Levelling detail for

Benchmark positionning related to the tide gauge station

2011-11-17

Benchmarks description table

SOURCE : FOM 3283

Levelling campain :

Benchmark	Latitude (°)	Longitude (°)	Height (m)	Distance to Tide Gauge (m)
S2	----	----	-1.978	----
A	----	----	-3.150	----
I	----	----	-2.519	----
G	----	----	-2.430	----
S1	----	----	-2.507	----
682	----	----	-1.112	----
U	----	----	---	----
F	----	----	-2.466	----
P	----	----	-2.401	----
683-1	----	----	-1.665	----
L	----	----	-2.449	----
R1	----	----	-1.853	----
R1'	----	----	-1.932	----
T	----	----	-2.629	----
V	----	----	-2.593	----

Legend : Fondamental benchmark

Benchmarks vertical positionning diagram

Reference:

Leveling evolution

Stand point			S2	S2	S2	S2	S2	S2	S2	S2	S2	S2	S2
End point			683	A	I	G	S1	682	R	R'	U	F	P
Distance (m)			----	----	----	----	----	----	----	----	----	----	----
Height difference (m)	Campaign 5	2025-03-26	---	---	---	---	---	---	---	---	---	---	---
	Campaign 4	2021-10-21	---	---	---	---	---	---	---	---	---	---	---
	Campaign 3	2018-01-11	---	---	---	---	---	---	---	---	---	---	---
	Campaign 2	2015-12-14	---	---	---	---	---	---	---	---	---	---	---
	Campaign 1	2011-11-17	-0.1090 ± 0.001	-1.1690 ± 0.001	-0.5360 ± 0.001	-0.4480 ± 0.001	-0.5270 ± 0.001	0.8670 ± 0.001	0.0890 ± 0.001	0.0770 ± 0.001	1.9990 ± 0.001	-0.5510 ± 0.001	-0.4220 ± 0.001
Height difference evolution graph

Download leveling data

TIDE GAUGE LOCAL LEVELING NETWORK DATA OF STATION VAIRAO ----------------------------------------------------------------------------------------------------- Benchmark Lat. Long. Height Year of determination St.dev Distance_to_TG 10chr (°) 14chr (°) 14chr (m) 10chr 22chr (m)10chr (m) 10chr ----------------------------------------------------------------------------------------------------- S2 ---- ---- -1.978 2025 0.00000 ---- 683 ---- ---- 1.869 2011 0.00100 ---- A ---- ---- -3.150 2025 0.00200 ---- I ---- ---- -2.519 2025 0.00200 ---- G ---- ---- -2.430 2025 0.00200 ---- S1 ---- ---- -2.507 2025 0.00100 ---- 682 ---- ---- -1.112 2025 0.00300 ---- R ---- ---- 2.060 2021 0.00200 ---- R' ---- ---- 2.048 2021 0.00200 ---- U ---- ---- 3.977 2021 0.00100 ---- F ---- ---- -2.466 2025 0.00200 ---- P ---- ---- -2.401 2025 0.00100 ---- 683-1 ---- ---- -1.665 2025 0.00300 ---- L ---- ---- -2.449 2025 0.00200 ---- R1 ---- ---- -1.853 2025 0.00200 ---- R1' ---- ---- -1.932 2025 0.00200 ---- T ---- ---- -2.629 2025 0.00200 ---- V ---- ---- -2.593 2025 0.00200 ----

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Co-located instruments

Tide Gauge : VAIRAO (VAIRA)
GPS : VAIRAO (VRTG)