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SUMMARY:Understanding Solute Transport in Extremely Heterogeneous Porous M
 edia: Lessons Learned from 25 Years of Research at the MADE Site
DTSTART:20090518T161500
DTSTAMP:20260929T062103Z
UID:ec0314db81d5d22ebe00de92ea7759a13f3bfe00e728f058980b7c75
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Chunmiao Zheng\, Univ. Alabama\, USA (2009 Birdsall-Drei
 ss Distinguished Lecturer)\nField studies at well‐instrumented sites hav
 e played a preeminent role in our efforts to better understand and predict
  contaminant transport in geologic media. In particular\, field tracer tes
 ts at several well‐known sites\, such as those in Borden (Canada)\, Cape
  Cod (Massachusetts)\, and Columbus (Mississippi)\, have provided new insi
 ghts and extensive data sets essential to development and testing of trans
 port theories and mathematical models. This presentation focuses on the fi
 eld site at the Columbus Air Force Base in Mississippi\, more commonly kno
 wn as the Macrodispersion Experiment (MADE) site.Since the 1980s\, field d
 ata from this site have been used extensively by researchers around the wo
 rld to explore complex contaminant transport phenomena in highly heterogen
 eous aquifers. Much recent and on‐going research on contaminant transpor
 t in heterogeneous media has been motivated by findings at the MADE site. 
 In particular\, results from field investigations have suggested the exist
 ence of small‐scale preferential flow paths and relative flow barriers\,
  which together exert a dominating control on contaminant transport and re
 mediation. This presentation will provide an overview of the field campaig
 ns at the MADE site over the past 25 years and discuss how the findings fr
 om these field studies have inspired various theories and models to accomm
 odate the non‐ideal transport observed in the field. The MADE site has p
 roven to be a valuable natural observatory where continuing research effor
 ts will lead to a stronger theoretical framework and practical tools for m
 odeling solute transport and evaluating remedial measures in extremely het
 erogeneous aquifers.
LOCATION:GR B30
STATUS:CONFIRMED
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