Her primary scientific interests are in Rare-earth element, Geochemistry, Groundwater, Carbonate and Aquifer. Her study on Groundwater is covered under Hydrology. Within one scientific family, Karen H. Johannesson focuses on topics pertaining to Inorganic chemistry under Carbonate, and may sometimes address concerns connected to Metal, Dissolved organic carbon, Sorption and Total organic carbon.
Her Aquifer research incorporates themes from Carbonate rock and Volcanic rock. The study incorporates disciplines such as Organic matter and Mineralogy in addition to Speciation. Karen H. Johannesson interconnects Environmental chemistry and Carbonate Ion in the investigation of issues within Mineralogy.
Her main research concerns Groundwater, Geochemistry, Aquifer, Environmental chemistry and Hydrology. Her Groundwater research includes themes of Seawater, Trace element, Spring and Surface water. Her Geochemistry research integrates issues from Sediment and Carbonate.
Many of her research projects under Aquifer are closely connected to Alkalinity with Alkalinity, tying the diverse disciplines of science together. Her work deals with themes such as Organic matter, Mineralogy and Arsenic, which intersect with Environmental chemistry. Her Submarine groundwater discharge, Groundwater discharge, Hydrology and Arsenic contamination of groundwater study in the realm of Hydrology connects with subjects such as Biogeosciences.
Karen H. Johannesson spends much of her time researching Environmental chemistry, Sediment, Geochemistry, Groundwater and Estuary. The Environmental chemistry study combines topics in areas such as Organic matter, Tungsten and Arsenic. Her work in Sediment tackles topics such as Brackish water which are related to areas like Salt marsh.
Groundwater is a subfield of Hydrology that she investigates. Borrowing concepts from Rare-earth element, she weaves in ideas under Estuary. Her Aquifer research incorporates elements of Arsenate and Arsenite.
Karen H. Johannesson mainly focuses on Groundwater, Biogeochemical cycle, Environmental chemistry, Estuary and Sediment. Her Groundwater study contributes to a more complete understanding of Hydrology. Her study focuses on the intersection of Environmental chemistry and fields such as Organic matter with connections in the field of Arsenic and Dissolved organic carbon.
Her studies in Dissolved organic carbon integrate themes in fields like Nitrate, Rhodochrosite and Mineralogy. Her work in Estuary addresses issues such as Salinity, which are connected to fields such as Oil shale, Particulates, Bank and Carbonate. Karen H. Johannesson combines subjects such as Geochemistry, Pore water pressure, Brackish water and Biogeochemistry with her study of Sediment.
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Factor analytical approaches for evaluating groundwater trace element chemistry data
I.M Farnham;K.H Johannesson;A.K Singh;V.F Hodge.
Analytica Chimica Acta (2003)
Rare earth elements (REE) and yttrium in stream waters, stream sediments, and Fe–Mn oxyhydroxides: Fractionation, speciation, and controls over REE + Y patterns in the surface environment
Matthew I. Leybourne;Karen H. Johannesson.
Geochimica et Cosmochimica Acta (2008)
RARE EARTH ELEMENTS AS GEOCHEMICAL TRACERS OF REGIONAL GROUNDWATER MIXING
Kevin H. Johannesson;Klaus J. Stetzenbach;Vernon F. Hodge.
Geochimica et Cosmochimica Acta (1997)
Speciation of rare earth elements in natural terrestrial waters: assessing the role of dissolved organic matter from the modeling approach
Jianwu Tang;Karen H. Johannesson.
Geochimica et Cosmochimica Acta (2003)
Treatment of nondetects in multivariate analysis of groundwater geochemistry data
Irene M Farnham;Ashok K Singh;Klaus J Stetzenbach;Kevin H Johannesson.
Chemometrics and Intelligent Laboratory Systems (2002)
Origin of middle rare earth element enrichments in acid waters of a Canadian high Arctic lake.
Kevin H Johannesson;Xiaoping Zhou.
Geochimica et Cosmochimica Acta (1999)
Rare earth element concentrations and speciation in organic-rich blackwaters of the Great Dismal Swamp, Virginia, USA
Karen H. Johannesson;Jianwu Tang;Jeanette M. Daniels;William J. Bounds.
Chemical Geology (2004)
Rare earth element complexation behavior in circumneutral pH groundwaters: Assessing the role of carbonate and phosphate ions
Kevin H. Johannesson;Klaus J. Stetzenbach;Vernon F. Hodge;W. Berry Lyons.
Earth and Planetary Science Letters (1996)
Geochemistry of the rare-earth elements in hypersaline and dilute acidic natural terrestrial waters: Complexation behavior and middle rare-earth element enrichments
Kevin H. Johannesson;W.Berry Lyons;Mary A. Yelken;Henri E. Gaudette.
Chemical Geology (1996)
The rare earth element geochemistry of Mono Lake water and the importance of carbonate complexing
Kevin H. Johannesson;W. Berry Lyons.
Limnology and Oceanography (1994)
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