isotopes and chemical tracers in...

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