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A simple and inexpensive device to measure immersion times in wave exposed shores

Published online by Cambridge University Press:  21 November 2002

Roberto M. Venegas ,
Sergio A. Navarrete  and
Gerhard R. Finke
Roberto M. Venegas
Affiliation:
Estación Costera de Investigaciones Marinas and Center for Advanced Studies in Ecology and Biodiversity, P. Universidad Católica de Chile, Casilla 114-D, Santiago CP 6513677, Chile College of Oceanic and Atmospheric Sciences, Oregon State University, 104 Ocean Admin Building, Corvallis, Oregon 97331-5503, USA
Sergio A. Navarrete
Affiliation:
Estación Costera de Investigaciones Marinas and Center for Advanced Studies in Ecology and Biodiversity, P. Universidad Católica de Chile, Casilla 114-D, Santiago CP 6513677, Chile
Gerhard R. Finke
Affiliation:
Estación Costera de Investigaciones Marinas and Center for Advanced Studies in Ecology and Biodiversity, P. Universidad Católica de Chile, Casilla 114-D, Santiago CP 6513677, Chile
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Abstract

An inexpensive and easy to build and deploy device to measure immersion times is described. The device consists of an LCD timer mounted in a small waterproof PVC housing. Time is recorded and integrated when seawater creates a connection between two stainless steel contacts. The device was tested in the laboratory and under field conditions on a wave swept shore. Under laboratory and field conditions, the device gave precise estimates of immersion times with maximum error of less than 4%. Applicability of this device in ecological and physiological studies is discussed and compared to other methods proposed in the literature.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 82 , Issue 6 , December 2002 , pp. 1023 - 1026
Copyright
© 2002 Marine Biological Association of the United Kingdom

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