11.7.2 Réseau Pluies Acides
L'acidification de l'environnement par les retombées humides
est un problème environnemental à l'échelle
continentale. En effet, la charge contenue dans la pluie dépend,
à la fois, de l'air dans lequel les gouttelettes ont transité
et de l'air dans lequel le nuage s'est formé. Les cinq
stations du Réseau Pluies Acides sont donc réparties
de manière à quadriller la Région wallonne
en évitant, autant que possible, les zones industrielles
pour ne pas être influencées par une pollution qui
serait purement locale.
Les Tableaux 224 à 238 reprennent la composition de l'eau
moyenne, ainsi que le bilan ionique et la distribution de fréquences
des dépôts humides pour chaque station.
Peruwelz, boulevard Léopold III,
58
| PANT01
| 1996
| Hiver
10/96 - 03/97
| Eté
04/97 - 09/97
| 1997
|
| Volume (mm)
| 525.50
| 240.17
| 279.89
| 554.72
|
| Conductivité (µS/cm)
| 29.85
| 35.68
| 20.95
| 24.19
|
| pH | 5.28
| 5.68
| 5.03
| 5.08
|
| Na+ (mg/l)
| 3.31
| 6.35
| 0.55
| 1.14
|
| K+ (mg/l)
| 1.06
| 1.46
| 0.51
| 1.01
|
| Ca++ (mg/l)
| 1.31
| 1.80
| 0.83
| 0.97
|
| Mg++ (mg/l)
| 0.26
| 0.45
| 0.09
| 0.15
|
| NH4+ (mg[N]/l)
| 1.08
| 1.00
| 0.88
| 0.71
|
| Cl- (mg/l)
| 2.41
| 4.24
| 1.22
| 2.39
|
| F- (mg/l)
| 0.10
| 0.19
| 0.03
| 0.04
|
| NO3- (mg[N])/l)
| 0.57
| 0.52
| 0.64
| 0.49
|
| SO4= (mg[S]/l)
| 1.15
| 1.22
| 0.81
| 0.90
|
| PO43- (mg[P]/l)
| 0.05
| 0.09
| 0.02
| 0.03
|
Tableau 224 :
Réseau Pluies Acides - Eau moyenne - Peruwelz, boulevard
Léopold III, 58
| PANT01
| 1996
| Hiver
10/96 - 03/97
| Eté
04/97 - 09/97
| 1997
|
| H+ (µeq/l)
| 5.26
| 2.11
| 9.29
| 8.34
|
| Na+ (µeq/l)
| 144.13
| 276.05
| 24.11
| 49.75
|
| K+ (µeq/l)
| 27.22
| 37.44
| 13.09
| 25.76
|
| Ca++ (µeq/l)
| 65.32
| 36.84
| 7.60
| 11.97
|
| Mg++ (µeq/l)
| 21.05
| 89.86
| 41.20
| 48.24
|
| NH4+ (µeq/l)
| 77.01
| 82.66
| 72.22
| 58.42
|
| Cl- (µeq/l)
| 68.05
| 119.54
| 34.55
| 67.38
|
| F- (µeq/l)
| 5.17
| 10.16
| 1.75
| 1.85
|
| NO3- (µeq/l)
| 40.48
| 36.82
| 46.00
| 35.03
|
| SO4= (µeq/l)
| 71.84
| 75.98
| 50.49
| 56.06
|
| PO43- (µeq/l)
| 4.65
| 9.05
| 1.61
| 2.47
|
| Somme des cations
| 339.99
| 524.96
| 167.51
| 202.47
|
| Somme des anions
| 190.20
| 251.55
| 134.40
| 162.79
|
Tableau 225 :
Réseau Pluies Acides - Composition ionique - Peruwelz,
boulevard Léopold III, 58
PANT01
1996
|
Nombre de jours
| Nombre de jours de pluie valides
|
Moyenne
|
Médiane
|
P90
|
P95
|
P98
|
| Volume (mm)
| 357 |
138
| 3.81
| 1.98
| 9.63
| 13.63
| 18.11
|
| H+ (µeq/m².j)
| 357 |
120
| 164.00
| 21.52
| 341.08
| 939.40
| 1831.68
|
| Na+ (mg/m².j)
| 357 |
111
| 15.46
| 4.24
| 25.54
| 62.47
| 168.07
|
| K+ (mg/m².j)
| 357 |
111
| 4.97
| 2.28
| 11.26
| 18.65
| 26.43
|
| Ca2+ (mg/m².j)
| 357 |
111
| 6.11
| 3.17
| 14.95
| 24.68
| 36.22
|
| Mg2+(mg/m².j)
| 357 |
111
| 1.19
| 0.59
| 2.31
| 4.08
| 7.48
|
| Cl- (mg/m².j)
| 357 |
114
| 10.98
| 5.16
| 26.00
| 39.30
| 54.33
|
| F- (mg/m².j)
| 357 |
114
| 0.45
| 0.10
| 0.50
| 2.42
| 5.68
|
NH4+
(mg[N]/m².j)
| 357 |
111
| 5.03
| 3.30
| 11.19
| 16.42
| 20.20
|
NO3-
(mg[N]/m².j)
| 357 |
114
| 2.58
| 1.79
| 5.25
| 7.15
| 12.27
|
SO4=
(mg[S]/m².j)
| 357 |
114
| 5.24
| 3.64
| 11.52
| 16.15
| 22.41
|
PO43-
(mg[P]/m².j)
| 357 |
114
| 0.22
| 0.00
| 0.33
| 1.56
| 3.10
|
PANT01
1997
|
Nombre de jours
| Nombre de jours de pluie valides
|
Moyenne
|
Médiane
|
P90
|
P95
|
P98
|
| Volume (mm)
| 365 |
163
| 3.40
| 2.01
| 9.04
| 11.84
| 14.96
|
| H+ (µeq/m².j)
| 365 |
132
| 34.87
| 5.34
| 87.24
| 136.37
| 320.70
|
| Na+ (mg/m².j)
| 365 |
122
| 5.15
| 2.87
| 11.07
| 16.35
| 30.25
|
| K+ (mg/m².j)
| 365 |
122
| 4.53
| 1.91
| 9.68
| 16.03
| 31.00
|
| Ca2+ (mg/m².j)
| 365 |
122
| 4.35
| 2.56
| 9.22
| 10.48
| 19.47
|
| Mg2+(mg/m².j)
| 365 |
122
| 0.65
| 0.46
| 1.31
| 1.76
| 3.34
|
| Cl- (mg/m².j)
| 365 |
124
| 10.59
| 5.61
| 25.32
| 37.63
| 63.88
|
| F- (mg/m².j)
| 365 |
124
| 0.16
| 0.09
| 0.29
| 0.58
| 0.89
|
NH4+
(mg[N]/m².j)
| 365 |
122
| 3.19
| 1.99
| 6.22
| 9.82
| 24.49
|
NO3-
(mg[N]/m².j)
| 365 |
124
| 2.18
| 1.29
| 3.78
| 7.14
| 14.50
|
SO4=
(mg[S]/m².j)
| 365 |
124
| 3.98
| 2.96
| 8.55
| 10.60
| 16.94
|
PO43-
(mg[P]/m².j)
| 365 |
123
| 0.11
| 0.00
| 0.15
| 0.52
| 1.87
|
Tableau 226 :
Réseau Pluies Acides - Distributions de fréquences
des dépôts - Peruwelz, boulevard Léopold III, 58
Haut de page
Autre réseau
Autre région
Virelles, Etang de Virelles
| PANT02
| 1996
| Hiver
10/96 - 03/97
| Eté
04/97 - 09/97
| 1997
|
| Volume (mm)
| 500.45
| 322.32
| 366.60
| 787.98
|
| Conductivité (µS/cm)
| 25.21
| 32.96
| 17.25
| 23.67
|
| pH | 5.55
| 5.73
| 5.08
| 5.29
|
| Na+ (mg/l)
| 2.48
| 4.20
| 0.79
| 2.09
|
| K+ (mg/l)
| 0.44
| 0.71
| 0.39
| 0.52
|
| Ca++ (mg/l)
| 1.40
| 1.61
| 0.83
| 0.93
|
| Mg++ (mg/l)
| 0.22
| 0.37
| 0.10
| 0.16
|
| NH4+ (mg[N]/l)
| 0.80
| 0.81
| 0.47
| 0.53
|
| Cl- (mg/l)
| 1.70
| 3.32
| 0.92
| 2.06
|
| F- (mg/l)
| 0.07
| 0.11
| 0.02
| 0.02
|
| NO3- (mg[N])/l)
| 0.59
| 0.53
| 0.49
| 0.49
|
| SO4= (mg[S]/l)
| 0.81
| 0.83
| 0.60
| 0.70
|
| PO43- (mg[P]/l)
| 0.03
| 0.05
| 0.00
| 0.00
|
Tableau 227 :
Réseau Pluies Acides - Eau moyenne - Virelles, Etang de
Virelles
| PANT02
| 1996
| Hiver
10/96 - 03/97
| Eté
04/97 - 09/97
| 1997
|
| H+ (µeq/l)
| 2.80
| 1.88
| 8.30
| 5.13
|
| Na+ (µeq/l)
| 107.71
| 182.51
| 34.33
| 91.01
|
| K+ (µeq/l)
| 11.18
| 18.10
| 9.86
| 13.22
|
| Ca++ (µeq/l)
| 69.62
| 30.17
| 7.90
| 13.09
|
| Mg++ (µeq/l)
| 17.90
| 80.37
| 41.44
| 46.56
|
| NH4+ (µeq/l)
| 57.20
| 66.33
| 38.54
| 43.38
|
| Cl- (µeq/l)
| 48.06
| 93.52
| 25.94
| 58.18
|
| F- (µeq/l)
| 3.92
| 5.76
| 0.89
| 0.93
|
| NO3- (µeq/l)
| 42.10
| 38.10
| 35.25
| 34.79
|
| SO4= (µeq/l)
| 50.40
| 52.07
| 37.32
| 43.55
|
| PO43- (µeq/l)
| 3.29
| 5.23
| 0.17
| 0.37
|
| Somme des cations
| 266.41
| 379.36
| 140.38
| 212.39
|
| Somme des anions
| 147.77
| 194.68
| 99.58
| 137.83
|
Tableau 228 :
Réseau Pluies Acides - Composition ionique - Virelles,
Etang de Virelles
PANT02
1996
|
Nombre de jours
| Nombre de jours de pluie valides
|
Moyenne
|
Médiane
|
P90
|
P95
|
P98
|
| Volume (mm)
| 366 |
138
| 3.63
| 1.66
| 8.35
| 14.78
| 23.04
|
| H+ (µeq/m².j)
| 366 |
119
| 119.31
| 21.52
| 290.30
| 592.72
| 1103.70
|
| Na+ (mg/m².j)
| 366 |
107
| 11.41
| 2.77
| 27.81
| 59.66
| 79.97
|
| K+ (mg/m².j)
| 366 |
107
| 2.02
| 1.37
| 4.48
| 5.32
| 8.91
|
| Ca2+ (mg/m².j)
| 366 |
107
| 6.43
| 3.27
| 13.20
| 17.65
| 24.03
|
| Mg2+(mg/m².j)
| 366 |
107
| 1.00
| 0.46
| 2.44
| 3.58
| 7.82
|
| Cl- (mg/m².j)
| 366 |
112
| 7.53
| 3.87
| 14.95
| 35.77
| 39.68
|
| F- (mg/m².j)
| 366 |
111
| 0.33
| 0.04
| 0.33
| 1.92
| 3.86
|
NH4+
(mg[N]/m².j)
| 366 |
107
| 3.69
| 2.56
| 8.34
| 13.29
| 14.84
|
NO3-
(mg[N]/m².j)
| 366 |
112
| 2.60
| 1.81
| 5.34
| 7.86
| 10.41
|
SO4=
(mg[S]/m².j)
| 366 |
112
| 3.57
| 2.31
| 8.61
| 12.83
| 14.15
|
PO43-
(mg[P]/m².j)
| 366 |
112
| 0.15
| 0.00
| 0.05
| 0.92
| 1.45
|
PANT02
1997
|
Nombre de jours
| Nombre de jours de pluie valides
|
Moyenne
|
Médiane
|
P90
|
P95
|
P98
|
| Volume (mm)
| 365 |
171
| 4.61
| 2.83
| 11.78
| 14.64
| 20.05
|
| H+ (µeq/m².j)
| 365 |
144
| 27.96
| 4.15
| 56.83
| 80.79
| 372.57
|
| Na+ (mg/m².j)
| 365 |
140
| 11.72
| 4.14
| 26.05
| 47.37
| 89.81
|
| K+ (mg/m².j)
| 365 |
140
| 2.90
| 1.46
| 7.74
| 10.34
| 15.76
|
| Ca2+ (mg/m².j)
| 365 |
141
| 5.19
| 3.78
| 10.98
| 15.39
| 24.18
|
| Mg2+(mg/m².j)
| 365 |
141
| 0.88
| 0.44
| 2.29
| 3.32
| 5.72
|
| Cl- (mg/m².j)
| 365 |
140
| 11.55
| 5.35
| 29.12
| 47.17
| 84.96
|
| F- (mg/m².j)
| 365 |
140
| 0.10
| 0.06
| 0.29
| 0.43
| 0.47
|
NH4+
(mg[N]/m².j)
| 365 |
140
| 2.95
| 1.82
| 7.27
| 8.93
| 12.10
|
NO3-
(mg[N]/m².j)
| 365 |
140
| 2.73
| 1.73
| 6.35
| 10.96
| 14.32
|
SO4=
(mg[S]/m².j)
| 365 |
140
| 3.91
| 2.66
| 9.44
| 13.19
| 14.18
|
PO43-
(mg[P]/m².j)
| 365 |
139
| 0.02
| 0.00
| 0.00
| 0.11
| 0.19
|
Tableau 229 :
Réseau Pluies Acides - Distributions de fréquences
des dépôts - Virelles, Etang de Virelles
Haut de page
Autre réseau
Autre région
Gembloux, Faculté des Sciences Agronomiques
| PANT03
| 1996
| Hiver
10/96 - 03/97
| Eté
04/97 - 09/97
| 1997
|
| Volume (mm)
| 421.38
| 273.40
| 286.70
| 565.19
|
| Conductivité (µS/cm)
| 28.52
| 23.34
| 20.85
| 21.42
|
| pH | 4.86
| 5.13
| 4.92
| 4.93
|
| Na+ (mg/l)
| 2.35
| 3.08
| 0.65
| 0.89
|
| K+ (mg/l)
| 0.80
| 0.83
| 0.41
| 0.64
|
| Ca++ (mg/l)
| 0.89
| 1.08
| 0.64
| 0.60
|
| Mg++ (mg/l)
| 0.16
| 0.19
| 0.09
| 0.11
|
| NH4+ (mg[N]/l)
| 0.98
| 0.66
| 0.77
| 0.68
|
| Cl- (mg/l)
| 1.87
| 1.78
| 0.78
| 1.28
|
| F- (mg/l)
| 0.13
| 0.18
| 0.02
| 0.02
|
| NO3- (mg[N])/l)
| 0.64
| 0.38
| 0.60
| 0.47
|
| SO4= (mg[S]/l)
| 1.08
| 0.77
| 0.89
| 0.82
|
| PO43- (mg[P]/l)
| 0.06
| 0.05
| 0.02
| 0.01
|
Tableau 230 :
Réseau Pluies Acides - Eau moyenne - Gembloux, Faculté
des Sciences Agronomiques
| PANT03
| 1996
| Hiver
10/96 - 03/97
| Eté
04/97 - 09/97
| 1997
|
| H+ (µeq/l)
| 13.73
| 7.47
| 11.90
| 11.87
|
| Na+ (µeq/l)
| 102.08
| 134.13
| 28.23
| 38.61
|
| K+ (µeq/l)
| 20.36
| 21.21
| 10.49
| 16.36
|
| Ca++ (µeq/l)
| 44.53
| 15.84
| 7.68
| 9.00
|
| Mg++ (µeq/l)
| 13.51
| 54.02
| 32.16
| 30.03
|
| NH4+ (µeq/l)
| 69.69
| 54.67
| 63.13
| 56.20
|
| Cl- (µeq/l)
| 52.63
| 50.22
| 22.06
| 36.03
|
| F- (µeq/l)
| 7.08
| 9.54
| 1.23
| 1.01
|
| NO3- (µeq/l)
| 45.89
| 27.24
| 42.91
| 33.89
|
| SO4= (µeq/l)
| 67.24
| 48.31
| 55.27
| 51.30
|
| PO43- (µeq/l)
| 5.34
| 5.11
| 1.50
| 1.02
|
| Somme des cations
| 263.90
| 287.33
| 153.59
| 162.08
|
| Somme des anions
| 178.18
| 140.42
| 122.97
| 123.25
|
Tableau 231 :
Réseau Pluies Acides - Composition ionique - Gembloux,
Faculté des Sciences Agronomiques
PANT03
1996
|
Nombre de jours
| Nombre de jours de pluie valides
|
Moyenne
|
Médiane
|
P90
|
P95
|
P98
|
| Volume (mm)
| 366 |
124
| 3.40
| 1.54
| 7.55
| 12.86
| 19.01
|
| H+ (µeq/m².j)
| 366 |
109
| 437.53
| 79.96
| 1326.94
| 2528.43
| 2970.64
|
| Na+ (mg/m².j)
| 366 |
99
| 9.82
| 2.56
| 22.17
| 59.97
| 145.59
|
| K+ (mg/m².j)
| 366 |
99
| 3.33
| 1.14
| 3.53
| 9.69
| 41.62
|
| Ca2+ (mg/m².j)
| 366 |
99
| 3.73
| 1.92
| 8.31
| 15.23
| 30.42
|
| Mg2+(mg/m².j)
| 366 |
99
| 0.69
| 0.36
| 1.60
| 2.60
| 3.21
|
| Cl- (mg/m².j)
| 366 |
104
| 7.47
| 3.37
| 15.72
| 30.08
| 43.91
|
| F- (mg/m².j)
| 366 |
104
| 0.54
| 0.10
| 0.49
| 0.71
| 3.82
|
NH4+
(mg[N]/m².j)
| 366 |
99
| 4.08
| 3.17
| 7.73
| 12.16
| 17.45
|
NO3-
(mg[N]/m².j)
| 366 |
104
| 2.57
| 1.61
| 5.33
| 8.45
| 11.14
|
SO4=
(mg[S]/m².j)
| 366 |
104
| 4.31
| 3.39
| 10.44
| 12.07
| 13.76
|
PO43-
(mg[P]/m².j)
| 366 |
104
| 0.22
| 0.00
| 0.82
| 1.39
| 2.03
|
PANT03
1997
|
Nombre de jours
| Nombre de jours de pluie valides
|
Moyenne
|
Médiane
|
P90
|
P95
|
P98
|
| Volume (mm)
| 365 |
154
| 3.67
| 2.10
| 9.17
| 13.43
| 16.07
|
| H+ (µeq/m².j)
| 365 |
136
| 49.20
| 16.97
| 124.10
| 207.15
| 300.40
|
| Na+ (mg/m².j)
| 365 |
125
| 3.98
| 2.02
| 9.12
| 15.98
| 19.76
|
| K+ (mg/m².j)
| 365 |
125
| 2.87
| 1.05
| 3.10
| 4.11
| 12.00
|
| Ca2+ (mg/m².j)
| 365 |
125
| 2.70
| 1.75
| 6.01
| 8.33
| 12.38
|
| Mg2+(mg/m².j)
| 365 |
125
| 0.49
| 0.25
| 1.14
| 1.42
| 2.95
|
| Cl- (mg/m².j)
| 365 |
129
| 5.56
| 2.84
| 13.47
| 19.36
| 40.21
|
| F- (mg/m².j)
| 365 |
129
| 0.08
| 0.06
| 0.18
| 0.24
| 0.32
|
NH4+
(mg[N]/m².j)
| 365 |
125
| 3.06
| 2.44
| 6.94
| 8.92
| 11.52
|
NO3-
(mg[N]/m².j)
| 365 |
129
| 2.07
| 1.46
| 3.56
| 6.08
| 9.98
|
SO4=
(mg[S]/m².j)
| 365 |
129
| 3.58
| 2.90
| 7.47
| 10.39
| 12.30
|
PO43-
(mg[P]/m².j)
| 365 |
129
| 0.05
| 0.00
| 0.04
| 0.11
| 0.33
|
Tableau 232 :
Réseau Pluies Acides - Distributions de fréquences
des dépôts - Gembloux, Faculté des Sciences
Agronomiques
Haut de page
Autre réseau
Autre région
Offagne, Croix Dominique
| PANT04
| 1996
| Hiver
10/96 - 03/97
| Eté
04/97 - 09/97
| 1997
|
| Volume (mm)
| 565.60
| 403.68
| 438.41
| 919.25
|
| Conductivité (µS/cm)
| 31.05
| 24.89
| 18.45
| 23.84
|
| pH | 6.16
| 6.29
| 5.86
| 6.00
|
| Na+ (mg/l)
| 2.72
| 3.62
| 0.79
| 1.20
|
| K+ (mg/l)
| 0.64
| 0.55
| 0.46
| 0.96
|
| Ca++ (mg/l)
| 1.01
| 0.94
| 0.87
| 0.90
|
| Mg++ (mg/l)
| 0.15
| 0.19
| 0.11
| 0.16
|
| NH4+ (mg[N]/l)
| 1.21
| 1.11
| 0.96
| 1.08
|
| Cl- (mg/l)
| 1.60
| 1.70
| 0.88
| 1.65
|
| F- (mg/l)
| 0.16
| 0.21
| 0.01
| 0.01
|
| NO3- (mg[N])/l)
| 0.61
| 0.54
| 0.48
| 0.49
|
| SO4= (mg[S]/l)
| 0.76
| 0.64
| 0.58
| 0.69
|
| PO43- (mg[P]/l)
| 0.06
| 0.07
| 0.01
| 0.01
|
Tableau 233 :
Réseau Pluies Acides - Eau moyenne - Offagne, Croix Dominique
| PANT04
| 1996
| Hiver
10/96 - 03/97
| Eté
04/97 - 09/97
| 1997
|
| H+ (µeq/l)
| 0.69
| 0.51
| 1.38
| 1.00
|
| Na+ (µeq/l)
| 118.47
| 157.52
| 34.34
| 52.39
|
| K+ (µeq/l)
| 16.45
| 13.98
| 11.69
| 24.58
|
| Ca++ (µeq/l)
| 50.16
| 15.90
| 8.99
| 13.03
|
| Mg++ (µeq/l)
| 12.55
| 47.01
| 43.24
| 44.67
|
| NH4+ (µeq/l)
| 86.69
| 91.41
| 79.06
| 89.21
|
| Cl- (µeq/l)
| 45.25
| 48.00
| 24.91
| 46.60
|
| F- (µeq/l)
| 8.66
| 11.25
| 0.74
| 0.77
|
| NO3- (µeq/l)
| 43.49
| 38.31
| 34.26
| 35.21
|
| SO4= (µeq/l)
| 47.27
| 39.70
| 35.87
| 43.35
|
| PO43- (µeq/l)
| 6.04
| 6.68
| 0.99
| 0.90
|
| Somme des cations
| 285.01
| 326.32
| 178.69
| 224.88
|
| Somme des anions
| 150.71
| 143.95
| 96.77
| 126.83
|
Tableau 234 :
Réseau Pluies Acides - Composition ionique - Offagne, Croix
Dominique
PANT04
1996
|
Nombre de jours
| Nombre de jours de pluie valides
|
Moyenne
|
Médiane
|
P90
|
P95
|
P98
|
| Volume (mm)
| 337 |
140
| 4.04
| 1.89
| 11.17
| 16.00
| 23.94
|
| H+ (µeq/m².j)
| 337 |
124
| 17.09
| 6.96
| 36.55
| 78.14
| 121.02
|
| Na+ (mg/m².j)
| 337 |
105
| 14.42
| 3.50
| 18.07
| 75.92
| 130.25
|
| K+ (mg/m².j)
| 337 |
109
| 3.28
| 1.84
| 9.63
| 14.19
| 16.49
|
| Ca2+ (mg/m².j)
| 337 |
109
| 5.13
| 3.68
| 11.14
| 16.53
| 19.18
|
| Mg2+(mg/m².j)
| 337 |
108
| 0.79
| 0.47
| 1.64
| 2.34
| 2.94
|
| Cl- (mg/m².j)
| 337 |
115
| 7.80
| 3.62
| 13.22
| 20.91
| 45.26
|
| F- (mg/m².j)
| 337 |
115
| 0.80
| 0.05
| 0.40
| 1.62
| 7.09
|
NH4+
(mg[N]/m².j)
| 337 |
109
| 6.20
| 5.02
| 13.76
| 15.47
| 16.71
|
NO3-
(mg[N]/m².j)
| 337 |
117
| 2.91
| 1.91
| 5.70
| 8.33
| 12.15
|
SO4=
(mg[S]/m².j)
| 337 |
117
| 3.62
| 2.94
| 8.47
| 9.99
| 14.12
|
PO43-
(mg[P]/m².j)
| 337 |
117
| 0.30
| 0.00
| 0.69
| 3.22
| 3.82
|
PANT04
1997
|
Nombre de jours
| Nombre de jours de pluie valides
|
Moyenne
|
Médiane
|
P90
|
P95
|
P98
|
| Volume (mm)
| 362 |
171
| 5.38
| 2.55
| 14.51
| 17.83
| 22.50
|
| H+ (µeq/m².j)
| 362 |
160
| 5.76
| 1.25
| 16.51
| 25.39
| 32.07
|
| Na+ (mg/m².j)
| 362 |
152
| 7.25
| 4.10
| 17.46
| 23.37
| 28.13
|
| K+ (mg/m².j)
| 362 |
152
| 5.79
| 2.09
| 12.14
| 24.64
| 38.67
|
| Ca2+ (mg/m².j)
| 362 |
153
| 5.36
| 3.55
| 10.62
| 16.84
| 22.16
|
| Mg2+(mg/m².j)
| 362 |
153
| 0.95
| 0.61
| 2.22
| 3.07
| 3.59
|
| Cl- (mg/m².j)
| 362 |
151
| 10.02
| 5.35
| 24.86
| 32.22
| 58.67
|
| F- (mg/m².j)
| 362 |
151
| 0.09
| 0.04
| 0.24
| 0.39
| 0.45
|
NH4+
(mg[N]/m².j)
| 362 |
153
| 6.49
| 4.41
| 14.33
| 20.10
| 27.47
|
NO3-
(mg[N]/m².j)
| 362 |
150
| 3.01
| 2.13
| 6.52
| 7.60
| 12.05
|
SO4=
(mg[S]/m².j)
| 362 |
151
| 4.21
| 2.97
| 8.50
| 11.61
| 13.88
|
PO43-
(mg[P]/m².j)
| 362 |
151
| 0.06
| 0.00
| 0.17
| 0.35
| 0.59
|
Tableau 235 :
Réseau Pluies Acides - Distributions de fréquences
des dépôts - Offagne, Croix Dominique
Haut de page
Autre réseau
Autre région
Jalhay, Mont Rigi (Ulg)
| PANT05
| 1996
| Hiver
10/96 - 03/97
| Eté
04/97 - 09/97
| 1997
|
| Volume (mm)
| 673.89
| 483.07
| 636.21
| 1251.34
|
| Conductivité (µS/cm)
| 25.68
| 47.17
| 19.59
| 29.54
|
| pH | 4.87
| 4.94
| 5.17
| 5.10
|
| Na+ (mg/l)
| 1.63
| 1.64
| 1.47
| 1.39
|
| K+ (mg/l)
| 0.35
| 0.47
| 0.21
| 0.35
|
| Ca++ (mg/l)
| 0.89
| 0.62
| 0.77
| 0.71
|
| Mg++ (mg/l)
| 0.17
| 0.19
| 0.06
| 0.08
|
| NH4+ (mg[N]/l)
| 0.92
| 0.75
| 0.65
| 0.66
|
| Cl- (mg/l)
| 1.28
| 1.73
| 0.59
| 1.09
|
| F- (mg/l)
| 0.02
| 0.03
| 0.02
| 0.02
|
| NO3- (mg[N])/l)
| 0.70
| 0.51
| 0.54
| 0.50
|
| SO4= (mg[S]/l)
| 1.05
| 0.75
| 0.70
| 0.67
|
| PO43- (mg[P]/l)
| 0.03
| 0.03
| 0.01
| 0.01
|
Tableau 236 :
Réseau Pluies Acides - Eau moyenne - Jalhay, Mont Rigi
(ULg)
| PANT05
| 1996
| Hiver
10/96 - 03/97
| Eté
04/97 - 09/97
| 1997
|
| H+ (µeq/l)
| 13.37
| 11.39
| 6.82
| 7.91
|
| Na+ (µeq/l)
| 70.92
| 71.15
| 63.89
| 60.25
|
| K+ (µeq/l)
| 9.04
| 12.08
| 5.48
| 8.83
|
| Ca++ (µeq/l)
| 44.39
| 15.32
| 5.32
| 6.55
|
| Mg++ (µeq/l)
| 13.61
| 30.93
| 38.52
| 35.49
|
| NH4+ (µeq/l)
| 65.90
| 61.46
| 53.11
| 54.49
|
| Cl- (µeq/l)
| 36.06
| 48.80
| 16.78
| 30.68
|
| F- (µeq/l)
| 1.31
| 1.47
| 1.24
| 1.10
|
| NO3- (µeq/l)
| 49.63
| 36.51
| 38.63
| 35.95
|
| SO4= (µeq/l)
| 65.66
| 47.00
| 43.45
| 41.91
|
| PO43- (µeq/l)
| 2.93
| 2.60
| 1.44
| 0.82
|
| Somme des cations
| 217.22
| 202.32
| 173.14
| 173.52
|
| Somme des anions
| 155.59
| 136.39
| 101.53
| 110.47
|
Tableau 237 :
Réseau Pluies Acides - Composition ionique - Jalhay, Mont
Rigi (ULg)
PANT05
1996
|
Nombre de jours
| Nombre de jours de pluie valides
|
Moyenne
|
Médiane
|
P90
|
P95
|
P98
|
| Volume (mm)
| 319 |
127
| 5.31
| 3.30
| 13.60
| 15.68
| 22.08
|
| H+ (µeq/m².j)
| 319 |
122
| 395.05
| 79.96
| 1103.70
| 1559.02
| 2202.17
|
| Na+ (mg/m².j)
| 319 |
114
| 9.54
| 3.34
| 19.19
| 38.14
| 42.37
|
| K+ (mg/m².j)
| 319 |
115
| 2.05
| 1.41
| 4.41
| 5.44
| 7.33
|
| Ca2+ (mg/m².j)
| 319 |
115
| 5.16
| 3.33
| 11.98
| 16.06
| 20.20
|
| Mg2+(mg/m².j)
| 319 |
115
| 0.96
| 0.45
| 1.29
| 2.04
| 5.45
|
| Cl- (mg/m².j)
| 319 |
118
| 7.25
| 4.37
| 15.39
| 23.56
| 46.20
|
| F- (mg/m².j)
| 319 |
118
| 0.14
| 0.08
| 0.35
| 0.42
| 0.63
|
NH4+
(mg[N]/m².j)
| 319 |
115
| 5.36
| 3.61
| 11.89
| 17.26
| 19.75
|
NO3-
(mg[N]/m².j)
| 319 |
118
| 3.94
| 2.77
| 8.51
| 13.84
| 16.32
|
SO4=
(mg[S]/m².j)
| 319 |
118
| 5.97
| 4.04
| 13.41
| 18.88
| 23.04
|
PO43-
(mg[P]/m².j)
| 319 |
118
| 0.17
| 0.00
| 0.50
| 1.36
| 2.24
|
PANT05
1997
|
Nombre de jours
| Nombre de jours de pluie valides
|
Moyenne
|
Médiane
|
P90
|
P95
|
P98
|
| Volume (mm)
| 362 |
188
| 6.66
| 4.52
| 18.11
| 22.76
| 28.49
|
| H+ (µeq/m².j)
| 362 |
180
| 54.95
| 4.75
| 190.92
| 281.89
| 438.76
|
| Na+ (mg/m².j)
| 362 |
171
| 10.11
| 4.67
| 24.02
| 36.80
| 55.09
|
| K+ (mg/m².j)
| 362 |
170
| 2.52
| 1.09
| 4.86
| 6.01
| 9.73
|
| Ca2+ (mg/m².j)
| 362 |
171
| 5.19
| 2.67
| 10.04
| 15.64
| 22.51
|
| Mg2+(mg/m².j)
| 362 |
171
| 0.58
| 0.34
| 1.41
| 1.80
| 2.36
|
| Cl- (mg/m².j)
| 362 |
172
| 7.90
| 4.21
| 15.62
| 22.88
| 31.91
|
| F- (mg/m².j)
| 362 |
172
| 0.15
| 0.06
| 0.40
| 0.53
| 0.79
|
NH4+
(mg[N]/m².j)
| 362 |
171
| 4.83
| 3.44
| 10.01
| 12.51
| 20.13
|
NO3-
(mg[N]/m².j)
| 362 |
172
| 3.65
| 2.60
| 7.86
| 10.85
| 14.59
|
SO4=
(mg[S]/m².j)
| 362 |
172
| 4.88
| 3.52
| 10.22
| 13.09
| 20.23
|
PO43-
(mg[P]/m².j)
| 362 |
172
| 0.06
| 0.00
| 0.05
| 0.26
| 1.29
|
Tableau 238 :
Réseau Pluies Acides - Distributions de fréquences
des dépôts - Jalhay, Mont Rigi (ULg)
Haut de page
Autre réseau
Autre région