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2012

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Articles 31 - 60 of 120

Full-Text Articles in Hydrology

U.S. Drought Monitor, September 25, 2012, Anthony Artusa Sep 2012

U.S. Drought Monitor, September 25, 2012, Anthony Artusa

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for September 25, 2012 (9/25/12) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


U.S. Drought Monitor, September 18, 2012, David Simeral Sep 2012

U.S. Drought Monitor, September 18, 2012, David Simeral

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for September 18, 2012 (9/18/12) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


U.S. Drought Monitor, September 11, 2012, David Simeral Sep 2012

U.S. Drought Monitor, September 11, 2012, David Simeral

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for September 11, 2012 (9/11/12) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


U.S. Drought Monitor, September 4, 2012, Brian Fuchs Sep 2012

U.S. Drought Monitor, September 4, 2012, Brian Fuchs

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for September 4, 2012 (9/4/12) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle.


Analytical Modeling Of Irrigation And Land Use Effects On Streamflow In Semi-Arid Conditions: Frenchman Creek, Nebraska, Jonathan P. Traylor Sep 2012

Analytical Modeling Of Irrigation And Land Use Effects On Streamflow In Semi-Arid Conditions: Frenchman Creek, Nebraska, Jonathan P. Traylor

Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research

With proliferation of various numerical models, water budget studies commonly resort to numerical modeling techniques. However, availability and uncertainty in input data limit advantages of this approach. Often, analytical models capture the major traits of the watersheds and can assimilate important data. We developed a model for baseflow-dominated watersheds and apply it to Frenchman Creek in southwestern Nebraska. Frenchman Creek has experienced large streamflow reductions since the 1950s. The cause of these reductions is a combination of irrigation, conservation terrace construction, and other land use changes. However, the influence of each factor has not been well quantified. The objective of …


Nebraska's Wetlands: Their Wildlife And Ecology, Paul A. Johnsgard Sep 2012

Nebraska's Wetlands: Their Wildlife And Ecology, Paul A. Johnsgard

Conservation and Survey Division: Faculty and Staff Publications

1 An Overview of Nebraska's Wetlands

2 The Missouri Valley • Natural History Profiles of Some Missouri Valley Wetland Species • The Missouri Valley Wetlands

3 The Niobrara Valley Region • Natural History Profiles of Some Niobrara Valley Wetland Species • The Niobrara Valley Wetlands

4 The Platte Valley Region • Natural History Profiles of Some Platte Valley Wetland Species • The Central Platte Valley Wetlands • The North Platte Valley Wetlands

5 Other River Valley Wetlands • Natural History Profiles of Some Typical Riverine Species • The Elkhorn Valley Wetlands • The Loup Valley Wetlands • The Republican Valley …


"In Space" Or "As Space"?: A New Model, Charles H. Smith, Megan Derr Aug 2012

"In Space" Or "As Space"?: A New Model, Charles H. Smith, Megan Derr

DLPS Faculty Publications

In this analysis natural systems are posed to subsystemize in a manner facilitating both structured information/energy sharing and an entropy maximization process projecting a three-dimensional, spatial, outcome. Numerical simulations were first carried out to determine whether n × n input-output matrices could, once entropymaximized, project a three-dimensional Euclidean metric. Only 4 × 4 matrices could; a small proportion passed the test. Larger proportions passed when grouped random patterns on and within two- and three-dimensional forms were tested. Topographical patterns within 31 stream basin systems in the state of Kentucky, USA, were then similarly investigated, anticipating that the spatial configuration of …


U.S. Drought Monitor, August 28, 2012, Brian Fuchs Aug 2012

U.S. Drought Monitor, August 28, 2012, Brian Fuchs

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for August 28, 2012 (8/28/12) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle.


U.S. Drought Monitor, August 21, 2012, Michael J. Brewer, Liz Love-Brotak Aug 2012

U.S. Drought Monitor, August 21, 2012, Michael J. Brewer, Liz Love-Brotak

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for August 21, 2012 (8/21/12) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle.


U.S. Drought Monitor, August 14, 2012, Michael J. Brewer, Liz Love-Brotak Aug 2012

U.S. Drought Monitor, August 14, 2012, Michael J. Brewer, Liz Love-Brotak

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for August 14, 2012 (8/14/12) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle.


U.S. Drought Monitor, August 7, 2012, Mark D. Svoboda Aug 2012

U.S. Drought Monitor, August 7, 2012, Mark D. Svoboda

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for August 7, 2012 (8/7/2012) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle.


Pastoral Lease Assessment Using Geospatial Analysis, T P. Robinson, P E. Novelly, R Corner, Philip Thomas, A Russell-Browm Aug 2012

Pastoral Lease Assessment Using Geospatial Analysis, T P. Robinson, P E. Novelly, R Corner, Philip Thomas, A Russell-Browm

Resource management technical reports

Seven remote sensing based Vegetation Indices (NDSVI, STVI-3, NDVI, Green + Red, Red, Land Monitor and STVI-1) were tested for their potential to discriminate between “poor” and “good” range condition assessments in Western Australia’s pastoral rangelands. Indices were computed using the Australian Greenhouse Office National Carbon Accounting System (AGO NCAS) repository of calibrated Landsat TM/ETM+ mosaics. Discrimination potential was assessed at two levels of stratification – station level (identical to the stratification used to collect the traverse data), and functional group level (an aggregation of similar land systems);


Groundwater Quality Assessment From Domestic Water Wells In The Fayetteville Shale Gas Play Area In Central Arkansas, Anna Marie Nottmeier Aug 2012

Groundwater Quality Assessment From Domestic Water Wells In The Fayetteville Shale Gas Play Area In Central Arkansas, Anna Marie Nottmeier

Graduate Theses and Dissertations

This study establishes a spatially distributed domestic water well groundwater quality data set, throughout the Fayetteville Shale Gas Play (FSGP) in central Arkansas. The data set facilitates characterization of the geology and groundwater quality across the study area, benefits residents who may have concerns about the potential impacts on their well water quality, and provides a groundwater quality basis to which complaints can be compared and resolved. The assessment included: research of the study area, site reconnaissance, water sampling and collection, interviews with owners of the property, analytical analysis, Quality Assurance and Quality Control, and groundwater data interpretation.

The study …


U.S. Drought Monitor, July 31, 2012, Mark D. Svoboda Jul 2012

U.S. Drought Monitor, July 31, 2012, Mark D. Svoboda

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for July 31, 2012 (7/31/12) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle.


The Effects Of Fractures On The Occurrence And Distribution Of Arsenic In The Upper Floridan Aquifer During Aquifer Storage And Recovery, William Charles Hutchings Jul 2012

The Effects Of Fractures On The Occurrence And Distribution Of Arsenic In The Upper Floridan Aquifer During Aquifer Storage And Recovery, William Charles Hutchings

USF Tampa Graduate Theses and Dissertations

ABSTRACT

Aquifer storage and recovery (ASR) is used world-wide to supplement available water supplies by storing surplus water in aquifers and recovering it during periods of drought and increased demand. The use of ASR as an option for increasing available municipal irrigation and fresh water supplies is threatened as a result of the mobilization of arsenic in some aquifers during ASR. Arsenic is liberated from arsenic-bearing sulfide minerals as a result of the mixing of oxidizing injected water with reducing insitu groundwater. Fracture networks can have significant influence on the migration and distribution of arsenic in the Upper Floridan Aquifer …


U.S. Drought Monitor, July 10, 2012 Jul 2012

U.S. Drought Monitor, July 10, 2012

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for July 10, 2012 (7/10/12) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans.


U.S. Drought Monitor, July 3, 2012 Jul 2012

U.S. Drought Monitor, July 3, 2012

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for July 3, 2012 (7/3/12) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans.


Soil Geomorphology Of The Eastern Sevilleta Long Term Ecological Research Site, Debra Bryan-Ricketts Jul 2012

Soil Geomorphology Of The Eastern Sevilleta Long Term Ecological Research Site, Debra Bryan-Ricketts

Earth and Planetary Sciences ETDs

Soils in the arid to semi-arid piedmont landscapes of central New Mexico were examined in order to evaluate surficial processes and landscape evolution in the central Rio Grande Rift. These soils were found to contain key information regarding pedologic and geomorphic responses to climate change, rifting and base level drop. A rare association of sepiolite and palygorskite occurs in old soils formed in eolian fines. Pedologic and mineralogical data indicate that palygorskite formed by transformation of dust-borne, aluminum-rich minerals, and that sepiolite subsequently formed by transformation of palygorskite. The association of these two minerals, and geomorphic observations, confirm the existence …


Droughtscape, Summer 2012, National Drought Mitigation Center Jul 2012

Droughtscape, Summer 2012, National Drought Mitigation Center

DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)

Contents

Director’s report 1

Drought expanse 1

Upcoming ranch workshops. 3

Drought outlook and review 4

Spring impacts summary 6

Hawaii impact workshops 9

Remote sensing of drought. 10

China workshop . 12


Observations Of Localised Effects Of The Busselton Compensating Basins On Surface Water, Groundwater And Soil Salinity, D L. Bennett, Richard J. George Dr Jun 2012

Observations Of Localised Effects Of The Busselton Compensating Basins On Surface Water, Groundwater And Soil Salinity, D L. Bennett, Richard J. George Dr

Resource management technical reports

Between 2001 and 2009 the Water Corporation constructed three flood-compensating basins on farmland in the Vasse and Sabina river catchments, upstream of in the city of Busselton. The basins are designed to reduce the risk of flooding in urban areas of Busselton by temporarily storing and then regulating runoff during flood events. This report fulfils the reporting requirements of a contract between the Water Corporation and the Department of Agriculture and Food. Data relating to the local groundwater and surface-water dynamics, salinity, nutrients and pH, plus changes to shallow and deep-soil salinity (from repeat ground-based electromagnetic induction [EM] surveying), was …


4th International Union Of Soil Sciences Soil Classification Conference Field Tour Guidebook Jun 2012

4th International Union Of Soil Sciences Soil Classification Conference Field Tour Guidebook

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


North Central Region Soil Survey Conference Field Tour Jun 2012

North Central Region Soil Survey Conference Field Tour

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Integrating Depositional Facies And Stratigraphy In Characterizing Hydrothermal Dolomite Reservoirs: Trenton Group Of The Albion-Scipio Trend, Michigan, Marcel R. Robinson Jun 2012

Integrating Depositional Facies And Stratigraphy In Characterizing Hydrothermal Dolomite Reservoirs: Trenton Group Of The Albion-Scipio Trend, Michigan, Marcel R. Robinson

Masters Theses

Reservoir characterization of carbonate rocks requires understanding the role of depositional and diagenetic parameters in reservoir distribution. This is especially true for the diagenetically-altered and structurally-influenced Trenton-Black River reservoirs of the Michigan Basin. Evaluating the depositional evolution and reservoir characteristics of component depositional facies through modeling and stratigraphic reconstruction would aid in exploration and characterization through providing a prediction tool for reservoir distribution, both within and outside of the Michigan Basin.

Results indicate that reservoir development is controlled by primary rock fabric related to depositional facies. Depositional and stratigraphic reconstructions show facies distribution trends occur consistently and therefore predictably away …


Geophysical And Remote Sensing Applications For A Better Understanding Of The Structural Controls On Groundwater Flow In The Lucerne Valley, California, Dale R. Dailey Jun 2012

Geophysical And Remote Sensing Applications For A Better Understanding Of The Structural Controls On Groundwater Flow In The Lucerne Valley, California, Dale R. Dailey

Masters Theses

An integrated study was conducted in the Mojave Basin to investigate the potential role of faults and basement uplifts for groundwater flow in the Mojave Desert. Observations made include: 1) Very Low Frequency (VLF) measurements across mapped (using LIDAR and Geoeye-1 imagery) fault traces showed significant radio field dip angles indicative of presence of shallow sub-vertical, sheet-like conductors; many of the VLF tilt peaks coincided with changes in the magnetic profiles; 2) Vertical Electric Soundings indicate shallow basement west of, and parallel to, the Helendale Fault and deep saturated zones east of the fault/basement outcrop (F/B); and 3) isotopic analyses …


A Localized Investigation Of High Resolution Groundwater Flow Properties Of The Saginaw Aquifer Mason, Michigan, Amanda Hayden Jun 2012

A Localized Investigation Of High Resolution Groundwater Flow Properties Of The Saginaw Aquifer Mason, Michigan, Amanda Hayden

Masters Theses

High resolution groundwater models can aid in better management of groundwater resources through more accurate characterization and quantification of aquifer systems. Detailed assessments of flow properties in the context of sedimentary facies can provide high quality data input for more accurate groundwater models.

The Pennsylvanian Grand River and Saginaw bedrock formations comprise the Saginaw Aquifer located in the Lansing, Michigan Tri-County region. The Saginaw Aquifer consists of a predominately shale and sandstone successions. These sandstone facies range up to 40 meters thick, and supply a significant amount water resources to the Lansing Tri-County area. Data used in this study was …


A Report On The Gascoyne River Catchment Following The 2010/11 Flood Events, Peter-Jon A. Waddell, P W.E Thomas, Paul A. Findlater May 2012

A Report On The Gascoyne River Catchment Following The 2010/11 Flood Events, Peter-Jon A. Waddell, P W.E Thomas, Paul A. Findlater

Resource management technical reports

In December 2010 an extreme tropical storm resulted in widespread flooding at Carnarvon and across the catchment. Another two flood events followed during the summer of 2010–11

The rationale for this assessment is to provide illustrative evidence on the role that perennial vegetation groundcover management has in influencing the risk of flooding and soil loss in the catchment. It may be possible that the impact of flooding associated with extreme storm events can be reduced. This report focuses on catchment condition and is not a review of the pastoral industry’s economic viability.


The Use Of Diatoms To Infer Environmental Change Of The Lower White River, Southeastern Arkansas, Ruchi Bhattacharya May 2012

The Use Of Diatoms To Infer Environmental Change Of The Lower White River, Southeastern Arkansas, Ruchi Bhattacharya

Graduate Theses and Dissertations

This dissertation describes the limnology of the lower White River oxbow lakes in southeast Arkansas, inundated by the major 2008 spring flood. The flood water and sediment deposited in oxbow lakes were analyzed for water chemistry, sediment geochemistry and diatom assemblages and used as an analogue for past floods. The 2008 spring flood inundated and homogenized the entire floodplain; also represented by the predominantly planktonic diatom assemblage suggesting riverine input. Indicator species for eutrophication were also recorded consistent with the high nutrient content in the lakes. However, the variance in the surface diatom assemblage was best explained by the lake …


Assessment Of The Rainfall Response On Headwater Streams In Lower Coastal Plain South Carolina, Thomas Epps May 2012

Assessment Of The Rainfall Response On Headwater Streams In Lower Coastal Plain South Carolina, Thomas Epps

All Theses

Toward the goal of the assessment of the rainfall response on forested headwater catchments in the Lower Coastal Plain (LCP) of South Carolina, rainfall, streamflow, and groundwater elevation were monitored on two similar streams. Upper Debidue Creek (UDC) in coastal Georgetown County, South Carolina is slated for development and Watershed 80 (WS80) in the Francis Marion National Forest serves as an undeveloped reference watershed. Spatial rainfall variability was assessed at UDC and it was concluded that a single gage was sufficient to accurately measure rainfall for this watershed. Throughfall measurements at UDC indicate a seasonal difference that may influence seasonal …


Treatment Of Oilfield Produced Water Using A Pilot-Scale Constructed Wetland Treatment System, Michael Pardue May 2012

Treatment Of Oilfield Produced Water Using A Pilot-Scale Constructed Wetland Treatment System, Michael Pardue

All Theses

In recent years production of oil in sub-Saharan Africa has generated thousands of barrels of oilfield produced water (OPW). If water produced from oilfields in sub-Saharan Africa can be treated, this large volume of water has the potential for use in irrigation, which could decrease demand on existing water resources. In this investigation a pilot-scale constructed wetland treatment system (CWTS) consisting of three series: a free water surface flow (FWS) series, a subsurface flow (SSF) series, and a hybrid SSF series preceded by an oil-water separator (OWS), was utilized to treat OPW. Two major objectives were to: 1) assess treatment …


Understanding Of The Hydrologic Connections Between Wide-Channel And Adjacent Aquifers Using Numerical And Field Techniques, Cheng Cheng May 2012

Understanding Of The Hydrologic Connections Between Wide-Channel And Adjacent Aquifers Using Numerical And Field Techniques, Cheng Cheng

School of Natural Resources: Dissertations, Theses, and Student Research

Streambed sedimentary structure plays a vital role in controlling the interactions between surface water and groundwater. In the study, three rivers -the Big Blue River, the Little Blue River, and the lower reach of the Platte River in Nebraska were chosen to characterize the shallow streambed for the two types of rivers (braided and meandering rivers) and investigated the variations of the streambed electrical and hydraulic conductivities with depth. In-situ and laboratory permeameter tests were conducted to determine streambed hydraulic conductivity up to 20 m below the channel surface in the three rivers. Additionally, the electrical conductivity logs were obtained …