Hart RJA, Palmer NG. 2020. Kinematics of the New Zealand plate boundary: field report on GNSS surveys of the Top of the South Island Network (TOPS2020). Lower Hutt (NZ): GNS Science. 32 p. (GNS Science report; 2020/15). doi:10.21420/E6FD-ME17.
Between January and February 2020, a combined team from GNS Science, Land Information New Zealand (LINZ), Otago University (OU) and Leeds University (LU) re-measured a network of 118 geodetic survey markers using Global Navigation Satellite System (GNSS) methods throughout the Top of the South Island region of New Zealand for monitoring the regional deformation due to tectonic processes. Previous comprehensive GNSS surveys of this region have been carried out by Department of Survey and Land Information (DoSLI) in 1996 [Tait K 1996], GNS Science in 2000 (TOPS2000, [Matheson and Beavan 2000]), 2004 (TOPS2004 [Palmer N P 2004]), 2012 (TOPS 2012, [unpublished]) and 2018 (TOPS2018) [Hart RJA and Palmer NP 2019]. This report documents the field operations of the TOPS2020 resurvey. It describes the logistics of the campaign, the sites occupied, and the data collected. The observations and data collected during this survey are intended to fulfil GNS Science’s obligation to Land Information New Zealand under the contract as outlined below. Contract name: “Regional Deformation Monitoring Service”. (auth)