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University of Nebraska - Lincoln

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Articles 871 - 900 of 1647

Full-Text Articles in Water Resource Management

U.S. Drought Monitor, May 6, 2014, Mark D. Svoboda May 2014

U.S. Drought Monitor, May 6, 2014, Mark D. Svoboda

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for May 6, 2014 (5/6/14) 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.


Are Droughts Becoming More Frequent Or Severe In China Based On The Standardized Precipitation Evapotranspiration Index: 1951–2010?, Meixiu Yu, Qiongfang Li, Michael J. Hayes, Mark Svoboda, Richard R. Heim Jr. May 2014

Are Droughts Becoming More Frequent Or Severe In China Based On The Standardized Precipitation Evapotranspiration Index: 1951–2010?, Meixiu Yu, Qiongfang Li, Michael J. Hayes, Mark Svoboda, Richard R. Heim Jr.

National Drought Mitigation Center: Faculty Publications

The Standardized Precipitation Evapotranspiration Index (SPEI) was computed based on the monthly precipitation and air temperature values at 609 locations over China during the period 1951–2010.Various characteristics of drought across China were examined including: long-term trends, percentage of area affected, intensity, duration, and drought frequency. The results revealed that severe and extreme droughts have become more serious since late 1990s for all of China (with dry area increasing by ∼3.72% per decade); and persistent multi-year severe droughts were more frequent in north China, northeast China, and western northwest China; significant drying trends occurred over north China, the southwest region of …


Pore Water Extraction For Unsaturated Zone Isotope Research: An Investigation Using An Immiscible Displacement Fluid And A Centrifuge, Caitlin Burnett Weaver May 2014

Pore Water Extraction For Unsaturated Zone Isotope Research: An Investigation Using An Immiscible Displacement Fluid And A Centrifuge, Caitlin Burnett Weaver

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

Accurate and reliable pore water extraction techniques are important to an array of scientific fields including, but not limited to, hydrogeology, soil science, and paleoenvironmental research. The aim of the current project is to test the applicability of an immiscible displacement extraction technique for stable isotopes of water under a range of textural, hydrologic, and chemical conditions. In this study, laboratory experiments were conducted to establish the extent to which the proposed method 1) achieves sufficient yield for laboratory isotopic analyses, 2) results in isotopic exchange between water and the displacement fluid, 3) conserves initial isotopic compositions of spike test …


Water-Use Restriction Information: Information Sharing Between Public Water Systems And State Government Offices, Christopher Carparelli May 2014

Water-Use Restriction Information: Information Sharing Between Public Water Systems And State Government Offices, Christopher Carparelli

National Drought Mitigation Center: Faculty Publications

In many states there is an absence of communication between the state and local levels about many aspects of water resource management. This research examines the interaction between the state and local levels regarding water-use restrictions for public water systems (PWSs). This information is useful for state-level drought planning and mitigation through the assessment of drought impacts on public water supplies. Officials from five state-level entities that collect and disseminate local water-use restriction information were interviewed over the phone for this research. Each official was asked eleven questions about how and why their state collects and disseminates PWS water-use restriction …


U.S. Drought Monitor, April 29, 2014, Richard R. Heim Jr. Apr 2014

U.S. Drought Monitor, April 29, 2014, Richard R. Heim Jr.

United States Agricultural Commodities in Drought Archive

Drought map of the United States for April 29, 2014 (4/29/14) plus: United States crop areas experiencing drought (map), an approximate percentage of crop located in drought by state (bar graph), and the percentage of crop area located in drought during the past 52 weeks (line graph) for corn, soybeans, hay, cattle, and winter wheat.


U.S. Drought Monitor, April 22, 2014, Richard R. Heim Jr. Apr 2014

U.S. Drought Monitor, April 22, 2014, Richard R. Heim Jr.

United States Agricultural Commodities in Drought Archive

Drought map of the United States for April 22, 2014 (4/22/14) plus: United States crop areas experiencing drought (map), an approximate percentage of crop located in drought by state (bar graph), and the percentage of crop area located in drought during the past 52 weeks (line graph) for corn, soybeans, hay, cattle, and winter wheat.


Improving Drought Management For Transboundary River Basins In The United States Through Collaborative Environmental Planning, Crystal J. Bergman Apr 2014

Improving Drought Management For Transboundary River Basins In The United States Through Collaborative Environmental Planning, Crystal J. Bergman

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

Increasing demand for water and the uncertainty of climate change have put pressure on the global water supply, presenting one of the greatest challenges of the 21st Century for human development. Drought is a natural hazard that further compromises water supply and increases competition among water use sectors. These challenges confirm the need for comprehensive water supply and drought planning. Planning for water, however, is often conducted within political boundaries that are not consistent with the water resource’s natural boundaries, which can result in conflict. Collaborative environmental planning is a sub-discipline of planning that can address the occurrence of …


U.S. Drought Monitor, April 15, 2014, Brian Fuchs Apr 2014

U.S. Drought Monitor, April 15, 2014, Brian Fuchs

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for April 15, 2014 (4/15/14) 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, April 8, 2014, Brian Fuchs Apr 2014

U.S. Drought Monitor, April 8, 2014, Brian Fuchs

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for April 8, 2014 (4/8/14) 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, April 1, 2014, David Simeral Apr 2014

U.S. Drought Monitor, April 1, 2014, David Simeral

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for April 1, 2014 (4/1/14) 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.


Determining The Dynamics Of Agricultural Water Use: Cases From Asia And Africa, Lisa-Maria Rebelo, Robyn Johnston, Poolad Karimi, Peter G. Mccornick Apr 2014

Determining The Dynamics Of Agricultural Water Use: Cases From Asia And Africa, Lisa-Maria Rebelo, Robyn Johnston, Poolad Karimi, Peter G. Mccornick

Daugherty Water for Food Global Institute: Faculty Publications

Across Africa and Asia, water resources are being affected by a complex mixture of social, economic, and environmental factors. These include climate change and population growth, food prices, oil prices, financial disruptions, and political fluctuations. The need to produce more food will have one of the largest impacts on water and will continue to reshape the patterns of agricultural water use in major food-growing regions. With this increasing demand on water for agriculture, from large-scale irrigation to intensification of rainfed systems, it is becoming increasingly important to ensure that water resources decision-making has access to information that captures the spectrum …


Examples Of Non-Noetherian Domains Inside Power Series Rings, William Heinzer, Christel Rotthaus, Sylvia Wiegand Apr 2014

Examples Of Non-Noetherian Domains Inside Power Series Rings, William Heinzer, Christel Rotthaus, Sylvia Wiegand

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Given a power series ring R∗ over a Noetherian integral domain R and an intermediate field L between R and the total quotient ring of R∗, the integral domain A = L ∩ R∗ often (but not always) inherits nice properties from R∗ such as the Noetherian property. For certain fields L it is possible to approximate A using a localization B of a particular nested union of polynomial rings over R associated to A; if B is Noetherian, then B = A. If B is not Noetherian, we can sometimes identify the prime ideals of B that are not …


Droughtscape, Spring 2014, Kelly Smith Apr 2014

Droughtscape, Spring 2014, Kelly Smith

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

Contents

Director’s report

Outlook . 2

Drought climate recap 3

Drought impacts .

DroughtAtlas

Missouri River Basin pilot 9

NASA Horn of Africa project 10

U2U tools and social science . 12

Consulting for Turkey 14

Czech drought monitoring 14


Water Current, Volume 46, No. 2, Spring 2014 Apr 2014

Water Current, Volume 46, No. 2, Spring 2014

Water Current Newsletter

Planning Nearly Complete on July Water And Natural Resources Tour

Brozović Joining Daugherty Institute as Director of Policy

Meet the Faculty

From the Director: Lab Review, Research Collaborations, Upcoming Events

Prof, Alumnus Team To Fruther Evaporation Research

NSF Award Aids Li's Antibiotic Resistance Research

Tadesse leads $1.6M NASA project to predict drought, flood in Africa

USGS Technical Announcement: Assessing Nutrient Inputs to the Naion's Estuaries

Harnessing the Data Revolution: Ensuring Water and Food Security From Field to Global Scales

Ray Publishes Low Cost Emergency Water Purification Technologies

North Central Region Water Network

Water Current Focus on the NU Water Sciences …


U.S. Drought Monitor, March 25, 2014, David Simeral Mar 2014

U.S. Drought Monitor, March 25, 2014, David Simeral

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for March 25, 2014 (3/25/14) 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, March 18, 2014, Eric Luebehusen Mar 2014

U.S. Drought Monitor, March 18, 2014, Eric Luebehusen

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for March 18, 2014 (3/18/14) 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, March 11, 2014, Richard Tinker Mar 2014

U.S. Drought Monitor, March 11, 2014, Richard Tinker

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for March 11, 2014 (3/11/14) 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.


Similar Resilience Attributes In Lakes With Different Management Practices, Didier L. Baho, Stina Drakare, Richard K. Johnson, Craig R. Allen, David G. Angeler Mar 2014

Similar Resilience Attributes In Lakes With Different Management Practices, Didier L. Baho, Stina Drakare, Richard K. Johnson, Craig R. Allen, David G. Angeler

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Liming has been used extensively in Scandinavia and elsewhere since the 1970s to counteract the negative effects of acidification. Communities in limed lakes usually return to acidified conditions once liming is discontinued, suggesting that liming is unlikely to shift acidified lakes to a state equivalent to pre-acidification conditions that requires no further management intervention. While this suggests a low resilience of limed lakes, attributes that confer resilience have not been assessed, limiting our understanding of the efficiency of costly management programs. In this study, we assessed community metrics (diversity, richness, evenness, biovolume), multivariate community structure and the relative resilience of …


U.S. Drought Monitor, March 4, 2014, Brad Rippey Mar 2014

U.S. Drought Monitor, March 4, 2014, Brad Rippey

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for March 4, 2014 (3/4/14) 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.


Umphlett Qci March 2014, Natalie Umphlett Mar 2014

Umphlett Qci March 2014, Natalie Umphlett

High Plains Regional Climate Center: Staff Publications

Highlights for the Basin

Temperature and Precipitation Anomalies

Mountain Snowpack

Agriculture

Tourism and Recreation

Missouri Basin Flood Outlook

U.S. Seasonal Drought Outlook


Water Movement Through The Unsaturated Zone Of The High Plains Aquifer In The Central Platte Natural Resources District, Nebraska, 2008-12, Gregory V. Steele, Jason J. Gurdak, Christopher M. Hobza Feb 2014

Water Movement Through The Unsaturated Zone Of The High Plains Aquifer In The Central Platte Natural Resources District, Nebraska, 2008-12, Gregory V. Steele, Jason J. Gurdak, Christopher M. Hobza

United States Geological Survey: Water Reports and Publications

Uncertainty about the effects of land use and climate on water movement in the unsaturated zone and on groundwater recharge rates can lead to uncertainty in water budgets used for groundwater-flow models. To better understand these effects, a cooperative study between the United States Geological Survey (USGS) and the Central Platte Natural Resources District (CP NRD) was initiated in 2007 to determine field-based estimates of recharge rates in selected land-use areas of the CP NRD in Nebraska. Measured total water potential and unsaturated-zone profiles of tritium, chloride, nitrate as nitrogen, and bromide, along with groundwater-age dates, were used to evaluate …


U.S. Drought Monitor, February 25, 2014, Brad Rippey Feb 2014

U.S. Drought Monitor, February 25, 2014, Brad Rippey

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for February 25, 2014 (2/25/14) 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: Hay, Cattle, Winter wheat.


U.S. Drought Monitor, February 18, 2014, David Miskus Feb 2014

U.S. Drought Monitor, February 18, 2014, David Miskus

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for February 18, 2014 (2/18/14) 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.


Water Current, Volume 46, No. 1, Winter 2014 Feb 2014

Water Current, Volume 46, No. 1, Winter 2014

Water Current Newsletter

Planning Continues on July 2014 NU Water and Natural Resources Tour

Neale Joins DWFI as Director of Research

Meet the Faculty: Dr. Sathaporn (Tong) Onanong

From the Director, Chittaranjan Ray: Progress in Moving the Ball Forward

WRAP Meets in January

Water Center Hosts January Faculty Retreat

Annual NU Water Lectures Run Through April

Third Edition Groundwater Atlas Available

Sixth Annual Global Water for Food Conference Travels to Seattle

UNL Research Raises Concerns About Future Global Crop Yield Projections

January Scouting and Set-up Trip for the July 15-18 Summer Water and Natural Resources Tour

Water Leaders Academy Project Yields VideoGage Pages …


U.S. Drought Monitor, February 11, 2014, David Miskus Feb 2014

U.S. Drought Monitor, February 11, 2014, David Miskus

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for February 11, 2014 (2/11/14) 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, February 4, 2014, Anthony Artusa Feb 2014

U.S. Drought Monitor, February 4, 2014, Anthony Artusa

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for February 4, 2014 (2/4/14) 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, January 28, 2014, Anthony Artusa Jan 2014

U.S. Drought Monitor, January 28, 2014, Anthony Artusa

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for January 28, 2014 (1/28/14) 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, January 21, 2014, Richard Tinker Jan 2014

U.S. Drought Monitor, January 21, 2014, Richard Tinker

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for January 21, 2014 (1/21/14) 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, January 14, 2014, Eric Luebehusen Jan 2014

U.S. Drought Monitor, January 14, 2014, Eric Luebehusen

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for January 14, 2014 (1/14/14) 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: Cattle, Winter wheat.


U.S. Drought Monitor, January 7, 2014, Mark D. Svoboda Jan 2014

U.S. Drought Monitor, January 7, 2014, Mark D. Svoboda

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for January 7, 2014 (1/7/14) 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.