris time at Pioneer 10)
+! 2 days-1950 - Time of measurement in days since day 1 of 1950
+! 3 R(AU) - Heliocentric distance of spacecraft in AU
+! 4 Phi - Heliographic longitude of spacecraft
+! 5 Theta - Heliographic latitude of spacecraft
+! 6 V(km/s) - Solar wind speed (km/s)
+! 7 NR2(#/cc) - Solar wind proton density multipled by R(AU)^2 to account for radial expansion
+! 8 TR-.6(K) - Solar wind proton temperature multipled by R(AU)^(-0.6) to account for radial expansion
+! 9 E/W - Solar wind E/W flow angle (+ = in the direction of planetary rotation)
+! 10 N/S - Solar wind N/S flow angle (+ = north of the ecliptic)
+! 11 N(#/cc) - Unmodified solar wind proton density
+! 12 T(K) - Unmodified solar wind proton temperature
+ Year days-1950 R_AU Phi Theta V(km/s) NR2(#/cc) TR-.6(K) E/W N/S N(#/cc) T(K)
+ 1973 8401.0000 3.35613 -66.357 -1.558 323.378 9.230828 4512.5 0.871 -1.960 0.819527 9330.9
+ 1973 8401.0417 3.35641 -66.353 -1.558 324.071 9.638469 5078.6 1.611 -2.156 0.855575 10502.0
+ 1973 8401.0833 3.35669 -66.348 -1.558 318.470 11.603700 5170.5 1.131 -2.431 1.029850 10692.6
+ 1973 8401.1250 3.35697 -66.343 -1.558 320.427 18.037112 4589.0 2.875 -3.245 1.600560 9490.5
+ 1973 8401.2083 3.35753 -66.334 -1.557 323.891 17.943892 6167.9 3.389 -4.430 1.591756 12757.1
+ 1973 8401.2500 3.35781 -66.329 -1.557 314.161 21.142727 6616.6 1.903 -4.754 1.875203 13685.7
+ 1973 8401.2917 3.35809 -66.324 -1.557 313.777 21.553091 7349.5 2.516 -4.421 1.911280 15202.4
+ 1973 8401.3333 3.35837 -66.320 -1.557 315.775 20.507291 6770.0 3.275 -3.545 1.818237 14004.4
+ 1973 8401.3750 3.35865 -66.315 -1.557 314.674 16.684952 5431.6 3.303 -3.288 1.479090 11236.4
+ 1973 8401.4167 3.35893 -66.310 -1.557 309.441 17.818612 5698.4 2.730 -3.644 1.579323 11789.0
+ 1973 8401.5000 3.35949 -66.301 -1.557 307.265 13.367473 5107.7 1.608 -2.427 1.184408 10568.0
+ 1973 8401.5417 3.35978 -66.296 -1.557 307.449 11.578219 4689.9 1.086 -2.623 1.025702 9704.0
+ 1973 8401.5833 3.36006 -66.291 -1.556 307.415 11.215317 4828.1 1.104 -2.634 0.993387 9990.5
+ 1973 8401.6250 3.36034 -66.286 -1.556 307.485 11.281679 4760.3 1.111 -2.637 0.999098 9850.7
+ 1973 8401.6667 3.36062 -66.282 -1.556 308.293 12.167288 4800.8 1.723 -2.613 1.077347 9934.9
+
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