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Articles 2011 - 2040 of 5272

Full-Text Articles in Hydrology

U.S. Drought Monitor, November 17, 2015, Richard R. Heim Jr. Nov 2015

U.S. Drought Monitor, November 17, 2015, Richard R. Heim Jr.

United States Agricultural Commodities in Drought Archive

Drought map of the United States for November 17, 2015 (11/17/15) 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 thepast 52 weeks (line graph) for corn, soybeans, hay, cattle, and winter wheat.


U.S. Drought Monitor, November 10, 2015, Richard Tinker Nov 2015

U.S. Drought Monitor, November 10, 2015, Richard Tinker

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for November 10, 2015 (11/10/15) 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.


Phosphorus Sorption Dynamics In Shallow Groundwater, Coastal Everglades, Florida, Usa, Hilary Flower Nov 2015

Phosphorus Sorption Dynamics In Shallow Groundwater, Coastal Everglades, Florida, Usa, Hilary Flower

USF Tampa Graduate Theses and Dissertations

For this dissertation I studied phosphorus (P) sorption dynamics in the shallow groundwater of the southern Everglades. In particular, I examined how the ambient water type governs soluble reactive P (SRP) availability through adsorption/desorption reactions with the aquifer matrix. Chapter 2 investigated how P sorption dynamics of the mangrove root zone sediment are affected by high bicarbonate brackish groundwater compared to both fresh groundwater and saltwater. The results from chapter 2 show that the sediment exhibited exceptionally low sorption efficiency in the high bicarbonate brackish water, which would allow ambient water SRP concentration to be maintained at a higher level. …


Evaluation Of Low-Cost Low Impact Development Practices In Southwest Florida For The Control Of Urban Runoff, Laura Kathren Rankin Nov 2015

Evaluation Of Low-Cost Low Impact Development Practices In Southwest Florida For The Control Of Urban Runoff, Laura Kathren Rankin

USF Tampa Graduate Theses and Dissertations

Stormwater management is required due to development and alteration of the natural environment. It is heavily regulated in Florida and at the national level. Over the last two decades, Low Impact Development (LID) has been promoted as a sustainable and environmentally friendly method of controlling urban runoff. Case studies, provided in Chapter 2, show that LIDs can restore watershed hydrology by balancing the water budget. The difference in runoff between pre-development and post-development appears to increase with soil perviousness. However, the potential for mitigating the impacts of urbanization through runoff reduction is also greater for pervious, sandy soils that dominate …


U.S. Drought Monitor, November 3, 2015, David Miskus Nov 2015

U.S. Drought Monitor, November 3, 2015, David Miskus

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for November 3, 2015 (11/3/15) 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.


Ua24 Mcicsl Newsletter - November 2015, Shannon R. Trimboli Education Coordinator Nov 2015

Ua24 Mcicsl Newsletter - November 2015, Shannon R. Trimboli Education Coordinator

MCICSL Newsletter

This issue includes the following:

Partners Recognized for Water Quality Research at Mammoth Cave National Park and Increasing Diversity in the Geosciences

Texas A&M – Galveston Students Participate in Citizen Science at Mammoth Cave National Park

Northern Kentucky University and the Mammoth Cave International Center for Science and Learning to Host Partners in the Parks Program at Mammoth Cave National Park

as well as education and research highlights, and MCICSL symposium information


The Founding Of The Robert B. Daugherty Water For Food Institute At The University Of Nebraska Nov 2015

The Founding Of The Robert B. Daugherty Water For Food Institute At The University Of Nebraska

Daugherty Water for Food Global Institute: Administrative Materials

University of Nebraska President J.B. Milliken drove to Omaha in to meet Robert Daugherty at his home. In the living room, the elder Daugherty was surrounded by Mogens Bay, his three sons and a covey of lawyers. Now 88 years old, the businessman had a reputation for being tough-minded and smart, a man who could intimidate, but also surprise with his ready sense of humor. In his long career, Daugherty had transformed agriculture and the rural landscape into the now familiar polka dot pattern, the signature of the center pivot irrigators Daugherty had popularized in the 1970s. He had started …


8000 Years Of Environmental Evolution Of Barrier–Lagoon Systems Emplaced In Coastal Embayments (Nw Iberia), Rita González-Villanueva, Marta Pérez-Arlucea, Susana Costas, Roberto Bao, Xose L. Otero, Ronald J. Goble Nov 2015

8000 Years Of Environmental Evolution Of Barrier–Lagoon Systems Emplaced In Coastal Embayments (Nw Iberia), Rita González-Villanueva, Marta Pérez-Arlucea, Susana Costas, Roberto Bao, Xose L. Otero, Ronald J. Goble

Department of Earth and Atmospheric Sciences: Faculty Publications

The rocky and indented coast of NW Iberia is characterized by the presence of highly valuable and vulnerable, small and shallow barrier– lagoon systems structurally controlled. The case study was selected to analyse barrier–lagoon evolution based on detailed sedimentary architecture, chronology, geochemical and biological proxies. The main objective is to test the hypothesis of structural control and the significance at regional scale of any highenergy event recorded. This work is also aimed at identifying general patterns and conceptualizing the formation and evolution of this type of coastal systems. The results allowed us to establish a conceptual model of Holocene evolution …


U.S. Drought Monitor, October 27, 2015, Brad Rippey Oct 2015

U.S. Drought Monitor, October 27, 2015, Brad Rippey

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for October 27, 2015 (10/27/15) 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.


Characteristics Of Sediment Transport At Selected Sites Along The Missouri River, 2011–12, David L. Rus, Joel M. Galloway, Jason S. Alexander Oct 2015

Characteristics Of Sediment Transport At Selected Sites Along The Missouri River, 2011–12, David L. Rus, Joel M. Galloway, Jason S. Alexander

United States Geological Survey: Water Reports and Publications

Extreme flooding in the Missouri River in 2011, followed by a year of more typical streamflows in 2012, allowed the sediment-transport regime to be compared between the unprecedented conditions of 2011 and the year immediately following the flooding. As part of a cooperative effort between the United States Geological Survey (USGS) and the United States Army Corps of Engineers, this report follows up USGS Scientific Investigations Report 2013–5006 by comparing sediment transport between years and among sampling sites spanning the Garrison Segment in North Dakota, the Gavins Point Segment downstream from Lewis and Clark Lake, and a part of the …


U.S. Drought Monitor, October 20, 2015, Brad Rippey Oct 2015

U.S. Drought Monitor, October 20, 2015, Brad Rippey

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for October 20, 2015 (10/20/15) 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.


Microgravity Methods- The National Corvette Museum, Bowling Green, Ky, Ric Fredrico, Brian Ham Oct 2015

Microgravity Methods- The National Corvette Museum, Bowling Green, Ky, Ric Fredrico, Brian Ham

National Cave and Karst Management Symposia

No abstract provided.


Analyzing Possible Influences In Karst Regions Contributing To Harmful Algal Bloom Occurrences In Freshwater Lakes, Robert Schaefer, Jason Polk, Keegan Mcclanahan Oct 2015

Analyzing Possible Influences In Karst Regions Contributing To Harmful Algal Bloom Occurrences In Freshwater Lakes, Robert Schaefer, Jason Polk, Keegan Mcclanahan

National Cave and Karst Management Symposia

No abstract provided.


Origin Of Jewel Cave And How It Supports Cave Management Decisions, Mike Wiles Oct 2015

Origin Of Jewel Cave And How It Supports Cave Management Decisions, Mike Wiles

National Cave and Karst Management Symposia

No abstract provided.


Contaminant Mapping And Refugia: Hidden River Cave, Kentucky, Chris Smart, Caren Raedts Oct 2015

Contaminant Mapping And Refugia: Hidden River Cave, Kentucky, Chris Smart, Caren Raedts

National Cave and Karst Management Symposia

No abstract provided.


An Investigation Of Groundwater Flow In The Vicinity Of Patoka Dam, Indiana: Assessment Research To Support United States Army Corps Of Engineers Dam Safety Risk, Lee Anne Bledsoe, Chris Groves, Kenneth Henn, Jackie Row Oct 2015

An Investigation Of Groundwater Flow In The Vicinity Of Patoka Dam, Indiana: Assessment Research To Support United States Army Corps Of Engineers Dam Safety Risk, Lee Anne Bledsoe, Chris Groves, Kenneth Henn, Jackie Row

National Cave and Karst Management Symposia

No abstract provided.


An Analysis Of The Lost River Karst Aquifer’S Hydrometeorological Response To Storm Events For Flooding And Water Quality Management, Logan Mitchell, Jason Polk, Kegan Mcclanahan Oct 2015

An Analysis Of The Lost River Karst Aquifer’S Hydrometeorological Response To Storm Events For Flooding And Water Quality Management, Logan Mitchell, Jason Polk, Kegan Mcclanahan

National Cave and Karst Management Symposia

No abstract provided.


An Analysis Of The Lost River Karst Aquifer’S Hydrometeorological Response To Storm Events For Flooding And Water Quality Management, Logan Mitchell, Jason Polk, Kegan Mcclanahan Oct 2015

An Analysis Of The Lost River Karst Aquifer’S Hydrometeorological Response To Storm Events For Flooding And Water Quality Management, Logan Mitchell, Jason Polk, Kegan Mcclanahan

National Cave and Karst Management Symposia

No abstract provided.


Discovery And Management Of Georgia Caves, Lasha Asanidze, Kukuri Tsikarishvili, Zaza Lezhava, Nana Bolashvili, Nino Chikhradze Oct 2015

Discovery And Management Of Georgia Caves, Lasha Asanidze, Kukuri Tsikarishvili, Zaza Lezhava, Nana Bolashvili, Nino Chikhradze

National Cave and Karst Management Symposia

No abstract provided.


Quantitative Dye Studies To Evaluate The Spill Response System For Mammoth Cave National Park, Jetara Brown, Rickard Toomey, Rick Olson, D. Solomon, Lonnie Sharp Oct 2015

Quantitative Dye Studies To Evaluate The Spill Response System For Mammoth Cave National Park, Jetara Brown, Rickard Toomey, Rick Olson, D. Solomon, Lonnie Sharp

National Cave and Karst Management Symposia

No abstract provided.


Potential Application Of Hugelkultur To Increase Water Holding Capacity Of Karst Rocky Desertified Land, Megan Laffoon, Albert Meier, Chris Groves Oct 2015

Potential Application Of Hugelkultur To Increase Water Holding Capacity Of Karst Rocky Desertified Land, Megan Laffoon, Albert Meier, Chris Groves

National Cave and Karst Management Symposia

No abstract provided.


Isotopic Evolution And Epikarst Mixing In A Telogenetic Karst System: Implications For Contaminant Transport And Groundwater Movement, Keegan Mcclanahan, Jason Polk, Benjamin Miller, Robert Schaefer, Carl Bolster Oct 2015

Isotopic Evolution And Epikarst Mixing In A Telogenetic Karst System: Implications For Contaminant Transport And Groundwater Movement, Keegan Mcclanahan, Jason Polk, Benjamin Miller, Robert Schaefer, Carl Bolster

National Cave and Karst Management Symposia

No abstract provided.


Dripwater Chemistry And Land-Use Study At Diamond Caverns, Hart County, Ky: Science And Student Engagement At A Show Cave, Ethan Morgan, Andrew Wulff, Pat Kambesis, Chris Groves Oct 2015

Dripwater Chemistry And Land-Use Study At Diamond Caverns, Hart County, Ky: Science And Student Engagement At A Show Cave, Ethan Morgan, Andrew Wulff, Pat Kambesis, Chris Groves

National Cave and Karst Management Symposia

No abstract provided.


Building Resilience Against Karst Hazards: A Case Study Of The National Corvette Museum Sinkhole, Jason Polk, Ric Fredrico, Brian Ham, Daniel Nedvidek, Kegan Mcclanahan, Leslie A. North, Pat Kambesis, Mike Marasa Oct 2015

Building Resilience Against Karst Hazards: A Case Study Of The National Corvette Museum Sinkhole, Jason Polk, Ric Fredrico, Brian Ham, Daniel Nedvidek, Kegan Mcclanahan, Leslie A. North, Pat Kambesis, Mike Marasa

National Cave and Karst Management Symposia

No abstract provided.


Improving Stormwater Treatment Efficiency Based On Runoff Properties At Mammoth Cave National Park, Hung-Wai Ho, Rickard Toomey Oct 2015

Improving Stormwater Treatment Efficiency Based On Runoff Properties At Mammoth Cave National Park, Hung-Wai Ho, Rickard Toomey

National Cave and Karst Management Symposia

No abstract provided.


Evaluation Of First Order Error Induced By Conservative-Tracer Temperature Approximation For Mixing In Karstic Flow, Philippe Machetel, David A. Yuen Oct 2015

Evaluation Of First Order Error Induced By Conservative-Tracer Temperature Approximation For Mixing In Karstic Flow, Philippe Machetel, David A. Yuen

Sinkhole Conference 2015

Fluid dynamics in karst systems is complex due to the heterogeneity of hydraulic networks that combine the Porous Fractured Matrix (PFM) and the interconnected drains (CS). These complex dynamic systems often need to be treated as “black boxes” in which only input and output properties are known. In this work, we propose to assess the first-order error induced by considering the temperature as a conservative tracer for flows mixing in karst (fluvio-karst). The fluvio-karstic system is treated as an open thermodynamic system (OTS), which exchanges water and heat with its surrounding. We propose to use a cylindrical PFM drained by …


Numerical Simulation Of Spring Hydrograph Recession Curves For East Yorkshire Chalk Aquifer, Uk, Nozad Hasan Azeez, Landis Jared West, Simon H. Bottrell Oct 2015

Numerical Simulation Of Spring Hydrograph Recession Curves For East Yorkshire Chalk Aquifer, Uk, Nozad Hasan Azeez, Landis Jared West, Simon H. Bottrell

Sinkhole Conference 2015

The Cretaceous Chalk aquifer is the most important in the UK for the provision of water to public supply and agriculture. The Chalk has both matrix and fracture porosity and is thus best considered as a dual porosity aquifer system. Although the matrix porosity is large, typically around 0.35 in the study area of East Yorkshire, UK (ESI, 2010), pore diameters are typically very small, and the water contained in them is virtually immobile. The high permeability fracture network is responsible for the ability of water to drain; spatial variations in fracture network properties mean conventional approaches to aquifer characterization …


Accounting For Anomalous Hydraulic Responses During Constant-Rate Pumping Tests In The Prairie Du Chien-Jordan Aquifer System – Towards A More Accurate Assessment Of Leakage, Justin Blum Oct 2015

Accounting For Anomalous Hydraulic Responses During Constant-Rate Pumping Tests In The Prairie Du Chien-Jordan Aquifer System – Towards A More Accurate Assessment Of Leakage, Justin Blum

Sinkhole Conference 2015

The Prairie du Chien-Jordan Aquifer system is an important source of drinking water for residents of southeastern Minnesota. Assessment of the hydraulic properties of this aquifer continues to be of interest for wellhead protection and resource evaluation efforts. When performing constant-rate pumping tests on wells constructed in the karsted Prairie du Chien Aquifer, anomalous hydraulic responses resulting from cavernous flow are frequently observed. Hydraulic response in the adjacent Jordan Sandstone Aquifer is also commonly distorted because of bedding-plane fractures and well development techniques such as blasting and bailing. Resolution of these anomalous responses is important for accurate estimates of leakage …


Hydrochemical Characteristics And Formation Mechanism Of Groundwater In The Liulin Karst System, Min Yang, Feng'e Zhang, Sheng Zhang, Miying Yin, Guoqing Wu Oct 2015

Hydrochemical Characteristics And Formation Mechanism Of Groundwater In The Liulin Karst System, Min Yang, Feng'e Zhang, Sheng Zhang, Miying Yin, Guoqing Wu

Sinkhole Conference 2015

The Liulin karst system is typical of hydrogeological systems in northwestern China, with a group of springs as the dominant mechanism for regional groundwater discharge. To reveal the hydrochemical formation mechanism of the Liulin karst groundwater system, we studied the hydrogeochemical processes of karst groundwater in aquifers at the base of the hydrogeological investigation. Then starting from the chemical composition of karst groundwater together with the recharge-runoff - discharge process of groundwater systems, we analyzed the solutes origin and the dissolved mineral facies of the groundwater chemical composition. The results showed that the anionic and cationic compositions of karst water …


Dye Tracing Through The Vadose Zone Above Wind Cave, Custer County, South Dakota, James Nepstad Oct 2015

Dye Tracing Through The Vadose Zone Above Wind Cave, Custer County, South Dakota, James Nepstad

Sinkhole Conference 2015

During the 1990s, in an attempt to better understand threats posed by surface developments overlying the cave, National Park Service staff at Wind Cave National Park in Custer County, South Dakota carried out a series of dye traces through portions of the vadose zone overlying the cave. Wind Cave is located within the 100m-thick Madison formation (limestone and dolomite), which in most locations is capped by varying thicknesses of the basal units of the Minnelusa formation (intermingled beds of sandstone, limestone, and shale). A variety of cave locations with dripping or pooled water were monitored for up to five years …