scholarly journals Preliminary study of uranium in Pennsylvanian and lower Permian strata in the Powder River Basin, Wyoming and Montana, and the Northern Great Plains

1977 ◽  
Author(s):  
J.F. Jr. Dunagan ◽  
K.A. Kadish
Keyword(s):  
River Basin ◽  
Great Plains ◽  
Powder River Basin ◽  
Northern Great Plains ◽  
Lower Permian ◽  
Preliminary Study

scholarly journals Transport of Atmospheric Moisture during Three Extreme Rainfall Events over the Mackenzie River Basin

2005 ◽  
Vol 6 (4) ◽  
pp. 423-440 ◽  
Author(s):  
Julian C. Brimelow ◽  
Gerhard W. Reuter
Keyword(s):  
Gulf Of Mexico ◽  
River Basin ◽  
Great Plains ◽  
Summer Rainfall ◽  
Northern Great Plains ◽  
Extreme Rainfall Events ◽  
Rainfall Events ◽  
Low Level ◽  
Mackenzie River Basin ◽  
Mackenzie River

Abstract Lagrangian trajectories were computed for three extreme summer rainfall events (with rainfall exceeding 100 mm) over the southern Mackenzie River basin to test the hypothesis that the low-level moisture feeding these rainstorms can be traced back to the Gulf of Mexico. The three-dimensional trajectories were computed using the Hybrid Single-Particle Lagrangian Integrated Trajectory model (HYSPLIT). For all three events, parcel trajectories were identified that originated near the Gulf of Mexico and terminated over the southern Mackenzie River basin. Specifically, the transport of low-level moisture was found to occur along either quasi-continuous or stepwise trajectories. The time required to complete the journey varied between 6 and 10 days. Closer examination of the data suggests that, for the three cases in question, the transport of modified Gulf of Mexico moisture to high latitudes was realized when the northward extension of the Great Plains low-level jet to the Dakotas occurred in synch with rapid cyclogenesis over Alberta, Canada. In this way, modified low-level moisture from the Gulf of Mexico arrived over the northern Great Plains at the same time as a strong southerly flow developed over the Dakotas and Saskatchewan, Canada, in advance of the deepening cutoff low over Alberta. This moist air was then transported northward over Saskatchewan and finally westward over the southern Mackenzie River basin, where strong ascent occurred.

scholarly journals Wyoming’s Ucross Ranch: Its Birds, History, and Natural Environment

2019 ◽  
pp. 1-85
Author(s):  
Jacqueline Canterbury ◽  
Paul Johnsgard
Keyword(s):  
River Basin ◽  
Great Plains ◽  
Natural Environment ◽  
Habitat Type ◽  
Bird Species ◽  
Powder River Basin ◽  
Seasonal Abundance ◽  
Sagebrush Steppe ◽  
History Of ◽  
Environmental Adaptations

This book profiles 60 of the most abundant, characteristic, and interesting birds that have been regularly reported from the Ucross Ranch and the adjacent Powder River Basin. The 20,000-acre Ucross Ranch lies on the western edge of the Powder River Basin of northeastern Wyoming. Ucross is a textbook example of the prairie grassland/shrubland habitat type referred to as the sagebrush steppe, a landscape that is an icon of Wyoming’s vast open spaces. We focus especially on those species that occur year-round or are present as breeders during the summer months, and we place emphasis on a unique group of sagebrush steppe–adapted birds. We provide information on each profiled species’ identification, voice, status, and habitats. “Identification” describes its important visual characteristics (field marks), “voice” provides information on its songs and calls, “status” indicates its relative regional and seasonal abundance, and “habitats and ecology” provides a brief description of its behavior and environmental adaptations. Each species profile also has a calendar of average weekly seasonal occurrence based on long-term regional records. An introductory essay describes the early history of the Ucross Ranch, which is followed by essays on the natural environment and habitats of the ranch, including the characteristic sagebrush steppe and its associated bird species. The 22,000-word text is supplemented with 60 color bird photographs, a map of the vegetation communities in the Great Plains, and a Bird Checklist of the Ucross Ranch.

Split Estate and Wyoming’s Orphaned Well Crisis: The Case of Coalbed Methane Reclamation in the Powder River Basin, Wyoming

2017 ◽  
Vol 1 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Kathryn Bills Walsh
Keyword(s):  
Natural Gas ◽  
River Basin ◽  
Technological Innovation ◽  
Coalbed Methane ◽  
Powder River Basin ◽  
Gas Wells ◽  
Mineral Rights ◽  
Split Estate ◽  
Legal Condition

This case presents the stakeholder conflicts that emerge during the development and subsequent reclamation of abandoned natural gas wells in Wyoming where split estate, or the separation of surface land and mineral rights from one another, occurs. From 1998 to 2008, the Powder River Basin of northeastern Wyoming experienced an energy boom as a result of technological innovation that enabled the extraction of coalbed methane (CBM). The boom resulted in over 16,000 wells being drilled in this 20,000 square-mile region in a single decade. As of May 2017, 4,149 natural gas wells now sit orphaned in Wyoming as a result of industry bankruptcy and abandonment. The current orphaned wells crisis was partially enabled by the patchwork of surface and mineral ownership in Wyoming that is a result of a legal condition referred to as split estate. As the CBM boom unfolded in this landscape and then began to wane, challenges emerged most notably surrounding stalled reclamation activities. This case illuminates these challenges highlighting two instances when split estate contributed to issues between landowners and industry operators which escalated to litigation.

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