Stephen B Gingerich
Stephen Gingerich is a research hydrologist at the USGS Oregon Water Science Center.
Stephen Gingerich has been a Research Hydrologist for the U.S. Geological Survey since 1995. He has authored over 35 scientific papers on subjects such as groundwater modeling and island hydrology. He was a Fulbright Scholar working in Japan during 2008-09. He started working for the USGS in 1990 as a student. He has worked on hydrologic studies in Oregon, Hawaii, Guam, Japan, the Marshall Islands, American Samoa, the Northern Mariana Islands, and Diego Garcia.
Education and Certifications
BS in Geosciences from the Pennsylvania State University, 1986
MS in Hydrology from the University of Hawaii at Manoa, 1992
PhD in Hydrology from the University of Hawaii at Manoa, 1995
Science and Products
Filter Total Items: 60
Ground-water resources of the coastal plain of Aunuu Island, American Samoa, 1996-97 Ground-water resources of the coastal plain of Aunuu Island, American Samoa, 1996-97
No abstract available.
Authors
S. B. Gingerich, S. K. Izuka, T.K. Presley
Ground Water in the Southern Lihue Basin, Kauai, Hawaii Ground Water in the Southern Lihue Basin, Kauai, Hawaii
A multi-phased study of ground-water resources, including well drilling, aquifer tests, analysis of ground-water discharge, and numerical ground-water modeling, indicates that the rocks of the southern Lihue Basin, Kauai, have permeabilities that are much lower than in most other areas of ground-water development in the Hawaiian islands. The regional hydraulic conductivity of the Koloa...
Authors
Scot K. Izuka, Stephen B. Gingerich
Estimation of the depth to the fresh-water/salt-water interface from vertical head gradients in wells in coastal and island aquifers Estimation of the depth to the fresh-water/salt-water interface from vertical head gradients in wells in coastal and island aquifers
An accurate estimate of the depth to the theoretical interface between fresh, water and salt water is critical to estimates of well yields in coastal and island aquifers. The Ghyben–Herzberg relation, which is commonly used to estimate interface depth, can greatly underestimate or overestimate the fresh-water thickness, because it assumes no vertical head gradients and no vertical flow
Authors
S. K. Izuka, S. B. Gingerich
Numerical modelling of vertically extensive groundwater bodies in Maui, Hawaii: An alternative to perched aquifers Numerical modelling of vertically extensive groundwater bodies in Maui, Hawaii: An alternative to perched aquifers
Groundwater in East Maui, Hawaii is traditionally described as a series of discrete aquifers perched on low-permeability units underlain by a basal lens with heads of about 2-3 m. An alternative concept, a fully saturated aquifer to as much as 1400 m elevation, was investigated using a numerical model with various horizontal hydraulic conductivity values and anisotropy ratios. Results...
Authors
S. B. Gingerich
Construction, geologic log, and aquifer tests of the Hanamaulu monitor well (State well 2-5923-08), Lihue, Kauai, Hawaii Construction, geologic log, and aquifer tests of the Hanamaulu monitor well (State well 2-5923-08), Lihue, Kauai, Hawaii
No abstract available.
Authors
S. K. Izuka, S. B. Gingerich
Construction, geologic log, and aquifer tests of the Pukaki Reservoir monitor well (State well 2-0023-01), Lihue, Kauai, Hawaii Construction, geologic log, and aquifer tests of the Pukaki Reservoir monitor well (State well 2-0023-01), Lihue, Kauai, Hawaii
No abstract available.
Authors
S. K. Izuka, S. B. Gingerich
Science and Products
Filter Total Items: 60
Ground-water resources of the coastal plain of Aunuu Island, American Samoa, 1996-97 Ground-water resources of the coastal plain of Aunuu Island, American Samoa, 1996-97
No abstract available.
Authors
S. B. Gingerich, S. K. Izuka, T.K. Presley
Ground Water in the Southern Lihue Basin, Kauai, Hawaii Ground Water in the Southern Lihue Basin, Kauai, Hawaii
A multi-phased study of ground-water resources, including well drilling, aquifer tests, analysis of ground-water discharge, and numerical ground-water modeling, indicates that the rocks of the southern Lihue Basin, Kauai, have permeabilities that are much lower than in most other areas of ground-water development in the Hawaiian islands. The regional hydraulic conductivity of the Koloa...
Authors
Scot K. Izuka, Stephen B. Gingerich
Estimation of the depth to the fresh-water/salt-water interface from vertical head gradients in wells in coastal and island aquifers Estimation of the depth to the fresh-water/salt-water interface from vertical head gradients in wells in coastal and island aquifers
An accurate estimate of the depth to the theoretical interface between fresh, water and salt water is critical to estimates of well yields in coastal and island aquifers. The Ghyben–Herzberg relation, which is commonly used to estimate interface depth, can greatly underestimate or overestimate the fresh-water thickness, because it assumes no vertical head gradients and no vertical flow
Authors
S. K. Izuka, S. B. Gingerich
Numerical modelling of vertically extensive groundwater bodies in Maui, Hawaii: An alternative to perched aquifers Numerical modelling of vertically extensive groundwater bodies in Maui, Hawaii: An alternative to perched aquifers
Groundwater in East Maui, Hawaii is traditionally described as a series of discrete aquifers perched on low-permeability units underlain by a basal lens with heads of about 2-3 m. An alternative concept, a fully saturated aquifer to as much as 1400 m elevation, was investigated using a numerical model with various horizontal hydraulic conductivity values and anisotropy ratios. Results...
Authors
S. B. Gingerich
Construction, geologic log, and aquifer tests of the Hanamaulu monitor well (State well 2-5923-08), Lihue, Kauai, Hawaii Construction, geologic log, and aquifer tests of the Hanamaulu monitor well (State well 2-5923-08), Lihue, Kauai, Hawaii
No abstract available.
Authors
S. K. Izuka, S. B. Gingerich
Construction, geologic log, and aquifer tests of the Pukaki Reservoir monitor well (State well 2-0023-01), Lihue, Kauai, Hawaii Construction, geologic log, and aquifer tests of the Pukaki Reservoir monitor well (State well 2-0023-01), Lihue, Kauai, Hawaii
No abstract available.
Authors
S. K. Izuka, S. B. Gingerich