@article{fdi:010090538,
  title = {{P}otential of cold-atom airborne gravimetry to improve coastal gravity field and quasigeoid modelling},
  author = {{V}u, {D}. {T}. and {B}onvalot, {S}ylvain and {S}eoane, {L}. and {G}abalda, {G}erminal and {R}{\'e}my, {D}ominique and {B}ruinsma, {S}. and {B}idel, {Y}. and {B}resson, {A}. and {Z}ahzam, {N}. and {R}ouxel, {D}. and {S}alauen, {C}. and {L}alancette, {M}. {F}. and {F}orsberg, {R}. and {J}ensen, {T}. and {J}amet, {O}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e investigate using the {GIRAFE} cold-atom gravimeter during an airborne gravity survey for improving gravity field and quasigeoid modelling. {T}he study is conducted over the {B}ay of {B}iscay, {F}rance. {G}eoid/quasigeoid determination is usually a major challenge over such coastal areas due to scarce and inconsistent gravity data. {I}n a first step, the {GIRAFE} dataset is analysed and compared with available surface gravity data as well as with global altimetry models from {UCSD} and {DTU}. {T}he comparisons indicate that the {DTU} model is better than the {UCSD} model within around 10 km from the coastline. {F}urthermore, recent satellite altimeter missions significantly improve the altimetry models in coastal areas. {A} significant bias (- 4.00 m{G}al) in shipborne data is also found from this comparison. {I}n a second step, eight quasigeoid solutions are calculated to evaluate the contribution of {GIRAFE} data. {T}his contribution reaches 3 cm in terms of height anomaly for {DTU}21 while being much larger for {UCSD}v31 and shipborne data. {F}inally, the quasigeoid solutions are validated using {GNSS}-levelling data. {T}he results indicate that using {GIRAFE} data improves by approximately 50% the quality of quasigeoid models over land near the coast. {T}he highest accuracy, around 1 cm, is achieved when {GIRAFE} data are merged with refined gravity data. {I}mportantly, the standard deviation is just 1.2 cm when compared with {GNSS}-levelling points if using only {GIRAFE} data over marine areas, which is very close to the 1 cm goal of geoid/quasigeoid model determination in modern geodesy. {T}his study thus confirms the benefits of performing airborne gravity survey using quantum sensors.},
  keywords = {{A}bsolute airborne gravity ; {Q}uantum gravimeter ; {S}atellite altimetry ; {S}hipborne gravity ; {Q}uasigeoid ; {GNSS}-levelling},
  booktitle = {},
  journal = {{J}ournal of {G}eodesy},
  volume = {98},
  numero = {4},
  pages = {28 [20 ]},
  ISSN = {0949-7714},
  year = {2024},
  DOI = {10.1007/s00190-024-01839-0},
  URL = {https://www.documentation.ird.fr/hor/fdi:010090538},
}