Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Hydrology (2069)
- Geology (1807)
- Environmental Sciences (1802)
- Geomorphology (1214)
- Other Environmental Sciences (1162)
-
- Oceanography and Atmospheric Sciences and Meteorology (1101)
- Sedimentology (1089)
- Paleontology (1078)
- Stratigraphy (1047)
- Soil Science (983)
- Water Resource Management (979)
- Other Earth Sciences (822)
- Environmental Monitoring (800)
- Environmental Indicators and Impact Assessment (613)
- Natural Resources Management and Policy (537)
- Life Sciences (508)
- Natural Resources and Conservation (455)
- Natural Resource Economics (372)
- Climate (349)
- Sustainability (342)
- Fresh Water Studies (289)
- Agriculture (275)
- Agricultural Economics (225)
- Environmental Health and Protection (222)
- Engineering (216)
- Civil and Environmental Engineering (192)
- Atmospheric Sciences (186)
- Paleobiology (168)
- Keyword
-
- Nebraska (564)
- Groundwater (124)
- Drought (121)
- Water (77)
- Test (74)
-
- Hole (72)
- Logs (72)
- United States (72)
- Geology (67)
- Conservation and Survey Division (63)
- Map (61)
- Irrigation (54)
- Water Survey Paper (53)
- Wells (47)
- Resource (46)
- Climate change (45)
- Remote sensing (34)
- Diatoms (33)
- Paleoclimate (32)
- Soil (32)
- Groundwater Nebraska (31)
- Water Nebraska (31)
- Agriculture (30)
- Level (29)
- Csd (26)
- News (26)
- Conservation (25)
- Holocene (22)
- Evapotranspiration (21)
- Great Plains (21)
- Publication Year
- Publication
-
- United States Geological Survey: Staff Publications (1026)
- Conservation and Survey Division: Faculty and Staff Publications (901)
- Department of Earth and Atmospheric Sciences: Faculty Publications (670)
- School of Natural Resources: Dissertations, Theses, and Student Research (231)
- United States Agricultural Commodities in Drought Archive (219)
-
- United States Geological Survey: Publications (149)
- Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research (146)
- National Drought Mitigation Center: Faculty Publications (136)
- Bulletin of the University of Nebraska State Museum (1924–2023) (112)
- Daugherty Water for Food Global Institute: Faculty Publications (109)
- Robert F. Diffendal, Jr., Publications (104)
- United States Environmental Protection Agency: Publications (98)
- DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023) (68)
- United States Geological Survey: Water Reports and Publications (68)
- High Plains Regional Climate Center: Staff Publications (64)
- School of Natural Resources: Faculty Publications (50)
- Nebraska Water Center: Faculty Publications (48)
- Nebraska Agricultural Experiment Station: Historical Research Bulletins (22)
- Prairie Post: Quarterly Newsletter of the High Plains Regional Climate Center (21)
- Daugherty Water for Food Global Institute: Administrative Materials (15)
- Department of Environmental Studies: Undergraduate Student Theses (15)
- ANDRILL Research and Publications (14)
- Geochemistry of Sulfate Minerals: A Tribute to Robert O. Rye (14)
- Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023– (12)
- United States Army Corps of Engineers, Omaha District (12)
- United States National Park Service: Publications (12)
- Adam Liska Papers (11)
- George E. Condra Publications (11)
- School of Biological Sciences: Faculty Publications (11)
- United States Geological Survey: Datasets (11)
- Publication Type
Articles 4171 - 4200 of 4538
Full-Text Articles in Earth Sciences
Basic Data Report Lower Cedar River Drainage Basin, Nebraska, J.B. Hyland
Basic Data Report Lower Cedar River Drainage Basin, Nebraska, J.B. Hyland
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Field Conference On The Tertiary And Pleistocene Of Western Nebraska (Guide Book For The Ninth Field Conference Of The Society Of Vertebrate Paleontology), C. Bertrand Schultz, Thompson M. Stout, Charles H. Falkenbach, Lloyd G. Tanner, Harold J. Cook, Alvin Leonard Lugn
Field Conference On The Tertiary And Pleistocene Of Western Nebraska (Guide Book For The Ninth Field Conference Of The Society Of Vertebrate Paleontology), C. Bertrand Schultz, Thompson M. Stout, Charles H. Falkenbach, Lloyd G. Tanner, Harold J. Cook, Alvin Leonard Lugn
Department of Earth and Atmospheric Sciences: Faculty Publications
This Field Conference is scheduled for five days, July 31-August 3 (main excursion) and August 4 (post-conference excursion), 1961. Its purpose is to consider recent work and problems in stratigraphy and vertebrate paleontology concerned with deposits ranging in age from Oligocene through Pleistocene, in western Nebraska. The Guide Book is the Ninth issued by sponsoring institutions for the Society of Vertebrate Paleontology (the others having been published in 1941, 1947, 1948, 1950, 1951, 1'953, 1956, and 1958). It thus commemorates the 20th Anniversary of the First Field Conference of the Society, as well as the 90th Anniversary of the establishment …
Water Levels In Observation Wells In Nebraska 1960, C.F. Keech
Water Levels In Observation Wells In Nebraska 1960, C.F. Keech
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Microorganisms And Soil Structure, T. M. Mccalla, F. A. Haskins
Microorganisms And Soil Structure, T. M. Mccalla, F. A. Haskins
Department of Agronomy and Horticulture: Faculty Publications
SUMMARY
Good stable soil structure is valuable for promoting the growth of plants and micro-organisms by permitting enhanced aeration and water penetration and by decreasing erosion under some conditions.
Micro-organisms influence water percolation through the soil. They may plug up soil pores with byproducts of growth and reduce water percolation. On the other hand, if a soil containing a large amount of microbial products is stirred and allowed to dry, then the percolation may be high.
Micro-organisms are involved in stabilizing soil structure by their products of decomposition and their cellular binding material, such as mycelia. Microorganisms differ greatly in …
Wells In Fillmore County, Nebraska, C.F. Keech
Wells In Fillmore County, Nebraska, C.F. Keech
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Groundwater Map Of Nebraska, November 1960, E. C. Reed, V. H. Dreeszen
Groundwater Map Of Nebraska, November 1960, E. C. Reed, V. H. Dreeszen
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Wells In Hamilton County, Nebraska, C.F. Keech
Wells In Hamilton County, Nebraska, C.F. Keech
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Water Levels In Observation Wells In Nebraska, 1959, C. F. Keech
Water Levels In Observation Wells In Nebraska, 1959, C. F. Keech
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
The Geological Section Of Nebraska, E. C. Reed
The Geological Section Of Nebraska, E. C. Reed
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
On The Status Of Theocampe Haeckel, And Certain Similar Genera, Benjamin H. Burma
On The Status Of Theocampe Haeckel, And Certain Similar Genera, Benjamin H. Burma
Department of Earth and Atmospheric Sciences: Faculty Publications
This paper is a revision of the generic nomenclature of a few radiolarian genera whose species are good zone and index fossils. The following genera are revised more or less extensively: Sethamphorus, Sethocephala, Dictyocephalus, Theocampe, and Tricolocampe. The following names are reduced to synonomy: Dictyocryphalus, Cryptocephalus, Dictyoprora (1882), Platycryphalus, Dictyoprora (1887), Theocamptra, Theocampana, Tricolocampium, Tricolocamptra, and Theocampula. Diabolocampe is described as a new genus.
Geology Of The Upper Middle Creek Area Huerfano County, Colorado, J. H. Copeland
Geology Of The Upper Middle Creek Area Huerfano County, Colorado, J. H. Copeland
Open Access Master's Theses (through 2010)
The Sangre de Cristo Mountains of Colorado and New Mexico are, geologically speaking, relatively unknown. The equivocal nature of our knowledge of the range was a primary reason for studying a portion of it in some detail. Most of the previous studies have been concerned with the northern part of the range in Colorado, in the general area between Salida and La Veta Pass. This work has indicated that the complicated structure which characterizes the northern part of the range becomes simpler to the south. Therefore, a second objective of the current study has been to test this hypothesis. Thirdly, …
Water Levels In Observation Wells In Nebraska, 1958, C. F. Keech
Water Levels In Observation Wells In Nebraska, 1958, C. F. Keech
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Geologic And Ground-Water Reconnaissance Of The Loup River Drainage Basin Nebraska, R. T. Sniegocki, R. H. Langford
Geologic And Ground-Water Reconnaissance Of The Loup River Drainage Basin Nebraska, R. T. Sniegocki, R. H. Langford
United States Geological Survey: Publications
The Loup River and its tributaries drain an area of about 15,230 square miles in central Nebraska. The upper three-fifths of the drainage basin is in the Sand Hills region of Nebraska, and the lower two-fifths is in the loess plains and hills region. An eastward-thinning wedge of semiconsolidated and unconsolidated deposits of Tertiary and Quaternary age underlies the surficial dune sand and loess. These deposits, which are recharged by infiltrating precipitation, contain a tremendous volume of water at least 400 million acre-feet and annually discharge about 1.7 million acre-feet into streams. Although wells supply nearly all the water used …
Engineer Intelligence Study No. 191, Terrain Analysis, Alaska Slope Region, Alaska, 1959, Military Geography Branch, Usgs, Robert Bolin , Depositor
Engineer Intelligence Study No. 191, Terrain Analysis, Alaska Slope Region, Alaska, 1959, Military Geography Branch, Usgs, Robert Bolin , Depositor
United States Department of Defense Military Intelligence
The summary on Page 5 is paraphrased as follows. This digital document is a generalized description of the Arctic Slope region -- an area covering approximately 70,000 square miles. Access to the region and the feasibility of various access routes are discussed. Location and extent of natural fuel supplies are given. Factors controlling outdoor work feasibility are summarized graphically on Page 19. A terrain analysis of each of the three major physiographic provinces of the region. Those provinces are the Arctic Coastal Plain, Arctic Foothills, and Brooks Range provinces. Geographic factors which affected cross-country movement, construction, and water supply within …
An Iron Fulgurite From Nebraska, C. M. Riley
An Iron Fulgurite From Nebraska, C. M. Riley
Bulletin of the University of Nebraska State Museum (1924–2023)
From the time of the ancients man has been impressed with the force of lightning and its effect on the rocks at the surface of the earth. It was Saussure in 1786 who first wrote a scientific account of a true fulgurite, and a wealth of literature has been written about the subject since this time. Many unusual fulgurites have been described, some of which may not truly be the result of lightning. The iron fulgurite is a strange conical object about 3 inches high composed mainly of tiny spheres and filaments of metallic iron intermixed with a small amount …
Boone County Preliminary Ground Water Study 1959 (Gm-14): Svoboda, G.R. Conservation And Survey Division , Size 8.5" X 11"., G.R. Svoboda
Boone County Preliminary Ground Water Study 1959 (Gm-14): Svoboda, G.R. Conservation And Survey Division , Size 8.5" X 11"., G.R. Svoboda
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Nebraska Groundwater Relation To Median, Fall 1958
Nebraska Groundwater Relation To Median, Fall 1958
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Groundwater Map Of Nebraska Showing Relation Of Fall 1959 Readings To Median Water Level Measurement, E. C. Reed
Groundwater Map Of Nebraska Showing Relation Of Fall 1959 Readings To Median Water Level Measurement, E. C. Reed
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Water Levels In Observation Wells In Nebraska, 1957, C. F. Keech
Water Levels In Observation Wells In Nebraska, 1957, C. F. Keech
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Oil In Nebraska
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Total Number Of Irrigation Wells Located In Nebraska Counties As Of 1958
Total Number Of Irrigation Wells Located In Nebraska Counties As Of 1958
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Photograph Of Relief Model Map Of Nebraska, Conservation And Survey Division
Photograph Of Relief Model Map Of Nebraska, Conservation And Survey Division
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Nebraska Groundwater Level (Decline & Rise) As Of December 1957., E. C. Reed
Nebraska Groundwater Level (Decline & Rise) As Of December 1957., E. C. Reed
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Preliminary Estimate Of The Underflow Across The South Dakota-Nebraska State Line In The Niobrara River And Ponca Creek Drainage Basins, E. C. Reed, C. F. Keech
Preliminary Estimate Of The Underflow Across The South Dakota-Nebraska State Line In The Niobrara River And Ponca Creek Drainage Basins, E. C. Reed, C. F. Keech
Conservation and Survey Division: Faculty and Staff Publications
The purpose of this paper is to estimate the amount of ground water flowing across the South Dakota-Nebraska State line within the Niobrara River basin, including the Ponca Creek basin. The study was made at the request of the Niobrara River Compact Commission. The estimates fiven in the paper are preliminary and subject to revision.
Industrial Wastes: Bio-Assays For Control Of Industrial Effluents, Croswell Henderson, Clarence M. Tarzwell
Industrial Wastes: Bio-Assays For Control Of Industrial Effluents, Croswell Henderson, Clarence M. Tarzwell
United States Environmental Protection Agency: Publications
Waste effluents from many industries are toxic to fish and other aquatic life. The control or treatment of these wastes for safe release into receiving waters presents a problem of consider able magnitude.
Much effort has been expended by some industries to solve this problem, primarily through chemical analysis for possible toxic components and then generally by a search of the literature to find out how toxic a particular component may be. Unfortunately, this approach has not been successful, nor can it be expected to be productive of satisfactory answers.
Medial Pleistocene Fossil Vertebrate Localities In Nebraska, C. Bertrand Schultz, Lloyd G. Tanner
Medial Pleistocene Fossil Vertebrate Localities In Nebraska, C. Bertrand Schultz, Lloyd G. Tanner
Bulletin of the University of Nebraska State Museum (1924–2023)
The accurate geologic dating of Pleistocene vertebrate localities which occur outside the glaciated regions has always been difficult. Several new fossil localities in Nebraska now provide data for a better understanding of the paleoecology and faunal evidence of the medial Pleistocene of the Great Plains region.
A fossil quarry, containing the remains of both vertebrates and invertebrates, has been discovered in south-central Nebraska (11/2 miles south and west of Angus in Nuckolls County). The fossils are preserved in Sappa silts in a lime concentration zone (C horizon) of a Yarmouth paleosol. The calcium carbonate appears to have been responsible for …
Log Of Test Holes Frenchman Creek Basin Nebraska, C. F. Creech
Log Of Test Holes Frenchman Creek Basin Nebraska, C. F. Creech
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Northeastern Cherry And Western Keya Paha County Preliminary Ground Water Study 1957 (Gm-26): Reed, E.C. Conservation And Survey Division , Size 8.5" X 11"., E.C. Reed
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Influence Of Various Factors On Aggregation Of Peorian Loess By Microorganisms, T. M. Mccalla, Francis A. Haskins, E. F. Frolik
Influence Of Various Factors On Aggregation Of Peorian Loess By Microorganisms, T. M. Mccalla, Francis A. Haskins, E. F. Frolik
Department of Agronomy and Horticulture: Faculty Publications
Soil structure is important in the attainment of adequate aeration for the aerobic microorganisms whose activities maintain such higher plant nutrients as sulfur, phosphorus, and nitrogen in a highly oxidized and thus readily available state. Good soil structure is also necessary for soil and water conservation, Under Nebraska conditions microorganisms and their decomposition products constitute a major source of soil-aggregating agents. The decomposition of crop residues and plant roots is important in the nutrition of these aggregating microorganisms. Other microorganisms, however, also utilize crop residues and plant roots, and they may decompose the aggregating agents as well, so that the …
Stream Pollution- Aquatic Macro-Invertebrate Communities As Indicators Of Organic Pollution In Lytle Creek, Arden R. Gaufin, Clarence M. Tarzwell
Stream Pollution- Aquatic Macro-Invertebrate Communities As Indicators Of Organic Pollution In Lytle Creek, Arden R. Gaufin, Clarence M. Tarzwell
United States Environmental Protection Agency: Publications
Year-round field studies of the com position and ecology of stream communities associated with the purification of organic wastes in streams were initiated on Lytle Creek in October, 1949. This creek, which is located about 45 miles northeast of Cincinnati, Ohio, is a tributary of the Little Miami River. Its drainage basin comprises 27 sq. mi., a third of which is contained within the city limits of Wilmington, Ohio, a city of some 7,412 persons