@article{fdi:010076060,
  title = {{A} high-resolution gravimetric quasigeoid model for {V}ietnam},
  author = {{V}u, {D}. {T}. and {B}ruinsma, {S}. and {B}onvalot, {S}ylvain},
  editor = {},
  language = {{ENG}},
  abstract = {{A} high-resolution gravimetric quasigeoid model for {V}ietnam and its surrounding areas was determined based on new gravity data. {A} set of 29,121 land gravity measurements was used in combination with fill-in data where no gravity data existed. {G}lobal {G}ravity field {M}odels plus {R}esidual {T}errain {M}odel effects and gravity field derived from altimetry satellites were used to provide the fill-in information over land and marine areas. {A} mixed model up to degree/order 719 was used for the removal of the long and medium wavelengths and the calculation of the quasigeoid restore effects. {T}he residual height anomalies have been determined employing the {S}tokes integral using the {F}ast {F}ourier {T}ransform approach and deterministic kernel modification proposed by {W}ong-{G}ore, as well as by means of {L}east-{S}quares {C}ollocation. {T}he accuracy of the resulting quasigeoid models was evaluated by comparing with height anomalies derived from 812 co-located {GNSS}/levelling points. {R}esults are very similar; both local quasigeoid models have a standard deviation of 9.7cm and 50cm in mean bias when compared to the {GNSS}/levelling points. {T}his new local quasigeoid model for {V}ietnam represents a significant improvement over the global models {EIGEN}-6{C}4 and {EGM}2008, which have standard deviations of 19.2 and 29.1cm, respectively, for this region.},
  keywords = {{R}egional quasigeoid ; {G}ravity anomalies ; {L}east-{S}quares {C}ollocation ; {S}tokes {FFT} ; {GNSS} ; levelling ; {VIET} {NAM}},
  booktitle = {},
  journal = {{E}arth {P}lanets and {S}pace},
  volume = {71},
  numero = {},
  pages = {65 [16 ]},
  ISSN = {1880-5981},
  year = {2019},
  DOI = {10.1186/s40623-019-1045-3},
  URL = {https://www.documentation.ird.fr/hor/fdi:010076060},
}