Creation of the Gravimetric Network and Determination of the GEOÏD in the Mediterranean Basin (Region-Tunisia)

• 作者: Atef Belhaj Ali Marcel Ghannem
• 来源期刊: 地理信息系统(英文)
• 学科: 地球科学
• 关键词: Gravimetric Network GEOID GEODESY Grand Tunis Bizerte Stokes Integral R-C-R Method
• 年，卷（期）: 2020,（3）
• 页码范围: 159-177
• 页数: 19页
• 分类号: P22

摘要

<span style="font-family:Verdana;">The determination of geoid models with great precision (centimeter) was always at the center of interest in geodesy research [<a href="#ref1">1</a>] [<a href="#ref2">2</a>]. One of the most used methods to calculate the geoid model is the method called Remove-Compute-Restore (R-C-R). This method applies the stokes’ integral formula by the use of short, medium and long wavelength information via the three main stages R-C-R. The GravSoft software implemented by [<a href="#ref3">3</a>] was used for this study. Geodetic heights, a digital terrain model (SRTM) and leveled GPS points were used as inputs. The geoid modeling was carried out on the North region of Tunisia (Grand Tunis and Bizerte) on an area of 83 × 83 km. The accuracy of the quasi-geoid provisional reached 3.1 cm.</span>