10:45 AM - 11:00 AM
[SGD02-07] Absolute gravity measurements in New Zealand (2nd report)
Keywords:New Zealand, absolute gravity measurements, gravity network, gravity changes, NZ Southern Alps, Kaikoura earthquake
Although we have not conducted AG measurements in 2017, relative measurements using two LaCoste & Romberg G-meters (#680 and #805) have been conducted at four points near the summits including the two points occupied in 2016, and conducted two loops of the measurements for those points. In addition to these, we conducted the measurements at most of the AG points occupied in 2016 and some additional points from Stagpoole et al. (2015) for the calibration of the scale factors of the gravimeters, and the gravity connections to the spare points near the AG points. Moreover, for planning the AG measurements in the area of 2016 Kaikoura earthquake (Mw 7.8), we conducted test measurements at a few points where huge uplifts have been observed. In this talk, we present the results in 2017, and the future observation plan particularly in the area of Kaikoura earthquake. This study was partially supported by JSPS KAKENHI Grant No. 15H05205.