Levelling detail for DAKAR

Benchmark positionning related to the tide gauge station

1991-09-12

2008-06-03

Benchmarks description table

SOURCE : Franch IGN campaign - Jean-Claude Poyard report (RT 126)

Levelling campain :

SONEL ID	Benchmark	Latitude (°)	Longitude (°)	Height (m)	Distance to Tide Gauge (m)	Installation date	Destruction date
DAKAR-1	13601 A	----	----	9.283	----	----	----
DAKAR-2	13601 B	----	----	9.211	----	----	----
DAKAR-3	13601 C	----	----	---	----	----	----
DAKAR-4	UH C	----	----	8.505	----	----	----
DAKAR-5	BM 21	----	----	9.100	----	----	----
DAKAR-6	UH D	----	----	---	----	----	----
DAKAR-7	AQ	----	----	---	----	----	----
DAKAR-8	13601 D	----	----	---	----	----	----
DAKAR-9	13601 E	----	----	---	----	----	----
DAKAR-10	F	----	----	---	----	----	----
DAKAR-11	G	----	----	---	----	----	----
DAKAR-12	H	----	----	---	----	----	----
DAKAR-13	I	----	----	---	----	----	----
DAKAR-14	A	----	----	---	----	----	----
DAKAR-15	B	----	----	---	----	----	----
DAKAR-19	MARE	----	----	10.842	----	----	----
DAKAR-20	RN-DTGC	----	----	19.152	----	----	----
DAKAR-21	DAKA	----	----	22.306	----	----	----
DAKAR-22	DAKR	----	----	27.964	----	----	----

GPS Benchmark is in red

Benchmarks vertical positionning diagram

Leveling evolution

Stand point			DAKAR-1	DAKAR-1	DAKAR-1	DAKAR-1	DAKAR-1	DAKAR-1	DAKAR-1	DAKAR-1	DAKAR-1	DAKAR-1	DAKAR-20	DAKAR-22	DAKAR-22	DAKAR-14	DAKAR-14	DAKAR-14	DAKAR-14	DAKAR-14	DAKAR-14	DAKAR-18
End point			DAKAR-20	DAKAR-5	DAKAR-4	DAKAR-2	DAKAR-19	DAKAR-6	DAKAR-9	DAKAR-3	DAKAR-7	DAKAR-8	DAKAR-22	DAKAR-21	DAKAR-19	DAKAR-10	DAKAR-15	DAKAR-1	DAKAR-13	DAKAR-12	DAKAR-11	DAKAR-5
Distance (m)			----	----	----	----	----	----	----	----	----	----	----	----	----	----	----	----	----	----	----	----
Height difference (m)	Campaign 10	2011-10-15	9.8698 ± 0.001	-0.1827 ± 0.001	-0.7774 ± 0.001	-0.0713 ± 0.001	1.5589 ± 0.001						8.8203 ± 0.002	-5.6580 ± 0.002	-17.1220 ± 0.002
	Instrument type	----	9.8698 ± 0.001	-0.1827 ± 0.001	-0.7774 ± 0.001	-0.0713 ± 0.001	1.5589 ± 0.001						8.8203 ± 0.002	-5.6580 ± 0.002	-17.1220 ± 0.002
	Campaign 9	2008-06-03			-0.7780 ± 0.001	-0.0730 ± 0.001		-0.4600 ± 0.001								0.0260 ± 0.001	0.1380 ± 0.001	0.9630 ± 0.001	1.3290 ± 0.001	1.5540 ± 0.001	1.6650 ± 0.001
	Instrument type	----			-0.7780 ± 0.001	-0.0730 ± 0.001		-0.4600 ± 0.001								0.0260 ± 0.001	0.1380 ± 0.001	0.9630 ± 0.001	1.3290 ± 0.001	1.5540 ± 0.001	1.6650 ± 0.001
	Campaign 8	2007-10-19			-0.7779 ± 0.001	-0.0738 ± 0.001		-0.4612 ± 0.001	-0.7672 ± 0.001
	Instrument type	----			-0.7779 ± 0.001	-0.0738 ± 0.001		-0.4612 ± 0.001	-0.7672 ± 0.001
	Campaign 7	2005-06-08														0.0260 ± 0.001			1.3290 ± 0.001	1.5540 ± 0.001	1.6650 ± 0.001
	Instrument type	----														0.0260 ± 0.001			1.3290 ± 0.001	1.5540 ± 0.001	1.6650 ± 0.001
	Campaign 6	2003-05-06														0.0260 ± 0.001					1.6650 ± 0.001
	Instrument type	----														0.0260 ± 0.001					1.6650 ± 0.001
	Campaign 5	2000-03-20				-0.0765 ± 0.001				-0.7595 ± 0.001	1.3270 ± 0.001
	Instrument type	----				-0.0765 ± 0.001				-0.7595 ± 0.001	1.3270 ± 0.001
	Campaign 4	1995-09-21				-0.0768 ± 0.001				-0.7586 ± 0.001	1.3295 ± 0.001
	Instrument type	----				-0.0768 ± 0.001				-0.7586 ± 0.001	1.3295 ± 0.001
	Campaign 3	1994-04-25				-0.0770 ± 0.001			-0.7628 ± 0.001	-0.7592 ± 0.001		-0.3614 ± 0.001
	Instrument type	----				-0.0770 ± 0.001			-0.7628 ± 0.001	-0.7592 ± 0.001		-0.3614 ± 0.001
	Campaign 2	1992-05-01				-0.0774 ± 0.001			-0.7631 ± 0.001	-0.7599 ± 0.001	1.3298 ± 0.001	-0.3613 ± 0.001
	Instrument type	----				-0.0774 ± 0.001			-0.7631 ± 0.001	-0.7599 ± 0.001	1.3298 ± 0.001	-0.3613 ± 0.001
	Campaign 1	1991-09-12				-0.0775 ± 0.001				-0.7599 ± 0.001	1.3286 ± 0.001	-0.3631 ± 0.001										9.0870 ± 0.001
	Instrument type	----				-0.0775 ± 0.001				-0.7599 ± 0.001	1.3286 ± 0.001	-0.3631 ± 0.001										9.0870 ± 0.001
Height difference evolution graph

Download leveling data

TIDE GAUGE LOCAL LEVELING NETWORK DATA OF STATION DAKAR ----------------------------------------------------------------------------------------------------- Benchmark Lat. Long. Height Year of determination St.dev Distance_to_TG 10chr (°) 14chr (°) 14chr (m) 10chr 22chr (m)10chr (m) 10chr ----------------------------------------------------------------------------------------------------- DAKAR-1 ---- ---- 9.283 2011 0.00100 ---- DAKAR-2 ---- ---- 9.211 2011 0.00200 ---- DAKAR-3 ---- ---- 8.510 2000 0.00100 ---- DAKAR-4 ---- ---- 8.505 2011 0.00200 ---- DAKAR-5 ---- ---- 9.100 2011 0.00000 ---- DAKAR-6 ---- ---- 8.803 2008 0.00200 ---- DAKAR-7 ---- ---- 10.596 2000 0.00100 ---- DAKAR-8 ---- ---- 8.898 1994 0.00100 ---- DAKAR-9 ---- ---- 8.502 2007 0.00100 ---- DAKAR-10 ---- ---- 8.326 2008 0.00100 ---- DAKAR-11 ---- ---- 9.965 2008 0.00100 ---- DAKAR-12 ---- ---- 9.854 2008 0.00100 ---- DAKAR-13 ---- ---- 9.629 2008 0.00100 ---- DAKAR-14 ---- ---- 8.300 2008 0.00000 ---- DAKAR-15 ---- ---- 8.438 2008 0.00100 ---- DAKAR-19 ---- ---- 10.842 2011 0.00200 ---- DAKAR-20 ---- ---- 19.152 2011 0.00200 ---- DAKAR-21 ---- ---- 22.306 2011 0.00400 ---- DAKAR-22 ---- ---- 27.964 2011 0.00300 ---- LEVELING DATA ----------------------------------------------------------------------------------------------------- Stand p. End p. Height_Diff St.Dev. Distance Epoch of Obs. Technique.Type (10 chr) (10 chr) (m) 12chr (m)8chr (m)9chr (year)14chr (15 chr) ----------------------------------------------------------------------------------------------------- DAKAR-1 DAKAR-20 9.8698 0.00100 ---- 2011-10-15 ---- DAKAR-1 DAKAR-5 -0.1827 0.00100 ---- 2011-10-15 ---- DAKAR-1 DAKAR-4 -0.7774 0.00100 ---- 2011-10-15 ---- DAKAR-1 DAKAR-2 -0.0713 0.00100 ---- 2011-10-15 ---- DAKAR-1 DAKAR-19 1.5589 0.00100 ---- 2011-10-15 ---- DAKAR-20 DAKAR-22 8.8203 0.00200 ---- 2011-10-15 ---- DAKAR-22 DAKAR-21 -5.6580 0.00200 ---- 2011-10-15 ---- DAKAR-22 DAKAR-19 -17.1220 0.00200 ---- 2011-10-15 ---- DAKAR-14 DAKAR-10 0.0260 0.00100 ---- 2008-06-03 ---- DAKAR-14 DAKAR-15 0.1380 0.00100 ---- 2008-06-03 ---- DAKAR-14 DAKAR-1 0.9630 0.00100 ---- 2008-06-03 ---- DAKAR-14 DAKAR-13 1.3290 0.00100 ---- 2008-06-03 ---- DAKAR-14 DAKAR-12 1.5540 0.00100 ---- 2008-06-03 ---- DAKAR-14 DAKAR-11 1.6650 0.00100 ---- 2008-06-03 ---- DAKAR-1 DAKAR-4 -0.7780 0.00100 ---- 2008-06-03 ---- DAKAR-1 DAKAR-6 -0.4600 0.00100 ---- 2008-06-03 ---- DAKAR-1 DAKAR-2 -0.0730 0.00100 ---- 2008-06-03 ---- DAKAR-1 DAKAR-2 -0.0738 0.00100 ---- 2007-10-19 ---- DAKAR-1 DAKAR-4 -0.7779 0.00100 ---- 2007-10-19 ---- DAKAR-1 DAKAR-6 -0.4612 0.00100 ---- 2007-10-19 ---- DAKAR-1 DAKAR-9 -0.7672 0.00100 ---- 2007-10-19 ---- DAKAR-14 DAKAR-11 1.6650 0.00100 ---- 2005-06-08 ---- DAKAR-14 DAKAR-10 0.0260 0.00100 ---- 2005-06-08 ---- DAKAR-14 DAKAR-12 1.5540 0.00100 ---- 2005-06-08 ---- DAKAR-14 DAKAR-13 1.3290 0.00100 ---- 2005-06-08 ---- DAKAR-14 DAKAR-11 1.6650 0.00100 ---- 2003-05-06 ---- DAKAR-14 DAKAR-10 0.0260 0.00100 ---- 2003-05-06 ---- DAKAR-1 DAKAR-2 -0.0765 0.00100 ---- 2000-03-20 ---- DAKAR-1 DAKAR-3 -0.7595 0.00100 ---- 2000-03-20 ---- DAKAR-1 DAKAR-7 1.3270 0.00100 ---- 2000-03-20 ---- DAKAR-1 DAKAR-2 -0.0768 0.00100 ---- 1995-09-21 ---- DAKAR-1 DAKAR-3 -0.7586 0.00100 ---- 1995-09-21 ---- DAKAR-1 DAKAR-7 1.3295 0.00100 ---- 1995-09-21 ---- DAKAR-1 DAKAR-2 -0.0770 0.00100 ---- 1994-04-25 ---- DAKAR-1 DAKAR-3 -0.7592 0.00100 ---- 1994-04-25 ---- DAKAR-1 DAKAR-8 -0.3614 0.00100 ---- 1994-04-25 ---- DAKAR-1 DAKAR-9 -0.7628 0.00100 ---- 1994-04-25 ---- DAKAR-1 DAKAR-2 -0.0774 0.00100 ---- 1992-05-01 ---- DAKAR-1 DAKAR-3 -0.7599 0.00100 ---- 1992-05-01 ---- DAKAR-1 DAKAR-8 -0.3613 0.00100 ---- 1992-05-01 ---- DAKAR-1 DAKAR-7 1.3298 0.00100 ---- 1992-05-01 ---- DAKAR-1 DAKAR-9 -0.7631 0.00100 ---- 1992-05-01 ---- DAKAR-1 DAKAR-2 -0.0775 0.00100 ---- 1991-09-12 ---- DAKAR-1 DAKAR-3 -0.7599 0.00100 ---- 1991-09-12 ---- DAKAR-1 DAKAR-8 -0.3631 0.00100 ---- 1991-09-12 ---- DAKAR-1 DAKAR-7 1.3286 0.00100 ---- 1991-09-12 ----

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Co-located instrumentsDAKAR

GPS : Dakar (DAKA)
GPS : DAKAR (DAKR)
GPS : DATG (DATG)
Tide gauge : DAKAR (DAKAR)
Tide gauge : DAKAR 2 (DAKA2)

LEVELING OF DAKAR