Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/5066| DC Field | Value | Language |
|---|---|---|
| dc.contributor.authorall | Meslem, M.A.; National Institute of Cartography and Remote Sensing, Algiers, Algeria | en |
| dc.date.accessioned | 2009-06-04T09:52:22Z | en |
| dc.date.available | 2009-06-04T09:52:22Z | en |
| dc.date.issued | 2005 | en |
| dc.identifier.uri | http://hdl.handle.net/2122/5066 | en |
| dc.description.abstract | The use of GPS for the estimation of orthometric heights in a given region, with the help of existing levelling data requires the determination of a local geoid and the bias between the local levelling and the one implicitly defined when the geoid is calculated which is generally based on the gravity anomalies data. The heights of new data can be collected swiftly without using the orthometric heights from levelling; it is what one calls commonly levelling by GPS. In this framework, the Least Squares Collocation method (LSC) has been used to evaluate the quality of the available GPS-Levelling data, to determine a gravimetric geoid in the North region of Algeria and to estimate the constant datum bias. The data used in the setting of this study are: The geopotential model EGM96, a total number of 2534 gravity anomalies, as well as 43 GPS points connected to the geodetic network levelling present on the whole North part of Algerian. | en |
| dc.language.iso | English | en |
| dc.publisher.name | Bureau gravimétrique international, Toulouse, FRANCE (Revue) | en |
| dc.relation.ispartof | Newton's bulletin ISSN 1810-8547 | en |
| dc.relation.ispartofseries | 3/2005 | en |
| dc.subject | Least Squares Collocation | en |
| dc.subject | GPS/Levelling | en |
| dc.subject | Gravity data | en |
| dc.subject | Local geoid | en |
| dc.title | A gravimetric quasi-geoid evaluation in the Northern region of Algeria using EGM96 and GPS/Levelling. | en |
| dc.type | article | en |
| dc.description.status | Published | en |
| dc.description.pagenumber | 18-26 | en |
| dc.identifier.URL | http://bgi.cnes.fr:8110/Meslem.pdf | en |
| dc.subject.INGV | 04. Solid Earth::04.03. Geodesy::04.03.99. General or miscellaneous | en |
| dc.relation.references | [1] C.C. Tscherning, Geophysical Institute, University of Copenhagen, Haraldsgage 6, DK-2200 Copenhagen N, July 1990. The Use of Optimal Estimation for Gross-error Detection in Databases of Spatially Correlated Data. [2] C.C.Tscherning, Geophysical Institute, University of Copenhagen, Haraldsgage 6, DK-2200 Copenhagen N. Mathematical and statistical methods in physical geodesy, Spring semester 1991. Revised July 1992. [3] C.C. Tscherning. The Ohio State University, Department of Geodetic Science, July 1974. A FORTRAN IV Program for the Determination of the Anomalous Potential Using Stepwise Least Squares Collocation. [4] C.C.Tscherning, Department of Geophysics, Juliane Maries Vej 30, DK-2100 Copenhagen Ø, Denmark. Datum-shift, error-estimation for geoid determination, prepared for the International School on the Determination and Use of the Geoid. Draft, July 2002. [5] C.C.Tscherning (Department of Geophysics, Juliane Maries Vej 30, DK-2100 Copenhagen Ø, Denmark ) , Anwar Radwan, A.A.Tealeb, S.M.Mahmoud, Abd El-monum Mohamed, Ramdan Hassan, El-Syaed Issawy and K. Saker (all at National Research Institute of Astronomy and Geophysics, Helwan, Cairo, Egypt). Local geoid determination combining gravity disturbances and GPS/levelling A case study in the Lake Naser area, Aswan, Egypt. [6] Gravsoft – A System for Geodetic Gravity Field Modelling. C.C. Tscherning, Department of Geophysics, Juliane Maries Vej 30, DK-2100 Copenhagen N. R. Forsberg and P. Knudsen, Kort og Matrikelstyrelsen, Rentemestervej 8, DK-2400 Copenhagen NV. [7] S.A. Ben Ahmed Daho, S. Kalouche. Centre National des Techniques Spatiales, Arzew-31200, Algérie. Validation des Mesures Gravimétriques Par la Méthode de Collocation. Revue International des Technologies Avancées, janvier 2003. [8] H. Moritz, 1980. Advanced Physical Geodesy, H. Press, Karlsruhe-Tundridge Wells. [9] The Generic Mapping Tools (GMT), Paul Wessel, School of Ocean and Earth Science and Technology, University Of Hawaii at Manoa, and Walter H. F. Smith, Laboratory for Satellite Altimetry, NOAA/NESDIS/NODC, March 2002. [10] Lecture Notes, International School for the Determination and Use of the Geoid, Milan Oct. 1994, and Rio de Janeiro 1997. [11] M.A. Meslem, Résultats préliminaires relatifs à la détermination d’un géoïde du Nord de l’Algérie, Bulletin des Sciences Géographiques N.12, INCT, Oct.2003. | en |
| dc.description.journalType | N/A or not JCR | en |
| dc.description.fulltext | open | en |
| dc.contributor.author | Meslem, M.A. | en |
| dc.contributor.department | National Institute of Cartography and Remote Sensing, Algiers, Algeria | en |
| item.openairetype | article | - |
| item.cerifentitytype | Publications | - |
| item.languageiso639-1 | en | - |
| item.grantfulltext | open | - |
| item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
| item.fulltext | With Fulltext | - |
| crisitem.author.dept | National Institute of Cartography and Remote Sensing, Algiers, Algeria | - |
| crisitem.classification.parent | 04. Solid Earth | - |
| Appears in Collections: | Article published / in press | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Meslem.pdf | Geoid determination of Northern Algeria | 250.73 kB | Adobe PDF | View/Open |
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