Isotopes and Chemical Tracers in Hydrology
Isotopes andChemical tracers provide powerful, inexpensive tools for hydrologists and water managers seeking to answer questions such as:
What is the source of this water? What is the age of this groundwater? What are the sources of solutes, including
contaminants, in this water?
The G-WADI network is facilitating theuse of both conventional chemical tools and state-of-the-art isotopic tracers in arid and semi-arid regions to further local applications in water management, without need for specialist laborato-ries. To this end, G-WADI seeks to define and provide key information on using tracers and isotopes that is required by a wide range of users.
www.G-WADI.org/tracers provides access to several resources, including: how to address various hydrologic questions; uses of various isotopes and tracers; explanations of analytic methods; interactive periodic table; and case studies.
Unsaturated zone water(from modern)
Unsaturated zone(from Palaeowater)
Nile and Nile Valleygroundwaters
Modem groundwater
Palaeowaters
Wor
ld m
eteo
nic
line
Loca
l rain
fall
White Nile
Blue Nile
evaporation
evaporation
+40
+20
0
-20
-40
-60
-80-10 -5 0 +5 +10 +15 +20 +25
δ180%0
δ2H
%0
www.G-WADI.org
Isotopes and Chemical Tracers in Hydrology
Isotopes andChemical tracers provide powerful, inexpensive tools for hydrologists and water managers seeking to answer questions such as:
What is the source of this water? What is the age of this groundwater? What are the sources of solutes, including
contaminants, in this water?
The G-WADI network is facilitating theuse of both conventional chemical tools and state-of-the-art isotopic tracers in arid and semi-arid regions to further local applications in water management, without need for specialist laborato-ries. To this end, G-WADI seeks to define and provide key information on using tracers and isotopes that is required by a wide range of users.
www.G-WADI.org/tracers provides access to several resources, including: how to address various hydrologic questions; uses of various isotopes and tracers; explanations of analytic methods; interactive periodic table; and case studies.
Unsaturated zone water(from modern)
Unsaturated zone(from Palaeowater)
Nile and Nile Valleygroundwaters
Modem groundwater
Palaeowaters
Wor
ld m
eteo
nic
line
Loca
l rain
fall
White Nile
Blue Nile
evaporation
evaporation
+40
+20
0
-20
-40
-60
-80-10 -5 0 +5 +10 +15 +20 +25
δ180%0
δ2H
%0
www.G-WADI.org
Isotopes and Chemical Tracers in Hydrology
Isotopes andChemical tracers provide powerful, inexpensive tools for hydrologists and water managers seeking to answer questions such as:
What is the source of this water? What is the age of this groundwater? What are the sources of solutes, including
contaminants, in this water?
The G-WADI network is facilitating theuse of both conventional chemical tools and state-of-the-art isotopic tracers in arid and semi-arid regions to further local applications in water management, without need for specialist laborato-ries. To this end, G-WADI seeks to define and provide key information on using tracers and isotopes that is required by a wide range of users.
www.G-WADI.org/tracers provides access to several resources, including: how to address various hydrologic questions; uses of various isotopes and tracers; explanations of analytic methods; interactive periodic table; and case studies.
Unsaturated zone water(from modern)
Unsaturated zone(from Palaeowater)
Nile and Nile Valleygroundwaters
Modem groundwater
Palaeowaters
Wor
ld m
eteo
nic
line
Loca
l rain
fall
White Nile
Blue Nile
evaporation
evaporation
+40
+20
0
-20
-40
-60
-80-10 -5 0 +5 +10 +15 +20 +25
δ180%0
δ2H
%0
www.G-WADI.org30-06-08 30-06-08 30-06-08