VERIFICATION OF THE CONSISTENCY OF THE PROPOSED TRANSFORMATION OF GLOBAL GEOID METHOD ACCURACY FOR LOCAL GEOID MODEL OF NIGERIA DETERMINATION

Authors

  • O. F. Oduyebo
  • M. N. Ono
  • S. O. Eteje

DOI:

https://doi.org/10.33003/fjs-2021-0504-780

Keywords:

accuracy, consistency, geoid, model, transformation

Abstract

The proposed transformation of the global geoid model method for the determination of the local geoid model of Nigeria has only been applied in part of the Federal Capital Territory, Abuja. To determine the consistency of the accuracy of the method for the intended purpose, there is a need to apply it in some other parts of the country. As a result, this study presents the verification of the consistency of the proposed transformation of global geoid method accuracy for local geoid model of Nigeria determination. DGNSS observations were carried out to obtain the coordinates of the used points. The processed global geographic coordinates were used with online software (GeoidEval) to obtain the EGM 08 geoid heights of the points. The global geographic coordinates, the global geoid heights of the points and the transformation parameters from WGS 84 to Minna datum were applied to obtain the transformed (local) geoid heights of the points using a Microsoft Excel program. The transformed geoid heights were compared with their corresponding geoid heights from the gravimetric-geometric local geoid model of the study area to obtain the model RMSE (accuracy). The obtained accuracy (2.0172 m) was compared with those of the gravimetric-geometric geoid model of the study area (0.675 m) and the transformation of global geoid heights when the method was applied in part of Abuja (0.0014 m). The comparison results showed the inconsistency of the accuracy of the proposed method. It is recommended that the method should not be applied for the intended purpose.

References

Agbaje O. Osowole A.A, Malumi; E.O and Wakil SM (2015), Synthesis, spectroscopic characterization, antimicrobial and antioxidant properties of some metal (ii) complexes of mixed ligands – riboflavin and 4 – Aminobenzoic acid, research and review journal of chemistry. 14(2):1905 – 1933.

Aiyelabola T., Akinkunmi E., Obuotor E, Olawuni I, Isabirye D and Jordaan J (2017), Synthesis, characterization and Biological activities of coordination compounds of 4-Hydroxy-3-nitro-2H-chromen-2-one and its aminoethanoic acid and pyrrolidine-2-carboxilic acid mixed ligand complexes, Bioinorganic chemistry and Application. 10(1155):1-16.

Al-noor T.H and Abdul Karim L.K (2015). Synthesis, characterization and Anti-Bacterial Activities of Co (II), Ni (II), Cu (II), Cd (II) and Hg (II) mixed ligand complexes of L-leucine and trimethoprim antibiotic: chemistry and material research: 7(3):32-39

Aurora Reiss, Stelian Florea, Theodor Caprouio, Nicolae Stanica (2009), synthesis characterization and antibacterial activity of some transition metals with the Schiff base N-(2-furanyimethylene)-3-aminodibenzofuran, Turk J Chem. 33 (2009), 775 – 783.

Cheesbrough M. (2008) District laboratory practice in tropical countries. Press syndicate publishers, University of Cambridge, Edinburgh Cambridge United Kingdom. 194 – 204.

Gurbuz D, Cinarli A, Tavman A and Tan B.S (2015), Synthesis characterization and antimicrobial activity of some transition metal complexes of N-(5-Chloro-2-hydroxyphenyl)-3-methoxy-salicyladimine; Chemical society of Ethiopia. 29(1): 63 – 74.

Hadjer F, Tahar B, Djallal A, Eddine, and Sofiane D (2018), Antioxidant and antimicrobial activity of some transition metal complexes with non – natural Amino acids used As ligand: Journal of materials and environmental sciences 9 (7) :2153 – 2157.

Islam M.N shariar S.M.S, Islam M.K, Jesmin M, Ali M.M, Khanam J.A (2013), antibacterial activities of some transition metal Schiff base complexes: international letters of chemistry, physical and astronomy, 10:12-20.

Mannir M, Nura S.G and Jabiru M (2020), Solvent – Free synthesis and evaluation of antimicrobial activity of Vanadium (III) metal complex using two amino acids as mixed ligands, International journal of innovative research and Development. 9(9):173 – 178.

Muhammad M and Kurawa M.A (2019): “solid state synthesize characterization and antimicrobial studies of Ni (11), Co (11), and Cu (11) complexes 1-(4-nitropheny1) imino] methy1) naphthalen-2-ol†Chemsearch journal. 10 (1):38 -45

Oriel S, Sorenlis G, R.H.P, Angel L, Yokoy, David C, Mercedes F, Peter T, Izaskun U, Hector R.R Joseph T.O, William C, Maria C.G (2016), polyhedron: 110:14-23.

Sani S and Lawal AM (2017): Liquid – assisted mechanochemical synthesis: green Approach to synthesis of Co (11) Schiff base complex and of antimicrobial activities†international journal of innovative research and development. 6(12)79-86

Sarika V, Sarita S and Poonam R. (2012), Synthesis and spectroscopic studies of mixed ligand complexes of transition and inner transition metals with a substituted benzimidazole derivative and RNA bases. J. Chem. Pharmaceut. Res. 4(1): 693 – 699.

Selvaganapathy M and Raman N (2016); Pharmacological Activity of a few Transition metal complexes: A short Review, Journal of chemical Biology and Therapeutics. 1(2):1-17.

Published

2022-01-17

How to Cite

Oduyebo, O. F., Ono, M. N., & Eteje, S. O. (2022). VERIFICATION OF THE CONSISTENCY OF THE PROPOSED TRANSFORMATION OF GLOBAL GEOID METHOD ACCURACY FOR LOCAL GEOID MODEL OF NIGERIA DETERMINATION. FUDMA JOURNAL OF SCIENCES, 5(4), 49 - 55. https://doi.org/10.33003/fjs-2021-0504-780