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Articles 181 - 210 of 691
Full-Text Articles in Earth Sciences
Fact Sheet: Study Of Long-Term Augmentation Options For The Water Supply Of The Colorado System, Black & Veatch, Ch2m Hill
Fact Sheet: Study Of Long-Term Augmentation Options For The Water Supply Of The Colorado System, Black & Veatch, Ch2m Hill
Navigating the Future of the Colorado River (Martz Summer Conference, June 8-10)
1 page.
"March 2008"
Material submitted by Les Lampe, Colorado River Water Consultants, for "Augmentation Options" program, Session 3: Mapping a New Course, Panel F: Some Policy Options and Solutions.
Colorado River Water Consultants is a project-specific partnership of engineering firms Black & Veatch and CH2MHill.
Materials For Presentation: Water Banks: Voluntary And Flexible Water Supplies For The Colorado River's Uncertain Future [Outline], Robert Wigington
Materials For Presentation: Water Banks: Voluntary And Flexible Water Supplies For The Colorado River's Uncertain Future [Outline], Robert Wigington
Navigating the Future of the Colorado River (Martz Summer Conference, June 8-10)
4 pages.
"Robert Wigington, The Nature Conservancy"
Slides: Water Banks: Voluntary And Flexible Water Supplies For The Colorado River's Uncertain Future, Robert Wigington
Slides: Water Banks: Voluntary And Flexible Water Supplies For The Colorado River's Uncertain Future, Robert Wigington
Navigating the Future of the Colorado River (Martz Summer Conference, June 8-10)
Presenter: Robert Wigington, The Nature Conservancy
7 slides
Slides: Law Of Colorado River: Where We Are, Where We Are Going, Steven M. Fitten
Slides: Law Of Colorado River: Where We Are, Where We Are Going, Steven M. Fitten
Navigating the Future of the Colorado River (Martz Summer Conference, June 8-10)
Presenter: Steven M. Fitten, Chief Counsel, International Boundary and Water Commission (IBWC)
14 slides
Full Conference Program With Abstracts, Jason S. Polk, Leslie A. North
Full Conference Program With Abstracts, Jason S. Polk, Leslie A. North
International 2011 Conference on Karst Hydrogeology and Ecosystems
No abstract provided.
Agenda: Navigating The Future Of The Colorado River, University Of Colorado Boulder. Natural Resources Law Center, Western Water Policy Program
Agenda: Navigating The Future Of The Colorado River, University Of Colorado Boulder. Natural Resources Law Center, Western Water Policy Program
Navigating the Future of the Colorado River (Martz Summer Conference, June 8-10)
Competition for scarce Colorado River water resources is nothing new, but the conflicts that prompted the seven basin states to negotiate the 1922 Colorado River Compact have grown considerably fiercer and more complex in recent decades. In 2007, responding to the challenges of increasing demand and sustained drought, the seven basin states and a number of other affected interests agreed to a set of interim guidelines for allocating Colorado River water in the event of shortages. This agreement represents an important evolution in the governance of the Colorado River, suggesting that the many interests in the basin can work together …
Report Surveys Colorado River Basin Leaders: Collaborative Approaches To Dwindling Supplies Are Highlighted, Sarah Bates, University Of Montana Missoula. Center For Natural Resources And Environmental Policy
Report Surveys Colorado River Basin Leaders: Collaborative Approaches To Dwindling Supplies Are Highlighted, Sarah Bates, University Of Montana Missoula. Center For Natural Resources And Environmental Policy
Navigating the Future of the Colorado River (Martz Summer Conference, June 8-10)
4 pages.
Press release "April 14, 2011"
"Executive Summary April 2011" of report, Thinking Like a River Basin: Leaders' Perspectives on Options and Opportunities in Colorado River Management
Full report available at:
http://www.carpediemwest.org/wp-content/uploads/Thinking_Like_A_River_Basin_8-20-13.pdf
Glacimarine Sedimentation Processes At Kronebreen And Kongsvegen, Svalbard, Laura M. Kehrl, Robert L. Hawley, Ross D. Powell, Julie Brigham-Grette
Glacimarine Sedimentation Processes At Kronebreen And Kongsvegen, Svalbard, Laura M. Kehrl, Robert L. Hawley, Ross D. Powell, Julie Brigham-Grette
Dartmouth Scholarship
Tidewater glaciers deposit sediment at their terminus, thereby reducing the relative water depth. Reduced water depth can lead to increased glacier stability through decreased rates of iceberg calving, glacier thinning and submarine melting. Here we investigate sedimentation processes at the termini of Kronebreen and Kongsvegen, Svalbard. We mapped the fjord floor bathymetry in August 2009 and calculate sedimentation rates based on our bathymetry and that from a similar study in 2005. A grounding-line fan is developing near the current position of the subglacial stream. An older, abandoned grounding-line fan that likely formed between ~1987 and 2001 is degrading near the …
Model Based Assessment Of Potential Impacts Of Climate Change On The Flow Of The Main Headwaters Of The Nile River: Equatorial Lakes Region And Blue Nile Basins, Fisseha G. Berhane
Model Based Assessment Of Potential Impacts Of Climate Change On The Flow Of The Main Headwaters Of The Nile River: Equatorial Lakes Region And Blue Nile Basins, Fisseha G. Berhane
Master's Theses
Berhane Fisseha. Model based assessment of potential impacts of climate change on the flow of the main headwaters of the Nile River: Equatorial Lakes Region and Blue Nile basins (Under the direction of Dr. Richard Anyah).
Spatially and temporally detailed assessment of the hydrologic processes of the main sources of the Nile River headwaters (Blue Nile basin and Equatorial Lakes Region) is vital for basin-wide scale management to cope with the pressing water problems due to burgeoning populations, a growing demand for electricity, irrigation for food production and possible climate change.
The main objectives of this study were to use …
Soil Development Processes On The Western Slope Of The Southern Sierra Nevada Mountains: A Geographic Study, Kristopher (Kris) Osterloh
Soil Development Processes On The Western Slope Of The Southern Sierra Nevada Mountains: A Geographic Study, Kristopher (Kris) Osterloh
Earth and Soil Sciences
No abstract provided.
From Sink To Resurgence: The Buffering Capacity Of A Cave System In The Tongass National Forest, Usa, Chris Groves, Melissa Hendrikson
From Sink To Resurgence: The Buffering Capacity Of A Cave System In The Tongass National Forest, Usa, Chris Groves, Melissa Hendrikson
Earth, Environmental, and Atmospheric Sciences Faculty Publications
The Tongass National Forest of Southeast Alaska, USA, provides a unique environment for monitoring the impact of the cave system on water quality and biological productivity. The accretionary terrane setting of the area has developed into a complex and heterogeneous geologic landscape which includes numerous blocks of limestone with intense karstification. During the Wisconsian glaciation, there were areas of compacted glacial sediments and silts deposited over the bedrock. Muskeg peatlands developed over these poorly drained areas. The dominant plants of the muskeg ecosystem are Sphagnum mosses, whose decomposition leads to highly acidic waters with pH as low as 2.4. These …
Weaber Plain Hydrogeology: Preliminary Results, Richard J. George Dr, John Andrew Simons, Paul Raper, Robert J. Paul, D L. Bennett, Rosemary H. Smith
Weaber Plain Hydrogeology: Preliminary Results, Richard J. George Dr, John Andrew Simons, Paul Raper, Robert J. Paul, D L. Bennett, Rosemary H. Smith
Resource management technical reports
In 2008, the Ord Irrigation Expansion Project was approved by the Western Australian Government to develop irrigated agriculture on the Weaber Plain. Construction of the M2 supply channel connecting the ORIA and Weaber Plain, and the final period of irrigation design, environmental management and related approval processes commenced later in 2009. This process followed a protracted period of public and private industry planning and environmental assessment (Kinhill 2000). As a part of the environmental planning and approvals process, the WA Government was required to prepare a groundwater management plan and a hydrodynamic plan. These plans were to address potential issues …
Weaber Plain Aquifer Test Results, Robert Paul, Paul Raper, John Andrew Simons, Grantley Stainer, Richard J. George
Weaber Plain Aquifer Test Results, Robert Paul, Paul Raper, John Andrew Simons, Grantley Stainer, Richard J. George
Resource management technical reports
As a part of the environmental planning and approvals process, the state government was required to prepare Groundwater Management and Hydrodynamic Plans. These plans are to address potential issues of salinity and water quality that could result from the development of irrigated agriculture on the Weaber Plain. The Weaber Plain groundwater modelling report (KBR 2010a) identified several options to manage watertables and salinity
Production bores 10WP35PB and 10WP36PB were drilled in the palaeochannel on sites selected from the interpretation of airborne geophysics.
Building A Sustainable Network Of Drought Communities, Deborah J. Bathke, Nicole Wall, Jeff Nothwehr, Kelly Helm Smith, Donna L. Woudenberg, Tonya K. Bernadt, Crystal Bergman, Joseph P. Robine, Michael Hayes, Mark Svoboda, Lisa Darby, Roger S. Pulwarty, The National Drought Mitigation Center, The National Integrated Drought Information System Program Office
Building A Sustainable Network Of Drought Communities, Deborah J. Bathke, Nicole Wall, Jeff Nothwehr, Kelly Helm Smith, Donna L. Woudenberg, Tonya K. Bernadt, Crystal Bergman, Joseph P. Robine, Michael Hayes, Mark Svoboda, Lisa Darby, Roger S. Pulwarty, The National Drought Mitigation Center, The National Integrated Drought Information System Program Office
High Plains Regional Climate Center: Staff Publications
The first step in managing large-scale (national) collaborations and networks is to consider and address how a group and a potential partnership may match up (Luther, 2005). To explore this concept and many other collaborative concepts, the National Integrated Drought Information System (NIDIS) hosted a workshop, “Building a Sustainable Network of Drought Communities,” which was facilitated by the National Drought Mitigation Center (NDMC) in Chicago, IL, June 8-9, 2011.
The workshop explored current examples of good communication and lessons learned within the realm of drought planning in order to address a future NIDIS Engaging Preparedness Communities (EPC) working group that …
Soil Test And Phosphorus Rate For High Rainfall Clover Pastures, Robert Summers, David Weaver
Soil Test And Phosphorus Rate For High Rainfall Clover Pastures, Robert Summers, David Weaver
Bulletins 4000 -
Essential information for soil testing to determine the phosphorus fertiliser requirements for clover pastures in high rainfall coastal areas of Western Australia. Includes procedures for soil sampling, tissue testing, liming, when to apply fertiliser, how to decide on the target production level, how much fertiliser is required and type of fertiliser.
Groundwater Research In Middle Earth, Thomas Lapoint
Groundwater Research In Middle Earth, Thomas Lapoint
Liberal Arts and Engineering Studies
My senior project focused on studying saltwater intrusion in a coastal town of New Zealand. I feel lucky that I was able to travel to such a distant place, conduct research that was insightful and interesting, and immerse myself in an international culture all in the name of my education. As a Liberal Arts and Engineering Studies student, I aim to analyze not only the cultural differences and similarities that the foreign environment offers to me but also the detailed, technical, engineering aspect of my research. I believe that my education should be approached with a well rounded perspective that …
Go Farm, Goleta: Urban Agriculture Protection For Eastern Goleta Valley, Eli M. Krispi
Go Farm, Goleta: Urban Agriculture Protection For Eastern Goleta Valley, Eli M. Krispi
Master's Theses
This paper explores two potential land use planning strategies that can be used to preserve and enhance the economic viability of agricultural operations surrounded by suburban development in Santa Barbara County’s Eastern Goleta Valley: buffers between agriculture and other land uses, and agritourism. In the case of buffers, academic literature is examined to determine how effective buffers are at various tasks (filtering runoff, mitigating dust and wind, providing habitat, etc.) and how to construct buffers to maximize their effectiveness. Land use plans and codes from several California jurisdictions are studied to see how buffers are put to use. Academic literature …
Landslide Susceptibility In Tryon State Park, Oregon, Tracy E. Handrich
Landslide Susceptibility In Tryon State Park, Oregon, Tracy E. Handrich
Anthós
LIDAR and topographic data were used to identify areas of high landslide susceptibility. An arctangent equation was used to calculate slope angle, design criteria of susceptibility and designate zones of high, moderate, and low risk.
Secretive Marsh Bird Species Co-Occurrences And Habitat Associations Across The Midwest, Usa, Jason R. Bolenbaugh, Sarah E. Lehnen, David G. Krementz
Secretive Marsh Bird Species Co-Occurrences And Habitat Associations Across The Midwest, Usa, Jason R. Bolenbaugh, Sarah E. Lehnen, David G. Krementz
United States Geological Survey: Staff Publications
Because secretive marsh birds are difficult to detect, population status and habitat use for these birds are not well known. We conducted repeated surveys for secretive marsh birds across 264 sites in the Upper Mississippi River and Great Lakes Joint Venture region to estimate abundance, occupancy, and detection probabilities during the 2008 and 2009 breeding seasons. We identified species groups based on observed species co-occurrences. Two species, least bittern Ixobrychus exilis and American bittern Botaurus lentiginosus, co-occurred with other species less often than expected by chance, and two species groups, rails (Virginia rail Rallus limicola and sora Porzana carolina) and …
Crustal Structure And Evolution Beneath The Colorado Plateau And The Southern Basin And Range Province: Results From Receiver Function And Gravity Studies, Lamuail Bashir, Stephen S. Gao, Kelly H. Liu, Kevin Lee Mickus
Crustal Structure And Evolution Beneath The Colorado Plateau And The Southern Basin And Range Province: Results From Receiver Function And Gravity Studies, Lamuail Bashir, Stephen S. Gao, Kelly H. Liu, Kevin Lee Mickus
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Over the past several decades, contrasting models have been proposed for the physical and chemical processes responsible for the uplift and long-term stability of the Colorado Plateau (CP) and crustal thinning beneath the Basin and Range Province (BRP) in the southwestern United States. Here we provide new constraints on the models by modeling gravity anomalies and by systematically analyzing over 15,500 P-to-S receiver functions recorded at 72 USArray and other broadband seismic stations on the southwestern CP and the southern BRP. Our results reveal that the BRP is characterized by a thin crust (28.2 ± 0.5 km), a mean V …
The Impact Of Modern Weathering On The Geochemistry Of A Marine Permo-Triassic Boundary Section, Jeremy Christopher Williams
The Impact Of Modern Weathering On The Geochemistry Of A Marine Permo-Triassic Boundary Section, Jeremy Christopher Williams
Graduate Masters Theses
The Permian-Triassic Boundary (PTB) marks the end-Permian extinction, the greatest mass extinction recorded in Earth's history. The Attargoo PTB section located in Spiti Valley, Himachal Pradesh, India was situated along the north continental margin of Gondwana-land in the Neo-Tethys Ocean during the end-Permian extinction. In Spiti Valley, PTB sections such as Attargoo are exposed by a thin (~ 2cm) ferruginous layer separating the Permian black shale from Triassic Limestone. Studies that have presented geochemical data to support a theory of the end-Permian extinction lack any interpretation of post-depositional effects on Spiti Valley PTB sections. In order to accurately present a …
Taxonomic Composition, Paleoecology And Biostratigraphy Of Late Cretaceous Diatoms From Devon Island, Nunavut, Canadian High Arctic, Jakub Witkowski, David M. Harwood, Karen Chin
Taxonomic Composition, Paleoecology And Biostratigraphy Of Late Cretaceous Diatoms From Devon Island, Nunavut, Canadian High Arctic, Jakub Witkowski, David M. Harwood, Karen Chin
Department of Earth and Atmospheric Sciences: Faculty Publications
Upper Cretaceous sediments of the Kanguk Formation exposed in Eidsbotn and Viks Fiord grabens on Devon Island, Nunavut, Canadian High Arctic, yielded 91 fossil marine diatom species and varieties (including indeterminate taxa), representing 41 genera. Excellent preservation of the assemblages was aided by shallow burial, protection in downfaulted linear grabens, and the presence of abundant volcanic material. Planktonic species and resting spores comprise nearly 70% of the diatom assemblage, and provided abundant food resources for the Late Cretaceous Arctic ecosystem. Deposition of the approximately 225 m-thick stratigraphic sequence was predominantly in a shallow marine neritic setting, with an upward progression …
The Green, Blue And Grey Water Footprint Of Crops And Derived Crop Products, Mesfin Mekonnen, Arjen Y. Hoekstra
The Green, Blue And Grey Water Footprint Of Crops And Derived Crop Products, Mesfin Mekonnen, Arjen Y. Hoekstra
Daugherty Water for Food Global Institute: Faculty Publications
Abstract. This study quantifies the green, blue and grey water footprint of global crop production in a spatially-explicit way for the period 1996–2005. The assessment improves upon earlier research by taking a high-resolution approach, estimating the water footprint of 126 crops at a 5 by 5 arc minute grid. We have used a grid-based dynamic water balance model to calculate crop water use over time, with a time step of one day. The model takes into account the daily soil water balance and climatic conditions for each grid cell. In addition, the water pollution associated with the use of nitrogen …
Dendrochronological Dating Of The Johnson House, Perry County, Ohio
Dendrochronological Dating Of The Johnson House, Perry County, Ohio
Historic Structures
Dating historical structures in Perry County, Ohio. The Historical Structures collection consists of reports that are the resoult of dendochronological analysis of timbers from structures in Pennsylvania and Ohio. Contributors: Theisen, Jon; Wiles, Greg
Dendrochronological Dating Of Perry County District Library, Somerset, Ohio
Dendrochronological Dating Of Perry County District Library, Somerset, Ohio
Historic Structures
Dating historical structures in Somerset, Ohio 2011. The Historical Structures collection consists of reports that are the resoult of dendochronological analysis of timbers from structures in Pennsylvania and Ohio. Contributors: Mudd, Anna; Theisen, Jon; Wiles, Greg
Dendrochronological Dating Of The Linnabary House, Worthington, Ohio
Dendrochronological Dating Of The Linnabary House, Worthington, Ohio
Historic Structures
Dating historical structures in Worthington, Ohio 2011. The Historical Structures collection consists of reports that are the result of dendochronological analysis of timbers from structures in Pennsylvania and Ohio. Contributors: Theisen, Jon; Wiles, Greg
Dendrochronological Dating Of The Old Rectory, Worthington, Ohio
Dendrochronological Dating Of The Old Rectory, Worthington, Ohio
Historic Structures
Dating historical structures in Worthington, Ohio. Dating historical structures in Worthington, Ohio. The Historical Structures collection consists of reports that are the result of dendochronological analysis of timbers from structures in Pennsylvania and Ohio. Contributors: Theisen, Jon; Wiles, Greg
Effect Of Attenuation Relationships On Seismic Site Response Analysis, Maryam Motamed
Effect Of Attenuation Relationships On Seismic Site Response Analysis, Maryam Motamed
Morehead State Theses and Dissertations
Presented to the faculty of the College of Science and Technology at Morehead State University in partial fulfillment of the requirement for the Degree of Master of Science by Maryam Motamed on May 12, 2011.
Historical Legacies, Information And Contemporary Water Science And Management, Daniel J. Bain, Jennifer A. S. Arrigo, Mark B. Green, Brian A. Pellerin, Charles J. Vörösmarty
Historical Legacies, Information And Contemporary Water Science And Management, Daniel J. Bain, Jennifer A. S. Arrigo, Mark B. Green, Brian A. Pellerin, Charles J. Vörösmarty
Advanced Science Research Center
Hydrologic science has largely built its understanding of the hydrologic cycle using contemporary data sources (i.e., last 100 years). However, as we try to meet water demand over the next 100 years at scales from local to global, we need to expand our scope and embrace other data that address human activities and the alteration of hydrologic systems. For example, the accumulation of human impacts on water systems requires exploration of incompletely documented eras. When examining these historical periods, basic questions relevant to modern systems arise: (1) How is better information incorporated into water management strategies? (2) Does any point …
The Formation History Of Layered Chondrules In Acfer-139 (Cr2), Matt Downen
The Formation History Of Layered Chondrules In Acfer-139 (Cr2), Matt Downen
Mahurin Honors College Capstone Experience/Thesis Projects
Chondrules are spherical grains made of silicates and metal that represent some of the oldest materials our solar system. Acfer-139 (CR) is a carbonaceous chondrite with large multilayered chondrules. The multilayered chondrules are composed of a silicate core surrounded by alternating layers of silicates and metals. Serial sectioning was used to analyze the sample in three dimensions. EMPA and LA-ICP-MS were used to create elemental maps of Acfer-139 (CR2) and determine the geochemistry of different layers in each thick section cut. XRCMT was used to construct a 3-D model of a large multilayered chondrule named Ch-1 with concentric layers of …