Earth Sciences Commons^™

Composite Section Of Outcropping Rocks Along The Missouri River, R. R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

1991 Nebraska Water Conference, The Rivers Of Nebraska: Character, Conflicts And Cooperation, Ray Bentall

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Development Of A Land Cover Characteristics Data Base For The Conterminous U.S., Thomas R. Loveland, James W. Merchant, Donald O. Ohlen, Jesslyn F. Brown

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Thurston County Test Hole Logs, Raymond R. Burchett, Frank A. Smith

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

A Report On Black-Tailed Prairie Dogs In Nebraska, Their Biology, Behavior, Ecology, Management, And Responses To A Visual Barrier Fence, Nancy S. Foster

School of Natural Resources: Dissertations, Theses, and Student Research

I examined the effects of a visual barrier fence, which had a see-through visibility of 600/0, on the foraging, vigilance, and aggressive behaviors of adult female black-tailed prairie dogs from June through August 1990 in central Nebraska. I also examined changes in their home ranges and use of an area in response to this fence. Prairie dogs prefer an open view of their surroundings. Therefore, I expected animals near a visual barrier to spend more time in vigilance and aggression, and less time foraging. Adult female prairie dogs exposed to the visual barrier devoted more time to foraging and less …

Groundwater Levels In Nebraska, 1989, Michael J. Ellis, Gregory V. Steele, Perry B. Wigley

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Oil And Gas Developments In North Mid-Continent In 1989., Shirley E. Paul, Bruce W. Netzler, Raymond R. Burchett, Paul H. Roberts, Robert Peters, Donivan L. Gordon, John H. Mossler

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Alternative Usages Of Wetlands Other Than Conventional Farming In Iowa, Kansas, Missouri, And Nebraska, Ellen Leventhal, Hubert H. Humphrey

United States Environmental Protection Agency: Publications

Conversion of wetlands in Iowa, Kansas, Missouri, and Nebraska into agricultural dry lands in the past several decades has occurred as a means to obtain profit from what landowners would otherwise consider unprofitable land. This activity has resulted in substantial losses of wetlands valued for their unique ability to mitigate flood and storm damage, control erosion, discharge and recharge groundwater, improve water quality, and support a wide diversity of fish, wildlife, and vegetation.

Utilizing fish, wildlife, and vegetation from wetlands for profit is a way for wetland owners to recognize the value their wetlands add to their property. Landowners then …

Postulated Evolution Of Platte River And Related Drainages, V. L. Souders, J. B. Swinehart, V. H. Dreeszen

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Recent Secular Variations In The Extent Of Northern Hemisphere Snow Cover, David A. Robinson, Kenneth F. Dewey

Department of Earth and Atmospheric Sciences: Faculty Publications

Northern hemisphere snow cover during 1988 and 1989 was at its lowest extent since the advent of reliable satellite snow-cover monitoring 1972; running some 8-10% below the eighteen-year annual mean of 25.7 million km² . Monthly minima for the period of record occurred six times during these two years. In general, the last nine years of the satellite record had less extensive cover than the 1972-80 interval. Negative anomalies during the 1980s were largest over Eurasia in all seasons, and in the Spring over North America. Hemispheric seasonal means for the most recent nine years were 3.7% to 8.4% …

Interactions Between Plains Pocket Gophers And Two Varieties Of Dryland Alfalfa, James C. Luchsinger

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.

Evaluation Of Monofilament Lines To Prevent Damage By Birds, Danilo A. Aguero

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.

Bazile Triangle Groundwater Quality Study, David C. Gosselin

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

The October 17, 1989, Loma Prieta, California, Earthquake And Its Aftershocks: Geometry Of The Sequence From High-Resolution Locations, Lynn D. Dietz, William L. Ellsworth

United States Geological Survey: Staff Publications

Hypocenters of the Loma Prieta sequence form a dipping zone that rises from the mainshock hypocenter and is parallel to the mainshock nodal plane. Most aftershocks cluster around the perimeter of the zone, surrounding a relatively aseismic center which approximates the region of mainshock rapture. At its southeastern end, the dipping aftershock zone warps into a vertical surface that corresponds to the San Andreas fault. In the central and northwestern parts of the zone at depths above -10 km, the aftershocks define numerous disjoint fault structures. The large component of reverse-slip observed in this event agrees with a simple model …

Coseismic Stress Changes Induced By The 1989 Loma Prieta, California Earthquake, Andrew J. Michael, William L. Ellsworth, David H. Oppenheimer

United States Geological Survey: Staff Publications

Earthquake focal mechanisms from before and after the 1989 Loma Prieta, California earthquake are used to infer the coseismic stress change. Before the main shock, most earthquakes correspond to right lateral slip on planes sub-parallel to the San Andreas fault, and imply a generally N-S most compressionsal stress axis anda vertical intermediate stress axis. Aftershocks within the main shock rupture zone, however, display almost every style and orientation of faulting, implying an extremely heterogeneous stress field. This suggests that the main shock relieved most, if not all, of the shear stress acting on its fault plane. Aftershocks that lie on …

Annual Installation Of Irrigation Wells In Nebraska Through 1989, Conservation Survey Division

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Richardson County Test Hole Logs, Raymond R. Burchett, Frank A. Smith

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Earthquakes In Nebraska, Second Edition (Expanded), R. R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

An earthquake is the result of an adjustment of the surface of the earth caused by a release of energy in the earth's crust. Faulting is one of many causes of earthquakes.

Annual Departures From Average Annual Precipitation In Nebraska, 1850-1989, Conservation And Survey Division

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Location Of Registered Irrigation Wells In Nebraska As Of 1990.

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Volcanic Ash Deposits In Nebraska, R. R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Topographic Maps, 7.5-Minute Series, R. R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Nebraska Natural Resource District Boundaries

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Nebraska Map Of Counties, Conservation Survey Division

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Annual Report Of Nebraska-1990, Karl E. Starch, Raymond R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Groundwater Levels In Nebraska, 1989, Michael J. Ellis, Gregory V. Steele, Perry B. Wigley

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Diatomaceous Earth Deposits In Nebraska, R. R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Gypsum Deposits In Nebraska, R. R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Limestone Deposits In Nebraska, R. R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Topographic Maps, 1 X 2 Degree Series, R. R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.