Victoria University Antarctic Research Expedition Science and Logistics Reports 1980-81: VUWAE 25

B. Linear Regression Lines for the Refraction Arrivals at each Spread

B. Linear Regression Lines for the Refraction Arrivals at each Spread.

Line 1
Spread Offset Shot Point Apparent Velocity Intercept Comments
1 2832m II 5597 0.276
7820 0.484
2 1879m II 5065 0.242
953m I 6398 0.233
3 1912m I 4893 0.170
920m II 5759 0.295 Channels 1, 2, 12 only weak
3246 0.157
4904 0.258
4 2832m I 3839 0.018
Line 2
Spread Shot Point Angle Offset Speed Intercept Comments
1 IV 0 7888m 4985 0.604
III 0 3966m 4741 0.286
2 II 0 322m 3800 0.243
III 0 3633m 4658 0.275
3 II 0 1352m 3915 0.191
6631 0.355 Geophones 1-4 and 10-12 only
III 0 2617m 5071 0.363
IV 0 6531m 5616 0.776
4 II 0 2345m 4858 0.249
III 1632m 6509 0.467
IV 0 5545m 5904 2.799 Probably not refraction arrival
8721 1.208
5 II 0 3324m 4030 0.110
III 0 641m 2322 0.221
IV 0 4563m 2987 1.111 Bubble Pulse
9806 1.282
6 II 0 4287m 3398 -0.074
IV 0 3608m 5377 0.850 Very weak
3000 0.373
22400 1.556
7 II 3.6° 5293m 3146 -0.205
III 17.8° 1041m 2692 0.223
IV 7.3° 2636m 2200 0.217
2893 0.308
3881 0.453
8 II 6269m 4619 0.384
III 9.5° 1995m 3253 0.532
3930 0.404
IV 8.5° 1671m 3482 0.380
2281 0.220
9 II assume = 0 7221m 3844 0.089
III assume = 0 2954m 3389 0.512
3368 0.633
2641 0.063 Very Week
IV assume = 0 659m 2356 0.237