Levelling detail for

Benchmark positionning related to the tide gauge station

2003-11-13

Benchmarks description table

SOURCE : FOM 2022

Levelling campain :

Benchmark	Latitude (°)	Longitude (°)	Height (m)	Distance to Tide Gauge (m)
A	51.04861111	2.36475000	9.504	140
J	----	----	8.314	----
L	----	----	8.641	----
P	----	----	8.057	----
DUNQ	----	----	10.241	----
R	----	----	8.403	----
S	----	----	7.898	----
T	----	----	8.787	----
V	----	----	8.397	----
X	----	----	7.846	----
G	----	----	8.180	----
H	----	----	8.368	----

Legend : Fondamental benchmark

Benchmarks vertical positionning diagram

Reference:

Leveling evolution

Stand point			A	A	A	A	A	A	5918304-a	O	P	J	J	J	C
End point			J	L	5918304-a	O	P	DUNQ	J	J	J	C	L	A	Q
Distance (m)			----	----	139	----	----	----	----	----	----	----	----	----	----
Height difference (m)	Campaign 6	2022-04-25	---	---	---	---	---	---	---	---	---	---	---	---	---
	Campaign 5	2021-11-26	---	---	---	---	---	---	---	---	---	---	---	---	---
	Campaign 4	2018-01-01	---	---	---	---	---	---	---	---	---	---	---	---	---
	Campaign 3	2016-01-01	---	---	---	---	---	---	---	---	---	---	---	---	---
	Campaign 2	2013-02-28	-1.1908 ± 0.001	-0.8636 ± 0.001	-1.5944 ± 0.001	-1.4980 ± 0.001	-1.4467 ± 0.001	0.7367 ± 0.001	---	---	---	---	---	---	---
	Campaign 1	2003-11-13	---	---	---	---	---	---	0.4090 ± 0.001	0.3090 ± 0.001	0.2570 ± 0.001	0.0820 ± 0.001	0.3280 ± 0.001	1.1930 ± 0.001	0.1750 ± 0.01
Height difference evolution graph

Download leveling data

TIDE GAUGE LOCAL LEVELING NETWORK DATA OF STATION Coudekerque-Branche ----------------------------------------------------------------------------------------------------- Benchmark Lat. Long. Height Year of determination St.dev Distance_to_TG 10chr (°) 14chr (°) 14chr (m) 10chr 22chr (m)10chr (m) 10chr ----------------------------------------------------------------------------------------------------- A 51.048611 2.364750 9.504 2022 0.00000 2930 C ---- ---- 12.089 2003 0.00100 ---- J ---- ---- 8.314 2022 0.00100 ---- L ---- ---- 8.641 2022 0.00100 ---- 5918304-a 51.048092 2.366557 11.606 2013 0.00100 2850 O ---- ---- 11.702 2013 0.00100 ---- P ---- ---- 8.057 2022 0.00100 ---- Q ---- ---- 12.264 2003 0.01100 ---- DUNQ ---- ---- 10.241 2022 0.00100 ---- R ---- ---- 8.403 2022 0.00100 ---- S ---- ---- 7.898 2022 0.00100 ---- T ---- ---- 8.787 2022 0.00100 ---- V ---- ---- 8.397 2022 0.00100 ---- X ---- ---- 7.846 2022 0.00100 ---- G ---- ---- 8.180 2022 0.00100 ---- H ---- ---- 8.368 2022 0.00100 ---- DUNQ_ARP ---- ---- 12.423 2021 0.00200 ----

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Co-located instruments

Tide Gauge : DUNKERQUE (DUNKE)
GPS : Coudekerque-Branche (COUD)
GPS : Dunkerque Grand Littoral Géomatique (DGLG)
GPS : Dunkerque (DUNQ)