Readme.veg ---------- The TARRAWARRA DATA SET ----------------------- COLLECTED BY: Dr Andrew Western and Dr Rodger Grayson Centre for Environmental Applied Hydrology Department of Civil and Environmental Engineering The University of Melbourne Parkville 3052 Australia fax: +61 3 9344 6215 email: a.western@engineering.unimelb.edu.au r.grayson@engineering.unimelb.edu.au ******************* Copyright ************************** Copyright (c) 1995-1998 Centre for Environmental Applied Hydrology, The University of Melbourne. Permission to use, copy and distribute this data and its documentation, for non-commercial purposes, is hereby granted without fee, provided that the above copyright notice appear in all copies, that both that copyright notice and this permission notice appear in supporting documentation, and that any publication resulting from the use of this data cites: A W Western and R B Grayson, "The Tarrawarra data set: Soil moisture patterns, soil characteristics and hydrological flux measurements", Water Resources Research, in review. Authors are requested to forward 2 copies of any publication utilising this data set to the address above. Any problems with interpreting the data or requests for further information should be addressed to Dr Andrew Western or Dr Rodger Grayson. ****************************************************************** Acknowledgments --------------- The Tarrawarra catchment is owned by the Cistercian Monks (Tarrawarra) who have provided free access to their land and willing cooperation throughout the project. Funding for this work was provided by: the Australian Research Council (project A39531077); the Cooperative Research Centre for Catchment Hydrology; Oesterreichische Nationalbank, Vienna (project 5309); the Department of Industry, Science and Technology, International Science and Technology Program; The University of Melbourne and The Ian Potter Foundation. The European Space Agency and the National Aeronautical and Space Agency provided SAR data free of charge. Assistance in the field and with data processing has been provided by Karen Moore. Field assistance has also been provided by Jenny Barkley, Alison Dedman, Judy Dunai, Sarah Ewing, Brian Finlayson, Myriam Ghali, Tim Green, Veronique Gomendy, Tony Ladson, Lee Heng, Natasha Heron, Neela Janakiramanan, Loic Mangeot, Tom McMahon, Graham Moore, Joorst Overbeek, Michael Roberts, Kate Smolenska, Hugh Turral, Mariska te Vaarwerk, Jeff Walker, Fred Watson, Garry Willgoose, Mark Wood, and Rodger Young. Garry Willgoose, Tom McMahon, Günter Blöschl, David Goodrich, Hugh Turral, and Brian Finlayson have provided useful suggestions on the field data collection. Veronique Gomendy and Hugh Turral assisted with interpretation of the soil cores. Graham Moore has provided help with instrumentation on the DCV. Fred Watson provided advice on GIS and data management. ------------------------------------------------------------------ Surface roughness data ---------------------- Surface roughness was characterised by using a pin profiler which has a pin spacing of 25 mm and a total length of 1 m (i.e. 41 pins). Profiles were measured by setting up the profiler so that it was approximately parallel to the surface being measured and the elevation of each pin was read visually from a scale located behind the pins. The elevation of each pin was read to an accuracy of ±1 mm, and the pin location at the ground surface is accurate to ±3 mm. We measured six profiles at each site: two across the slope; two up the slope; and two at 45º to the slope. Profile measurements were made adjacent to NMM access tubes. Most of the surface roughness is due to cow hoof prints. Surface profile measurement dates and locations are summarised in the table below. One files contains all the surface roughness data. File: roughnes.dat Format: Each set of roughness data (i.e. 1 site/date combination) there is a 7 column table. Column 1 is the pin location (mm), columns 2-7 contain surface profiles in mm. Columns 2 and 3 are across slope profiles, columns 4 and 5 are upslope profiles and columns 6 and 7 are at 45 degrees to the slope. Each table has a header with the sample date and location of the neutron access tube that the measurements were taken at. Vegetation data --------------- Vegetation was sampled from 1 by 1 m plots at the same time as performing surface profile measurements. The distribution of biomass was very patchy on some occasions. On those occasions we sampled the vegetation from plots which were selected to represent high and low biomass patches, and made a visual estimate of the proportion of low and high biomass patches within the vicinity of the NMM access tube. Dry mass and water contents were determined in the laboratory and area weighted average values were calculated. The vegetation consists predominantly of perennial and annual introduced grass and clover pasture species typical of the region. Vegetation sampling dates and locations are summarised below. File: vegetat.dat Format: Vegetation data is provided in a single file with 1 table per sampling date. The table contains columns for: - sampling coordinates (x, y) in Tarrawarra coordinates - water content and biomass are given in g/m^2. A header for each table provides sample dates and column headings. ------------------------------------------------------------------ Surface roughness and vegetation sampling dates and sites ------------------------------------------------------------------ Date roughness site vegetation site ------------------------------------------------------------------ 22 February 1996 3,5,7,9,14,15,16,17,18 28 March 1996 2,5,7,9,16,17,18 7,16,18 (a) 13 April 1996 7,16,18 (a) 2-3 May 1996 2,5,7,9,16,17,18 2,5,7,9,16,17,18 (a) 20 September 1996 2,4,5,7,9,12,16,17,18 2,4,5,7,9,12,16,17,18 25 October 1996 2,4,5,7,9,12,16,17,18 2,4,5,7,9,12,16,17,18 10-11 November 1996 2,4,5,7,9,12,16,17,18 2,4,5,7,9,12,16,17,18 29 November 1996 2,4,5,7,9,12,16,17,18 2,4,5,7,9,12,16,17,18 ------------------------------------------------------------------ (a)high and low biomass patches sampled. Files ----- archive: (unix) otherdat.tar.Z; (DOS/windows) otherdat.zip; and (Macintosh) otherdat.sit. ascii: roughnes.dat vegetat.dat neutron.pos