Ducrocq, C.; Hreinsdóttir, S. 2024 Kinematics of the New Zealand plate boundary: field report on GNSS surveys in Arthur's Pass (AP2024). Lower Hutt, N.Z.: GNS Science. GNS Science report 2024/25. 33 p.; doi: 10.21420/SXRP-CH38
Abstract
Repeated Global Navigation Satellite System (GNSS) measurements provide valuable measurements to monitor and increase our understanding of crustal deformation from geological processes. We detail in this report the logistic and data collected during the 2024 GNSS field survey across the Arthur’s Pass region (South Island, New Zealand). Three teams, two from GNS Science and one from University of Otago School of Surveying, collected positional data for 75 sites in the region from 29 January to 19 February 2024. This survey was the first detailed survey in this region since the November 2016 Kaikoura earthquake. The selected sites are well spread across the region to capture its overall crustal deformation with reduced spacing in measurements near the Alpine Fault and extended to cover the epicentral surroundings of the September 2023 M6 Geraldine earthquake. The measurements collected during this survey have important significance for the study of tectonic processes in the South Island (auths)
