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Physical Sciences and Mathematics Commons

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Articles 1 - 7 of 7

Full-Text Articles in Physical Sciences and Mathematics

Urban Crow Roosts - A Nationwide Phenomenon?, W. Paul Gorenzel, Terrell P. Salmon, Gary D. Simmons, Bob Barkhouse, Mark P. Quisenberry Oct 2000

Urban Crow Roosts - A Nationwide Phenomenon?, W. Paul Gorenzel, Terrell P. Salmon, Gary D. Simmons, Bob Barkhouse, Mark P. Quisenberry

Wildlife Damage Management Conference Proceedings

We conducted surveys of federal officials nationwide and of local officials in California to determine historical and temporal aspects, location, size, and control of American crow (Corvus brachyrhynchos) urban roosts. The national survey consisted of a 2-page questionnaire sent via email to United States Department of Agriculture Wildlife Services state directors representing the lower 48 states. The California survey consisted of a 3-page questionnaire mailed by the League of California Cities to 473 towns and cities and an email inquiry sent to Agriculture Commissioners in 29 counties. In the national survey respondents in 27 of 39 states identified 86 urban …


Protecting Instream Flows In Prior Appropriation States: Legal And Policy Issues, Janet C. Neuman Jun 2000

Protecting Instream Flows In Prior Appropriation States: Legal And Policy Issues, Janet C. Neuman

Water and Growth in the West (Summer Conference, June 7-9)

17 pages.


The Water Development-Growth Relationship: Case Studies, Edward F. Harvey Jun 2000

The Water Development-Growth Relationship: Case Studies, Edward F. Harvey

Water and Growth in the West (Summer Conference, June 7-9)

7 pages.


Municipal Demands As The Stimulus For Innovation: Tales From The Lower Colorado River Basin, Jerome C. Muys Jun 2000

Municipal Demands As The Stimulus For Innovation: Tales From The Lower Colorado River Basin, Jerome C. Muys

Water and Growth in the West (Summer Conference, June 7-9)

17 pages.


Water, Growth And The Endangered Species Act, Holly Doremus Jun 2000

Water, Growth And The Endangered Species Act, Holly Doremus

Water and Growth in the West (Summer Conference, June 7-9)

24 pages.


Present‐Day Motion Of The Sierra Nevada Block And Some Tectonic Implications For The Basin And Range Province, North American Cordillera, Timothy H. Dixon, M. Meghan Miller, Frederic Farina, Hongzhi Wang, Daniel Johnson Feb 2000

Present‐Day Motion Of The Sierra Nevada Block And Some Tectonic Implications For The Basin And Range Province, North American Cordillera, Timothy H. Dixon, M. Meghan Miller, Frederic Farina, Hongzhi Wang, Daniel Johnson

All Faculty Scholarship for the College of the Sciences

Global Positioning System (GPS) data from five sites on the stable interior of the Sierra Nevada block are inverted to describe its angular velocity relative to stable North America. The velocity data for the five sites fit the rigid block model with rms misfits of 0.3 mm/yr (north) and 0.8 mm/yr (east), smaller than independently estimated data uncertainty, indicating that the rigid block model is appropriate. The new Euler vector, 17.0°N, 137.3°W, rotation rate 0.28 degrees per million years, predicts that the block is translating to the northwest, nearly parallel to the plate motion direction, at 13–14 mm/yr, faster than …


Analysis Of Deformation Data At Parkfield, California: Detection Of A Long-Term Strain Transient, Stephen S. Gao, Paul G. Silver, Alan T. Linde Feb 2000

Analysis Of Deformation Data At Parkfield, California: Detection Of A Long-Term Strain Transient, Stephen S. Gao, Paul G. Silver, Alan T. Linde

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

Analysis of more than a decade of high-quality data, particularly those from the two-color electronic distance meter (EDM), in the Parkfield, California, area reveals a significant transient in slip rate along the San Andreas Fault. This transient consists of an increase in fault slip rate of 3.3 ± 0.9 mm/yr during 1993.0 to 1998.0. The most reliable fault creep instruments show a comparable increase in slip rate, suggesting that the deformation is localized to the fault which breaks the surface. There was also an increase in precipitation around 1993. It is unlikely, however, that this anomaly is due directly to …