TY - GEN
T1 - Densification of the IHRF in Denmark, The Faroe Islands, and Greenland
AU - Teitsson, Hergeir
AU - Sánchez, Laura
AU - Forsberg, René
N1 - Publisher Copyright:
© The Author(s) 2024.
PY - 2025
Y1 - 2025
N2 - The International Association of Geodesy (IAG) introduced and defined, in 2015, the International Height Reference System (IHRS) as the conventional reference system for the global physical height determination. Following the conventions for the realisation of the IHRS, i.e. the determination of the International Height Reference Frame (IHRF), we utilize the existing GNSS reference stations in Denmark, The Faroe Islands, and Greenland to determine a local densification of the IHRF in these regions. The physical heights of these Danish, Faroese and Greenlandic GNSS reference stations have been transformed from the local Danish, Faroese, and Greenlandic height systems, DVR90, FVR09 and GVR16, respectively, to geopotential numbers and normal heights referring to the IHRF. The offset to the IHRF is found to be −44.0 ± 1.9 cm, −59.8 ± 5.1 cm and − 54.1 ± 11.3 cm for the DVR90, FVR09 and GVR16, respectively. This transformation relies on the existing precise local (quasi-)geoid models. This contribution describes the applied procedures in the IHRF densification and discusses the quality assessment of the results.
AB - The International Association of Geodesy (IAG) introduced and defined, in 2015, the International Height Reference System (IHRS) as the conventional reference system for the global physical height determination. Following the conventions for the realisation of the IHRS, i.e. the determination of the International Height Reference Frame (IHRF), we utilize the existing GNSS reference stations in Denmark, The Faroe Islands, and Greenland to determine a local densification of the IHRF in these regions. The physical heights of these Danish, Faroese and Greenlandic GNSS reference stations have been transformed from the local Danish, Faroese, and Greenlandic height systems, DVR90, FVR09 and GVR16, respectively, to geopotential numbers and normal heights referring to the IHRF. The offset to the IHRF is found to be −44.0 ± 1.9 cm, −59.8 ± 5.1 cm and − 54.1 ± 11.3 cm for the DVR90, FVR09 and GVR16, respectively. This transformation relies on the existing precise local (quasi-)geoid models. This contribution describes the applied procedures in the IHRF densification and discusses the quality assessment of the results.
KW - Global unified vertical reference system
KW - IHRF densification
KW - International Height Reference Frame (IHRF)
KW - World height system
U2 - 10.1007/1345_2024_255
DO - 10.1007/1345_2024_255
M3 - Article in proceedings
AN - SCOPUS:105017375108
SN - 978-3-031-91166-8
SN - 978-3-031-91169-9
T3 - International Association of Geodesy Symposia
SP - 281
EP - 293
BT - Together Again for Geodesy - Proceedings of the General Assembly of the International Association of Geodesy, 2023
A2 - Freymueller, Jeffrey T.
A2 - Sánchez, Laura
PB - Springer
CY - Cham
T2 - 28th General Assembly of the International Association of Geodesy
Y2 - 11 July 2023 through 20 July 2023
ER -