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Articles 241 - 270 of 358
Full-Text Articles in Earth Sciences
Ravensthorpe Area Catchment Appraisal 2006, A Massenbauer
Ravensthorpe Area Catchment Appraisal 2006, A Massenbauer
Resource management technical reports
The Ravensthorpe area covers 861, 000 hectares. Ninety percent of the study area covered in this report falls within the Ravensthorpe Shire, Western Australia. This document aims to give the reader a starting point from which to further assess larger scale areas of the catchment for the purpose of planning to reverse and improve land degradation and sustainable farming in Western Australia.
Seasonal And Spatial Patterns Of Metals At A Restored Copper Mine Site. I. Stream Copper And Zinc, Dustin G. Bambic, Charles N. Alpers, Peter G. Green, Eileen Fanelli, Wendy K. Silk
Seasonal And Spatial Patterns Of Metals At A Restored Copper Mine Site. I. Stream Copper And Zinc, Dustin G. Bambic, Charles N. Alpers, Peter G. Green, Eileen Fanelli, Wendy K. Silk
United States Geological Survey: Staff Publications
Seasonal and spatial variations in metal concentrations and pH were found in a stream at a restored copper mine site located near a massive sulfide deposit in the Foothill copper-zinc belt of the Sierra Nevada, California. At the mouth of the stream, copper concentrations increased and pH decreased with increased streamflow after the onset of winter rain and, unexpectedly, reached extreme values 1 or 2 months after peaks in the seasonal hydrographs. In contrast, aqueous zinc and sulfate concentrations were highest during low-flow periods. Spatial variation was assessed in 400 m of reach encompassing an acidic, metal-laden seep. At this …
Relationship Between Fault Zone Architecture And Groundwater Compartmentalization In The East Tintic Mining District, Utah, Sandra Myrtle Conrad Hamaker
Relationship Between Fault Zone Architecture And Groundwater Compartmentalization In The East Tintic Mining District, Utah, Sandra Myrtle Conrad Hamaker
Theses and Dissertations
The Eureka Lilly fault zone provides an impermeable barrier for groundwater flow in the East Tintic mining district. The fault zone separates two distinct groundwaters that have different temperatures, compositions, and potentiometric surfaces. The damage zone of the fault is an extensive network of interconnected open fractures and fault intersections that provide conduits for groundwater flow in otherwise impermeable units. The fault core breccia has been re-cemented and mineralized, which eliminates porosity in the rock by creating a thick impermeable zone, which has compartmentalized groundwaters across the fault zone. The compartmentalization of groundwater shows that fault zone variability (from strain …
Slides: Response Of The System To Various Hydrological And Operational Assumptions: Reclamation Modeling Results, Terry Fulp
Hard Times on the Colorado River: Drought, Growth and the Future of the Compact (Summer Conference, June 8-10)
Presenter: Terry Fulp, US Bureau of Reclamation.
43 slides.
Slides: Drought, Climate Change And Water Supply Vulnerability, Brad Udall
Slides: Drought, Climate Change And Water Supply Vulnerability, Brad Udall
Hard Times on the Colorado River: Drought, Growth and the Future of the Compact (Summer Conference, June 8-10)
Presenter: Brad Udall, Western Water Assessment.
66 slides.
Hydrogeophysical Investigation At Luxor, Southern Egypt, Ahmed Ismail, Neil Lennart Anderson, J. David Rogers
Hydrogeophysical Investigation At Luxor, Southern Egypt, Ahmed Ismail, Neil Lennart Anderson, J. David Rogers
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Over the past 35 years, the exposed stone foundations of the ancient Egyptian monuments at Luxor have deteriorated at an alarmingly accelerated rate. Accelerated deterioration is attributable to three principal factors: 1) excavation and exposure of foundation stone; 2) construction of the Aswan High Dam; and 3) changes in the regional groundwater regime. In an effort to better elucidate the hydrostratigraphy in the Luxor study area that extends from the River Nile to the boundaries of the Nile Valley and covers about 70 km2, a geophysical/hydrological investigation was conducted. Forty Schlumberger vertical electrical soundings (VES), two approximately 6 …
Pingrup Townsite : Drilling Completion Report, Louise Hopgood, Department Of Agriculture, Western Australia. Rural Towns Program
Pingrup Townsite : Drilling Completion Report, Louise Hopgood, Department Of Agriculture, Western Australia. Rural Towns Program
Resource management technical reports
Initial drilling was carried out in the townsite of Pingrup in Western Australia in April 2002. This report shows the findings of the study in terms of soil characteristics, watertable management and groundwater monitoring.
Groundwater Study Of The Boddington Townsite, Gregory Paul Raper
Groundwater Study Of The Boddington Townsite, Gregory Paul Raper
Resource management technical reports
A study of the groundwater beneath the Boddington townsite was carried out in April 2002. The aim was to assess the salinity risk to the townsite infrastructure and to accelerate the implementation of effective salinity management for the town. The study consisted of field reconnaissance, a drilling program, expansion of a groundwater-monitoring network installed in March 2001, and groundwater monitoring.
Greenough Region Catchment Appraisal, Angela Stuart-Street, M Clarke
Greenough Region Catchment Appraisal, Angela Stuart-Street, M Clarke
Resource management technical reports
This report discusses a range of options for the Greenough region, which is comprised of eight shires including the Shires of Northampton, Chapman Valley, Mullewa, Greenough, Morawa, Irwin, Mingenew and Three Springs, and also the city of Geraldton. A range of options for reducing land degradation is discussed. Factors such as soil type, annual rainfall, enterprise mix and financial structure are also considered.
Silcrete Hardpan In The North-Eastern Wheatbelt : Hydrological Implications For Oil Mallees, D L. Bennett, Russell Speed, Adrian Goodreid, Peter Taylor
Silcrete Hardpan In The North-Eastern Wheatbelt : Hydrological Implications For Oil Mallees, D L. Bennett, Russell Speed, Adrian Goodreid, Peter Taylor
Resource management technical reports
Silcrete is a brittle, intensely indurated rock comprising primarily quartz grains cemented with siliceous allophane. It occurs at 1.5 to 7 metres deep and is often several metres thick and extremely hard, requiring excavation. This Report discusses the extent of silcrete layers in the north-eastern wheatbelt area of Western Australia, the effects of silcrete on water absorption by the soil, and the effects of this physical obstacle on the growth and expansion of oil mallee trees of the region.
The Role Of Geomorphic Features And Hydrologic Processes On Sediment Clusters In Gravel-Bed Rivers, Washington: A Field-Based Approach, Ross Richard Hendrick
The Role Of Geomorphic Features And Hydrologic Processes On Sediment Clusters In Gravel-Bed Rivers, Washington: A Field-Based Approach, Ross Richard Hendrick
All Master's Theses
This project investigated the movement and evolution of sediment clusters after four separate flood events at two geomorphically different sites along the Entiat River, Washington. Clusters are defined as an obstacle or anchor clast(s) that impede the progress of two or more sediment particles, and are believed to be an important characteristic of the variable bed topography of gravel-bed rivers. Detailed field descriptions and digital photographs of clusters were used to determine the characteristics of clusters at chosen locations on gravel bars regularly covered by high flow events. Data were collected during low-flow conditions, and clusters were re- examined and …
Agenda: Introduction To The Legal Foundation Of Federal Land Management, University Of Colorado Boulder. Natural Resources Law Center
Agenda: Introduction To The Legal Foundation Of Federal Land Management, University Of Colorado Boulder. Natural Resources Law Center
Introduction to the Legal Foundation of Federal Land Management (December 1-3)
Materials prepared for the course held at the National Center for Atmospheric Research in Boulder, Colorado on December 1-3, 2004
Course instructors: Charles Wilkinson; Sarah Krakoff; Kathryn Mutz; Ann Morgan; Maggie Fox
Contents:
Introduction -- Agenda -- Summaries of laws -- Case studies. Travel management; Oil and gas development; Timber/fuels reduction -- How to influence agency decision makers -- Natural resource related legal and policy resources for the non-legal professional
Introduction To The Legal Foundation Of Federal Land Management, University Of Colorado Boulder. Natural Resources Law Center
Introduction To The Legal Foundation Of Federal Land Management, University Of Colorado Boulder. Natural Resources Law Center
Introduction to the Legal Foundation of Federal Land Management (December 1-3)
1 v. (various pagings) : ill., maps ; 28 cm
Materials prepared for the course held at the National Center for Atmospheric Research in Boulder, Colorado on December 1-3, 2004
Course instructors: Charles Wilkinson; Sarah Krakoff; Kathryn Mutz; Ann Morgan; Maggie Fox
Contents:
Introduction -- Agenda -- Summaries of laws -- Case studies. Travel management; Oil and gas development; Timber/fuels reduction -- How to influence agency decision makers -- Natural resource related legal and policy resources for the non-legal professional
Hydrologic Variations Within Created And Natural Wetlands In Southeastern Virginia, Aaron Dyer Despres
Hydrologic Variations Within Created And Natural Wetlands In Southeastern Virginia, Aaron Dyer Despres
OES Theses and Dissertations
The hydrology of wetlands, particularly how wetland soils collect, store, and redistribute water strongly affects how wetland systems function. In created wetlands, construction processes and materials influence the hydrology and consequently, the potential for successful reestablishment of target vegetation communities. During .2002- 2004, the Virginia Department of Transportation constructed large mitigation wetlands on two different Quaternary aged surfaces with very similar hydrogeomorphic conditions. The Sandy Bottom Nature Park site (SBNP) located in Hampton, VA and rests on the sandy loam Tabb Formation while the Charles City Wetland site (CCW) lies on the older and clay-rich Shirley Formation. This study documents …
Groundwater Management: Lessons From Colorado V. Kansas, David W. Robbins
Groundwater Management: Lessons From Colorado V. Kansas, David W. Robbins
Groundwater in the West (Summer Conference, June 16-18)
11 pages.
Groundwater Trends In The North Stirling Pallinup Sub-Region, Ruhi Ferdowsian, Lisa Crossing
Groundwater Trends In The North Stirling Pallinup Sub-Region, Ruhi Ferdowsian, Lisa Crossing
Natural resources published reports
The South Coast Regional Initiative Planning Team (SCRIPT) has divided the South Coast region of Western Australia into six sub-regions. This publication describes the groundwater trends, risk of shallow watertables, and technical feasibility of salinity management in the agricultural district of the North Stirling Pallinup sub-region.
This sub-region encompasses the Stirling Range National Park, the North Stirling Basin to the north-east of the Park, and the middle and upper catchments of the Pallinup River. Almost 90% (500,000 ha) of the sub-region's alienated land has been cleared for agriculture, and salinity has been identified as an important issue.
Soil-landscape zones are …
Effects Of Microbial Processes On Electrolytic And Interfacial Electrical Properties Of Unconsolidated Sediments, Gamal Z. Abdal Aal, Estella A. Atekwana, Lee D. Slater, Eliot A. Atekwana
Effects Of Microbial Processes On Electrolytic And Interfacial Electrical Properties Of Unconsolidated Sediments, Gamal Z. Abdal Aal, Estella A. Atekwana, Lee D. Slater, Eliot A. Atekwana
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
The effect of microbial processes on electrical properties of unconsolidated sediments was investigated in a laboratory experiment consisting of biotic and abiotic sand columns. The biotic column (nutrient, diesel and bacteria) showed (a) temporal increase in the real, imaginary, and surface conductivity, and (b) temporal decrease in the formation factor. The abiotic columns (nutrient; and nutrient and diesel) showed no significant changes. Increase in microbial population numbers, decrease in organic carbon source, nitrate, and sulfate and increase in dissolved inorganic carbon and fluid conductivity were indicative of microbial activity in the biotic column. We also measure relative increase in the …
Groundwater Study Of The Narrogin Townsite, Edward K. Crossley
Groundwater Study Of The Narrogin Townsite, Edward K. Crossley
Resource management technical reports
A groundwater study was carried out in the townsite of Narrogin, Western Australia, in April 2002. The study consisted of a drilling program to install a network of groundwater monitoring bores. This report contains background information for the town and its catchment, the climatic, geological and hydrogeological investigations, and conclusions on the town's salinity risk and recommendations for improved water management.
Narrogin Townsite Test Pumping Results 2003, Louise Hopgood
Narrogin Townsite Test Pumping Results 2003, Louise Hopgood
Resource management technical reports
Test pumping of a production bore in Narrogin took place for 24 hours in August 2003. Data generated by the test pumping was analysed along with groundwater monitoring, climate and geological data. Laboratory analyses of water samples from the production bore indicate very high levels of salinity and hardness which may lead to severe scaling and corrosion of pumps, pipes and pipe fittings.
Bremer-Gairdner Catchment Appraisal Report 2003, Tim D. Overheu
Bremer-Gairdner Catchment Appraisal Report 2003, Tim D. Overheu
Resource management technical reports
Assessment of the condition and future risks to agricultural and natural resources within the Bremer-Gairdner region in Western Australia using the Rapid Catchment Appraisal. Details include climate, geology, soil-landscape information, hydrology, waterways, wetlands and estuaries, natural vegetation, land use and infrastructure, agricultural production, demographics; soil degredation risks, hydrology risks, farming system impacts, vegetation condition and risks, infrastructure assets; and management options.
Kellerberrin Townsite Test Pumping Results 2003, Louise Hopgood
Kellerberrin Townsite Test Pumping Results 2003, Louise Hopgood
Resource management technical reports
A production bore in Kellerberrin, Western Australia, was test pumped for 24 hours in August 2003. Data generated by the pumping were analysed with groundwater monitoring, climate and geological data. Laboratory analyses of water samples from the production bore indicate a low pH and very high levels of salinity, hardness, sodium, chloride, iron, sulphate, aluminium and manganese. This is likely to lead to scaling, blockages, staining and/or corrosion of pumps, pipes and pipe fittings.
Groundwater Investigation Buntine-Marchagee Natural Diversity Recovery Catchment, Russell John Speed, M Strelein
Groundwater Investigation Buntine-Marchagee Natural Diversity Recovery Catchment, Russell John Speed, M Strelein
Resource management technical reports
A groundwater investigation was initiated in the Buntine-Marchagee Natural Diversity Recovery Catchment 200 kms north-east of Perth, Western Australia in 2002. The investigation aimed to install a regional groundwater monitoring network and characterise the regolith throughout the catchment. Drill site selection was based on establishing a series of transects to enable construction of hydrogeological cross-sections to enhance conceptual understanding of the catchment.
Infill Groundwater Study Of The Quairading Townsite, S Ghauri
Infill Groundwater Study Of The Quairading Townsite, S Ghauri
Resource management technical reports
An infill groundwater study of Quairading in Western Australia was carried out as part of the Rural Towns Program Community Bores Project to clarify reasons for localised moisture accumulation in buildings.
Groundwater Trends In The Kent-Frankland Sub-Region, Arjen Ryder
Groundwater Trends In The Kent-Frankland Sub-Region, Arjen Ryder
Natural resources published reports
The South Coast Regional Initiative Planning Team (SCRIPT) has divided the South Coast region of Western Australia into six sub-regions. Kent-Frankland covers the catchments of the Frankland, Gordon and Kent' Rivers. Approximately two-thirds (450,000 ha) has been cleared for agriculture. This publication describes the groundwater trends, risk of shallow watertables, and technical feasibility of salinity management on agricultural land.
Soil-landscape zones are spatial units based on geology and geomorphology. Since most groundwater processes in WA are controlled by the geologic and regolith properties, these zones can be used for allocating hydrological attributes, such as groundwater characteristics and trends. The hydrological …
Groundwater Trends In The Albany Hinterland Sub-Region, Arjen Ryder
Groundwater Trends In The Albany Hinterland Sub-Region, Arjen Ryder
Natural resources published reports
The South Coast Regional Initiative Planning Team (SCRIPT) has divided the South Coast region of Western Australia into six sub-regions The Albany Hinterland is in the western portion (see Figure 1). It is bounded by the Pallinup River in the east. Stirling Ranges to the north and the Kent River catchment boundary in the west. Two-thirds (580.000 ha) of the sub-region has been cleared for agriculture This publication describes the groundwater trends, risk of shallow watertables, and technical feasibility of salinity management within the agricultural land
Soil-landscape zones are spatial units based on geology and geomorphology. Since most groundwater processes …
Hydrologic Variations Within Created And Natural Wetlands In Southeastern Virginia, Aaron Dyer Despres
Hydrologic Variations Within Created And Natural Wetlands In Southeastern Virginia, Aaron Dyer Despres
OES Theses and Dissertations
The hydrology of wetlands, particularly how wetland soils collect, store, and redistribute water strongly affects how wetland systems function. In created wetlands, construction processes and materials influence the hydrology and consequently, the potential for successful reestablishment of target vegetation communities. During 2002–2004, the Virginia Department of Transportation constructed large mitigation wetlands on two different Quaternary aged surfaces with very similar hydrogeomorphic conditions. The Sandy Bottom Nature Park site (SBNP) located in Hampton, VA and rests on the sandy loam Tabb Formation while the Charles City Wetland site (CCW) lies on the older and clay-rich Shirley Formation. This study documents and …
Moore River : Catchment Appraisal 2003, A Alderman, M Clarke, Natural Heritage Trust (Australia), Moore River Catchment Support Team (Wa)
Moore River : Catchment Appraisal 2003, A Alderman, M Clarke, Natural Heritage Trust (Australia), Moore River Catchment Support Team (Wa)
Resource management technical reports
Using the Rapid Catchment Appraisal process, this report summarises current information for the Moore River catchment, Western Australia. The headwaters of the Moore River commence in Perenjori, Carnamah and Dalwallinu shires and drain southwards through Moora.
High Altitude Himalayan Climate Inferred From Glacial Ice Flux, Joel T. Harper, Neil Humphrey
High Altitude Himalayan Climate Inferred From Glacial Ice Flux, Joel T. Harper, Neil Humphrey
Geosciences Faculty Publications
Glaciological processes are modeled to investigate precipitation patterns and the resulting mass flux of snow and ice across Himalayan topography. Our model tracks the accumulation and ablation of snow and ice and the transport of snow and ice across the topography by glacier motion. We investigate high elevation precipitation on the Annapurna Massif by comparing the existing ice cover with model-simulated glaciers produced by a suite of different precipitation scenarios. Our results suggest that precipitation reaches a maximum level well below the elevation of the highest peaks. Further, essentially no snow accumulates on the topography above an elevation of 6200–6300 …
West Mortlock Catchment Appraisal 2002, D G. Cummins
West Mortlock Catchment Appraisal 2002, D G. Cummins
Resource management technical reports
This report describes the soils, hydrology, natural vegetation and farming systems of the West Mortlock catchment and provides information on the threats to agriculture, infrastructure and natural resources caused by land degradation. West Mortlock covers over 700,000 hectares in the central wheatbelt. Rapid Catchment Appraisal aims to document salinity risk and management options by addressing all threats to the natural resource base, rather than isolating salinity as a separate issue.
Geology Of The Deseret Peak East 7.5' Quadrangle, Tooele County, Utah, And Impacts For Hydrology Of The Region, Torrey J. Copfer
Geology Of The Deseret Peak East 7.5' Quadrangle, Tooele County, Utah, And Impacts For Hydrology Of The Region, Torrey J. Copfer
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Detailed geologic mapping of the Deseret Peak East 7.5' Quadrangle yields new interpretations regarding the stratigraphy of the Oquirrh Basin, fault and fold geometry, and structural evolution of the region. The Stansbury Range consists of the north-south-trending Deseret anticline. Basal Mississippian units rest unconformably on Cambrian beds in the central part of the range. Paleozoic uplift, Mesozoic contraction, and Cenozoic extension have created a series of broad folds, large thrust faults, and several normal faults.
The area is dominated by bedrock springs, with the presence of abundant and thick Quaternary deposits unrelated to Pleistocene glaciation, burying drainages, and mantling hillslopes. …