Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

University of South Florida

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 1 - 30 of 163398

Full-Text Articles in Entire DC Network

Enhancing Teachers’ Intercultural Literacy: Examining The Impact Of A Fulbright-Hays Group Projects Abroad Program To Indonesia, Paul R. Wallace Dec 2026

Enhancing Teachers’ Intercultural Literacy: Examining The Impact Of A Fulbright-Hays Group Projects Abroad Program To Indonesia, Paul R. Wallace

Journal of Global Education and Research

The Fulbright-Hays Group Projects Abroad (GPA) Program offers institutional grants to support overseas experiences and curriculum development for educators. The study reported here focused on changes in the intercultural literacy of participants involved in a 4-week Fulbright-Hays GPA Program to Indonesia. Participants in this study included K-12 teachers from public schools and teacher education majors. Before and after traveling to Indonesia, eight participants completed a self-assessment of intercultural literacy, which measured competencies, understandings, attitudes, language proficiencies, participation, and identities deemed necessary for successful living and working in a cross-cultural environment. This article presents the results of the assessment survey, along …

Go to article

Changing Expectations In Higher Education Post-Pandemic, Gregory R. Mackinnon, Tyler Maclean, Mohamad El Maouch, William Yuan, Zhao Kaibin, Bi Dandan, Marwa Saab Dec 2026

Changing Expectations In Higher Education Post-Pandemic, Gregory R. Mackinnon, Tyler Maclean, Mohamad El Maouch, William Yuan, Zhao Kaibin, Bi Dandan, Marwa Saab

Journal of Global Education and Research

A sample of higher education students in Canada and China was surveyed and interviewed to ascertain any changes in their educational expectations given their experiences with emergency remote teaching during the pandemic. In addition, the instructors of these students were interviewed to corroborate student feedback. The research suggested that students in Canada and China expressed expectations of increased flexibility and improved pedagogy. Whereas Canadian students were overtly demanding of the instructor and the educational system, Chinese students were comparatively subtle in their expectation that the post-pandemic level of support be maintained. The primary concern of the Chinese cohort was a …

Go to article

Advancing Blended Education: Caribbean Lecturers’ Reflective Narratives Of Caution, Creativity, And Change, Mia A. Jules, Donna-Maria B. Maynard, Grace A. Fayombo, Jason E. Marshall, Tanya Newton, Kamilah Hutson, Amanda Kellman, Cherise Bynoe, Mikaila Collymore, Jo-Ann Prosper-Chase, Laura Lee Foster, Adicia Clarke Dec 2026

Advancing Blended Education: Caribbean Lecturers’ Reflective Narratives Of Caution, Creativity, And Change, Mia A. Jules, Donna-Maria B. Maynard, Grace A. Fayombo, Jason E. Marshall, Tanya Newton, Kamilah Hutson, Amanda Kellman, Cherise Bynoe, Mikaila Collymore, Jo-Ann Prosper-Chase, Laura Lee Foster, Adicia Clarke

Journal of Global Education and Research

Blended teaching requires lecturers to constantly self-reflect on their pedagogical practice to enhance student learning. However, there is yet to be a significant corpus of literature that highlights the cognitive resources that lecturers in higher education should possess to effectively use blended learning strategies. It is important to understand the intellectual resources required for blended pedagogy so that such capabilities can be fostered during faculty-training programs; ultimately resulting in innovative strategies to ensure quality learning outcomes and the advancement of university-level blended teaching mandates. This qualitative case study explored how twelve Caribbean lecturers experienced and navigated the teaching process in …

Go to article

From "Ice Cave" To "Iced Cave": A Semantic And Process-Based Refinement For Rock-Hosted Caves Containing Perennial Ice, Jan Barabach Nov 2026

From "Ice Cave" To "Iced Cave": A Semantic And Process-Based Refinement For Rock-Hosted Caves Containing Perennial Ice, Jan Barabach

International Journal of Speleology

The term "ice cave" is deeply entrenched in speleological literature, but it fails to distinguish between two distinct phenomena: voids carved entirely within glacier ice and bedrock cavities hosting secondary perennial ice. This paper highlights the century-long conceptual ambiguity surrounding this nomenclature and proposes a process-oriented taxonomic reform. Based on grammatical, climatic, and cross-linguistic rationales, this paper advocates adopting the participial modifier "iced cave" as a precise alternative to the noun-noun construct "ice cave" for rock-hosted environments. This shift accurately frames subterranean ice as a dynamic secondary infill rather than a structural matrix, aligning English terminology with established practices in …

Go to article

Hidden Thermal Signatures Reveal The Microclimatic Influence Of Scheduled Cave Tourism, Matt Rowberry, John Gunn, Andrew Smith Oct 2026

Hidden Thermal Signatures Reveal The Microclimatic Influence Of Scheduled Cave Tourism, Matt Rowberry, John Gunn, Andrew Smith

International Journal of Speleology

Tourist activity is widely recognised as a source of cave microclimate disturbance, yet visitor-induced variability is difficult to distinguish from natural environmental fluctuations. The coronavirus pandemic created a natural experiment at Poole’s Cavern, United Kingdom, in which periods of complete closure could be compared with contrasting visitor access regimes. Two years of high resolution temperature records from six monitoring points were analysed. Harmonic regression and a state space model removed deterministic diurnal cycles and lower frequency temperature variability. The remaining residual variability differed systematically among visitor access regimes and between daytime and nighttime conditions. Spectral analysis of the residuals identified …

Go to article

Bioactive Potential Of Microbial Isolates From Yoluja Cave And Jepirramüin Rock Shelter, Cabo De La Vela (Colombia), Juan Sebastián López Caro, Virginia Patricia Roa Angulo, Alex Alberto González Vargas Oct 2026

Bioactive Potential Of Microbial Isolates From Yoluja Cave And Jepirramüin Rock Shelter, Cabo De La Vela (Colombia), Juan Sebastián López Caro, Virginia Patricia Roa Angulo, Alex Alberto González Vargas

International Journal of Speleology

Subterranean environments harbor diverse microbial communities with significant potential for the production of bioactive compounds. This study evaluated the antimicrobial and antioxidant potential of microbial isolates obtained from Yoluja Cave and the Jepirramüin rock shelter, located in the coastal region of La Guajira, Colombia. Field sampling was conducted during three campaigns in July, September, and November 2025, including soil and surface samples collected along environmental gradients within each site. Microorganisms were isolated using selective culture media and identified through morphological and biochemical characterization. Selected strains were subjected to liquid fermentation and organic solvent extraction to obtain crude metabolites. Analysis of …

Go to article

Visitor Perceptions Of Lampenflora And Implications For Adaptive Show Cave Management: A Case Study From Ryusen-Do Cave, Japan, Kanato Ando, Kazuhide Nakajima, Shuji Watanabe, Masuo Komukai, Hidesato Kuwahara Oct 2026

Visitor Perceptions Of Lampenflora And Implications For Adaptive Show Cave Management: A Case Study From Ryusen-Do Cave, Japan, Kanato Ando, Kazuhide Nakajima, Shuji Watanabe, Masuo Komukai, Hidesato Kuwahara

International Journal of Speleology

Artificial lighting in show caves promotes lampenflora growth, altering cave ecosystems and posing persistent management challenges. Although various control methods have been proposed, their effectiveness and social acceptance remain context dependent. This study investigated visitors’ perceptions of lampenflora through questionnaire surveys and semi-structured interviews to explore adaptive management strategies. Results indicated that visitors generally held positive impressions of lampenflora, but these impressions became more critical after receiving information about its artificial origin and ecological impacts. At the same time, support for conservation-oriented management, including willingness to contribute financially, tended to increase following information provision. Tourism-related evaluations were more strongly associated …

Go to article

Did Seismic Events Trigger The Growth Of Aragonitic Speleothems In Mawmluh Cave, North-East India?, Dildi Dildi, Dana Riechelmann Dr., Michael Weber Dr., Anne Jantschke Dr., Regina Mertz-Kraus Dr., Denis Scholz Dr. Oct 2026

Did Seismic Events Trigger The Growth Of Aragonitic Speleothems In Mawmluh Cave, North-East India?, Dildi Dildi, Dana Riechelmann Dr., Michael Weber Dr., Anne Jantschke Dr., Regina Mertz-Kraus Dr., Denis Scholz Dr.

International Journal of Speleology

Mawmluh Cave, north-east India, is located in a seismically very active region within the Himalayas with frequent earthquakes of varying magnitude. So far, speleothems from the cave have mainly been used to reconstruct past monsoon variability. The potential effect of seismic events on speleothem formation in Mawmluh Cave, however, has not been studied in detail yet. We investigated three stalagmites from Mawmluh Cave, each predominantly consisting of calcite overlain by substantially younger aragonite at the top (i.e., an aragonite ‘cap’). 230Th/U-dating shows that the initiation of aragonite growth occurred between 1859 and 1950 CE in agreement with previous studies. The …

Go to article

The Examina: A Peer-Led Reflection Model For Purpose And Culture Change In Schools, Belle Liang, Timothy Klein, Elisa Liang, Terese Lund, Kendall Bronk Oct 2026

The Examina: A Peer-Led Reflection Model For Purpose And Culture Change In Schools, Belle Liang, Timothy Klein, Elisa Liang, Terese Lund, Kendall Bronk

Journal of Practitioner Research

The Examina is a peer-led reflection model that helps educators strengthen purpose and belonging in their daily work. It offers brief, structured opportunities for colleagues to pause and reconnect with why their work matters. More than 400 educators across three public school districts participated in the four-session peer reflection program, with 147 completing baseline surveys that informed this practitioner inquiry. Peer facilitators adapted four Examina practices (i.e., Future Crafting, Intention Setting, Insight Gathering, and Story Crafting) to fit their school cultures. Nearly eight in ten participants reported deeper purpose reflection and three in four reported greater belonging in their professional …

Go to article

Related Arts Teachers In A Professional Learning Community: On The Phenomenon Of Implementation, Noah Friedman Oct 2026

Related Arts Teachers In A Professional Learning Community: On The Phenomenon Of Implementation, Noah Friedman

Journal of Practitioner Research

In recent decades, the popularity of teacher collaboration and data-driven instructional practices has seen the increased use of the professional learning community (PLC) model as a method for school improvement. Within the PLC framework are singletons, educators who are the only ones who teach their subject in their buildings (Hansen, 2015). In elementary school settings, related arts teams (e.g. music, art, physical education, and so on) are often included in a PLC as an afterthought. To accommodate the distinctive needs of this team, I created an intervention tool and method to provide support to related arts teams as they implement …

Go to article

The Role Of Emotions In Understanding Inquiry As Stance, Yun-Chen Yen, Rachel Wolkenhauer Oct 2026

The Role Of Emotions In Understanding Inquiry As Stance, Yun-Chen Yen, Rachel Wolkenhauer

Journal of Practitioner Research

This case study of a Taiwanese teacher candidate’s inquiry experience during her internship uses emotions as a lens for analyzing how she developed and refined her inquiry stance as a critical habit of mind. Using emotions as points of reflection and action, the teacher candidate came to see herself as a responsible and critical generator of knowledge, understood practice as a synthesis of reflection and action, and reframed the purpose of inquiry as elevating student voices and cultivating teacher curiosity. An inquiry community played a critical role in sustaining her engagement and commitment. This study suggests that teacher emotions can …

Go to article

Preparing Relational Leaders In Teacher Education: Graduate Student Perspectives On Leadership Practices, Mary Louie Stahl Phd Oct 2026

Preparing Relational Leaders In Teacher Education: Graduate Student Perspectives On Leadership Practices, Mary Louie Stahl Phd

Journal of Practitioner Research

This practitioner research study examines how graduate education students prioritize relational, professional, and reflective leadership practices within a leadership framework used in a graduate teacher education course. While scholarship on care-centered leadership emphasizes the importance of relational trust, authenticity, and kindness in educational leadership, little research has explored how aspiring educators interpret and prioritize these leadership practices during their teacher preparation programs. Institutional Review Board approval was obtained for this study. Ten graduate students enrolled in a Human Learning, Development, and Motivation course completed an optional structured reflective survey based on engagement with a leadership framework. Data were analyzed using …

Go to article

Attention-Enhanced Multimodal Fusion Of Elevation And Aerial Imagery For Sinkhole Segmentation, Junfeng Zhu, Desireé Cunningham, Nathan Jacobs Oct 2026

Attention-Enhanced Multimodal Fusion Of Elevation And Aerial Imagery For Sinkhole Segmentation, Junfeng Zhu, Desireé Cunningham, Nathan Jacobs

Sinkhole Conference 2026

Image segmentation, the task of assigning a class label to each pixel in an image, has been widely applied in remote sensing to identify surficial geological and hydrological features from data sources such as multispectral satellite imagery, aerial photography, and digital elevation models. UNet is among the most widely adopted convolutional neural network architectures for segmentation, owing to its encoder–decoder structure and skip connections that enable precise spatial localization. UNet has been applied to detect sinkholes using lidar-derived high-resolution digital elevation data; however, existing models still fall short of the accuracy of manual sinkhole mapping. In this study, we aim …

Go to article

Comparing Manual And Automated Methods In Sinkhole Delineation: A Cantabrian Mountains (Spain) And Tasman Mountains (New Zealand) Case Study, Mario Puente-Sierra, Javier Santos-González, Rosa B. González-Gutiérrez Oct 2026

Comparing Manual And Automated Methods In Sinkhole Delineation: A Cantabrian Mountains (Spain) And Tasman Mountains (New Zealand) Case Study, Mario Puente-Sierra, Javier Santos-González, Rosa B. González-Gutiérrez

Sinkhole Conference 2026

Studies of karst landforms, such as sinkholes, have advanced in recent years due to technological advances and the rise of automated detection methods. Such methods offer notable time-saving strengths, but their limitations in complex terrains are frequently overlooked in modern literature. To compare these automated methods to traditional manual methods, we selected four karst massifs in the Cantabrian Mountains (Spain) and two in the Tasman Mountains (New Zealand) as study areas. High-resolution LiDAR-derived Digital Elevation Models were used to identify and map sinkholes. Automated detection was performed using a Geographic Information System and included: i) a depression-filling method; ii) a …

Go to article

Statewide Sinkhole Susceptibility Mapping In Florida Using Explainable Geoai, Osama M. Altarawneh, Weiwei Zhan, Clint Kromhout Oct 2026

Statewide Sinkhole Susceptibility Mapping In Florida Using Explainable Geoai, Osama M. Altarawneh, Weiwei Zhan, Clint Kromhout

Sinkhole Conference 2026

Sinkholes cause persistent damage to infrastructure, property, and groundwater resources across Florida. Statewide sinkhole hazard mitigation has been constrained by incomplete inventories and the absence of a high-resolution susceptibility map. This study presents a statewide sinkhole susceptibility assessment using an explainable GeoAI framework that integrates the citizen-reported Subsidence Incident Reports (SIR) database and a geologist-confirmed collapse-type sinkhole inventory from the Florida Geological Survey (FGS). Random Forest (RF) is used as the primary learner with ten geologic, hydrologic, topographic, and anthropogenic predictors. The influence of negative-sample buffer geometry on model behavior is evaluated across five annular buffer conditions (100-1000 m through …

Go to article

Mobile Lidar Scans Of Caves: Methods For Tying In Ground Control Points, Robert E. Salaz, Jake Slyder, Ellen Trautner, Georgia Schneider Oct 2026

Mobile Lidar Scans Of Caves: Methods For Tying In Ground Control Points, Robert E. Salaz, Jake Slyder, Ellen Trautner, Georgia Schneider

Sinkhole Conference 2026

Mapping cave passages using modern techniques such as Light Detection and Ranging (LiDAR) and photogrammetry are still in the juvenile stages. Newer technologies such as Simultaneous Location and Mapping (SLAM) LiDAR and faster computers have enabled speleologists to map caves much faster than traditional methods. From a land management perspective, the ability to efficiently collect detailed cave maps with reasonable precision quickly is crucial for decision making. The ongoing challenge with digital cave mapping using mobile LiDAR and photogrammetry techniques is geolocating the point-cloud underground. Mobile scanning methods can be tied to ground control points on the surface using high …

Go to article

Mapping Sinkholes And Closed Depressions In The Edwards Aquifer Recharge Zone: Comparison Of Lidar-Based Semi-Automated Detection Methods And Field Validation, Enzo Franceschi Genesi, Horia G. Olariu, Bradford Wilcox Oct 2026

Mapping Sinkholes And Closed Depressions In The Edwards Aquifer Recharge Zone: Comparison Of Lidar-Based Semi-Automated Detection Methods And Field Validation, Enzo Franceschi Genesi, Horia G. Olariu, Bradford Wilcox

Sinkhole Conference 2026

Sinkholes and closed depressions play a critical role in karst hydrology by facilitating rapid recharge to aquifer systems (Ford & Williams, 2007; White, 1988), yet their spatial distribution is often poorly quantified in large recharge zones, and the automated methods used to detect them vary widely in approach and reliability. This study compares three LiDAR-based automated detection methods to determine their relative performance for mapping sinkholes and closed depressions within the Edwards Aquifer Recharge Zone, using a 0.5-meter resolution bare-earth Digital Elevation Model derived from high-density airborne LiDAR point cloud data (12.66 points/m²) obtained from OpenTopography. The three methods evaluated …

Go to article

Springs Of The Catskill Mountains: A Conduit Flow System In Predominantly Siliciclastic Strata, Daniel H. Doctor, Joshua R. Benton, Martin A. Briggs, William E. Odom, Neil C. Terry Oct 2026

Springs Of The Catskill Mountains: A Conduit Flow System In Predominantly Siliciclastic Strata, Daniel H. Doctor, Joshua R. Benton, Martin A. Briggs, William E. Odom, Neil C. Terry

Sinkhole Conference 2026

The Catskill Mountains of New York state are composed of thick sequences of interbedded mudstone, sandstone, and siltstone that are intercalated with thin beds of paludal limestone and calcareous mudstone. Sandstones often contain rip-up clasts of calcareous material at their bases and contain minor amounts of carbonate cement throughout their mass. This minor amount of calcareous material weathers out to produce thin zones of solutional porosity and permeability integrated within perched aquifers that feed perennial hillslope springs. Solutional features are evident within thin carbonate lenses and along fractures in sandstones, occasionally resulting in explorable cave-sized conduits. This study focuses on …

Go to article

Karst At A Potential Construction Site Adjacent To The Delaware River Near The Glacial Terminus, New Jersey, Usa, Ira D. Sasowsky Oct 2026

Karst At A Potential Construction Site Adjacent To The Delaware River Near The Glacial Terminus, New Jersey, Usa, Ira D. Sasowsky

Sinkhole Conference 2026

The state of New Jersey is not known for extensive karst landscapes, but there are over 100 caves listed in a survey of those features. Numerous sinkholes have also been identified, though no comprehensive database yet exists. Occasional news stories have reported damaging collapses, many of which seem infrastructure related, in several counties. This paper reports on the conditions at a proposed major construction site in a glaciated limestone terrane, Warren County. The area is underlain by the Allentown Dolomite and the Beekmantown Group carbonates (Cambrian/Ordovician age), and covered with a variable layer of glaciofluvial sediments. The area is of …

Go to article

Karst Sinkholes And Civil Engineering: Overview Of Characterization And Treatment Options From A Geophysical And Geotechnical Viewpoint, Mia Painter, Stephen Welsh Oct 2026

Karst Sinkholes And Civil Engineering: Overview Of Characterization And Treatment Options From A Geophysical And Geotechnical Viewpoint, Mia Painter, Stephen Welsh

Sinkhole Conference 2026

Sinkholes pose a significant geohazard to civil engineering infrastructure in regions underlain by carbonate karst terrain. Selecting an appropriate stabilization method requires balancing site conditions, infrastructure risk, environmental considerations, and cost, all of which depend on a thorough understanding of the planned or existing infrastructure and subsurface conditions. This paper provides an overview of common sinkhole characterization and stabilization methods used in the Mid-Atlantic and Appalachian regions of the United States from both geotechnical and geophysical perspectives. The application of geophysical methods in conjunction with intrusive investigations is reviewed as a means of reducing subsurface uncertainty and refining treatment designs. …

Go to article

Sinkhole Hazards, Risks, And Remediation: A Fifty-Year Case Study In New Jersey, Usa, Oladoyin Kolawole, Rita L. Sousa, Christina Comuso, Mohab Hussein Oct 2026

Sinkhole Hazards, Risks, And Remediation: A Fifty-Year Case Study In New Jersey, Usa, Oladoyin Kolawole, Rita L. Sousa, Christina Comuso, Mohab Hussein

Sinkhole Conference 2026

New Jersey presents a uniquely complex sinkhole and ground subsidence hazard shaped by intersecting geological, industrial, and anthropogenic forces. Sinkhole herein refers primarily to collapse sinkholes, that is, the abrupt or progressive downward failure of the ground surface into subsurface voids, as distinct from solutional closed depressions of purely karst origin. This paper synthesizes five decades (1976-2026) of documented sinkhole and ground subsidence records across the state, examining root causes, societal and environmental impacts, and remediation strategies employed in response to such hazards. The review shows that New Jersey’s hazard is governed by three dominant mechanisms: karst dissolution in carbonate …

Go to article

Creating A Karst Features Map Of A 7.5-Minute Quadrangle In Northern New Jersey, Zachary Schagrin Oct 2026

Creating A Karst Features Map Of A 7.5-Minute Quadrangle In Northern New Jersey, Zachary Schagrin

Sinkhole Conference 2026

Extensive areas of northern New Jersey are underlain by carbonate rocks, ranging from Proterozoic marbles to Paleozoic limestones and dolomites. These areas include large portions of Sussex and Warren Counties, as well as smaller areas within Hunterdon, Morris, Passaic, and Somerset Counties. As part of its efforts to map the geology of the state, the New Jersey Geological and Water Survey (NJGWS) has undertaken efforts to create karst features maps of quadrangles within this area—known as the Karst Susceptibility Project Area. Through field mapping, GIS analysis, and interpretation of past data collection, NJGWS began publishing these 1:24,000-scale maps in 2023. …

Go to article

Production Variability In The Edwards Aquifer, South-Central Texas, Usa, Jennifer Raye (Adkins) Schudrowitz, Linda K. Bevis Oct 2026

Production Variability In The Edwards Aquifer, South-Central Texas, Usa, Jennifer Raye (Adkins) Schudrowitz, Linda K. Bevis

Sinkhole Conference 2026

The San Antonio Water System (SAWS) serves more than two million people and is among the largest water utilities in the United States. Much of SAWS’s supply is sourced from the Edwards (Balcones Fault Zone) Aquifer (Edwards BFZA), a major sole‑source karst aquifer in south‑central Texas. The aquifer exhibits pronounced spatial heterogeneity in well performance due to its karstic nature, structurally complex setting, and variable depositional facies. Recent severe drought and pumping restrictions have emphasized the need to understand where within the aquifer to drill and how inter‑station performance differs under stress. This study evaluates production variability across SAWS pump‑station …

Go to article

Remediating Groundwater In A Karst Terrane: Encouraging Results And Lessons Learned, Urvi Tulsiani, Jason M. Tillotson, Allison Nelan, Keith A. White Oct 2026

Remediating Groundwater In A Karst Terrane: Encouraging Results And Lessons Learned, Urvi Tulsiani, Jason M. Tillotson, Allison Nelan, Keith A. White

Sinkhole Conference 2026

Karst aquifers, characterized by a combination of multiple porosity types, discrete flow paths, and variable hydraulic conductivities, create a highly complex and heterogeneous environment that influences both the storage capacity and transport of contaminants in the subsurface. These complexities of karst aquifers present unique challenges for remediating contaminated groundwater. Pilot studies were performed at eight sites at Redstone Arsenal (RSA) in Huntsville, Alabama, to assess the viability of in situ injection-based remedies to treat groundwater impacted by chlorinated volatile organic compounds (CVOCs) and perchlorate in the epikarst, the uppermost, highly weathered rind of karst bedrock. The studies assessed effectiveness of …

Go to article

A Simple Approach To Assessing Groundwater Discharge Behavior At Government Spring, Central New Mexico, Matthew T. Kaspar, Benjamin Tobin, Margaret Furtner Oct 2026

A Simple Approach To Assessing Groundwater Discharge Behavior At Government Spring, Central New Mexico, Matthew T. Kaspar, Benjamin Tobin, Margaret Furtner

Sinkhole Conference 2026

Government Spring is the complex perennial source of the lower Rio Bonito in central New Mexico with numerous ephemeral sources and a complex surface water – groundwater interface. Discharge from this karst spring is critical in maintaining downstream agricultural activities and communities. As part of a larger study to document the groundwater basin of this spring, this study focuses on simple repeated measurements to assess the surface water – groundwater interactions along the spring run. We established 12 repeatable measurement sites for discharge, temperature, pH, and specific conductivity. Data collected at a monthly interval provides a snapshot of surface water …

Go to article

Ongoing Dye Tracing Prompts Major Reevaluation Of Groundwater Divides For The Lost River Karst System, Bowling Green, Ky, Usa, Lee Anne Bledsoe, Chris G. Groves, Nick Lawhon Oct 2026

Ongoing Dye Tracing Prompts Major Reevaluation Of Groundwater Divides For The Lost River Karst System, Bowling Green, Ky, Usa, Lee Anne Bledsoe, Chris G. Groves, Nick Lawhon

Sinkhole Conference 2026

The Lost River Groundwater Basin located in south-central Kentucky may be one of the most thoroughly investigated karst basins in the US. Over the past 50 years, numerous studies have been conducted primarily due to the environmental challenges created by urban development on a well-developed sinkhole plain. The City of Bowling Green (pop. ~80,000) covers much of the basin but lies primarily in the northern, downstream reach nearest the main outlet of the system, the Lost River Rise. However, land use in the southern, up-gradient, portion of the basin is quickly changing from undeveloped and/or agriculture to industrial and residential. …

Go to article

A Field-Inspired Investigation Of Conduit Network Impacts On Spring Flow In Karst Aquifers, Jennifer Huang, Jannes Kordilla, Marco Dentz, John Barry, Christian Langevin, Peter Kang Oct 2026

A Field-Inspired Investigation Of Conduit Network Impacts On Spring Flow In Karst Aquifers, Jennifer Huang, Jannes Kordilla, Marco Dentz, John Barry, Christian Langevin, Peter Kang

Sinkhole Conference 2026

Effective management of karst aquifers necessitates accurate characterization of flow and transport. However, modeling these highly heterogeneous systems is challenging due to the complex partitioning of recharge between bedrock and the embedded conduit network. The properties of conduit networks impact flow and transport, but there has not been a systematic, quantitative study of how conduit network structure and geometry impact spring hydrographs in naturalistic field conditions. In this field-inspired modeling study, we attempt to identify key geometric and structural properties of conduit networks that control flow in karst aquifers and use these insights to constrain our understanding of a nitrate …

Go to article

Stratigraphic Controls On Recharge To The Confined Aquifer Of The North Coast Karst Belt Of Puerto Rico, Brian A. Smith Oct 2026

Stratigraphic Controls On Recharge To The Confined Aquifer Of The North Coast Karst Belt Of Puerto Rico, Brian A. Smith

Sinkhole Conference 2026

The north coast karst belt of Puerto Rico is well known for its conical shaped, limestone hills (mogotes), the Río Camuy cave system, the Arecibo Observatory (now defunct) where a large reflecting antenna is situated in a large (but modified) sinkhole, and hundreds or thousands of other caves. The two main aquifers associated with the north coast karst belt of Puerto Rico provide water for industry, agriculture, municipalities, and domestic uses. Tertiary-age geologic formations associated with both aquifers consist largely of limestone. Significant karst features such as mogotes and sinkholes are common where these units are exposed at the surface. …

Go to article

Characterization Of The Galena Karst Of East-Central Olmsted County, Minnesota, John D. Barry, Ronald C. Spong, Peter J. Hutchinson, Martin Larsen, Anthony C. Runkel Oct 2026

Characterization Of The Galena Karst Of East-Central Olmsted County, Minnesota, John D. Barry, Ronald C. Spong, Peter J. Hutchinson, Martin Larsen, Anthony C. Runkel

Sinkhole Conference 2026

The Galena Group is mostly composed of carbonate rock with subordinate beds of fine siliciclastics, mainly shale. In southeastern Minnesota, it is a source of water for domestic and agricultural use. Hydrologic and geochemical characterization of a Galena Group spring, Bear Spring, began in 1979. Recent springshed delineation through dye tracing and continuous level, temperature, and nitrate monitoring has shed light on the aquifer’s hydrologic response to precipitation, but the degree of karstification in the Galena was unclear. Current and planned future modeling require additional insight into the pervasiveness of fractures and conduits, and their properties. A suite of characterization …

Go to article

Investigating Sediment Accumulation Dynamics Via Integration Of Gis And Remote Sensing Tools Along With Physical/Chemical Characteristics Of Sediments In Owl Cave, Highland County, Virginia, Dhanuska B. Wijesinghe, Spencer Schmidt Oct 2026

Investigating Sediment Accumulation Dynamics Via Integration Of Gis And Remote Sensing Tools Along With Physical/Chemical Characteristics Of Sediments In Owl Cave, Highland County, Virginia, Dhanuska B. Wijesinghe, Spencer Schmidt

Sinkhole Conference 2026

The Valley region of Virginia, USA, features cave and karst systems. Variation in surface topography and vegetation within these systems significantly affects sediment accumulation in cave ecosystems. Remote sensing and GIS tools effectively analyze surface conditions, including vegetation cover and its influence on sediment buildup in caves. This study involved collecting high-resolution drone imagery, such as LiDAR, multispectral, and thermal data near Owl Cave in Highland County, VA, to understand the sediment accumulation process inside the cave system. High-resolution digital elevation models (DEMs) were created from LiDAR point clouds, and vegetation indices like Normalized Difference Vegetation Index (NDVI) were calculated …

Go to article

Next Last