The NSS Bulletin - ISSN 1090-6924
Volume 46 Number 2: 3-9 - October 1984

A publication of the National Speleological Society

Dye Tracer Tests in Karst Areas
William K.Jones


Dye tracer techniques have evolved from simple labeling experiments used to determine the source of resurgences or the outlet for sinking streams to sophisticated tools for studying the hydraulics of karst aquifers. Karst regions are generally first studied using qualitative methods and passive detectors to monitor springs. Quantitative tests, often using several dyes simultaneously, may then be conducted to study the flow characteristics of the aquifers. The tracer dyes used most often in North America for reconnaissance type studies include fluorescein sodium, direct yellow 96, and optical brighteners. These dyes are readily collected on passive detectors and analyzed without using instruments. Rhodamine WT may be used simultaneously with the above dyes and fluorometric analysis in quantitive studies.

This page last updated: 6 November, 2002 7:40
Web Author: Jim Pisarowicz