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Articles 991 - 1020 of 1905
Full-Text Articles in Geology
Resource Notes-Academic Year 1998-99
Resource Notes-Academic Year 1998-99
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Resource News-Spring 1999
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Uncertainty In Recharge From Subsidence Craters At Frenchman Flat, Nevada Test Site: Impacts Of Initial And Boundary Conditions And Media Properties, David Matthew Ely
Uncertainty In Recharge From Subsidence Craters At Frenchman Flat, Nevada Test Site: Impacts Of Initial And Boundary Conditions And Media Properties, David Matthew Ely
UNLV Theses, Dissertations, Professional Papers, and Capstones
The Nevada Test Site has over 400 subsidence craters formed by the collapse of overlying rock following underground nuclear tests. Under natural conditions, infiltration and recharge would not be considered likely due to infrequent precipitation events and extreme evapotranspiration. Crater U5a in Frenchman Flat was chosen for study because it intercepts significantly more drainage than surrounding craters. Vadose zone modeling was conducted to test the sensitivity of water movement to boundary and initial conditions. The effects of ponding depth was negligible but depth of wetting front movement was highly dependent on the lateral extent of the ponds. The model was …
Modelling Direct Episodic Recharge In The Western Australian Wheatbelt, F Lewis, Cooperative Research Centre For Catchment Hydrology (Australia)
Modelling Direct Episodic Recharge In The Western Australian Wheatbelt, F Lewis, Cooperative Research Centre For Catchment Hydrology (Australia)
Resource management technical reports
In agricultural regions of Western Australia, salinity is spreading. This is because the area taken up by groundwater discharge is increasing as a result of increased groundwater recharge following the replacement of native vegetation systems by annual crops and pasture species. Attempts to reduce groundwater recharge are now being made as it is hoped that this will decrease the rate of land salinisation. At several sites, average recharge rates have been estimated to be from 2% to 13% of the average annu ter hydrographs from the agricultural regions indicate that at some sites recharge does not occur as small amounts …
Antelope County Test-Hole Logs: Nebraska Water Survey Test-Hole Report No. 2, Sue Olafsen Lackey, Frank A. Smith, Robert F. Diffendal Jr.
Antelope County Test-Hole Logs: Nebraska Water Survey Test-Hole Report No. 2, Sue Olafsen Lackey, Frank A. Smith, Robert F. Diffendal Jr.
Robert F. Diffendal, Jr., Publications
In 1930, the Conservation and Survey Division of the University of Nebraska and the United States Geological Survey began a program of cooperative groundwater studies in Nebraska. Since then test drilling by use of rotary drilling equipment has been an integral part of that program. This report contains logs of all the test holes drilled in the county under the program as well as those drilled by the Conservation and Survey Division with financial assistance from other government agencies.
The map in this report shows the location of all test holes drilled in the county since 1930.
Present techniques of …
Ua66/8/3 Geogram, Wku Geography & Geology
Ua66/8/3 Geogram, Wku Geography & Geology
WKU Administration Documents
Newsletter created by and about the WKU Geography & Geology highlighting activities of faculty, students and alumni.
Holt County Test-Hole Logs: Nebraska Water Survey Test-Hole Report No. 45, Sue Olafsen Lackey, Frank A. Smith, Robert F. Diffendal Jr.
Holt County Test-Hole Logs: Nebraska Water Survey Test-Hole Report No. 45, Sue Olafsen Lackey, Frank A. Smith, Robert F. Diffendal Jr.
Robert F. Diffendal, Jr., Publications
In 1930, the Conservation and Survey Division of the University of Nebraska and the United States Geological Survey began a program of cooperative groundwater studies in Nebraska. Since then test drilling by use of rotary drilling equipment has been an integral part of that program. This report contains logs of all the test holes drilled in Holt County, Nebraska, under the program as well as those drilled by the Conservation and Survey Division with financial assistance from other government agencies.
The map in this report shows the location of all test holes drilled in Holt County, Nebraska from 1944 to …
Managing Granite Outcrops. Revegetation On Farms Information Kit, David Bicknell, Department Of Conservation And Land Management (Calm), The Royal Society Of Western Australia
Managing Granite Outcrops. Revegetation On Farms Information Kit, David Bicknell, Department Of Conservation And Land Management (Calm), The Royal Society Of Western Australia
Natural resources published reports
In Western Australia, granite outcrops rise from the surrounding countryside like an extensive island chain, stretching from the high rainfall south-west to the arid interior. They are extremely rich in biodiversity, which can change dramatically from outcrop to outcrop. They may contain relics of unique plant and animal populations and are very significant for nature conservation.
Granite outcrops can also be a major source of groundwater recharge within catchments, especially where the surrounding fringe and woodland vegetation has been cleared.
What is granite?
*Granite is an igneous rock consisting of large crystals of quartz, feldspar and mica or hornblende.
* …
An Atlas Of The Sand Hills, Ann S. Bleed, Charles A. Flowerday
An Atlas Of The Sand Hills, Ann S. Bleed, Charles A. Flowerday
Conservation and Survey Division: Faculty and Staff Publications
The Sand Hills region, approximately 19,300 square miles of sand dunes stretching 265 miles across Nebraska and into South Dakota, is the largest sand-dune area in the Western Hemisphere and is one of the largest grass-stabilized dune regions in the world.
The Physical And Hydrological Characteristics Of A South Coast Sandplain Site : East Howick Site Survey, Robert Anthony Sudmeyer
The Physical And Hydrological Characteristics Of A South Coast Sandplain Site : East Howick Site Survey, Robert Anthony Sudmeyer
Resource management technical reports
This Technical Report documents the physical and hydrological characteristics of a farmland site on the Esperance Sandplain. The site was located on 'Belalie Farm East' 110 km east of the town of Esperance in the locality of Howick (AMG 488900, 6277500) The site was typical of the sandplain landsystem which covers 35% (0.72 million ha) of the Esperance Agricultural Region. The farm was cleared over a number of years beginning in the 1970's and an extensive network of windbreaks established.
Water Quality In The Central Nebraska Basins, Nebraska, 1992-95, S. A. Frenzel, R. B. Swanson, T. L. Huntzinger, J. K. Stamer, P. J. Emmons, Ronald B. Zelt
Water Quality In The Central Nebraska Basins, Nebraska, 1992-95, S. A. Frenzel, R. B. Swanson, T. L. Huntzinger, J. K. Stamer, P. J. Emmons, Ronald B. Zelt
United States Geological Survey: Publications
This report is intended to summarize major findings that emerged between 1992 and 1995 from the water-quality assessment of the Central Nebraska Basins Study Unit and to relate these findings to water-quality issues of regional and national concern. The information is primarily intended for those who are involved in waterresource management. Indeed, this report addresses many of the concerns raised by regulators, water-utility managers, industry representatives, and other scientists, engineers, public officials, and members of stakeholder groups who provided advice and input to the USGS during this NAWQA Study-Unit investigation. Yet, the information contained here may also interest those who …
Hydrogeology In The Vicinity Of The Nebraska Management Systems Evaluation Area Site, Centra! Nebraska, Virginia L. Mcguire, John M. Kilpatrick
Hydrogeology In The Vicinity Of The Nebraska Management Systems Evaluation Area Site, Centra! Nebraska, Virginia L. Mcguire, John M. Kilpatrick
United States Geological Survey: Publications
From 1991 to 1992, the U.S. Geological Survey participated with the U.S. Department of Agriculture and the University of Nebraska-Lincoln in research activities at the Nebraska Management Systems Evaluation Area (MSEA) site near Shelton, Nebraska. The purpose of the U.S. Geological Survey study was to define the hydrogeologic system in the vicinity of the Nebraska MSEA site to aid the interpretation of ground-water sampling results by other researchers. The primary aquifer in the study area is the High Plains aquifer, which consists of an unconfined part, the shallow aquifer; a silt and clay unit that acts as a confining layer; …
Resource Notes-Academic Year 1997-98
Resource Notes-Academic Year 1997-98
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Spatial And Temporal Variability In Seepage Between A Contaminated Aquifer And Tributaries To The Ohio River, Alan E. Fryar, David L. Brown, David B. Wenner, Todd C. Rasmussen, Eric J. Wallin
Spatial And Temporal Variability In Seepage Between A Contaminated Aquifer And Tributaries To The Ohio River, Alan E. Fryar, David L. Brown, David B. Wenner, Todd C. Rasmussen, Eric J. Wallin
KWRRI Research Reports
Because interactions between ground water and tributaries may influence contaminant loading to rivers, we delineated seepage along Little Bayou and Bayou Creeks in McCracken County, Kentucky, during a two-year period. From the Paducah Gaseous Diffusion Plant, on the divide between the creeks, trichloroethene and technetium-99 plumes extend several km toward the Ohio River. Gaining conditions occur where the creeks are incised into coarse sediments in the river's flood plain. Such conditions were marked by upward hydraulic gradients within the bed; maximum specific discharge (q) > 0.24 m d-1; relatively narrow ranges of stream, piezometer, and bed temperatures; relatively cool …
Impact Of Topographic And Data Resolution On Hydrologic And Nonpoint-Source Pollution Modeling In A Karst Terrane, Alex W. Fogle
Impact Of Topographic And Data Resolution On Hydrologic And Nonpoint-Source Pollution Modeling In A Karst Terrane, Alex W. Fogle
Report of Investigations--KGS
To prevent or reduce the contamination of ground water from agricultural sources, Best Management Practices (BMP’s) such as land-use changes, modifications to control surface runoff, various tillage methods, variations in rates and kinds of chemical applications, and handling procedures for chemicals are being employed and analyzed for effectiveness. The effectiveness of a BMP is often estimated before implementation by evaluating the BMP through the use of computer simulation models. The interactions between surface water and ground water that are unique to karst terranes are not incorporated into the frequently used predictive models. The purpose of this study was to document …
South Central Nebraska Geology Field Trip Conservation And Survey Division-Ianr-Unl & Nebraska Well Drillers Association, Conservation Survey Division
South Central Nebraska Geology Field Trip Conservation And Survey Division-Ianr-Unl & Nebraska Well Drillers Association, Conservation Survey Division
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Estimation Of Suspended Sediment Concentration In Water Using Integrated Surface Reflectance, Mahtab A. Lodhi, Donald C. Rundquist, Luoheng Han, Mark S. Kuzila
Estimation Of Suspended Sediment Concentration In Water Using Integrated Surface Reflectance, Mahtab A. Lodhi, Donald C. Rundquist, Luoheng Han, Mark S. Kuzila
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Nebraska Oil And Gas Production And Value For 1996 And 1997, R. R. Burchett, W. H. Sydow
Nebraska Oil And Gas Production And Value For 1996 And 1997, R. R. Burchett, W. H. Sydow
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Oil And Gas Facts For Nebraska, R. R. Burchett
Oil And Gas Facts For Nebraska, R. R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Dodge County Test Hole Logs, Frank A. Smith, Raymond R. Burchett
Dodge County Test Hole Logs, Frank A. Smith, Raymond R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Harlan County Test Hole Logs, Raymond R. Burchett
Harlan County Test Hole Logs, Raymond R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Twin Platte Natural Resources District Groundwater Quality Study, D. C. Gosselin, L. Howard, J. Goeke
Twin Platte Natural Resources District Groundwater Quality Study, D. C. Gosselin, L. Howard, J. Goeke
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Quartzite Fabric Transition In A Cordilleran Metamorphic Core Complex, Allen J. Mcgrew, Martin Casey
Quartzite Fabric Transition In A Cordilleran Metamorphic Core Complex, Allen J. Mcgrew, Martin Casey
Department of Earth, Environment and Sustainability Faculty Publications
Photomicrographs 143A-143F record fabric variations in quartzite with increasing structural depth in a > 1 km thick, amphibolite-facies, normal-sense shear zone in the East Humboldt metamorphic core complex, Nevada (Figure 143.1). This shear zone and the overlying detachment system unroofed an infrastructure of high-grade, migmatitic gneiss during Oligocene to early Miocene extension (Dallmeyer and others, 1986; Wright and Snoke, 1993; McGrew and Snee, 1994). Thermobarometric constraints from near the base of the mylonitic zone record deformation conditions of 550°- 620°C and 300-400 MPa (Hurlow and others, 1991). Sample WBC6 (l43A and 143B) characterizes the mylonitic zone, whereas sample 8706-1 (143C and …
Factors Contributing To Landslide Activity In The Winter Of 1995-96, Clearwater County Near Orofino, Idaho, Aaron Paul Wisher
Factors Contributing To Landslide Activity In The Winter Of 1995-96, Clearwater County Near Orofino, Idaho, Aaron Paul Wisher
All Master's Theses
Significant landslide activity occurred in Clearwater County, Idaho in November 1995 and February-May 1996. Mass wasting in the study area consisted of debris slides and earthflows triggered by rain-on-snow weather events. It is important to determine what factors contribute to landsliding in this area so that reliable prediction can reduce the destruction of property. Through field observation and aerial photo analysis, the factors contributing to landslides were studied. The objectives included a study of the geology, soils, aspect, slope gradient, vegetation and slope position related to each slide. Also a goal was to assess the role of land use in …
Colfax County Test Hole Logs, Frank A. Smith, Raymond R. Burchett
Colfax County Test Hole Logs, Frank A. Smith, Raymond R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Madison County Test Hole Logs, Raymond R. Burchett
Madison County Test Hole Logs, Raymond R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Washington County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Washington County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Platte County Test Hole Logs, Raymond R. Burchett, Scott E. Summerside
Platte County Test Hole Logs, Raymond R. Burchett, Scott E. Summerside
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Resource News-Winter 1997-98
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Resource News-Spring 1998
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.