This two-day course begins by introducing you
to the basic principles of isotope hydrology and then progresses to
methods and case studies in two fundamental areas of application:
environmental isotopes in groundwater resources and environmental
isotopes in contaminant hydrogeology.
Environmental isotopes have become an
integral part of geochemical studies in groundwater projects. New
analytical technologies now allow rapid, routine measurement of a
growing number of isotopes in a wide variety of sample types. Isotopes
provide information that complements geochemical data, giving insights
to geochemical pathways and processes in groundwater resource and
groundwater quality studies. The cointerpretation of geochemical and
environmental isotope data within the hydrogeological context provides
hydrogeologists with a powerful problem-solving tool that is no longer
restricted to research programs.
An introduction to environmental isotope
theory, using the example of oxygen-18 and deuterium partitioning
through the hydrological cycle, will be discussed. Fundamental questions
in groundwater resource work include recharge origin and resource
renewability. Approaches to answering these questions are reviewed
looking at 18O and D during precipitation, evaporation, recharge,
groundwater/surface water interaction, and mixing, using a variety of
case studies. The use of tritium is presented for constraining the
residence time of recent recharge in studies of groundwater recharge and
circulation rates. Methods for modeling radiocarbon ages of dissolved
inorganic carbon in older groundwater will be briefly reviewed.
Groundwater quality studies focus on
understanding where contaminants come from and the transformations that
they may experience in the subsurface geochemical environments. The
second part of this course focuses on a selection of isotopes in solutes
and solids, including 13C, 2H, 37Cl, 15N, and 34S, to trace the origin
of contaminants and attenuation processes active in the aquifer. The
areas of application to be covered include groundwater contamination due
to agricultural (nitrate), industrial (LNAPLs and DNAPLs), urban, and
Environmental isotope methods are supported
with a large variety of case studies that integrate isotope and
geochemical data sets within the context of the groundwater flow regime
to highlight the objectives, approach, and interpretation of the method.
The course will include lectures complemented by in-class problem
solving and manipulation of data during the two days.
In this course, you will learn how to:
Who should attend?
Hilton Garden Inn Orlando International Drive North
5877 American Way
Orlando, Florida 32819
fax 407 363.9335
Accommodations: NGWA has secured a limited block of rooms on a first come, first served basis at the group rate of $98 per night single/double occupancy. This rate applies to the NGWA room block and is valid until the October 7, 2012 cutoff date, unless our block has been filled before then. When making your reservations, be sure to mention you are attending this NGWA short course. Remember, you are responsible for securing your own reservations. For guest check-in and checkout times, please contact the hotel directly.
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800 551.7379 (614 898.7791 outside the United States)
8 a.m.-5 p.m. ET Monday through Friday
fax 614 898.7786
601 Dempsey Road
National Ground Water Association
601 Dempsey Rd.
Westerville, OH 43081
(614 898.7791 outside the US)
fax 614 898.7786