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Fetching the Most Appropriate Global Geopotential Model for Egypt

Civil Engineering Research Magazine CERM • 2013
العودة
معلومات البحث
المؤلفون Maher Mohamed Amin; Khaled Mohamed Zaky; Saadia Mahmoud EL Fatairy; Moamen Awed Habib
الكلمات المفتاحية Not Available
المجلة العلمية Civil Engineering Research Magazine CERM
الناشر Not Available
المجلد 35
العدد 3
الصفحات Not Available
publication.type International
رابط البحث Not Available
المواد المرفقة Not Available
الملخص
New additional Global Geopotential Models [GGMs] have now been released into the public domain, those including data from the CHAMP, GREACE and GOCE dedicated satellite gravimetric mission. Those satellite tracking data have resolved the long wave length component of the global gravity field with rather very high accuracy [10].Therefore, it is important to evaluate those new models over Egypt to determine which; of them is the most appropriate GGM there. In this study a comparison of the performance of three of the GGMs released between 1996 tell now (EGM96, EGM2008 and EIGEN-6C 2011) over Egypt is made. The gravity anomalies computed from the models are compared with point free air gravity anomalies on land. The results have indicated the outstanding performance of EGM2008 to the other examined GGMs undoubtedly. EGM2008 has1.23 times better statistics than the EGM96 and 2.54 times than EIGEN-6C 2011, in terms of root mean square error [r.m.s.e].