Japan Geoscience Union Meeting 2016

Presentation information


Symbol S (Solid Earth Sciences) » S-GD Geodesy

[S-GD22] Gravity and Geoid

Sun. May 22, 2016 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall HALL6)

Convener:*Jun Nishijima(Department of Earth Resources Engineering, Graduate School of Engineering, Kyushu University), Yuichi Aoyama(National Institute of Polar Research)

5:15 PM - 6:30 PM

[SGD22-P03] The gravity anomaly data-set include the gravity data measured by Kanazawa university and published by many institutes

*Akihiro Sawada1, Ryo Honda2, Yoshihiro Hiramatsu1 (1.School of Natural System, College of Science and Engineering, Kanazawa University, 2.Tono Research Institute of Earthquake Science)

Keywords:Gravity Anomaly, Database

We have released the gravity database using the measurement data by Kanazawa University, and this database is now available on web (Honda et al., 2012, J. Geod. Soc. Japan: http://earth.s.kanazawa-u.ac.jp/gravity_database.html). We made some efforts for visualization of the database, for example that users can see the gravity anomaly map on GoogleEarthTM. We also constructed the high quality gravity anomaly data-set over Japan to discuss the potential of seismic activity in Japan, using our database and other data-set published by many agency (Honda et al., 2015, JpGU meeting).We improved the gravity database with the sea area by compiling the marine gravity measurement data around Japan. We used the MGD77 data-set published by Japan Oceanographic Data Center with the necessary correction like the major cross-over errors (Sawada et al., 2009, Rep. Hydro. Oceano. Researches). We are sure that this improvement is prospective for the research of the tectonic activities extending over the coast area.
This research is promoted by the Grant-in-Aid for Scientific Research (C), No. 26400450.