Concept information
Preferred term
GGBRB
Definition
- A hydrogeochemical study is performed in the hydrographic basin of the river Buquira, located in the north-eastern part of the Sao Paulo State, Brazil. This 406 sq. Km basin is carved within mainly magmatic rocks, with localized occurrences of Precambrian granites and granulites, and quaternary alluvions. This work includes systematic monitoring of the chemical composition of rain, river, spring water as well as water from wells dug in the weathering mantle of rocks. Soils are also being studied. Besides rainfall and river flow data, chemical analysis includes: pH, conductivity and sodium, calcium, potassium, magnesium, chloride, sulfate, nitrate and ammonium concentrations. (en)
Broader concept
- G - I (en)
URI
https://gcmd.earthdata.nasa.gov/kms/concept/ed7a443a-d40b-43a8-823c-9d9917acf055
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