Cave aerosols : distribution and contribution to speleothem geochemistry

Research output: Contribution to journalArticle

Authors

  • J. Dredge
  • A. Fernandez-Cortes
  • S. Sanchez-Moral
  • V. Jurado
  • A. Smith
  • C. Spötl
  • D. Mattey
  • N. Grassineau

External organisations

  • Research School of Astronomy and Astrophysics, Australian National University, Cotter Road, Weston Creek, ACT 2611, Australia; Astronomy Department, King Abdulaziz University, PO Box 80203, Jeddah, Saudi Arabia; Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
  • Dep. of Physics, Royal Holloway, University of London, Egham TW20 0EX, UK
  • Lancaster University
  • Museo Nacional Ciencias Naturales (MNCN-CSIC)
  • IRNASE-CSIC
  • Leopold-Franzens-Universität Innsbruck
  • Department of Environmental Sciences / Center of Excellence in Environmental Studies, King Abdulaziz University, PO Box 80203, Jeddah, 21589, Saudi Arabia

Abstract

There is developing interest in cave aerosols due to the increasing awareness of their impacts on the cave environment and speleothem; this paper provides the first attempt to synthesize the issues. Processes of cave aerosol introduction, transport, deposition, distribution and incorporation are explored, and reviewed from existing literature. Key issues of specific aerosol processes of distribution and production as well as cave location and morphology effects are highlighted through the presentation of preliminary monitoring data. This study identifies the strong relationship between cave ventilation, cave aerosols and their consequent spatial distribution. The contribution of cave aerosol deposition to speleothem geochemistry is modelled and evaluated using a mass balance framework. As an example, speleothem trace element data from Obir Cave (Austria) are compared with aerosol inputs to evaluate their significance. The mass balance study demonstrates that generally, under normal continuous growth and environmental conditions aerosol deposition will be of only minor importance. However, it highlights specific scenarios in which aerosol contributions will be significant: speleothem hiatuses (or slow growth), high aerosol deposition, and secondary microbiological feedback.

Details

Original languageEnglish
Pages (from-to)23-41
Number of pages19
JournalQuaternary Science Reviews
Volume63
Early online date10 Jan 2013
Publication statusPublished - 1 Mar 2013

Keywords

  • Cave aerosols, Aerosols, Dry deposition, Bioaerosols, Aerosol transport, Speleothem, Geochemistry, Trace elements, Cave ventilation, Bacteria, Fungi, Bioaccumulation