University of Bristol Spelæological Society

Repeated dye traces of underground streams in the Mendip Hills, Somerset (UBSS Proceedings v.16(1))

Proceedings » Volume 16 » Sub-volume 1

Smart,P.L., and Stanton,W.I., 1981. Repeated dye traces of underground streams in the Mendip Hills, Somerset. UBSS Proceedings, 16(1) , pp 47-58 Download PDF.

Abstract: Three underground streams were dye traced as many as twenty-four times, at various flows between the extremes of flood and drought. This systematic study, the first of its kind to our knowledge, has shown that: 1. Travel time (the time between input of dye at the swallet and its first arrival at the resurgence) is inversely proportional to mean resurgence output over the same period. This is characteristic of simple phreatic streams, which should be distinguishable using graphic analysis from vadose and complex phreatic streams. 2. Rhodamine WT dye, the most stable of the common fluorescent dyes, is progressively lost, to a significant and unpredictable extent, in transit from swallet to resurgence. Succesful tracing therefore requires more dye at low flows than at high flows.

Search options

Browse Proceedings or Search Proceedings

Upcoming Events

2nd Feb 2019:
Rescue Training Weekend (Mendips)

16th Feb 2019:
South Wales (Re-Freshers) Weekend

1st Mar 2019:
Yorkshire Weekend

9th Mar 2019:
AGM and Annual Dinner

30th Mar 2019:

View all events

All material on this site is © The University of Bristol Spelaeological Society. Webmasters should feel free to link to any part of this site; however before any re-use of material from this site in any other published form, electronic or printed, permission must be granted by the Society. We aim to allow reasonable re-use, however, we do not have sole rights ourselves for everything here. For all enquiries please contact the editor
WAI-AA (Accessibility notes) | Copyright © | © UBSS 1919 - 2019