[teqc] NPIT in Halemaʻumaʻu crater collapse on the Big Island of Hawai'i

Lou Estey lou at unavco.org
Thu Jun 14 10:12:27 MDT 2018


Our daily PP using teqc on incoming data is showing some phenomenal rates of motion at NPIT
that used to be about 100 meters NE from the rim of Halemaʻumaʻu crater in the Kilauea caldera.

https://en.wikipedia.org/wiki/Halemaumau_Crater#/media/File:Halemaumau-map_L.jpg

drone video of current collapse: https://www.youtube.com/watch?v=jOnSl1sHCaw

Daily PP solutions from teqc are below on the right.  They are, like almost all of teqc's
current PP solutions, systematically about 15 - 15.5 meters too high, but the trend is quite
clear.  (Positions of the left are metadata in the BINEX file from the receiver.  Apparently
the receiver doesn't know what to make of this situation, either.  And "90  0  -6356752.3142"
is equivalent to an XYZ of 0 0 0, so this just means "position unknown".)

The drop has been over 57 meters since ~May 25th, with almost 20 meters of drop just in the
last few days.  NPIT must be sitting on one of the intact blocks ... which is dropping like
a proverbial rock. :)

--lou

Filename                   Latitude   Longitude   Elevation       QC Latitude QC Longitude  QC Elevation
npit20180516.bnx           19.412268 -155.280993     1132.5759    19.412281  -155.280999       1145.6373
npit20180517.bnx           19.412281 -155.280999     1127.8773    19.412281  -155.280996       1144.8066
npit20180518.bnx           19.412282 -155.281008     1130.7909    19.412286  -155.280996       1143.6662
npit20180519.bnx           90           0        -6356752.3142    19.412289  -155.281001       1145.9596
npit20180520.bnx           19.412282 -155.281000     1131.1005    19.412283  -155.280998       1145.0248
npit20180521.bnx           19.412289 -155.281007     1129.3905    19.412283  -155.280998       1144.7059
npit20180522.bnx           19.412281 -155.281000     1133.0275    19.412283  -155.280997       1144.9879
npit20180523.bnx           19.412299 -155.281004     1127.1047    19.412288  -155.281001       1145.8510
npit20180524.bnx           19.412289 -155.281002     1130.2914    19.412284  -155.281001       1144.2231
npit20180525.bnx           19.412276 -155.281000     1129.4189    19.412281  -155.281002       1144.2258
npit20180526.bnx           90           0        -6356752.3142    19.412281  -155.281002       1143.4853
npit20180527.bnx           90           0        -6356752.3142    19.412279  -155.281001       1144.1646
npit20180528.bnx           90           0        -6356752.3142    19.412282  -155.281004       1144.1340
npit20180529.bnx           19.412280 -155.281004     1131.0635    19.412273  -155.281008       1141.6893
npit20180530.bnx           90           0        -6356752.3142    19.412266  -155.281015       1140.2435
npit20180531.bnx           90           0        -6356752.3142    19.412257  -155.281026       1139.3871
npit20180601.bnx           19.412258 -155.281020     1126.4121    19.412258  -155.281022       1140.1935
npit20180602.bnx           19.412252 -155.281044     1123.9359    19.412250  -155.281034       1140.2778
npit20180603.bnx           90           0        -6356752.3142    19.412242  -155.281037       1139.3155
npit20180604.bnx           90           0        -6356752.3142    19.412237  -155.281048       1137.2433
npit20180605.bnx           90           0        -6356752.3142    19.412239  -155.281053       1136.9701
npit20180606.bnx           90           0        -6356752.3142    19.412230  -155.281053       1134.5017
npit20180607.bnx           90           0        -6356752.3142    19.412224  -155.281064       1133.8237
npit20180608.bnx           90           0        -6356752.3142    19.412202  -155.281075       1130.7747
npit20180609.bnx           90           0        -6356752.3142    19.412171  -155.281094       1124.9925
npit20180610.bnx           90           0        -6356752.3142    19.412126  -155.281094       1117.9545
npit20180611.bnx           90           0        -6356752.3142    19.412090  -155.281082       1110.0381
npit20180612.bnx           90           0        -6356752.3142    19.412044  -155.281064       1101.3410
npit20180613.bnx           90           0        -6356752.3142    19.412003  -155.281048       1092.4864



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