Studies on global gravity changes by means of absolute gravity measurements at the GGP-JAPAN superconducting gravity stations.

通过GGP-JAPAN超导重力站的绝对重力测量研究全球重力变化。

基本信息

批准号：
14340132
负责人：
FUKUDA Yoichi
金额：
$ 10.62万
依托单位：
Kyoto University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14340132/
关键词：
Absolute Gravimeter Superconducting Gravimeter GGP Gravity Changes Satellite Gravimetry Gravity Base Station

项目摘要

The goal of this study is to determine calibration factors of superconducting gravimeters of the GGP(Global Geodynamic project)-Japan stations, and to obtain precise gravity data sets, which can be used for the comparison with the satellite gravity data such as GRACE, by means of absolute gravity measurements.For this purpose, we conducted absolute gravity measurements by our own hand at the GGP-Japan sites of Bandung (Indonesia) in 2002, Syowa Station (Antarctica) in 2003 and Canberra (Australia) in 2004, in addition to the GGP-Japan domestic sites of Kyoto, Esashi and Matsushiro. Absolute gravity measurements at Ny-Alesund, the other GGP-Japan site in Arctic area, were also conducted in cooperation with European researchers. Moreover, we conducted additional absolute measurements in Yogyakarta and Tibinon (Indonesia), and in Perth (Australia) for future references of secular gravity changes.As the results of this study, besides the originally intended outcome, namely the determination of the calibration factors of the superconducting gravimeters at the GGP-Japan sites, we established several absolute gravity stations for detecting future gravity changes. Especially the absolute gravity measurement conducted by this research was the first one in the history of Indonesia, and it also played a big role to enhance the gravity reference network in Indonesia.On the other hand, from the viewpoint of the secular gravity changes, we detected the gravity change expected from the postglacial rebound in Syowa Station, and we also succeeded in detecting the gravity change associated with present day ice melting in Ny-Alesund.

这项研究的目的是确定GGP（全球地球动力学项目） - 日本站的超导重量表的校准因子，并获得精确的重力数据集，可用于与卫星重力数据（如宽限期（例如宽限期）进行比较），通过此目的进行绝对的分配。（印度尼西亚）2002年，Syowa Station（Antarctica）于2003年和2004年的堪培拉（澳大利亚），除了京都，Esashi和Matsushiro的GGP - 日本国内遗址外。还与欧洲研究人员合作，在北极地区的另一个GGP - 日本站点NY-Alesund的绝对重力测量值进行。此外，我们在Yogyakarta和Indonesia（印度尼西亚）和澳大利亚的珀斯进行了其他绝对测量，以实现世俗重力变化的未来参考。作为这项研究的结果，除了预定的结果，即最初确定了最初的校准因子的校准因子的确定，在GGP-Japan Serets callitation reptration的校准范围内，我们建立了几个未来的经验，我们在我们建立了几个未来的经验。 Especially the absolute gravity measurement conducted by this research was the first one in the history of Indonesia, and it also played a big role to enhance the gravity reference network in Indonesia.On the other hand, from the viewpoint of the secular gravity changes, we detected the gravity change expected from the postglacial rebound in Syowa Station, and we also succeeded in detecting the gravity change associated with present day ice melting in Ny-Alesund.