| Pan Jiayi,Wang Junqin,Wang Yanfeng,Zhang Xinmei,Yuan Yeli,Zheng Quan'an. 1999. Calculation of geoid undulations and gravity anomalies in the Northwest Pacific by using the Topex/Poseidon and Geosat altimeter data. Acta Oceanologica Sinica, (4):523－533 |
| Calculation of geoid undulations and gravity anomalies in the Northwest Pacific by using the Topex/Poseidon and Geosat altimeter data |
| Calculation of geoid undulations and gravity anomalies in the Northwest Pacific by using the Topex/Poseidon and Geosat altimeter data |
| Received:June 11, 1998 Revised:December 15, 1998 |
| DOI： |
| Key words:Geoid undulations gravity anomalies Northwest Pacific Topex/Poseidon and Geosat altimeter data |
| 中文关键词: Geoid undulations gravity anomalies Northwest Pacific Topex/Poseidon and Geosat altimeter data |
| 基金项目: |
| Author Name | Affiliation | | Pan Jiayi | First Institute of Oceanography State Oceanic Adminitration, Qingdao 266003 China | | Wang Junqin | First Institute of Oceanography State Oceanic Adminitration, Qingdao 266003 China | | Wang Yanfeng | First Institute of Oceanography State Oceanic Adminitration, Qingdao 266003 China | | Zhang Xinmei | First Institute of Oceanography State Oceanic Adminitration, Qingdao 266003 China | | Yuan Yeli | First Institute of Oceanography State Oceanic Adminitration, Qingdao 266003 China | | Zheng Quan'an | Center for Rerrnte Sensing, College of Marine Studies, University of Delaware, Newark, DE 19716, USA |
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| Abstract: |
| The geoid undulations in the Northwest Pacific were calculated by using the Topex/Paseidon and Geoeat altirreter data.Firstly the bias between two types of the altimeter data was removed and the geoid undulations in the Northwest Pacific were acquired by a long wave bias diminishing model with a resolution of 30 km and precision of 14 cm.Then an algorithm of inversion of gravity artarrtalies was derived,and the gravity anomalies in the East China Seawere calculated by using the algorithm and the geoid undulationts.The rms of difference between the in situ measurements and the gravity anomalies from altimeter data was 3.8×10-5 m/s2.A method to calculate the gravity artornalies in a larger area was developed which combined gravity anomalies in four subregions overlapping each other into one data set in a larger region.The error analysys shows that the model and result of the inversion of gravity anomalies were reliable. |
| 中文摘要: |
| The geoid undulations in the Northwest Pacific were calculated by using the Topex/Paseidon and Geoeat altirreter data.Firstly the bias between two types of the altimeter data was removed and the geoid undulations in the Northwest Pacific were acquired by a long wave bias diminishing model with a resolution of 30 km and precision of 14 cm.Then an algorithm of inversion of gravity artarrtalies was derived,and the gravity anomalies in the East China Seawere calculated by using the algorithm and the geoid undulationts.The rms of difference between the in situ measurements and the gravity anomalies from altimeter data was 3.8×10-5 m/s2.A method to calculate the gravity artornalies in a larger area was developed which combined gravity anomalies in four subregions overlapping each other into one data set in a larger region.The error analysys shows that the model and result of the inversion of gravity anomalies were reliable. |
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