Interplanetary shock data base

This interplanetary shock data base was compiled with Wind and Advanced Composition Explorer (ACE) observations collected at the Lagrangian point L1. The list ranges from January 1995 to May 2023 with 603 events. There are 590 events up to December 2022. Many shock parameters are included, such as shock impact angle, shock speed, Mach numbers, compression ratios, and IMF (interplanetary magnetic field) Bz in the upstream and downstream regions. The list also brings geomagnetic activity information such as minimum SMR values in a time interval of 2 hours after shock impact.

There are three files: (i) full_shock_list_2023.txt, a text file with  ev603ents; (ii) full_shock_params.cdf, a cdf file with detailed information about each specific shock events; and (iii) read_shock.py, a file that contains a short python routine to read information about a specific shock event. The SpacePy package (https://spacepy.github.io/spacepy.html#:~:text=SpacePy%3A%20Space%20Science%20Tools%20for,at%20the%20space%20science%20community.) is required to extract shock information from the cdf file.

Example (shock number 142, 26 June 2000):

from read_shock import read_shock_cdf

read_shock_cdf(142)

------------------------------------------------------------------------------------
sn     date     UTS  UTM
142 2000 06 23 1226  1226
Spacecraft is ac
Position: X = 239.9 Re; Y =  36.7 Re; Z =  -0.7 Re

Time windows
Upstream:    5 to 10 minutes before shock
Downstream:  5 to 10 minutes after shock

Solar wind plasma and IMF
                             Bx        By      Bz        Vx              Vy       Vz          N           T
Upstream        5.448  -3.946  -4.568   -399.958  18.948 -14.969     6.941    99731.6
Downstream  14.317  -1.766 -16.125  -508.734  37.628 -117.578 17.429  224496.1

Computed parameters
 dp1   dp2   Xdp   Xb    Xn     vs_rh    vA      cs
1.864 7.989 4.286 2.661 2.511 604.778  67.317  52.384

Minimum SMR index in the 2-hour window following shock impact:  -9.60 nT

        nx      ny     nz    thxn    phiyn    thbn     vs       vfms    Ma     Ms
MC    -0.323 -0.944  0.070 108.831  175.779  78.309  127.332   85.704  0.255  0.200
MX1   -0.796  0.191 -0.575 142.729  -71.590  72.348  578.268   86.195  3.681  2.874
MX2   -0.798  0.133 -0.587 142.962  -77.223  74.365  579.175   86.010  3.693  2.890
MX3   -0.798  0.107 -0.592 142.980  -79.739  75.273  578.920   85.933  3.694  2.894
VC    -0.722  0.124 -0.681 136.205  -79.682  80.717  551.670   85.556  3.720  2.927

Type cdf['SHOCK'].attrs for a description of all shock variables and parameters.

More details about this list and methods for shock normal calculations can be found in:

Oliveira, D. M. (2023). Interplanetary Shock Data Base. Frontiers in    Astronomy and Space Science. (Under review)