[IGSSTATION-8929] Possible co-seismic displacements: BNEU, CMUM, CUSV, CUUT, LHAZ, NIUM, NKAY, PBR4, SHLG, TOAY, TONG

[igs-rf at ign.fr]

# Author : Paul Rebischung
# Contact : igs-rf at ign.fr
# Subject : Possible co-seismic displacements: BNEU, CMUM, CUSV, CUUT, LHAZ, NIUM, NKAY, PBR4, SHLG, TOAY, TONG
# 
# This is a notification that recent earthquake(s) may have induced noticeable displacements of one or more IGS stations.
#
# This message and the table below were generated automatically based on the following procedure:
# * The Global Centroid-Moment-Tensor (CMT) catalog (https://www.globalcmt.org/) is scanned every day for new earthquakes.
# * For every new earthquake, the width, length and slip of the rupture are estimated from:
#    - Yen & Ma (2012; https://doi.org/10.1785/0120100046)'s scaling law if the earthquake magnitude is less than 7.6;
#    - Mai & Beroza (2000; https://doi.org/10.1785/0119990126)'s scaling law it the earthquake magnitude is larger.
#    (See justification for these choices in Métivier et al., 2014; https://doi.org/10.1002/2014JB011280.)
# * For every new earthquake, based on its estimated CMT and rupture parameters, co-seismic displacements are calculated
#   at all IGS stations using Okada (1985; https://doi.org/10.1785/BSSA0750041135)'s approach. Given that the CMT inversion
#   from seismic waves gives rise to two possible solutions for the rupture plane, two possible co-seismic displacements
#   are calculated for every station and earthquake.
# * If any calculated 3D co-seismic displacement of an IGS station exceeds 1 mm, it is included in the table below.
#
# Warning : The co-seismic displacements thus calculated rely on several coarse approximations. They should not be used as
#           estimates of the actual co-seismic displacements, but only as rough orders of magnitude.
# 
# The column "RF?" in the table below indicates whether each station is part of the current IGS reference frame (IGb20),
# hence might need to stop being used as a reference frame station after the earthquake.
# 
# The successive co-seismic displacements thus calculated are compiled in a cumulative table available at:
# ftp://igs-rf.ign.fr/pub/coseismic/IGS_coseismic.dat
# 
#__________station_________   ___________________________earthquake_____________________________   dist_   _____displacement1_____   _____displacement2_____
#sta_ lon[deg] lat[deg] RF?   date_______________ Mw_ location________________ lon[deg] lat[deg]   d[km]   dE[mm]_ dN[mm]_ dH[mm]_   dE[mm]_ dN[mm]_ dH[mm]_
#-----------------------------------------------------------------------------------------------------------------------------------------------------------
 BNEU  101.917   21.644 No    2025-03-28 06:20:54 7.7 Myanmar                    95.920   22.010     620       1.3    -1.9    -0.6       1.4    -1.9    -0.6
 CMUM   98.932   18.761 No    2025-03-28 06:20:54 7.7 Myanmar                    95.920   22.010     479       6.0    -5.2    -2.8       5.9    -5.1    -2.8
 CUSV  100.534   13.736 Yes   2025-03-28 06:20:54 7.7 Myanmar                    95.920   22.010    1041       1.0    -0.8    -0.5       1.0    -0.8    -0.5
 CUUT  100.534   13.736 No    2025-03-28 06:20:54 7.7 Myanmar                    95.920   22.010    1041       1.0    -0.8    -0.5       1.0    -0.8    -0.5
 LHAZ   91.104   29.657 Yes   2025-03-28 06:20:54 7.7 Myanmar                    95.920   22.010     977      -1.1     0.9    -0.6      -1.1     0.9    -0.6
 NKAY  105.153   17.719 No    2025-03-28 06:20:54 7.7 Myanmar                    95.920   22.010    1077       1.2    -0.9    -0.6       1.2    -0.9    -0.6
 PBR4   92.712   11.637 No    2025-03-28 06:20:54 7.7 Myanmar                    95.920   22.010    1203       0.6     0.8     0.3       0.6     0.8     0.4
 SHLG   91.913   25.674 No    2025-03-28 06:20:54 7.7 Myanmar                    95.920   22.010     576      -4.0     3.4    -2.1      -4.0     3.4    -2.0
 TOAY  106.627   16.073 No    2025-03-28 06:20:54 7.7 Myanmar                    95.920   22.010    1304       0.8    -0.7    -0.4       0.9    -0.7    -0.4
 NIUM -169.927  -19.077 Yes   2025-03-30 12:18:46 7.0 Tonga Islands            -174.110  -20.500     465      -1.1    -0.4     0.2      -1.1    -0.4     0.2
 TONG -175.179  -21.145 No    2025-03-30 12:18:46 7.0 Tonga Islands            -174.110  -20.500     132      12.9     7.4     1.0      12.7     7.0     1.7