Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Nebraska - Lincoln (497)
- University of South Florida (328)
- Western Kentucky University (243)
- University of Kentucky (161)
- West Virginia University (137)
-
- Illinois State University (116)
- Missouri State University (110)
- Portland State University (108)
- University of Arkansas, Fayetteville (108)
- Wilfrid Laurier University (97)
- Utah State University (90)
- TÜBİTAK (87)
- Boise State University (77)
- Chapman University (69)
- Missouri University of Science and Technology (69)
- Montclair State University (57)
- Old Dominion University (57)
- Central Washington University (55)
- City University of New York (CUNY) (54)
- South Dakota State University (54)
- Louisiana State University (53)
- University of Texas Rio Grande Valley (50)
- Western Michigan University (45)
- College of Saint Benedict and Saint John's University (44)
- University of Nevada, Las Vegas (43)
- The University of Southern Mississippi (39)
- University of South Carolina (36)
- Indiana State University (35)
- University of New Hampshire (35)
- China Coal Technology and Engineering Group (CCTEG) (34)
- Keyword
-
- Geology (140)
- Climate change (92)
- Remote sensing (88)
- GIS (80)
- Geomorphology (67)
-
- Hydrology (67)
- Western Kentucky University (60)
- Geochemistry (59)
- Karst (58)
- Water quality (56)
- Groundwater (55)
- Geography (44)
- Remote Sensing (42)
- Drought (40)
- Climate (35)
- Agriculture (34)
- United States (32)
- Paleoclimate (31)
- Montana (29)
- Stratigraphy (29)
- Fluvial geomorphology (28)
- Vegetation (28)
- Earth sciences (26)
- Western Australia (26)
- Nebraska (25)
- Land use (24)
- Machine learning (24)
- Geophysics (23)
- Holocene (23)
- Caves (22)
- Publication Year
- Publication
-
- International Journal of Speleology (167)
- United States Geological Survey: Staff Publications (141)
- Masters Theses & Specialist Projects (119)
- Theses and Dissertations (115)
- IGC Proceedings (1977-2023) (109)
-
- Graduate Theses/Dissertations (108)
- Department of Earth and Atmospheric Sciences: Faculty Publications (100)
- Theses and Dissertations (Comprehensive) (93)
- Turkish Journal of Earth Sciences (87)
- Graduate Theses, Dissertations, and Problem Reports (ETD) (77)
- Geosciences Faculty Publications and Presentations (73)
- Electronic Theses and Dissertations (62)
- Graduate Theses and Dissertations (61)
- Masters Theses (60)
- School of Geosciences Faculty and Staff Publications (55)
- Glacial Deposits (48)
- Department of Earth and Environmental Studies Faculty Scholarship and Creative Works (46)
- Dissertations and Theses (46)
- The Compass: Earth Science Journal of Sigma Gamma Epsilon (44)
- Faculty Publications (43)
- USF Tampa Graduate Theses and Dissertations (40)
- School of Earth, Environmental, & Marine Sciences Faculty Publications (38)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (36)
- Geology Faculty Publications and Presentations (35)
- Biology, Chemistry, and Environmental Sciences Faculty Articles and Research (34)
- Coal Geology & Exploration (34)
- Conservation and Survey Division: Faculty and Staff Publications (34)
- All-Inclusive List of Electronic Theses and Dissertations (33)
- Mathematics, Physics, and Computer Science Faculty Articles and Research (32)
- Studia UBB Geologia (32)
- Publication Type
- File Type
Articles 3601 - 3630 of 3974
Full-Text Articles in Entire DC Network
Depositional And Deformational Structures In Three 'Esker-Like' Ridges, Southwestern Ontario, John D. Parish
Depositional And Deformational Structures In Three 'Esker-Like' Ridges, Southwestern Ontario, John D. Parish
Theses and Dissertations (Comprehensive)
The Dundalk Till Plain in southwestern Ontario is crossed by five “esker-like” ridges, believed to have been formed simultaneously during the early stage of the mid-Port Burce Stadial. The three middle ridges are the focus of this research, with each ridge having a different topographic form, but the length of, and distance between, ridges are similar. Occurrences of differing depositional structures and the presence of deformational structures over short lateral and vertical distances reveal the complexity of processes involved. The dominant primary sedimentary structures are large-scale tabular cross-beds. Many individual cross-beds are composed of poorly sorted, matrix-supported gravels. High variability …
An Evaluation Of Phosphorus Export From Four Urban Land Uses During Summer Rainfall-Runoff Events In The Laurel Creek Watershed, E. Martin Pemberton
An Evaluation Of Phosphorus Export From Four Urban Land Uses During Summer Rainfall-Runoff Events In The Laurel Creek Watershed, E. Martin Pemberton
Theses and Dissertations (Comprehensive)
Cultural eutrophication, resulting from anthropogenic inputs of nutrients, such as phosphorus, can be detrimental to aquatic ecosystems. The effectiveness of recent phosphorus abatement programs, focused on point source inputs such as municipal and industrial effluent, has brought attention to the reduction of non-point sources, such as urban runoff. Target phosphate loads for the Great Lakes, set by the International Joint Commission, are deemed unattainable, without phosphorous reduction from non-point sources (Yaksich and Rumer, 1980), and it is with this knowledge that this thesis is undertaken. Analysis of phosphate export data from areas of different urban land uses indicates that residential …
Glacial Deposits, Vol. 18, 1989-1990, Department Of Geography-Geology
Glacial Deposits, Vol. 18, 1989-1990, Department Of Geography-Geology
Glacial Deposits
Newsletter of the Department of Geography-Geology
Laboratory Studies Of Predatory Behaviour In Two Subspecies Of The Carabid Cave Beetle: Neaphaenops Tellkampfi, David M. Griffith
Laboratory Studies Of Predatory Behaviour In Two Subspecies Of The Carabid Cave Beetle: Neaphaenops Tellkampfi, David M. Griffith
International Journal of Speleology
Comparative studies on the foraging behaviour of Neaphaenops tellkampfi tellkampfi and N. t. meridionalis demonstrated adaptation to different environments. The southern subspecies N. t. meridionalis, which is found in wet muddy caves where cave cricket eggs are unlikely prey, did not locate buried cricket eggs and dug fewer and less accurate holes in the lab than the nominate subspecies. N. t. tellkampfi, which reaches high densities in sandy deep cave environments where cricket eggs are the only viable prey, gained significantly greater weight than meridionalis when presented buried cricket eggs as prey. There was no difference with respect …
Reproductive Biology Of Pinus Sylvestris L.: Seed Yield, Flower Phenology, The Response Of Young Seedlings To Ga 4/7, And Developmental Anatomy, Teresa K. Boes
Reproductive Biology Of Pinus Sylvestris L.: Seed Yield, Flower Phenology, The Response Of Young Seedlings To Ga 4/7, And Developmental Anatomy, Teresa K. Boes
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Within The Hundredth Meridian: Western States And Their River Basins In A Time Of Transition, John M. Volkman, Kai N. Lee
Within The Hundredth Meridian: Western States And Their River Basins In A Time Of Transition, John M. Volkman, Kai N. Lee
Boundaries and Water: Allocation and Use of a Shared Resource (Summer Conference, June 5-7)
29 pages.
Contains footnotes.
Allocating Groundwater Among Nations, States And Tribes, Ann Berkley Rodgers, Carolyn J. Abeita
Allocating Groundwater Among Nations, States And Tribes, Ann Berkley Rodgers, Carolyn J. Abeita
Boundaries and Water: Allocation and Use of a Shared Resource (Summer Conference, June 5-7)
70 pages.
Arkansas River Controversy, David W. Robbins
Arkansas River Controversy, David W. Robbins
Boundaries and Water: Allocation and Use of a Shared Resource (Summer Conference, June 5-7)
14 pages.
Geology In The Vicinity Of The City Of Fossil, Wheeler County, North-Central Oregon, Patrick W. Riseley
Geology In The Vicinity Of The City Of Fossil, Wheeler County, North-Central Oregon, Patrick W. Riseley
Loma Linda University Electronic Theses, Dissertations & Projects
The area of study is located on the north flank of the northeast-southwest trending Blue Mountains Anticlinorium in north-central Oregon. The primary geologic problems investigated were: 1) the age and stratigraphic position of leaf-bearing tufts mapped as Oligo-Miocene John Day Formation but surrounded by andesitic basalts of the Eo-Oligocene Clarno Formation, 2) the age of "olivine basalt" mapped as John Day Formation by some workers but referred to the Clarno Formation by others, and 3) the petroleum potential of the Fossil area.
To resolve these three problems I mapped a 25 square mile area surrounding Fossil at 1 :24,000 scale. …
Geographic Information Systems, Data, And Water Resources, Dwight A. Brown, Philip J. Gersmehl
Geographic Information Systems, Data, And Water Resources, Dwight A. Brown, Philip J. Gersmehl
Journal of the Minnesota Academy of Science
ABSTRACT-We evaluate three data handling methods for use in a GIS analysis of land-cover change impacts on runoff. A universe of 2560 point samples is analyzed to provide runoff calculations that would se1:7e _as a comparison base to evaluate different attribute logic systems. The attribute logics ~e evaluate are two va~1at1ons of tag and one of count. We chose a two by five mile area of Dakota County, Mmnesota as the test site, and prepared raster GIS maps of soil hydrologic groups and two plausible land covers. The count 1:1~thod for handling the generalization of data produced results that were …
Origin And Developmental History Of Minnesota Lakes, H. E. Wright Jr.
Origin And Developmental History Of Minnesota Lakes, H. E. Wright Jr.
Journal of the Minnesota Academy of Science
ABSTRACT-Most lakes in Minnesota owe their origin directly or indirectly to glacial deposition or erosion 10,000 to 20,000 years ago. The lakes' shapes have since been modified by waves and currents near the shores and by the deposition of sediment off-shore-principally the sediment produced by growth of algae and other organisms. This sediment is a receptacle for pollen grains blown into the lake from the surrounding vegetation, and the stratigraphic succession of pollen grains records the postglacial vegetational and thus climatic history of the area. The sediment also preserves the fossils of microorganisms that reveal by their chemical composition the …
Review Of The Wisalts Bank Installations, C J. Henschke
Review Of The Wisalts Bank Installations, C J. Henschke
Resource management technical reports
No abstract provided.
Ua35/11 Student Honors Research Bulletin, Wku Honors Program
Ua35/11 Student Honors Research Bulletin, Wku Honors Program
WKU Administration Documents
The WKU Student Honors Research Bulletin is dedicated to scholarly involvement and student research. These papers are representative of work done by students from throughout the university.
- Coates, Alan. Management's Attitude Toward Collective Bargaining
- Frew, Becky. The Effects of Personality Type and Social Support on Instances of Job Stress
- Green, Laura. Earth Sheltered Housing
- Gregory, Vicky. Fraud and Abuse by Medical Providers in Medicare and Medicaid
- Hignite, Susan. Japanese Students in Kentucky Classrooms
- Hodum, Martha. The Mathematically Gifted Child
- Jones, Rodney. Superman to Censorship: America's Romance with the Comic Book
- Marrs, Shawn. Romanticism and Unromanticism in Sir Gawain and the …
Surface Sediments And Their Relationship To Water Quality In Hillsborough Bay, A Highly Impacted Subdivision Of Tampa Bay, Florida, J.O.R. Johansson, A.P. Squires
Surface Sediments And Their Relationship To Water Quality In Hillsborough Bay, A Highly Impacted Subdivision Of Tampa Bay, Florida, J.O.R. Johansson, A.P. Squires
Reports
This paper will summarize the composition of surface sediment and sediment oxygen demand rated in Hillsborough Bay. Also, a first attempt is made to relate the nutrients released from these sediments to the phytoplankton, the dominant primary producers of the bay.
Pleistocene And Holocene Carbonate Environments On San Salvador Island, Bahamas: A Field Trip Guide, H. Allen Curran, Roger J. Bain, James L. Carew, John E. Mylroie, James W. Teeter, Brian White
Pleistocene And Holocene Carbonate Environments On San Salvador Island, Bahamas: A Field Trip Guide, H. Allen Curran, Roger J. Bain, James L. Carew, John E. Mylroie, James W. Teeter, Brian White
Geosciences: Faculty Publications
Although isolated and small in size, San Salvador Island is in many ways a unique place - an all carbonates setting on a small, tectonically stable platform, surrounded by deep oceanic waters, and an historical footnote as the widely accepted first landing site of Christopher Columbus in the New World in 1492. Columbus' stay here was brief, and the major events of subsequent history largely have passed San Salvador by. This is not a tourist island; the natural beauty, floras, and faunas of the Bahamas are well preserved here.
The overview theme of this series of field excursions on San …
Paleoenvironmental History Of The Middle Ordovician Rugosa Of Eastern North America, Gretchen Hampt Andreasen
Paleoenvironmental History Of The Middle Ordovician Rugosa Of Eastern North America, Gretchen Hampt Andreasen
Honors Papers
Our understanding of the structure and function of biological systems can be increased when viewed in the context of their evolutionary history on a geological time scale. Generally, both paleoecology and ecology have focused on the interrelationships of organisms and their environments in short time frames. For instance, a paleoecologist might study the fossil communities of the Columbus Limestone reefal environment at Marblehead, Ohio, or an ecologist might attempt to characterize the interrelationship of glacier lilies and their pollinators. Both workers may realize that the organisms they study evolved in response to ecological pressures, yet neither, most likely, considers that …
Blackland Prairies Of Southwestern Arkansas, Thomas L. Foti
Blackland Prairies Of Southwestern Arkansas, Thomas L. Foti
Journal of the Arkansas Academy of Science
The Blackland Prairie community type has been described in Texas; related communities exist in Alabama and Mississippi. The Arkansas variant of the community has not been described in detail. Since the Arkansas Natural Heritage Commission began a systematic inventory of the community in 1985, more than 36 remnants have been identified that retain substantial natural character. However, all show some degree of disturbance. Based on aerial photo interpretation, aerial inspection, and ground study, an initial description of the community is presented, including original distribution, soil, vegetation and relationship to similar communities of Texas, Mississippi, and Alabama.
Geologic Evolution Of Trail Ridge Eolian Heavy-Mineral Sand And Underlying Peat, Northern Florida, Eric Force, Fredrick J. Rich
Geologic Evolution Of Trail Ridge Eolian Heavy-Mineral Sand And Underlying Peat, Northern Florida, Eric Force, Fredrick J. Rich
Earth, Environment & Sustainability: Faculty Publications
The southern portion of Trail Ridge in Clay County, Fla., has been an important domestic source of altered ilmenite, zircon, and other minerals since 1949. The ridge as a physiographic feature extends in a north-south direction over 160 km and is 1 to 2 km wide. The ore is a fine- to medium-grained sand body that extends down from the crest of the ridge about 20 m. Average heavy-mineral content is about 4 percent. Over half of the ilmenite and zircon is contained in thin, dark laminae dipping 26° to 41 ° southwest; these laminae extend deep within the ore …
Ablation On Barpu Glacier, Karakoram Himalaya, Pakistan A Study Of Melt Processes On A Faceted, Debris-Covered Ice Surface, Mohammad Inamullah Khan
Ablation On Barpu Glacier, Karakoram Himalaya, Pakistan A Study Of Melt Processes On A Faceted, Debris-Covered Ice Surface, Mohammad Inamullah Khan
Theses and Dissertations (Comprehensive)
No abstract provided.
Some Hydrologic Aspects Of Snowmelt Runoff Under Summer Conditions, In The Barpu Glacier Basin, Central Karakoram, Himalaya, Northern Pakistan, Ali Ghazanfar
Theses and Dissertations (Comprehensive)
Snow and ice in high mountains represent and important water resource in many parts of the world, especially the dry continental interior of Central Asia. In the Northern Areas of Pakistan, mountain ranges are the primary sources of annually renewed water supplies. They give rise to rivers which are the only significant, sustainable source of fresh water. The Indus basin is drained by the river Indus and its major tributaries, the Kabul, Jhelum, Chanab, Ravi and Sutlej. Snowmelt contributes about 70 percent to the annual flow of these rivers, but is not timed to meet the requirements for crop production, …
Environmental Planning Of Large-Scale Water Projects: The Three Gorges Dam Case, China, Long Li
Environmental Planning Of Large-Scale Water Projects: The Three Gorges Dam Case, China, Long Li
Theses and Dissertations (Comprehensive)
Controversy over the construction of the Three Gorges Dam across the Yangtze River in China is an on-going national issue. Proposals have been advanced by numerous disciplinary research teams to identify the environmental consequences of the project development. However, whether the project will benefit or damage the overall environment still remains in question.
No matter which one of the four storage schemes is going to be put into operation, the human, economic, biological, and physical environmental alterations will have no equal in the our contemporary world and probably even for some time in the future. Above all, flood control, hydro-electricity …
Slope Stability As Related To Geology At Rainier, Columbia County, Oregon, James Douglas Gless
Slope Stability As Related To Geology At Rainier, Columbia County, Oregon, James Douglas Gless
Dissertations and Theses
Rainier, Oregon, has experienced problems in the development of residential and commercial sites, utilities, and transportation facilities as a result of slope instability. This study of slope stability at Rainier was conducted at the request of city officials.
Glacial Deposits, Vol. 17, 1988-1989, Department Of Geography-Geology
Glacial Deposits, Vol. 17, 1988-1989, Department Of Geography-Geology
Glacial Deposits
Newsletter of the Department of Geography-Geology
Lineamenti Geomorfologici Della Costa E Dei Fondali Del Golfo Di Trieste E Considerazioni Sulla Loro Evoluzione Tardo-Quaternaria, Ruggero Marocco
Lineamenti Geomorfologici Della Costa E Dei Fondali Del Golfo Di Trieste E Considerazioni Sulla Loro Evoluzione Tardo-Quaternaria, Ruggero Marocco
International Journal of Speleology
Description of geomorphology of the coasts and the seafloor of the Gulf of Trieste, with paleogeographical discussion on its Late Quaternary evolution.
Ua66/8/3 Geogram, Wku Geography & Geology
Ua66/8/3 Geogram, Wku Geography & Geology
WKU Administration Documents
Newsletter created by and about the WKU Geography & Geology highlighting activities of faculty, students and alumni.
Photoengraving, Photowires, And Microcomputers: Technological Incentives For Journalistic Cartography, Mark Monmonier
Photoengraving, Photowires, And Microcomputers: Technological Incentives For Journalistic Cartography, Mark Monmonier
Syracuse Scholar (1979-1991)
No abstract provided.
The Use Of Down-Hole Video To Evaluate Parameters Affecting Removal Of Storm Water Runoff Into A Karst Aquifer In Bowling Green, Kentucky, Philip Reeder
Masters Theses & Specialist Projects
Due to recent land use changes, runoff has greatly increased In Bowling Green, necessitating the drilling of nearly 600 drainage wells to direct storm water into the Lost River Karst Aquifer. Research was conducted to (1) differentiate areas of the city as optimal for removal of storm water runoff, (2) correlate lithologic features between wells, and (3) determine optimal depths to which new drainage wells should be drilled. This was accomplished using maximum capacity tests, correlation of lithologic features between wells and comparing void density to depth below the land surface.
It was only possible to develop general trends in …
Long-Term Reconstruction And Analysis Of White River Streamflow, M. K. Cleaveland, D. W. Stahle, J. G. Hehr
Long-Term Reconstruction And Analysis Of White River Streamflow, M. K. Cleaveland, D. W. Stahle, J. G. Hehr
Arkansas Water Resources Center Technical Reports
A 281-year reconstruction of White River annual runoff at Clarendon, Arkansas, was developed from a regional average of nine Oklahoma, Missouri, and Arkansas tree-ring chronologies (six post oak, Quercus stellata, and three baldcypress, Taxodium distichum). Inhomogeneity of the gaged series was detected with both double mass analysis (using state average total annual Arkansas precipitation) and regression (using the regional tree-ring average). Simple regression calibrated the homogeneous runoff data with the average ring width data from 1930 to 1980. Comparing the reconstruction with independent data verified the regression model. Variance of the reconstruction increases significantly during the 20th century, a change …
A Field Trip Guide To The Sue Point Fossil Coral Reef San Salvador Island, Bahamas, Brian White
A Field Trip Guide To The Sue Point Fossil Coral Reef San Salvador Island, Bahamas, Brian White
Geosciences: Faculty Publications
See other Smith authored Field Trip Guides of Gerace Research Centre.
An Investigation Of A Soil Gas Sampling Technique And Its Applicability For Detecting Gaseous Pce And Tca Over An Unconfined Granular Aquifer, Timothy J. Mayotte
An Investigation Of A Soil Gas Sampling Technique And Its Applicability For Detecting Gaseous Pce And Tca Over An Unconfined Granular Aquifer, Timothy J. Mayotte
Masters Theses
A soil gas sampling and analytical technique was investigated to evaluate its ability and versatility for detecting chlorinated hydrocarbons in unconfined aquifers. The technique was used successfully to delineate plumes of perchloroethene (PCE), and 1,1,1-trichloroethane (TCA) contamination present in the vadose zone, and at the water table of an unconfined sand and gravel aquifer. Soil gas samples were obtained by concentrating PCE and TCA vapors diffusing from these sources onto a sorbent material. The samples were analyzed by gas chromatography. The data from the analysis of these samples were used to provide an initial estimate of the source areas, and …