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Articles 271 - 300 of 543
Full-Text Articles in Other Earth Sciences
Geogram 2014, David J. Keeling Editor, Wku Department Of Geography And Geology
Geogram 2014, David J. Keeling Editor, Wku Department Of Geography And Geology
Earth, Environmental, and Atmospheric Sciences Publications
No abstract provided.
Droughtscape, Fall 2014, Kelly Smith
Droughtscape, Fall 2014, Kelly Smith
DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)
Contents
Director’s report
Upcoming events
Drought and climate summary
Drought impacts
Drought planning in Brazil
Ethiopian workshop
Visiting scholar
Help for South Plains ranchers
Wind River tribal workshop
Inter Tribal Buffalo Council
South Dakota ranch workshops
Crop Advisors As Climate Information Brokers: Building The Capacity Of Us Farmers To Adapt To Climate Change, Maria Carmen Lemos, Yun-Jia Lo, Christine Kirchhoff, Tonya Haigh
Crop Advisors As Climate Information Brokers: Building The Capacity Of Us Farmers To Adapt To Climate Change, Maria Carmen Lemos, Yun-Jia Lo, Christine Kirchhoff, Tonya Haigh
National Drought Mitigation Center: Faculty Publications
This paper examines the role of crop advisors as brokers of climate information to support US corn farmers to adapt to climatic change. It uses quantitative data collected from a broad survey of crop advisors in the US Corn Belt to examine the factors that shape advisors’ use of (and willingness to provide) climate information to their clients. Building upon a general model of climate information usability we argue that advisors’ willingness to provide climate advice to farmers is influenced by three main factors: their information seeking habits and behavior, their experience with innovation in the past, and how climate …
Time, Money, And Melting Ice: Proposal For A Coopertive Study Of The World’S Cave Ice In A Race Against Climate Change, George Veni, Lewis Land, Aurel Perşoiu
Time, Money, And Melting Ice: Proposal For A Coopertive Study Of The World’S Cave Ice In A Race Against Climate Change, George Veni, Lewis Land, Aurel Perşoiu
The International Workshop on Ice Caves
Climate change is a global phenomenon that is melting and threatening to melt ice deposits in many of the world’s ice caves. The National Cave and Karst Research Institute of the USA is concerned that major and important paleoclimate and paleoenvironmental records stored in cave ice will soon be lost, and is proposing an international collaborative effort to overcome funding and logistical challenges to sample and analyze at least a representative collection of ice from several regions before further melting occurs.
New Research In Cave Ledenica In Bukovi Vrh On Velebit Mt In Croatian Dinaric Karst, Mladen Garasic
New Research In Cave Ledenica In Bukovi Vrh On Velebit Mt In Croatian Dinaric Karst, Mladen Garasic
The International Workshop on Ice Caves
No abstract provided.
Using Temporal Changes In Drought Indices To Generate Probabilistic Drought Intensification Forecasts, Jason A. Otkin, Martha C. Anderson, Christopher Hain, Mark Svoboda
Using Temporal Changes In Drought Indices To Generate Probabilistic Drought Intensification Forecasts, Jason A. Otkin, Martha C. Anderson, Christopher Hain, Mark Svoboda
National Drought Mitigation Center: Faculty Publications
In this study, the potential utility of using rapid temporal changes in drought indices to provide early warning of an elevated risk for drought development over subseasonal time scales is assessed. Standardized change anomalies were computed each week during the 2000–13 growing seasons for drought indices depicting anomalies in evapotranspiration, precipitation, and soil moisture. A rapid change index (RCI) that encapsulates the accumulated magnitude of rapid changes in the weekly anomalies was computed each week for each drought index, and then a simple statistical method was used to convert the RCI values into drought intensification probabilities depicting the likelihood that …
Droughtscape, Summer 2014, Kelly Smith
Droughtscape, Summer 2014, Kelly Smith
DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)
Contents
Director’s report
Outlook
Drought & climate summary
Drought impacts
International drought monitoring and planning
Visiting scholars
North American Drought Monitor Forum
New primary Dust Bowl source
New additions to online webinar archive
Community Capitals Framework Institute
Water-Use Restriction Information: Information Sharing Between Public Water Systems And State Government Offices, Christopher Carparelli
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 …
Droughtscape, Spring 2014, Kelly Smith
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
Interpreting The Paleozoogeography And Sea Level History Of Thermally Anomalous Marine Terrace Faunas: A Case Study From The Last Interglacial Complex Of San Clemente Island, California, Daniel R. Muhs, Lindsey T. Groves, R. Randall Schumann
Interpreting The Paleozoogeography And Sea Level History Of Thermally Anomalous Marine Terrace Faunas: A Case Study From The Last Interglacial Complex Of San Clemente Island, California, Daniel R. Muhs, Lindsey T. Groves, R. Randall Schumann
United States Geological Survey: Publications
Marine invertebrate faunas with mixtures of extralimital southern and extralimital northern faunal elements, called thermally anomalous faunas, have been recognized for more than a century in the Quaternary marine terrace record of the Pacific Coast of North America. Although many mechanisms have been proposed to explain this phenomenon, no single explanation seems to be applicable to all localities where thermally anomalous faunas have been observed. Here, we describe one such thermally anomalous fossil fauna that was studied on the second emergent marine terrace at Eel Point on San Clemente Island. The Eel Point terrace complex is a composite feature, consisting …
Identifying Sources Of Aeolian Mineral Dust: Present And Past, Daniel R. Muhs, Joseph M. Prospero, Matthew C. Baddock, Thomas E. Gill
Identifying Sources Of Aeolian Mineral Dust: Present And Past, Daniel R. Muhs, Joseph M. Prospero, Matthew C. Baddock, Thomas E. Gill
United States Geological Survey: Publications
Aeolian mineral dust is an important component of the Earth’s environmental systems, playing roles in the planetary radiation balance, as a source of fertilizer for biota in both terrestrial and marine realms and as an archive for understanding atmospheric circulation and paleoclimate in the geologic past. Crucial to understanding all of these roles of dust is the identification of dust sources. Here we review the methods used to identify dust sources active at present and in the past. Contemporary dust sources, produced by both glaciogenic and non-glaciogenic processes, can be readily identified by the use of Earth-orbiting satellites. These data …
Droughtscape, Winter 2014, Kelly Smith
Droughtscape, Winter 2014, Kelly Smith
DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)
Contents
Director’s report
Outlook & quarterly review . 2
Drought in 2013 review.
Quarterly impacts review . 5
Impacts in 2013 review.
Belmont Forum research0
USDM change maps 11
Central Asia drought planning
Kansas RC&D planning
Publication compares plans
Drought for planners webinar
Soil moisture networks
Kansas farm and ranch planning
$500 to develop leadership
Kids seek solutions
Plains symposium April 1-4
Examining The Relationship Between Drought Development And Rapid Changes In The Evaporative Stress Index, Jason A. Otkin, Martha C. Anderson, Christopher Hain, Mark D. Svoboda
Examining The Relationship Between Drought Development And Rapid Changes In The Evaporative Stress Index, Jason A. Otkin, Martha C. Anderson, Christopher Hain, Mark D. Svoboda
National Drought Mitigation Center: Faculty Publications
In this study, the ability of a new drought metric based on thermal infrared remote sensing imagery to provide early warning of an elevated risk for drought intensification is assessed. This new metric, called the rapid change index (RCI), is designed to highlight areas undergoing rapid changes in moisture stress as inferred from weekly changes in the evaporative stress index (ESI) generated using the Atmosphere–Land Exchange Inverse (ALEXI) surface energy balance model. Two case study analyses across the central United States revealed that the initial appearance of negative RCI values indicative of rapid increases in moisture stress preceded the introduction …
Geogram 2013, David J. Keeling Editor, Wku Department Of Geography And Geology
Geogram 2013, David J. Keeling Editor, Wku Department Of Geography And Geology
Earth, Environmental, and Atmospheric Sciences Publications
No abstract provided.
Droughtscape, Fall 2013, National Drought Mitigation Center
Droughtscape, Fall 2013, National Drought Mitigation Center
DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)
Contents
Director’s report
Kansas community drought planning workshop November 5
Drought impacts webinars
Drought outlook and summary
Late summer drought brings more agricultural impacts
Plans help ranchers weather drought
NDMC contributions to U2U project
Drought Management Database archives strategies
QuickDRI will help spot flash droughts
NDMC Co-Hosts NASA workshop
Wilhite leads Integrated Drought Management Program work
Speaking of drought
Managing #Drought tweet chat transcript
Updated USDM website
The Use Of The Ostracode Cyprideis Americana (Sharpe) As A Proxy For Salinity In Bahamian Lake Systems, Rachel E. Bowles
The Use Of The Ostracode Cyprideis Americana (Sharpe) As A Proxy For Salinity In Bahamian Lake Systems, Rachel E. Bowles
Masters Theses & Specialist Projects
Ostracodes, bi-valved crustaceans, are potentially excellent proxies for salinity.They are abundant, react to changes in salinity, and secrete low-magnesium calcite shells that preserve information about their host water chemistry. Changes in valve trace element concentration, stable isotope composition, and sieve pore shape values have been linked to changes in salinity. This study analyzed the response of the euryhaline ostracode, Cyprideis americana, to salinity in six lakes from two Bahamian islands across two seasons. The purpose of this work was to determine which compositional and morphological variables in C. americana are the most useful for paleosalinity reconstructions.Ostracode and water samples were …
Droughtscape, Summer 2013, National Drought Mitigation Center
Droughtscape, Summer 2013, National Drought Mitigation Center
DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)
Contents
Director’s report
July 25 webinar: Drought management database, NIDIS update
Republican River Basin workshops July 31, August 1
Summer climate outlook, spring summary
Spring impacts: wildfire, water, agriculture and business
Data help managers assess Nebraska groundwater declines after drought of 2012
Tadesse helps Mexico with Veg-DRI concept
Visiting scholar explores remote sensing of drought in forests
U.S. Drought Monitor Forum photo recap, details online
Workshop helps New Mexico ranchers cope with drought
Alabama’s new drought plan
National Drought Forum report
Drought Impacts Community of Practice report
Toward Global Drought Early Warning Capability: Expanding International Cooperation For The Development Of A Framework For Monitoring And Forecasting, Will Pozzi, Justin Sheffield, Robert Stefanski, Douglas Cripe, Roger Pulwarty, Jürgen V. Vogt, Richard R. Heim Jr., Michael J. Brewer, Mark Svoboda, Rogier Westerhoff, Albert I. J. M. Van Dijk, Benjamin Lloyd-Hughes, Florian Pappenberger, Micha Werner, Emanuel Dutra, Fredrik Wetterhall, Wolfgang Wagner, Siegfried Schubert, Kingtse Mo, Margaret Nicholson, Lynette Bettio, Liliana Nunez, Rens Van Beek, Marc Bierkens, Luis Gustavo Goncalves De Goncalves, João Gerd Zell De Mattos, Richard Lawford
Toward Global Drought Early Warning Capability: Expanding International Cooperation For The Development Of A Framework For Monitoring And Forecasting, Will Pozzi, Justin Sheffield, Robert Stefanski, Douglas Cripe, Roger Pulwarty, Jürgen V. Vogt, Richard R. Heim Jr., Michael J. Brewer, Mark Svoboda, Rogier Westerhoff, Albert I. J. M. Van Dijk, Benjamin Lloyd-Hughes, Florian Pappenberger, Micha Werner, Emanuel Dutra, Fredrik Wetterhall, Wolfgang Wagner, Siegfried Schubert, Kingtse Mo, Margaret Nicholson, Lynette Bettio, Liliana Nunez, Rens Van Beek, Marc Bierkens, Luis Gustavo Goncalves De Goncalves, João Gerd Zell De Mattos, Richard Lawford
National Drought Mitigation Center: Faculty Publications
The need for a global drought early warning framework. Drought has had a significant impact on civilization throughout history in terms of reductions in agricultural productivity, potable water supply, and economic activity, and in extreme cases this has led to famine. Every continent has semiarid areas, which are especially vulnerable to drought. The Intergovernmental Panel on Climate Change has noted that average annual river runoff and water availability are projected to decrease by 10%–13% over some dry and semiarid regions in mid and low latitudes, increasing the frequency, intensity, and duration of drought, along with its associated impacts. The sheer …
The Missing Piece: Drought Impacts Monitoring Report From A Workshop In Tucson, Az March 5-6, 2013, Kirsten Lackstrom, Amanda Brennan, Daniel Ferguson, Mike Crimmins, Lisa Darby, Kirstin Dow, Keith Ingram, Alison Meadow, Henry Reges, Mark Shafer, Kelly Helm Smith
The Missing Piece: Drought Impacts Monitoring Report From A Workshop In Tucson, Az March 5-6, 2013, Kirsten Lackstrom, Amanda Brennan, Daniel Ferguson, Mike Crimmins, Lisa Darby, Kirstin Dow, Keith Ingram, Alison Meadow, Henry Reges, Mark Shafer, Kelly Helm Smith
National Drought Mitigation Center: Faculty Publications
Based on a shared interest to better understand the impacts of drought and the potential utility of using drought impacts reporting as a tool for monitoring conditions, researchers from the Carolinas RISA (Dow, Lackstrom, and Brennan), the Climate Assessment for the Southwest (Crimmins and Ferguson), and the Southwest Climate Science Center (Meadow) decided to convene a workshop in Tucson in March 2013. The primary goal was to assemble a small group of university and agency scientists involved with drought impacts monitoring to discuss opportunities and barriers associated with drought impacts reporting, recommend best practices for implementing a drought impacts reporting …
Examining Rapid Onset Drought Development Using The Thermal Infrared–Based Evaporative Stress Index, Jason A. Otkin, Martha C. Anderson, Christopher Hain, Iliana E. Mladenova, Jeffrey B. Basara, Mark Svoboda
Examining Rapid Onset Drought Development Using The Thermal Infrared–Based Evaporative Stress Index, Jason A. Otkin, Martha C. Anderson, Christopher Hain, Iliana E. Mladenova, Jeffrey B. Basara, Mark Svoboda
National Drought Mitigation Center: Faculty Publications
Reliable indicators of rapid drought onset can help to improve the effectiveness of drought early warning systems. In this study, the evaporative stress index (ESI), which uses remotely sensed thermal infrared imagery to estimate evapotranspiration (ET), is compared to drought classifications in the U.S. Drought Monitor (USDM) and standard precipitation-based drought indicators for several cases of rapid drought development that have occurred across the United States in recent years. Analysis of meteorological time series from the North American Regional Reanalysis indicates that these events are typically characterized by warm air temperature and low cloud cover anomalies, often with high winds …
Droughtscape, Spring 2013, National Drought Mitigation Center
Droughtscape, Spring 2013, National Drought Mitigation Center
DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)
Contents
Director’s report
First quarter climate summary and outlook
Impacts: Crop indemnities set records in 2012; water conflicts escalating
International meeting recommends countries have drought policies
NDMC plays key role in international drought policy meeting
EDEN and VOAD guide helps build community drought capacity
Svoboda, other experts and policymakers focus on food and water security
New Mexico ranching workshop set for May 29 in Socorro
Ranch planning updates: archived webinars, new publications
Tune in to the US Drought Monitor Forum, April 16-18
Archived webinar looks at using drought simulations in planning
CoCoRaHS WxTalk on drought
Sump Diving “River Caves”, Mark Wenner
Sump Diving “River Caves”, Mark Wenner
Mammoth Cave Research Symposia
Note: “Sump” is a term used in caving to describe a passage in a cave that is submerged under water.
Sump diving, and “lure of the sump” originated in the UK in the early 1920’s, as did the use of “rebreather’s, and the “self-contained underwater breathing apparatus”, S.C.U.B.A. The techniques developed by cavers, and “sump divers” in Europe, and then used in British cave systems like Wookey Hole set a cave diving precedence; the development of a unique style, and system for diving caves. These diving practices and techniques influenced the exploration of resurgences, springs, siphons, and river caves throughout …
Multiple Storm Event Impacts On Epikarst Storage And Transport Of Organic Soil Amendments In South-Central Kentucky, Jason Polk, Sean Vanderhoff, Chris Groves, Benjamin Miller, Carl Bolster
Multiple Storm Event Impacts On Epikarst Storage And Transport Of Organic Soil Amendments In South-Central Kentucky, Jason Polk, Sean Vanderhoff, Chris Groves, Benjamin Miller, Carl Bolster
Mammoth Cave Research Symposia
The groundwater in agricultural karst areas, such as Kentucky’s Pennyroyal Plateau, is susceptible to contamination from organic soil amendments and pesticides. During 2011, water samples and geochemical data were collected every four hours before, during, and between storm events from a waterfall in Crumps Cave from January to September to track the transport and residence time of epikarst water and organic soil amendments during variable fl ow conditions. Geochemical data consisting of pH, specific conductivity, temperature, and discharge were collected continuously at 10-minute intervals, along with rainfall amounts. The changes in geochemistry indicate simultaneous storage and transport of meteoric water …
Sable Melodists, Janet Bass Smith
Sable Melodists, Janet Bass Smith
Mammoth Cave Research Symposia
Inside Mammoth Cave on Broadway Avenue, between the last TB hut and Star Chamber, the name Sable Melodists is inscribed on the wall, using what appears to be charcoal. Next to Sable Melodists are the names of two men: R. H. Condon, and J. M. Foans. (See Figures 1, 2, and 3) When the name Sable Melodists was researched several years ago, the only information available was that it was a minstrel group. A recent search revealed more information, and provoked a more complete investigation of minstrel groups and minstrel shows, and their evolution.
Pre-Service Teachers Learn About Karst Geology At Mammoth Cave National Park, Jeanine Huss, Cheryl Messenger
Pre-Service Teachers Learn About Karst Geology At Mammoth Cave National Park, Jeanine Huss, Cheryl Messenger
Mammoth Cave Research Symposia
All Preservice elementary science methods students at Western Kentucky University participate in a one-day or two-day experience at Mammoth Cave National Park. This trip has occurred over the past seven semesters. Through this experience, students gain knowledge about their local unique karst environment.
Using Interactive Simulation To Extend Access To Learning Along The Historic Tour Route Of Mammoth Cave National Park, Christopher L. Atchison, Don Stredney, Karen E. Irving, Rick Toomey, Alan Price, Thomas Kerwin, Bradley Hittle, Phillip J. Reed
Using Interactive Simulation To Extend Access To Learning Along The Historic Tour Route Of Mammoth Cave National Park, Christopher L. Atchison, Don Stredney, Karen E. Irving, Rick Toomey, Alan Price, Thomas Kerwin, Bradley Hittle, Phillip J. Reed
Mammoth Cave Research Symposia
This poster presentation displays work of a current project to address the problem of limited inclusion to field-based learning experiences for students with physical disabilities. Led by researchers at Georgia State University, Ohio State University and Mammoth Cave International Center for Science and Learning, the overall objective of the project is through integration of emerging simulation technologies and techniques, to provide a rich virtual environment of a geological field site for students with mobility impairments. Through the development of a synthetic field-based module that employs a virtual environment that interchangeably uses two and three-dimensional representation for presenting an alternative to …
Mammoth Cave National Park Backcountry Trail And Stream Monitoring, 2009-2012, Larry Johnson, Student Conservation Association Conservation
Mammoth Cave National Park Backcountry Trail And Stream Monitoring, 2009-2012, Larry Johnson, Student Conservation Association Conservation
Mammoth Cave Research Symposia
This project conducted an assessment of backcountry trail conditions on the north side of the Green River in Mammoth Cave National Park during summers of 2009-2012. The project included assessing physical parameters of trails, (width, depth, etc.) and conducting an assessment of water quality of streams in proximity of backcountry trails. The project was conducted by Student Conservation Association resource assistants (12 weeks each) supervised by a natural resource specialist from the Mammoth Cave Division of Science and Resources Management. Trail assessment procedures were based on techniques developed by Jeff ery L. Marion, Ph.D, USGS, Virginia Tech (et al.) and …
Improvements To The Rv Waste-Transfer Station Design To Reduce Contaminated Storm Runoff, David Solomon, Sean Mcmillian, Ashley West, Lonnie Sharpe
Improvements To The Rv Waste-Transfer Station Design To Reduce Contaminated Storm Runoff, David Solomon, Sean Mcmillian, Ashley West, Lonnie Sharpe
Mammoth Cave Research Symposia
Mammoth Cave in Central Kentucky is the world’s longest cave system and has been designated an international biosphere. It has unique organisms that live in the cave system and they are dependant upon high quality water supplied through rain recharge. We have documented quaternary ammonia compounds (QAC) levels ranging from 0.2 to 22 mg/L in storm fl ow, as well as, other chemicals coming from the RV waste-transfer station. The objective of this project was to re-design the drain system around the dump station to prevent spillage from washing down into the cave. The first design feature is a v-trench …
Use Of Sorption Isotherms To Improve The Efficacy Of The Storm-Water Filters, Hung-Wai Ho, Rick Toomey
Use Of Sorption Isotherms To Improve The Efficacy Of The Storm-Water Filters, Hung-Wai Ho, Rick Toomey
Mammoth Cave Research Symposia
Sorption has been widely used as an inexpensive and environmental friendly water treatment technology. A large variety of adsorbents with different adsorption mechanisms have drawn interests, and combinations of adsorbents will enhance sorption of mixed solutions. However, current sorption research tends to focus on single material. The objective of this study was to develop sorption isotherms for ZPG®, (Zeolite, Perlite, Granular Activated Carbon), used in a stormwater filter cartridge. Contaminants of concern include Cu2+ and quaternary ammonia compounds (QAC). Adsorption isotherms were established for Cu2+ and QAC, and the best fit for the isotherm data was a Langmuir isotherm for …
Water Quality Monitoring At Mammoth Cave National Park, Brenda Wells, Joe Meiman
Water Quality Monitoring At Mammoth Cave National Park, Brenda Wells, Joe Meiman
Mammoth Cave Research Symposia
Since the main objective of the monitoring program for Cumberland Piedmont Network (CUPN) is to detect, and understand changes in major ecosystem resources, the poster information will show results of what has occurred with water quality in the park since 2004. The data cover 13 sites, sampled once a month for 2 years on and 5 years off . The main parameters monitored for MACA include: air and water temperature, pH, fl ow, dissolved oxygen, specific conductivity, E. Coli, nitrates and turbidity. The data are compiled and analyzed at the end of every sampling cycle ultimately for addressing park management …