isotopes and chemical tracers in...

Isotopes and Chemical Tracers in Hydrology Isotopes and Chemical 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 the use 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 Valley groundwaters Modem groundwater Palaeowaters World meteonic line Local rainfall White Nile Blue Nile evaporation evaporation +40 +20 0 -20 -40 -60 -80 -10 -5 0 +5 +10 +15 +20 +25 δ 18 0%0 δ 2 H%0 www.G-WADI.org Isotopes and Chemical Tracers in Hydrology Isotopes and Chemical 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 the use 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 Valley groundwaters Modem groundwater Palaeowaters World meteonic line Local rainfall White Nile Blue Nile evaporation evaporation +40 +20 0 -20 -40 -60 -80 -10 -5 0 +5 +10 +15 +20 +25 δ 18 0%0 δ 2 H%0 www.G-WADI.org Isotopes and Chemical Tracers in Hydrology Isotopes and Chemical 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 the use 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 Valley groundwaters Modem groundwater Palaeowaters World meteonic line Local rainfall White Nile Blue Nile evaporation evaporation +40 +20 0 -20 -40 -60 -80 -10 -5 0 +5 +10 +15 +20 +25 δ 18 0%0 δ 2 H%0 www.G-WADI.org 30-06-08 30-06-08 30-06-08

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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