Dear List-Members,

First of all, I would like to introduce myself. I am a Brazilian Civil
Engineer, graduated at the Minas Gerais Federal University - UFMG
(1975), M.Sc. on Water Resources and Environmental by UFMG (1994), and I
have being worked on Experimental Hydrology, since 1993, at the Nuclear
Technology Developing Center - CDTN, that is a research center of the
Brazilian Government, in the Minas Gerais State.

Nowadays, we are carrying out hydrological studies, using tracer
techniques, in a experimental basin (Bacia Representativa de Juatuba)
that represents the central region of Minas Gerais State basins, from
the hydrological point of view. The total area of the basin is 108 km2
but, inside this area, there are several instrumented subcatchments of
different scale where the studies are being carried out.

In one of our research projects, focusing flooding studies (initiated in
1997), we are using the tracer techniques to measure some hydrological
parameters such as the Time of Concentration (using fluorescent tracer)
and the Infiltration Rate (using artificial tritium). Recently we have
decided to investigate the possibilities of using natural tracers (18O,
2H, 3H, -Cl and specific electrical conductance) to separate flow
hydrographs.

Looking for information about the “state of art” of this issue in the
Internet, I have found the ISOGEOCHEM discussion list and then I decided
to get in. So, I would be very thankful if some of you could send me any
information (or even a bibliographic index) on runoff generation and
hydrograph separation. Any reply is welcome. Thanks in advance.

With best regards,


Marcos Machado Drumond
CDTN/CNEN – Cidade Universitária – Pampulha
Caixa Postal  941 – 30123-970 – Belo Horizonte – MG – Brasil
Tel.: 55 31 3499 3131  –  Fax: 55 31 3499 3127  –  Email:
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