Environmental geophysics deals with issues ranging from local-scale fluid-rock changes to large-scale climatic changes caused by anthropogenic activities and natural processes. It is enjoying rapid growth for two reasons: (1) the present sociopolitical climate of increasing awareness of the effect of man's past activities on the environment; and (2) new technological and multidimensional modeling advances that may have brought geophysical methods close to their theoretical resolving power.

However, there are some outstanding problems: Realistic whole-site multidimensional imaging of contam-inated land, understanding fluid-rock interactions, optimal data integration, and remote prediction of flow and subsoil compositions are currently the most pressing scientific...

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