Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Katherine Marie Ransom"'
Autor:
Katherine Marie Ransom, Melinda L. Erickson, Charles A. Cravotta, Craig J. Brown, James E. Reddy, Sarah M. Elliott, Paul E. Stackelberg
Publikováno v:
Environmental Science & Technology. 55:5791-5805
Globally, over 200 million people are chronically exposed to arsenic (As) and/or manganese (Mn) from drinking water. We used machine-learning (ML) boosted regression tree (BRT) models to predict high As (>10 μg/L) and Mn (>300 μg/L) in groundwater
Publikováno v:
JAWRA Journal of the American Water Resources Association. 56:1010-1029
Publikováno v:
Journal of Hydrology: Regional Studies, Vol 37, Iss, Pp 100925-(2021)
Study region: The study was conducted in the Northern Atlantic Coastal Plain aquifer system, eastern USA, an important water supply in a densely populated region. Study focus: Manganese (Mn), an emerging health concern and common nuisance contaminant
Autor:
Paul E. Stackelberg, Sarah M. Elliott, Melinda L. Erickson, Craig J. Brown, James E. Reddy, Katherine Marie Ransom
Publikováno v:
Water Resources Research. 57
Autor:
Sarah M. Elliott, Kenneth Belitz, Craig J. Brown, James E. Reddy, Katherine Marie Ransom, Paul E. Stackelberg, Melinda L. Erickson, Leon J. Kauffman
Publikováno v:
Ground Water
A boosted regression tree model was developed to predict pH conditions in three dimensions throughout the glacial aquifer system of the contiguous United States using pH measurements in samples from 18,386 wells and predictor variables that represent
Publikováno v:
Journal of Hydrology: Regional Studies, Vol 30, Iss, Pp 100697-(2020)
Study region The study was conducted in the Northern Atlantic Coastal Plain aquifer system, in the eastern USA. Study focus Groundwater pH and redox conditions are fundamental chemical characteristics controlling the distribution of many contaminants
Autor:
Craig J. Brown, Katherine Marie Ransom, Melinda L. Erickson, Sarah M. Elliott, James E. Reddy, Paul E. Stackelberg
Publikováno v:
Geological Society of America Abstracts with Programs.
Autor:
Katherine Marie Ransom, Paul E. Stackelberg, Peter B. McMahon, Kenneth Belitz, Celia Z. Rosecrans
Publikováno v:
Science of The Total Environment. 806:150960
A random forest regression (RFR) model was applied to over 12,000 wells with measured fluoride (F) concentrations in untreated groundwater to predict F concentrations at depths used for domestic and public supply in basin-fill aquifers of the western
Autor:
Kenneth Belitz, Katherine Marie Ransom, Paul E. Stackelberg, Miranda S. Fram, Bernard T. Nolan
Publikováno v:
Science of The Total Environment. 807:151065
Groundwater is an important source of drinking water supplies in the conterminous United State (CONUS), and presence of high nitrate concentrations may limit usability of groundwater in some areas because of the potential negative health effects. Pre