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Presentation
Aims and rationale
Origin of SONEL
Scientific & technical partners
Observations
Tide gauges
GNSS
Stability of the datums
Doris
Absolute gravimetry
Station management
Products (demonstrative)
Sea level trends
Vertical land movements
Horizontal land movements
Waves
Web Services
Programmes (GLOSS)
Global Sea Level Observing System (GLOSS)
PSMSL
TIGA
CGPS@TG
Users
Applications
Publications
Statistics
Documentation
Partners & Contacts
GNSS Data Providers
SONEL contacts
Station manager only
or
ULR authentication
REPERE GEODESIQUE BREST-4
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Levelling
> Benchmark BREST-4
Benchmark detailed description
"Rivet, scellé sur le quai à droite de la passerelle d'accès au marégraphe."
Benchmarks names by campaign and organism
01/10/1993
30/06/1996
04/03/2002
03/04/2006
02/07/2013
21/06/2018
18/04/2024
26/09/2025
SHOM
SHOM
SHOM
SHOM
SHOM
SHOM
SHOM
SHOM
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Data policy
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