Electronic Supplement to
Fault Location and Slip Distribution of the 22 February 2011 Mw 6.2 Christchurch, New Zealand, Earthquake From Geodetic Data

by John Beavan, Eric Fielding, Mahdi Motagh, Sergey Samsonov, and Nic Donnelly

Table S3. Parameters of two-fault model corresponding to Figure 6 in main text.

Christchurch earthquake, 22 Feb 2011
Variable slip model 3.04SRL, 22 September 2011

Based on ground displacements from GPS and DInSAR (Cosmo-SkyMed and ALOS/PALSAR); elastic half-space assumption.

Two-fault solution.
Fault 1 is interpreted to be the main shock fault plane.
Fault 2 is interpreted to be associated with the Mw 5.8 and 5.9 aftershocks that occurred within 2 hours of the main shock.
Lat, lon and depth are to the centre of the fault patch.
Strike, dip and rake use the Aki & Richards convention.

strike_deg dip_deg rake_deg width_km length_km slip_m depth_km lat_deg lon_deg fault plane
58 72 -161.7 1 1 0.303 1.476 -43.564865 172.656281 fault 1
58 72 -169 1 1 0.437 2.427 -43.567223 172.65831 fault 1
58 72 -179.6 1 1 0.443 3.378 -43.56958 172.660339 fault 1
58 72 170.3 1 1 0.371 4.329 -43.571938 172.662384 fault 1
58 72 165.6 1 1 0.26 5.28 -43.574295 172.664398 fault 1
58 72 177.7 1 1 0.175 6.231 -43.576649 172.666443 fault 1
58 72 -161.8 1 1 0.249 7.182 -43.579006 172.668472 fault 1
58 72 -165 1 1 0.592 1.476 -43.560101 172.666809 fault 1
58 72 -173.7 1 1 0.864 2.427 -43.562458 172.668823 fault 1
58 72 175.4 1 1 0.95 3.378 -43.564812 172.670868 fault 1
58 72 165.4 1 1 0.857 4.329 -43.567169 172.672897 fault 1
58 72 159.1 1 1 0.636 5.28 -43.569527 172.674927 fault 1
58 72 162.9 1 1 0.4 6.231 -43.571884 172.676956 fault 1
58 72 -177.4 1 1 0.37 7.182 -43.574242 172.678986 fault 1
58 72 -176.1 1 1 0.744 1.476 -43.555336 172.677322 fault 1
58 72 176.7 1 1 1.159 2.427 -43.557693 172.679352 fault 1
58 72 167.2 1 1 1.378 3.378 -43.560051 172.681396 fault 1
58 72 158.4 1 1 1.324 4.329 -43.562405 172.683411 fault 1
58 72 151.7 1 1 1.032 5.28 -43.564762 172.685455 fault 1
58 72 150.7 1 1 0.653 6.231 -43.567116 172.687485 fault 1
58 72 163.9 1 1 0.475 7.182 -43.569473 172.689514 fault 1
58 72 170.2 1 1 0.854 1.476 -43.550568 172.687836 fault 1
58 72 166.3 1 1 1.397 2.427 -43.552925 172.68988 fault 1
58 72 159.1 1 1 1.755 3.378 -43.555283 172.69191 fault 1
58 72 151.9 1 1 1.762 4.329 -43.55764 172.693939 fault 1
58 72 145.8 1 1 1.424 5.28 -43.559998 172.695969 fault 1
58 72 142.9 1 1 0.923 6.231 -43.562355 172.697998 fault 1
58 72 150.8 1 1 0.609 7.182 -43.564713 172.700043 fault 1
58 72 160.1 1 1 0.974 1.476 -43.545807 172.698364 fault 1
58 72 158.7 1 1 1.612 2.427 -43.548161 172.700409 fault 1
58 72 153.4 1 1 2.085 3.378 -43.550518 172.702423 fault 1
58 72 147.7 1 1 2.146 4.329 -43.552872 172.704468 fault 1
58 72 142.5 1 1 1.775 5.28 -43.555229 172.706497 fault 1
58 72 139.2 1 1 1.174 6.231 -43.557587 172.708527 fault 1
58 72 144.2 1 1 0.747 7.182 -43.559944 172.710556 fault 1
58 72 154.1 1 1 1.087 1.476 -43.541039 172.708893 fault 1
58 72 154.4 1 1 1.781 2.427 -43.543396 172.710922 fault 1
58 72 150.7 1 1 2.322 3.378 -43.545753 172.712952 fault 1
58 72 146.1 1 1 2.412 4.329 -43.548111 172.714981 fault 1
58 72 141.7 1 1 2.018 5.28 -43.550468 172.71701 fault 1
58 72 138.7 1 1 1.354 6.231 -43.552822 172.719055 fault 1
58 72 142.5 1 1 0.855 7.182 -43.55518 172.721085 fault 1
58 72 151.8 1 1 1.175 1.476 -43.536274 172.719421 fault 1
58 72 153.3 1 1 1.857 2.427 -43.538628 172.721436 fault 1
58 72 150.4 1 1 2.396 3.378 -43.540985 172.72348 fault 1
58 72 146.5 1 1 2.488 4.329 -43.543343 172.72551 fault 1
58 72 142.6 1 1 2.089 5.28 -43.5457 172.727539 fault 1
58 72 139.8 1 1 1.409 6.231 -43.548058 172.729568 fault 1
58 72 143.3 1 1 0.879 7.182 -43.550415 172.731598 fault 1
58 72 152.3 1 1 1.155 1.476 -43.531509 172.729935 fault 1
58 72 154 1 1 1.763 2.427 -43.533867 172.731964 fault 1
58 72 151.5 1 1 2.248 3.378 -43.536221 172.734009 fault 1
58 72 147.8 1 1 2.33 4.329 -43.538578 172.736023 fault 1
58 72 144.1 1 1 1.957 5.28 -43.540932 172.738068 fault 1
58 72 141.4 1 1 1.316 6.231 -43.543289 172.740097 fault 1
58 72 144.2 1 1 0.8 7.182 -43.545647 172.742126 fault 1
58 72 152.4 1 1 0.997 1.476 -43.526741 172.740448 fault 1
58 72 154.3 1 1 1.487 2.427 -43.529099 172.742493 fault 1
58 72 152.2 1 1 1.887 3.378 -43.531456 172.744522 fault 1
58 72 148.9 1 1 1.955 4.329 -43.533813 172.746552 fault 1
58 72 145.3 1 1 1.641 5.28 -43.536171 172.748581 fault 1
58 72 142.5 1 1 1.095 6.231 -43.538528 172.75061 fault 1
58 72 143.4 1 1 0.642 7.182 -43.540882 172.752655 fault 1
58 72 149.9 1 1 0.759 1.476 -43.521976 172.750977 fault 1
58 72 152.7 1 1 1.101 2.427 -43.524334 172.753021 fault 1
58 72 151.7 1 1 1.39 3.378 -43.526688 172.755035 fault 1
58 72 149 1 1 1.438 4.329 -43.529045 172.75708 fault 1
58 72 145.7 1 1 1.201 5.28 -43.531403 172.759109 fault 1
58 72 142.4 1 1 0.788 6.231 -43.53376 172.761139 fault 1
58 72 141 1 1 0.438 7.182 -43.536118 172.763168 fault 1
58 72 145.3 1 1 0.486 1.476 -43.517212 172.761505 fault 1
58 72 149.4 1 1 0.677 2.427 -43.519569 172.763535 fault 1
58 72 149.8 1 1 0.843 3.378 -43.521927 172.765564 fault 1
58 72 148 1 1 0.865 4.329 -43.524284 172.767593 fault 1
58 72 145.1 1 1 0.713 5.28 -43.526638 172.769623 fault 1
58 72 141.3 1 1 0.453 6.231 -43.528996 172.771667 fault 1
58 72 137.1 1 1 0.225 7.182 -43.531349 172.773682 fault 1
58 72 139.6 1 1 0.209 1.476 -43.512444 172.772034 fault 1
58 72 145.1 1 1 0.273 2.427 -43.514801 172.774048 fault 1
58 72 147.2 1 1 0.331 3.378 -43.517159 172.776093 fault 1
58 72 146.3 1 1 0.335 4.329 -43.519516 172.778122 fault 1
58 72 143.6 1 1 0.27 5.28 -43.521873 172.780151 fault 1
58 72 139.1 1 1 0.163 6.231 -43.524231 172.782181 fault 1
58 72 131.9 1 1 0.065 7.182 -43.526588 172.78421 fault 1
79.5 87 169.2 1 1 0.231 2.499 -43.581894 172.623596 fault 2
79.5 87 161.6 1 1 0.364 3.498 -43.582359 172.623718 fault 2
79.5 87 155.9 1 1 0.427 4.497 -43.582821 172.62384 fault 2
79.5 87 153.1 1 1 0.414 5.495 -43.583282 172.623947 fault 2
79.5 87 154.8 1 1 0.348 6.494 -43.583748 172.624069 fault 2
79.5 87 166.1 1 1 0.315 7.493 -43.584209 172.624191 fault 2
79.5 87 176.3 1 1 0.498 2.499 -43.580254 172.635803 fault 2
79.5 87 170.2 1 1 0.717 3.498 -43.580719 172.63591 fault 2
79.5 87 164.4 1 1 0.85 4.497 -43.581181 172.636032 fault 2
79.5 87 161.4 1 1 0.83 5.495 -43.581642 172.636154 fault 2
79.5 87 162.5 1 1 0.669 6.494 -43.582108 172.636261 fault 2
79.5 87 172.9 1 1 0.505 7.493 -43.582569 172.636383 fault 2
79.5 87 -174.7 1 1 0.65 2.499 -43.578617 172.647995 fault 2
79.5 87 179.8 1 1 0.914 3.498 -43.579079 172.648117 fault 2
79.5 87 173.7 1 1 1.096 4.497 -43.579544 172.648239 fault 2
79.5 87 170.6 1 1 1.075 5.495 -43.580006 172.648346 fault 2
79.5 87 171.6 1 1 0.853 6.494 -43.580467 172.648468 fault 2
79.5 87 -178.7 1 1 0.598 7.493 -43.580933 172.64859 fault 2
79.5 87 -166.4 1 1 0.708 2.499 -43.576981 172.660202 fault 2
79.5 87 -171.3 1 1 0.979 3.498 -43.577442 172.660309 fault 2
79.5 87 -177.1 1 1 1.177 4.497 -43.577904 172.660431 fault 2
79.5 87 180 1 1 1.159 5.495 -43.578365 172.660553 fault 2
79.5 87 -179.2 1 1 0.916 6.494 -43.578831 172.660675 fault 2
79.5 87 -171.3 1 1 0.626 7.493 -43.579292 172.660797 fault 2
79.5 87 -161.8 1 1 0.702 2.499 -43.57534 172.672394 fault 2
79.5 87 -165.3 1 1 0.946 3.498 -43.575802 172.672516 fault 2
79.5 87 -169.7 1 1 1.13 4.497 -43.576263 172.672638 fault 2
79.5 87 -171.8 1 1 1.113 5.495 -43.576729 172.67276 fault 2
79.5 87 -171.1 1 1 0.883 6.494 -43.57719 172.672867 fault 2
79.5 87 -166.8 1 1 0.594 7.493 -43.577652 172.672989 fault 2
79.5 87 -162.6 1 1 0.623 2.499 -43.5737 172.684601 fault 2
79.5 87 -163.8 1 1 0.807 3.498 -43.574165 172.684723 fault 2
79.5 87 -165.5 1 1 0.956 4.497 -43.574627 172.68483 fault 2
79.5 87 -165.9 1 1 0.943 5.495 -43.575089 172.684952 fault 2
79.5 87 -165.2 1 1 0.749 6.494 -43.575554 172.685074 fault 2
79.5 87 -165.5 1 1 0.487 7.493 -43.576015 172.685181 fault 2
79.5 87 -170.3 1 1 0.46 2.499 -43.57206 172.696793 fault 2
79.5 87 -168.1 1 1 0.56 3.498 -43.572525 172.696915 fault 2
79.5 87 -164.9 1 1 0.655 4.497 -43.572987 172.697037 fault 2
79.5 87 -162.3 1 1 0.651 5.495 -43.573448 172.697144 fault 2
79.5 87 -160.5 1 1 0.52 6.494 -43.573914 172.697266 fault 2
79.5 87 -164.5 1 1 0.318 7.493 -43.574375 172.697388 fault 2
79.5 87 175.5 1 1 0.244 2.499 -43.570423 172.709 fault 2
79.5 87 -179.1 1 1 0.256 3.498 -43.570885 172.709106 fault 2
79.5 87 -168 1 1 0.286 4.497 -43.57135 172.709229 fault 2
79.5 87 -160.2 1 1 0.288 5.495 -43.571812 172.709351 fault 2
79.5 87 -155 1 1 0.235 6.494 -43.572273 172.709473 fault 2
79.5 87 -153.4 1 1 0.135 7.493 -43.572739 172.709595 fault 2

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