Levelling detail for

Benchmark positionning related to the tide gauge station

2004-04-16

Benchmarks description table

SOURCE : FOM 3272

Levelling campain :

Benchmark	Latitude (°)	Longitude (°)	Height (m)	Distance to Tide Gauge (m)
D	43.39519444	-1.68163889	12.460	10
H	43.39508333	-1.68280556	10.976	100
J	43.39600000	-1.68294444	12.464	140
L	43.39515567	-1.68173698	12.158	10
O	----	----	12.613	----
Plaque MCN	----	----	12.611	----
S	----	----	10.771	----
T	----	----	11.361	----
V	----	----	10.594	----
W	----	----	10.388	----

Legend : Fondamental benchmark

Benchmarks vertical positionning diagram

Reference:

Leveling evolution

Stand point			E 5m	J	D	D	O	Plaque MCN	H	Q	Q	L	L
End point			D	D	O	SCOA	Plaque MCN	N	Q	L	J	D	N
Distance (m)			----	139	----	5	----	----	----	----	----	9	----
Height difference (m)	Campaign 6	2025-02-10	---	---	---	---	---	---	---	---	---	---	---
	Campaign 5	2017-05-22	---	---	---	---	---	---	---	---	---	---	---
	Campaign 4	2015-06-26	---	---	---	---	---	---	---	---	---	---	---
	Campaign 3	2007-05-17	2.9648 ± 0.0005	0.0053 ± 0.0005	0.1495 ± 0.0005	---	0.0070 ± 0.0005	0.0059 ± 0.0005	---	---	---	---	---
	Campaign 2	2005-12-12	---	---	---	4.8830 ± 0.0001	---	---	---	---	---	---	---
	Campaign 1	2004-04-16	---	---	0.1480 ± 0.001	---	---	---	0.4800 ± 0.001	0.7100 ± 0.001	1.0080 ± 0.001	0.3010 ± 0.001	0.4620 ± 0.001
Height difference evolution graph

Download leveling data

TIDE GAUGE LOCAL LEVELING NETWORK DATA OF STATION Socoa ----------------------------------------------------------------------------------------------------- Benchmark Lat. Long. Height Year of determination St.dev Distance_to_TG 10chr (°) 14chr (°) 14chr (m) 10chr 22chr (m)10chr (m) 10chr ----------------------------------------------------------------------------------------------------- D 43.395194 -1.681639 12.460 2025 0.00000 10 H 43.395083 -1.682806 10.976 2025 0.00100 100 J 43.396000 -1.682944 12.464 2025 0.00100 140 L 43.395156 -1.681737 12.158 2025 0.00100 10 N ---- ---- 12.624 2017 0.00100 ---- O ---- ---- 12.613 2025 0.00200 ---- Q ---- ---- 11.424 2017 0.00100 ---- Plaque MCN ---- ---- 12.611 2025 0.00200 ---- E 5m ---- ---- 9.495 2007 0.00100 ---- SCOA 43.395232 -1.681682 17.348 2017 0.00100 0 S ---- ---- 10.771 2025 0.00100 ---- T ---- ---- 11.361 2025 0.00100 ---- V ---- ---- 10.594 2025 0.00100 ---- W ---- ---- 10.388 2025 0.00100 ----

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Co-located instruments

GPS : Socoa (SCOA)
Tide Gauge : SAINT JEAN-DE-LUZ (SJLUZ)