Geophysical and Glaciological Application of PRARE Data from E-ERS-1 Tracking Stations

E-ERS-1 跟踪站 PRARE 数据的地球物理和冰川学应用

• 批准号: 03044145
• 负责人: HIRASAWA Takeo
• 金额: $ 4.8万
• 依托单位: National Institute of Polar Research
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03044145/
• 关键词: PRARE antenna; Syowa Station; ERS-1 Satellite; Precise Ephemeris; Radar Altimeter Data; GPS Colocation; DORIS Colocation; Precise Gravimetry; 精密軌道決定; EーERSー1衛星; レ-ダ-高度計デ-タ; GPSコロケ-ション; DORISコロケ-ション

We have made collaborative research by sending/receiving scientists to/from DGFI (Munchen), Geoforschungs Zentrum Potsdam (GFZ ; Potsdam), Institute Geographic National (IGN ; Paris), Alfred-Wegener Institute fur Polar and Meeresforschung (Bremerhaven) and Center National d'Etudes Spatialles (CNES, Toulouse).The followings are brief summary on three major subjects :1. Ice Sheet ConfigurationOur main concern is to obtain 0.1 m accrate digital elevation grids after correcting for slope induced error, waveform retracking, and geoid height. ERS-1 ALT data however cannot give us grid height of better than 0.5-1 m for the shelf ice area, or 1-2 m for the inland 2000 m height katabatic wind region according to the in-situ ground survey by the German Antarctic Expedition or by the Japanese Antarctic Research Expedition. Launch of the ERS-2 with PRARE is expected.2. Geocentric Reference Frame(1) DORIS beacon antenna was installed at Syowa Station, and 1 year's DORIS beacon data gave +-4 cm convergent Cartesian coordinates. The beacon data were used for precisely orbiting Topex/Poseidon satellite. ALT accuracy can be improved by adjusting ERS-1 orbits to the Topex/Poseidon orbits.(2) Local geodetic tie between the VLBI antenna and the SCAR GPS site was tried in 1993 with the resultant accuracy of 10-15 cm. We are now investigating to have better accuracy by software improvements. Colocation of VLBI, GPS and DORIS obtained geocentric coordinates will establish 0.1 m accurate reference frame in the Antarctic region.3. Precise GravimetryInstallation of the superconducting gravimeter at Syowa Station in parallel with our Program must be an epoch-making step for precise gravimetry. Based on our discussions among NIPR, GFZ, GRGS/CNES, and Australian Land and Survey(AUSLIG ; Canberra), ATGIA(Accurate Tidal Gravimetry in Antarctica) international project will start in a near future.

我们通过派遣/接收科学家到DGFI（慕尼黑）、Geoforschungs Zentrum波茨坦（GFZ ;波茨坦）、Institute Geographic National（IGN ;巴黎）、Alfred-Wegener Institute fur Polar and Meeresforschung（不来梅港）和Center National d 'Etudes Spatialles（法国国家空间研究中心，图卢兹）进行合作研究。我们主要关心的是获得0.1米精度的数字高程网格后，纠正坡度引起的误差，波形重跟踪，大地水准面的高度。然而，根据德国南极考察队或日本南极研究考察队的现场地面调查，ERS-1 ALT数据不能为我们提供优于0.5-1米的陆架冰区网格高度，或1-2米的内陆2000米高度下吹风区网格高度。预计将发射带有PRARE的ERS-2。地心参考框架（1）DORIS信标天线安装在Syowa站，1年的DORIS信标数据给出了+-4厘米收敛笛卡尔坐标。信标数据用于Topex/Poseidon卫星的精确轨道。通过将ERS-1轨道调整到Topex/Poseidon轨道，可以提高ALT的准确性。(2)1993年尝试了VLBI天线和SCAR全球定位系统站点之间的局部大地测量联系，结果精度为10-15厘米。我们现在正在研究通过软件改进来提高准确性。VLBI、GPS和DORIS共定位获得的地心坐标将在南极地区建立0.1 m精度的参考框架.精密重力测量与我们的计划同时在昭和站安装超导重力仪，是精密重力测量的划时代的一步。根据我们在NIPR、GFZ、GRGS/CNES和澳大利亚土地和测量局（AUSLIG ;堪培拉）之间的讨论，ATGIA（南极精确潮汐重力测量）国际项目将在不久的将来开始。

项目成果

Natsuo SATO: "Journal of Geophysical Research" Solar influence of ELF-VLF emission observed at conjugate stations. 96. 11455-11460 (1991)

Natsuo SATO：《地球物理研究杂志》在共轭站观测到的 ELF-VLF 发射的太阳影响。

Masaki Ejiri: "The results of the first Antarctic VLBI experiments with the Syowa Station in Antarctica" Antarctic Science. 5. (1993)

Masaki Ejiri：“在南极洲昭和站进行的首次南极 VLBI 实验的结果”《南极科学》。

Kazuo SHIBUYA: "Local geodetic tie between the VLBI reference point and the SCAR GPS point at Syowa Station,Antarctica" Journal of Geodetic Society of Japan. (予定). (1994)

Kazuo SHIBUYA：“南极洲昭和站 VLBI 参考点和 SCAR GPS 点之间的局部大地测量联系”日本大地测量学会杂志（计划）（1994 年）。

Masaki EJIRI: "Syowa VLBI Station,Antarctica-Initial implementation and future plan" Proceedings of the International Workshop for Reference Frame Establishment and Technical Development in Space Geodesy. 291-298 (1993)

Masaki EJIRI：“南极洲昭和 VLBI 站 - 初步实施和未来计划”空间大地测量参考系建立和技术开发国际研讨会论文集。

Kazuo SHIBUYA: "Syowa Station;observatory for global geodesy in Antarctica(a review)" Proceedings of the NIPR Symposium on Antarctic Geosciences. 6. 26-36 (1993)

Kazuo SHIBUYA：“昭和站；南极洲全球大地测量观测站（综述）”NIPR 南极地球科学研讨会论文集。