2026-07-06T15:19:07Z https://researchdata.tuwien.ac.at/oai2d

oai:researchdata.tuwien.ac.at:hfkat-ag945 2025-01-20T17:22:37Z openaire_data community-tuw-higher-geodesy

4.3 TUW.TUDATA 10.48436/hfkat-ag945 oai:researchdata.tuwien.ac.at:hfkat-ag945 Kern, Lisa Maria Lisa Maria Kern 0000-0002-2065-9705 TU Wien TU Wien 2025 Krasna, Hana Hana Krasna 0000-0001-8660-649X TU Wien Nothnagel, Axel Axel Nothnagel 0000-0002-1295-9548 TU Wien Böhm, Johannes Johannes Böhm 0000-0002-1208-5473 TU Wien 2025-01-09 2025-01-20 eng 10.5194/egusphere-egu24-16905 10.48436/rqf6q-dt861 https://researchdata.tuwien.ac.at/communities/tuw-higher-geodesy/ 2.0.0 Creative Commons Attribution 4.0 International Description The dataset contains three terrestrial reference frames, S0, S1 and S2, determined from Very Long Baseline Interferometry (VLBI) observations analysed by the Vienna International VLBI Service for Geodesy and Astrometry (IVS) Analysis Center (VIE).  Context and methodology S0: 1980.0-2021.0, S/X VLBI sessions with more than 3 stations S1: 1980.0-2021.0, S/X VLBI sessions with more than 3 stations + 4 additional discontinuity breaks for NYALES20 due to PDIM (proposed by Le Bail. 2023) S2: 1980.0-2021.0, S/X VLBI sessions with more than 3 stations + 2 additional discontinuity breaks for NYALES20 due to PDIM (realized in ITRF2020-u2023 (IERS ITRF Center 2024)) These terrestrial reference frames were used to calculate session-wise estimated VLBI scale factors to analyse the impact of a modfied station movement model for the VLBI station NYALES20 (Norway, Svalbard) on the VLBI scale. Thus, additional discontinuity intervals have been introduced in the determination of S1 and S2 to more accurately account for the climate change-related processes happening in Svalbard.  The two reference frames were computed using VieCompy (Kern et al. 2023), a combination software under the umbrella of VieVS (Vienna VLBI and Satellite Software; Böhm et al. 2018) written in Python.  The corresponding publication with the title Terrestrial Reference Frame Scale Drift Anomalies in VLBI and the Contribution of Ny-Ålesund Radio Telescopes has been submitted to the Earth, Planets and Space Journal.  Technical details The dataset contains the position and velocities of 82 VLBI stations and considers the discontinuities in station position of 19 (S0)/20 (S1, S2) stations.