IADO   05364
INSTITUTO ARGENTINO DE OCEANOGRAFIA
Unidad Ejecutora - UE
artículos
Título:
POTOS: A Portable Topographic System for Measuring Inaccessible Muddy Creek Areas
Autor/es:
MINKOFF, D.R.; PERILLO, G.M.E.; PEREZ, D; MARASCHIN, S.D.; SASSI, M.G.
Revista:
Wetland Ecology and Management
Editorial:
Springer
Referencias:
Lugar: Berlin; Año: 2007 vol. 15 p. 135 - 140
ISSN:
0923-4861
Resumen:
Tidal flats and marshes in intertidal environments and estuaries generally cover large areas. The access to these places is usually complicated. The area suffers cycles of flooding and drying under the influence of the tide, which in conjunction with soft and muddy soils makes every movement very difficult. In particular, in tidal channels mud is softer and, many times, it isimpossible to move around these areas. Furthermore, muddy tidal flat creeks are often located far away from conventional vehicle access. Then, to perform a topographic study using traditionalmethodology is not feasible; therefore, an alternative methodology has been developed to dealwith these problems. POTOS is a light metallic frame developed to measure creek topography indirectly with good precision. The tensed frame, up to 12 m long, simply supported and weighting only 40 kg allows making relative height measurements of the surface between the supporting posts. The field methodology is described and some results obtained with the instrument developed are presented. Errors were calculated by comparing measurements obtained with the instrument and those gathered by traditional methodologies. Field results are a series of measurements obtained in Bahı´a Blanca Estuary tidal flats and marshes at different periods of the year.