There will be two special sessions that focus on environmental isotope
geochemistry at the Spring meeting of the American Geophysical Union (AGU);
see the session descriptions below.  The meeting takes place May 20-24,
1996, in Baltimore Maryland.  Abstracts are due February 29. 

Information about the meeting can be found on the AGU Web site:
http://www.agu.org and in the January 30, 1996 issue of EOS.  You do not
have to be a member to present a paper; you just need a member to sponsor you.

For specific information about the sessions below, contact the session
conveners.  We are hoping for a good crowd of folks interested in practical
applications of isotopes. 

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H11 Surgical Strikes: Low-cost Applications of Isotopes for Solving
Environmental Problems

  Environmental isotopes are powerful tools for solving many
hydrologic and geochemical problems.  In particular, the
integrating (in both space and time) nature of isotope signatures
can overcome one of the perpetual problems that hinders earth
science investigations:  insufficient data.  However, isotopes are
generally not a conventional tool for environmental studies.  We
solicit examples of low-cost, practical applications of small data
sets.  We especially welcome presentations showing how small sets
of isotope data have produced major changes in conceptual framework
and/or have dramatically affected the later development of
hydrologic models.  The session will include a panel discussion on
the uses of isotopes in environmental studies.
  Conveners:  Kip Solomon, University of Utah, Dept. Geology and
Geophysics, 719 Browning Bldg., Salt Lake City, UT 84112-1183,
tel.: 801-581-7231, fax: 801-581-7065, e-mail:
[log in to unmask]; and Carol Kendall, USGS, 345
Middlefield Road, MS 434, Menlo Park, CA 94025, tel.: 415-329-4576,
fax: 415-329-4538, email: [log in to unmask]


H13 Environmental Isotope Applications in Hydrologic Studies of
Agricultural Landscapes

  Agricultural landscapes host a variety of hydrologic processes
that are amenable to study with environmental isotopes.  We invite
presentations on the uses of isotopes as tracers of water and
solutes and indicators of biogeochemical processes in agricultural
settings.  Topics might include:distinguishing matrix- and
preferential-flow components of infiltration; determining residence
times of soil water; hydrograph separation in agricultural
watersheds; documenting the effects of tile drains on the hydrology
of agricultural watersheds; nitrogen cycling in agricultural
settings; and tracing dissolved constituents from fertilizers. 
Especially welcome are talks about how isotopes have been used to
evaluate agricultural best-management practices and installations
such as vegetated filter- and buffer strips.
  Convener: Steve Komor, U.S. Geological Survey, 2280 Woodale
Drive, Mounds View, MN 55112, tel.: 612-783-3236, fax:
612-783-3236, e-mail: [log in to unmask]