Science Keywords>TERRESTRIAL HYDROSPHERE
LBA-ECO ND-01 STREAMWATER AND WATERSHED CHARACTERISTICS, RONDONIA, BRAZIL: 1998-1999Entry ID: ND01_STREAM_CHEMISTRY
Abstract: This data set provides the results of (1) synoptic streamwater sampling and analyses from numerous sites across Rondonia and (2) corresponding watershed characteristics derived from remote sensing and historical/available data sources. Sixty streams, in both forested and non-forested sites, were sampled once during the dry season in August of 1998 and 49 of the same streams were sampled again ... during the wet season in January-February of 1999. Analyses included sodium (Na), calcium (Ca), magnesium (Mg), potassium (K), silica (Si), chloride (Cl), sulfate, pH, and acid neutralizing capacity. Watershed characteristics, including soil cation content, pH, watershed lithology, area, percent deforested, and urban watershed population density, were derived and calculated from digitized soil maps and available soil profile analyses, digitized topographic maps, land use mosaics from Landsat Thematic Mapper (TM) images, and Brazilian census data. The objective of the study was to determine the relative influence of watershed soil exchangeable cation content, rock type, deforestation, and urban population density on stream concentrations of base cations, dissolved silicon, chloride and sulfate in both the dry and wet seasons in a humid tropical region undergoing regional land use transformation. There are three comma-delimited data files with this data set.
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Data Set Citation
Dataset Originator/Creator: BIGGS, T.W.DOMINGUES, T.F.DUNNE, T.MARTINELLI, L.A.
Dataset Title: LBA-ECO ND-01 STREAMWATER AND WATERSHED CHARACTERISTICS, RONDONIA, BRAZIL: 1998-1999
Dataset Release Date: 2012
Dataset Release Place: Oak Ridge, Tennessee, U.S.A.
Dataset Publisher: Oak Ridge National Laboratory Distributed Active Archive Center
Data Presentation Form: Online Files
Dataset DOI: doi:10.3334/ORNLDAAC/1119Online Resource: http://mercury.ornl.gov/ornldaac/send/query?term2=1119&term2attribu...
Start Date: 1998-08-02Stop Date: 1999-01-28
SOLID EARTH > GEOCHEMISTRY > BIOGEOCHEMICAL PROCESSES
LAND SURFACE > SOILS > CALCIUM
TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > DISSOLVED SOLIDS
LAND SURFACE > SOILS > POTASSIUM
LAND SURFACE > EROSION/SEDIMENTATION > SEDIMENT CHEMISTRY
LAND SURFACE > EROSION/SEDIMENTATION > SEDIMENT TRANSPORT
TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > WATER ION CONCENTRATION
TERRESTRIAL HYDROSPHERE > SURFACE WATER > WATERSHED CHARACTERISTICS
ISO Topic Category
Data Set Progress
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Creation and Review Dates
DIF Creation Date: 2012-09-14
Last DIF Revision Date: 2012-09-27