Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Nebraska - Lincoln (1696)
- University of South Florida (515)
- Western Kentucky University (437)
- Portland State University (395)
- Old Dominion University (351)
-
- Utah State University (325)
- University of Kentucky (269)
- Singapore Management University (263)
- Wilfrid Laurier University (222)
- City University of New York (CUNY) (219)
- University of Arkansas, Fayetteville (214)
- Chapman University (179)
- Clark University (168)
- West Virginia University (160)
- University of Nevada, Las Vegas (159)
- Louisiana State University (156)
- South Dakota State University (151)
- Claremont Colleges (140)
- Illinois State University (132)
- University of Colorado Law School (125)
- SIT Graduate Institute/SIT Study Abroad (123)
- Missouri State University (120)
- TÜBİTAK (119)
- Missouri University of Science and Technology (104)
- Central Washington University (103)
- Wright State University (103)
- Boise State University (101)
- University of Northern Iowa (99)
- University of Rhode Island (98)
- Nova Southeastern University (95)
- Keyword
-
- Climate change (320)
- Remote sensing (250)
- GIS (207)
- Geography (195)
- Sustainability (180)
-
- United States (150)
- Geology (148)
- Western Kentucky University (142)
- Climate (110)
- Water quality (110)
- Environment (105)
- Conservation (103)
- Agriculture (96)
- Mongolia (96)
- California (91)
- Alumni magazines (90)
- Clark University Geographical Society (90)
- Machine learning (89)
- Drought (84)
- Hydrology (83)
- Remote Sensing (82)
- Groundwater (77)
- Nebraska (76)
- Climate Change (75)
- Ecology (72)
- Geomorphology (70)
- Karst (65)
- Land use (61)
- Geochemistry (60)
- Biodiversity (59)
- Publication Year
- Publication
-
- School of Natural Resources: Faculty Publications (283)
- Theses and Dissertations (269)
- Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298 (266)
- Theses and Dissertations (Comprehensive) (198)
- USF Tampa Graduate Theses and Dissertations (185)
-
- Electronic Theses and Dissertations (179)
- Research Collection School Of Computing and Information Systems (176)
- International Journal of Speleology (173)
- Masters Theses & Specialist Projects (171)
- United States Geological Survey: Staff Publications (141)
- Dissertations and Theses (137)
- Graduate Theses and Dissertations (130)
- Faculty Publications (125)
- Graduate Theses/Dissertations (118)
- Independent Study Project (ISP) Collection (112)
- United States National Park Service: Publications (111)
- IGC Proceedings (1977-2023) (109)
- Masters Theses (107)
- WKU Administration Documents (104)
- Department of Earth and Atmospheric Sciences: Faculty Publications (100)
- Graduate Theses, Dissertations, and Problem Reports (ETD) (98)
- The Monadnock (Clark Geographical Society) (91)
- Publications and Research (90)
- Bulletin of Chinese Academy of Sciences (Chinese Version) (88)
- Turkish Journal of Earth Sciences (87)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (86)
- Marine Affairs Theses and Major Papers (85)
- Mathematics, Physics, and Computer Science Faculty Articles and Research (83)
- LSU Master's Theses (77)
- Geosciences Faculty Publications and Presentations (74)
- Publication Type
- File Type
Articles 11491 - 11520 of 12237
Full-Text Articles in Entire DC Network
Fundy Tidal Power: A Need To Reassess The Environmental Framework Protecting The Transboundary Environment, Robert W. Rudolph
Fundy Tidal Power: A Need To Reassess The Environmental Framework Protecting The Transboundary Environment, Robert W. Rudolph
Marine Affairs Theses and Major Papers
The concept of harnessing the tides for energy is receiving renewed attention in the maritime provinces of Canada and northeastern United States where a scarcity of indigenous energy resources exists. While proposals for several small tidal power facilities are being considered in Maine, in Canada, Nova Scotia officials are moving ahead with plans for a major tidal power project (4,028 MW) in the Minas Basin in the Bay of Fundy. The vast majority of the power generated from this facility is expected to be exported to the New York and New England areas which have a greater energy demand that …
Throughflow Troughs For The Measurement Of Shallow Seepage On Hillslopes, C J. Henschke, J A. Bessell-Browne
Throughflow Troughs For The Measurement Of Shallow Seepage On Hillslopes, C J. Henschke, J A. Bessell-Browne
Resource management technical reports
Throughflow troughs were installed to assess their effectiveness in quantifying shallow sub-surface flows on hillslopes. The majority of flow was found to occur from decayed root channels in clay sub-soils below the lowest gutter. The conclusion at this site is that shallow throughflow troughs installed on a small scale are not capable of quantifying all of the seepage occurring on hillslopes.
Historic Resource Study Bryce Canyon National Park, Nicholas Scrattish
Historic Resource Study Bryce Canyon National Park, Nicholas Scrattish
Elusive Documents
No abstract provided.
Ua66/8/3 Annual Report, Wku Geography & Geology
Ua66/8/3 Annual Report, Wku Geography & Geology
WKU Administration Documents
Annual report created by and about WKU Geography & Geology for the school year 1984-1985.
Permeability Versus Depth In The Upper Oceanic Crust' In Situ Measurements In Dsdp Hole 504b, Eastern Equatorial Pacific, Roger N. Anderson, Mark D. Zoback, Stephen H. Hickman, Robin L. Newmark
Permeability Versus Depth In The Upper Oceanic Crust' In Situ Measurements In Dsdp Hole 504b, Eastern Equatorial Pacific, Roger N. Anderson, Mark D. Zoback, Stephen H. Hickman, Robin L. Newmark
United States Geological Survey: Staff Publications
In situ permeabilities measured within the upper kilometer of oceanic crust in hole 504B on the south flank of the Costa Rica Rift decrease exponentially from 10-13 to 10-14 m2 in layer 2A (the upper 150m) to 10 -15 to 10-17 m2 in layer 2B (150-550 m into basement), and to 10-17 m2 and lower in layer 2C (deeper than 550 m). We estimate the permeability (k) versus depth (z) to vary as k(z)=0.11e(-z/50)x 10-12 m2. If this permeability versus depth function is representative of …
Iowa Academy Of Science Directory, 1985-86: Officers, Committees, And Membership Roster, Iowa Academy Of Science
Iowa Academy Of Science Directory, 1985-86: Officers, Committees, And Membership Roster, Iowa Academy Of Science
Iowa Academy of Science Documents
Contents:
Board of Directors ... 3
Program Directors ... 4
Section Chairs ... 5
Section Vice Chairs ... 8
Committees ... 11
Award Recipients ... 28
Past Presidents ... 30
Membership Roster ... 32
North American Vegetation Patterns Observed With The Noaa-7 Advanced Very High Resolution Radiometer, Samuel N. Goward, Compton J. Tucker, Dennis G. Dye
North American Vegetation Patterns Observed With The Noaa-7 Advanced Very High Resolution Radiometer, Samuel N. Goward, Compton J. Tucker, Dennis G. Dye
United States National Aeronautics and Space Administration: Publications
Spectral vegetation index measurements derived from remotely sensed observations show great promise as a means to improve knowledge of land vegetation patterns. The daily, global observations acquired by the Advanced Very High Resolution Radiometer, a sensor on the current series of U.S. National Oceanic and Atmospheric Administration meteorological satellites, may be particularly well suited for global studies of vegetation. Preliminary results from analysis of North American observations, extending from April to November 1982, show that the vegetation index patterns observed correspond to the known seasonality of North American natural and cultivated vegetation. Integration of the observations over the growing season …
Caves And Karst Of Kentucky, Percy H. Dougherty
Caves And Karst Of Kentucky, Percy H. Dougherty
Special Publication--KGS
Published in cooperation with the National Speleological Society. Includes an overview of Kentucky geology, karst, cave development, list of caves including Mammoth Cave and Carter Caves, historical caves, archaeology, and cave life of Kentucky.
Glacial Deposits, Vol. 13, 1984-1985, Department Of Geography-Geology
Glacial Deposits, Vol. 13, 1984-1985, Department Of Geography-Geology
Glacial Deposits
Newsletter of the Department of Geography-Geology
Soils And The Location Of Cacao Orchards At A Maya Site In Western Belize, Daniel R. Muhs, Robert R. Kautz, J. Jefferson Mackinnon
Soils And The Location Of Cacao Orchards At A Maya Site In Western Belize, Daniel R. Muhs, Robert R. Kautz, J. Jefferson Mackinnon
United States Geological Survey: Staff Publications
Cacao was one of the most important crops of the lowland Maya. Ethnohistoric sources document that the Postclassic-Colonial Period Maya settlement of Tipu in western Belize was an important cacao-growing center, yet evidence of where the cacao was grown is not apparent. We analysed the suitability of floodplain, terrace, and bedrock soils for cacao cultivation. Our results indicate that the soils most likely to have been used for cacao growth were those on the modem floodplain of the Macal River, based on their suitable physical and chemical properties. In addition, buried stone walls of Late Classic or Postclassic age that …
An Evaluation Of Uranium-Series Dating Of Fossil Echinoids From Southern California Pleistocene Marine Terraces, Daniel R. Muhs, Los Angeles County Museum Of Natural History, Los Angeles, Ca
An Evaluation Of Uranium-Series Dating Of Fossil Echinoids From Southern California Pleistocene Marine Terraces, Daniel R. Muhs, Los Angeles County Museum Of Natural History, Los Angeles, Ca
United States Geological Survey: Staff Publications
Fossil sea urchins (Strongylocentrotus) from Pleistocene marine terraces on the southern California Channel Islands have been dated by the uranium-series method in order to test the suitability of echinoids for dating marine terraces. Results indicate that urchin plates and spines do not behave as closed systems with respect to both uranium and thorium. Calculated ages based on these data do not agree with uranium-series ages (120,000 and 127,000 yrs) obtained previously from corals from the same localities. Thus, fossil sea urchins (Strongylocentrotus) are not considered suitable for uranium-series dating of Pleistocene marine terrace deposits.
Environmental Perception And Its Impacts On The Tourist Industry: A Case Study Of The Niagara Region, Donna Marie Senese
Environmental Perception And Its Impacts On The Tourist Industry: A Case Study Of The Niagara Region, Donna Marie Senese
Theses and Dissertations (Comprehensive)
The natural resources of the Niagara Region of Ontario have played an important role in the success of the tourist industry in the region. The Niagara Region has been developed on an industrial and agricultural base since the nineteenth century. Due to conflicting demands of the manufacturing, agricultural and tourism industries for aesthetic, recreational and waste disposal purposes, the physical environment has deteriorated. The research problem of this thesis is to determine the extent of the effect of this deteriorated environment upon the tourist industry in the Niagara Region.
Physical inventories of resources are not adequate in terms of evaluating …
Current, Erosional And Depositional Patterns At A River Confluence And Bend In The Nottawasaga River, Angus, Ontario, Gregory Robert Brooks
Current, Erosional And Depositional Patterns At A River Confluence And Bend In The Nottawasaga River, Angus, Ontario, Gregory Robert Brooks
Theses and Dissertations (Comprehensive)
At a bend and confluence of the Nottawasaga River, sixty-four measurements of flow velocities were recorded at points along vertical profiles regularly spaced across a series of cross-sections. From the summarization of the data into a ‘three dimensional’ diagram, the current velocity patterns in the river reach were evident.
As observed at low discharge levels, the low speeds and directional uniformity of the flow in the Nottawasaga River entering the study reach suggests that the observed asymmetrical channel the study reach suggests that the observed asymmetrical channel was a remnant of higher discharge levels. On the other hand, in the …
Polydesmide Et Craspedosomides Cavernicoles Nouveaux De France Et Du Maroc (Myriapoda - Diplopoda), Jean Paul Mauriès
Polydesmide Et Craspedosomides Cavernicoles Nouveaux De France Et Du Maroc (Myriapoda - Diplopoda), Jean Paul Mauriès
International Journal of Speleology
This is a description of the affinities and biogeographic significance of three new cavernicolous species of Diplopoda from France and Morocco. One species apparently belongs to the Polydesmida (family Paradoxosomidae) and the other two to Craspedosomida (families Caratosphydae and Chordeumidae).
1) Eviulisoma abadi n.sp. is distinguished from other species of this genus by total depigmentation, by the characters of the gonopodial orifice and the male gonopods, by the low number of segments (19) and by its geographic isolation (Morocco) and ecology (Kef Aziza cave). This justifies the establishment of a new sub-genus, Jeekelosoma. The other species of this genus …
New Records For Salentinella Ruffo (Crustacea Amphipoda) From Phreatic Waters Of Italy And Greece, Giuseppe Lucio Pesce
New Records For Salentinella Ruffo (Crustacea Amphipoda) From Phreatic Waters Of Italy And Greece, Giuseppe Lucio Pesce
International Journal of Speleology
New localities for the subterranean amphipod Salentinella Ruffo from central-eastern Mediterranean are reported. New collecting localities are listed for Italy, continental Greece and islands of Cephalonie and Zante. Furthermore, some remarks are made about the systematics, the variability and the ecology of the genus. Moreover, the Author refers to the main characteristics of a Salentinella sp. from central Italy, showing intermediate features between S. angelieri and S. franciscoloi. A map of the distribution of the genus Salentinella in Italy and in the Balkan-Dalmatian Peninsula is enclosed.
Survey Of Routing Algorithms For Computer Networks, Lu Yu, Thomas J. Sager
Survey Of Routing Algorithms For Computer Networks, Lu Yu, Thomas J. Sager
Computer Science Technical Reports
This thesis gives a general discussion of routing for computer networks, followed by an overview of a number of typical routing algorithms used or reported in the past few years. Attention is mainly focused on distributed adaptive routing algorithms for packet switching (or message switching) networks. Algorithms for major commercial networks (or network architectures) are reviewed as well, for the convenience of comparison.
Water Current, Volume 16, No. 6, November/December 1984
Water Current, Volume 16, No. 6, November/December 1984
Water Current Newsletter
1985 Water Resources Seminar Series
Water Resources Research Proposals
1985 Nebraska Water Conference
Kremer Lecture Series Speaker
New Dimensions in Nebraska Water Policy
Research Review: Scheduling Irrigation with a High Speed Center Pivot to Reduce Heat and Moisture Stress in Corn
Student Profile, Fall 1984, Division Of Student Affairs, Wright State University, Dayton, Ohio, Office Of Student Information Systems, Wright State University
Student Profile, Fall 1984, Division Of Student Affairs, Wright State University, Dayton, Ohio, Office Of Student Information Systems, Wright State University
Wright State University Student Fact Books
The student profile fact book has general demographic information on all students enrolled at Wright State University for Fall Quarter, 1984.
Rat Control In Alberta, Michael J. Dorrance
Rat Control In Alberta, Michael J. Dorrance
Vertebrate Pest Conference Proceedings: 11th (1984)
A rat control program, administered and coordinated by Alberta Department of Agriculture, has kept Alberta essentially free of Norway rats (Rattus norvegicus) since 1950. A control zone, 29 x 600 km, along the eastern border prevents rats from moving into Alberta from the east. Sporadic rat infestations within the interior of Alberta are reported by concerned citizens and eradicated by government personnel. Strong support for the program by citizens and local governments was developed through public education and information. The program has been successful for a variety of reasons including geography, climate, legislation, availability of warfarin, the relatively …
Resource Law Notes Newsletter, No. 3, Sept. 1984, University Of Colorado Boulder. Natural Resources Law Center
Resource Law Notes Newsletter, No. 3, Sept. 1984, University Of Colorado Boulder. Natural Resources Law Center
Resource Law Notes: The Newsletter of the Natural Resources Law Center (1984-2002)
No abstract provided.
Water Management Simulator Presentations, Leslie E. Mack
Water Management Simulator Presentations, Leslie E. Mack
Arkansas Water Resources Center Technical Reports
One of the larger stumbling blocks to comprehensive water management is the lack of public understanding of the multitude of variables that operate at the same time within the hydrologic cycle. With more public understanding, there is greater public support for various water projects. Dr. John R. Amend from Montana State University developed a water management simulator which could handle a large number of variables simultaneously of natural surface and groundwater flow plus a number of water use variables on an accelerated time sequence. By using several remote control devices, participants can "control" their water use but have no control …
Water Current, Volume 16, No. 5, September/October 1984
Water Current, Volume 16, No. 5, September/October 1984
Water Current Newsletter
Director's Report
1984 Irrigation Tour Highlights
Water Resources Seminar Announced
Burlington Northern Awards Grant
DEC Groundwater Strategy
Congress Passes HR 71
National Water Resources Research Conference
Research Review: Groundwater Management Using Control Analysis and Multiple Objective Techniques
Call for Papers
Effects Of Urbanization On The Hydrologic Regime Of Johnson Creek, Portland, Oregon, William Vandewater Clement
Effects Of Urbanization On The Hydrologic Regime Of Johnson Creek, Portland, Oregon, William Vandewater Clement
Dissertations and Theses
The Johnson Creek watershed, Portland, Oregon, has undergone urbanization at an increasing rate. Excessive flooding has occurred in the lower portions of the watershed, resulting in an estimated 1.5 million dollars worth of flood losses annually. In attempts to mitigate the flooding damages millions of dollars have been spent to channelize the creek, and over 200 thousand dollars has been spent during the last 20 years on preliminary feasibility studies alone.
The author saw a need to verify that there has been a change in the rainfall-runoff relationships in the upper Johnson Creek basin since 1941 and to quantify this …
Research Note: Pcbs In The Acushnet River Estuary, Jacek Sulanowski
Research Note: Pcbs In The Acushnet River Estuary, Jacek Sulanowski
Bridgewater Review
Much media attention has recently been devoted to potentially toxic substances disseminated throughout various components of the environment. In almost every case these substances had been manufactured and distributed under the assumption that they did not pose a threat to man. Indeed when tested by methods current at the time of their initial introduction the substances were considered benign. It was only later when technologically advanced and more sensitive methods of analyses were developed that the presence of these substances was considered to be of real concern. Unfortunately, in the interval between introduction and detection, the accumulation of these substances …
Barbados Ridge; Inner Trench Slope Sedimentation, William J. Cleary, H. Allen Curran, Paul A. Thayer
Barbados Ridge; Inner Trench Slope Sedimentation, William J. Cleary, H. Allen Curran, Paul A. Thayer
Geosciences: Faculty Publications
Quaternary sediments of this inner trench slope are chiefly foraminiferal-pteropod-nanno oozes that have been reworked and/or emplaced by gravity currents. These oozes are mixed with volcanogenic sediments and minor amounts of material derived from the insular shelf. Reworking occurs on topographic highs where fines are winnowed out and mass wasting and gravity currents are initiated; these processes ultimately result in the leveling of irregular floors of deeper, intervening slope basins. Petrographic analyses of graded intervals from the basin floors and slopes reveal the sands to be mixtures of planktic foraminifers (35%), pteropods (10%), and fresh, angular volcanic detritus (10-90%). On …
The Emerging Regime Of Islands As Archipelagic States, Frank Gable
The Emerging Regime Of Islands As Archipelagic States, Frank Gable
Marine Affairs Theses and Major Papers
This essay will discuss the significance of islands as archipelagos, i.e. any two or more islands identified politically as one entity. Within the body of this report will be references regarding the historical background to archipelagos and how they emerged into international topics of law. Further, the differences international law affords coastal archipelagos as opposed to outlying mid-ocean archipelagos will be interpreted. These differences include, for instance, the design of baselines used to enclose territorial waters. As the paper progresses, the reader will being to see how the Third United Nations Conference on the Law of the Sea (UNCLOS (III) …
Sunlight And Plants, Some Pursuits In Physiological Ecology, Martyn M. Caldwell
Sunlight And Plants, Some Pursuits In Physiological Ecology, Martyn M. Caldwell
Faculty Honor Lectures
A physiological ecologist, as the name suggests, focuses on the interface between plant physiology and the ecology of individual organisms. Yet, one in this field should know something about disciplines ranging from physiology, or in the case of the subject of this lecture, even photochemistry, to the study of entire ecosystems.
Enteric Contamination Of An Urban Karstified Carbonate Aquifer: The Double Springs Drainage Basin, Bowling Green, Kentucky, Geary Schindel
Enteric Contamination Of An Urban Karstified Carbonate Aquifer: The Double Springs Drainage Basin, Bowling Green, Kentucky, Geary Schindel
Masters Theses & Specialist Projects
Biological and chemical analysis of water samples, collected from surface and subsurface streams was preformed to determine the quantity and biologic sources of enteric contamination in the Double Springs Groundwater Basin, an urban karstified carbonate aquifer under Bowling Green, Kentucky. Major flow paths, drainage basin boundaries and geologic/hydrologic relationships were identified for the basin. Analysis of biologic contaminates using fecal coliform /fecal streptococcus counts and ratios were conducted for baseflow and storm events and related to the Double Springs hydrographs. Analysis was also conducted to determine the source of sulfides responsible for the growth of sulfur fixing bacteria in the …
Impacts Of Abandoned Surface Coal-Mined Lands On The Local Population In Southwestern Indiana, Fenner O. Omolo
Impacts Of Abandoned Surface Coal-Mined Lands On The Local Population In Southwestern Indiana, Fenner O. Omolo
All-Inclusive List of Electronic Theses and Dissertations
This study was involved with direct impact of abandoned surface coal-mined lands on the local population in southwestern Indiana. Five problem areas studied have a total of 237 acres of gob, 71 acres of slurry, 22 acres of spoil areas, 10 dangerous high walls, 13 acres of haul road, and 4 acres of tipple. Only three problem areas have postreclamation plans, while the rest do not. Pollution of lake #29 in Green Sullivan LK #29 problem area in Sullivan County and the lake west of Centenary in Electric Shovel problem area in Vermillion County has been caused by sediment and …
Water Current, Volume 16, No. 3, May/June 1984
Water Current, Volume 16, No. 3, May/June 1984
Water Current Newsletter
Director's Report
FY 1984 Research Program
Water Use Efficiency Task Force Report
1984 Nebraska Water Conference Tabloid
1984 Irrigation Tour
1984 Water Resources Seminar Proceedings
Research Review: Scheduling Procedures with Limited Water for Improved Water Use Efficiency for Corn and Soybeans