| [an error occurred while processing this directive] |
Global Geology 2024, 27(4) 207-215 DOI:
ISSN: 1673-9736 CN: 22-1371/P |
|
|
|
|
本期目录 |
下期目录 |
过刊浏览 |
高级检索
[打印本页]
[关闭] |
|
| 论文 |
|
|
|
|
|
|
|
|
|
|
|
摘要：
|
|
|
关键词：
|
|
|
Geoid interpolation in Gongzhuling City and the 1cm quasi geoid reffnement
|
|
|
WANG Yongchun 1 , ZHONG Linshan 2,3* , ZHAO Han 3 and WU Qiong 3
|
|
|
1. Tianjin Best Marine Geo-Technology Co.Ltd., Tianjin 300457, China;
2. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;
3. College of Geo-exploration Science and Technology, Jilin University, Changchun 130026, China |
|
|
Abstract:
The reffnement of the 1cm geoid holds signiffcant importance in engineering applications, where the accuracy of the geoid is frequently constrained by its resolution. However, there has been limited exploration into the speciffc relationship between geoid resolution and accuracy. This article aims to address this gap by thoroughly examining said relationship. This study employs the CapRCR modification to calculate the geoid of Gongzhuling City. The ffndings indicate that the accuracy can be enhanced by 2% to 9% through encryption of the geoid resolution from 2.5′×2.5′ to 1.5′×1.5′. Furthermore, this improvement can be augmented by 15% to 21% through encryption of the gravity anomaly to the same resolution. The accuracy of the geoid exhibits a linear relationship with the resolution of gravity anomalies. The theoretical accuracy of the geoid, excluding integration errors, is determined to be 1.21 cm. In engineering applications, opting for a resolution of 30''×30'' can result in the geoid containing only an integration error of 2 mm. However, to attain an accuracy of 1 cm, it becomes imperative to further mitigate data errors. Consequently, the ffnal reffned quasi-geoid accuracy is established at 0.56 mm.
|
|
|
Keywords:
geoid
resolution
RCR technique
interpolation
|
|
|
收稿日期 修回日期 网络版发布日期 |
|
|
DOI: |
|
|
基金项目:
|
|
|
通讯作者: |
|
|
作者简介: |
|
作者Email: |
|
|
| 参考文献： |
| |
| 本刊中的类似文章 |
| 1．. [J]. Global Geology, 2024,27(4): 177-195 |
| 2．. [J]. Global Geology, 2024,27(4): 196-206 |
| 3．. [J]. Global Geology, 2024,27(4): 216-232 |
| 4．. [J]. Global Geology, 2024,27(3): 145-153 |
| 5．. [J]. Global Geology, 2024,27(3): 154-166 |
| 6．. [J]. Global Geology, 2024,27(3): 121-131 |
| 7．. [J]. Global Geology, 2024,27(3): 132-144 |
| 8．. [J]. Global Geology, 2024,27(3): 167-176 |
| 9．. [J]. Global Geology, 2024,27(2): 93-104 |
| 10．. [J]. Global Geology, 2024,27(2): 105-120 |
| 11．. [J]. Global Geology, 2024,27(2): 63-75 |
| 12．. [J]. Global Geology, 2024,27(2): 76-92 |
| 13．. [J]. Global Geology, 2024,27(1): 35-42 |
| 14．. [J]. Global Geology, 2024,27(1): 43-55 |
| 15．. [J]. Global Geology, 2024,27(1): 56-62 |
|
| Copyright by Global Geology |
