@article{fdi:010082108,
title = {{T}he first pan-{A}lpine surface-gravity database, a modern compilation that crosses frontiers},
author = {{Z}ahorec, {P}. and {P}apco, {J}. and {P}asteka, {R}. and {B}ielik, {M}. and {B}onvalot, {S}ylvain and {B}raitenberg, {C}. and {E}bbing, {J}. and {G}abriel, {G}. and {G}osar, {A}. and {G}rand, {A}. and {G}otze, {H}. {J}. and {H}etenyi, {G}. and {H}olzrichter, {N}. and {K}issling, {E}. and {M}arti, {U}. and {M}eurers, {B}. and {M}rlina, {J}. and {N}ogova, {E}. and {P}astorutti, {A}. and {S}alaun, {C}. and {S}carponi, {M}. and {S}ebera, {J}. and {S}eoane, {L}. and {S}kiba, {P}. and {S}zucs, {E}. and {V}arga, {M}.},
editor = {},
language = {{ENG}},
abstract = {{T}he {A}lp{A}rray {G}ravity {R}esearch {G}roup ({AAGRG}), as part of the {E}uropean {A}lp{A}rray program, focuses on the compilation of a homogeneous surface-based gravity data set across the {A}lpine area. {I}n 2017 10 {E}uropean countries in the {A}lpine realm agreed to contribute with gravity data for a new compilation of the {A}lpine gravity field in an area spanning from 2 to 23 degrees {E} and from 41 to 51 degrees {N}. {T}his compilation relies on existing national gravity databases and, for the {L}igurian and the {A}driatic seas, on shipborne data of the {S}ervice {H}ydrographique et {O}ceanographique de la {M}arine and of the {B}ureau {G}ravimetrique {I}nternational. {F}urthermore, for the {I}vrea zone in the {W}estern {A}lps, recently acquired data were added to the database. {T}his first pan-{A}lpine gravity data map is homogeneous regarding input data sets, applied methods and all corrections, as well as reference frames. {H}ere, the {AAGRG} presents the data set of the recalculated gravity fields on a 4 km x 4 km grid for public release and a 2 km x 2 km grid for special request. {T}he final products also include calculated values for mass and bathymetry corrections of the measured gravity at each grid point, as well as height. {T}his allows users to use later customized densities for their own calculations of mass corrections. {C}orrection densities used are 2670 kgm(-3) for landmasses, 1030 kgm(-3) for water masses above the ellipsoid and 1640 kgm(-3) for those below the ellipsoid and 1000 kgm(-3) for lake water masses. {T}he correction radius was set to the {H}ayford zone {O}-2 (167 km). {T}he new {B}ouguer anomaly is station completed ({CBA}) and compiled according to the most modern criteria and reference frames (both positioning and gravity), including atmospheric corrections. {S}pecial emphasis was put on the gravity effect of the numerous lakes in the study area, which can have an effect of up to 5 m{G}al for gravity stations located at shorelines with steep slopes, e.g., for the rather deep reservoirs in the {A}lps. {T}he results of an error statistic based on cross validations and/or "interpolation residuals" are provided for the entire database. {A}s an example, the interpolation residuals of the {A}ustrian data set range between about -8 and +8 m{G}al and the cross-validation residuals between -14 and +10 m{G}al; standard deviations are well below 1 m{G}al. {T}he accuracy of the newly compiled gravity database is close to +/- 5 m{G}al for most areas. {A} first interpretation of the new map shows that the resolution of the gravity anomalies is suited for applications ranging from intra-crustal- to crustal-scale modeling to interdisciplinary studies on the regional and continental scales, as well as applications as joint inversion with other data sets. {T}he data are published with the {DOI} https://doi.org/10.5880/fidgeo.2020.045 ({Z}ahorec et al., 2021) via {GFZ} {D}ata {S}ervices.},
keywords = {{F} 010082108 ; {EUROPE} ; {ALPES} ; {LIGURE} {MER} ; {ADRIATIQUE} {MER}},
booktitle = {},
journal = {{E}arth {S}ystem {S}cience {D}ata},
volume = {13},
numero = {5},
pages = {2165--2209},
ISSN = {1866-3508},
year = {2021},
DOI = {10.5194/essd-13-2165-2021},
URL = {https://www.documentation.ird.fr/hor/fdi:010082108},
}