Abstract
Absolute gravity measurements were made at three sites in Australia as the first step of an on-going bilateral collaboration between Japan and Australia for the purpose of monitoring mean sea level change in the southwestern Pacific region. The measurements were taken with 3 Micro-g solutions FG5 absolute gravimeters: two of the instruments are owned by the Geographical Survey Institute (GSI), Japan, and the third is owned by the Exploration and Mining Division of CSIRO, Australia.
Intercomparison of the 3 instruments at Mt. Stromlo over a period of 3 days, show agreement to better than 1 microgal. The standard deviations of a single drop are 12–27 microgals and the formal errors of the determined gravity values are about 1 microgal. The data taken by these instruments clearly show the 2–6 microgal ocean load tidal components, indicating the suitability of these instruments to detect any non-tidal gravity changes on the order of 1 microgal corresponding to a vertical crustal movement of 3mm. We intend to continue this project as a joint research for the future.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Ananga, N., R. Coleman and C. Rizos, Geodetic Monitoring of Tide Gauge Bench Marks with GPS, Jour. Geod. Soc. Japan, 1995, 41, 91–97.
Boedecker, G., IAGBN: Absolute Gravity Observations Data Processing Standards, BGIBull. d’Information, 1991, 69, 25.
Francis, O. and P. Mazzega, Global Charts of Ocean Tide Loading Effects, J. Geophys. Res., 1990, 95, 11411–11424.
Ma, X. C., C. Shum, R. Eanes and B. Tapley, Determination of Ocean Tides from the First Year of TOPEX/POSEIDON Altimeter Measurements, J. Geophys. Res., 1994, 99, 24809–24820.
Marson, I., J. E. Faller, G. Cerutti, P. De Maria, J.-M. Chartier, L. Robertsson, L. Vitushkin, J. Friederich, K. Krauterbluth, D. Stizza, J. Liard, C. Gagnon, A. Lothhammer, H. Wilmes, J. Makinen, M. Murakami, F. Rehren, M. Schnull, D. Ruess and G. S. Sasagawa, Fourth International Comparison of Absolute Gravimeters, Metrologia, 1995, 32, 137–144.
Niebauer, T and G. Sasagawa, J. Faller, R. Hilt and F. Klopping, A New Generation of Absolute Gravimeters, Metrologia, 1995, 32, 159–180.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1997 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Murakami, M. et al. (1997). Absolute Determination of Gravity in Australia for the Purpose of Establishment of Precise Reference Frame for Mean Sea Level Change Monitoring in Southwestern Pacific. In: Segawa, J., Fujimoto, H., Okubo, S. (eds) Gravity, Geoid and Marine Geodesy. International Association of Geodesy Symposia, vol 117. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-03482-8_7
Download citation
DOI: https://doi.org/10.1007/978-3-662-03482-8_7
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-08328-0
Online ISBN: 978-3-662-03482-8
eBook Packages: Springer Book Archive