11:00 AM - 1:00 PM
[SGD02-P03] Absolute gravity measurements conducted in the 63rd Japanese Antarctic Research Expedition
Keywords:Absolute gravity measurement, Antarctic research, Measurement in the field
The absolute gravity measurements were carried out at Syowa Station and its surrounding outcrop rock areas during summer season in the 63rd Japanese Antarctic Research Expedition (JARE63) (December 2021 - January 2022) to establish the absolute gravity reference network in Antarctica and to detect the crustal movement caused by the ice sheet change. This is the first time to conduct the absolute gravity measurement in the field since summer season in the JARE59 (December 2017 - January 2018).
We used four absolute gravimeters, FG-5#201, A10#017, TAG-1, and TAG-2 for the measurements. Among them, A10 and TAG were also used in the field. In addition, two absolute gravimeters, FG-5 and AQG, were also brought in by the Geospatial Information Authority of Japan (GSI) for measurement.
At Syowa Station, the measurements by each gravimeter were carried out on the basement of the International Absolute Gravity Basement Network (IAGBN) in the Gravity Observation Hut (GOH), and the results were obtained for intercomparison. In addition, measurements by the A10 and TAG were carried out at the benchmark near the GOH. In the coastal outcrop areas, measurements were carried out at Langhovde, Skarvsnes, and Rundvågshetta. In preparation for future measurements, a survey of the surrounding environment and vibrations was carried out at S16 on the ice sheet.
In this presentation, we will show the details of the measurements and some preliminary results.
We used four absolute gravimeters, FG-5#201, A10#017, TAG-1, and TAG-2 for the measurements. Among them, A10 and TAG were also used in the field. In addition, two absolute gravimeters, FG-5 and AQG, were also brought in by the Geospatial Information Authority of Japan (GSI) for measurement.
At Syowa Station, the measurements by each gravimeter were carried out on the basement of the International Absolute Gravity Basement Network (IAGBN) in the Gravity Observation Hut (GOH), and the results were obtained for intercomparison. In addition, measurements by the A10 and TAG were carried out at the benchmark near the GOH. In the coastal outcrop areas, measurements were carried out at Langhovde, Skarvsnes, and Rundvågshetta. In preparation for future measurements, a survey of the surrounding environment and vibrations was carried out at S16 on the ice sheet.
In this presentation, we will show the details of the measurements and some preliminary results.