scholarly journals Collaborative Modeling to Assess Drought Resiliency of Snow‐Fed River Dependent Communities in the Western United States: A Case Study in the Truckee‐Carson River System

Water ◽  
2017 ◽  
Vol 9 (2) ◽  
pp. 99 ◽  
Author(s):  
Loretta Singletary ◽  
Kelley Sterle
Keyword(s):  
United States ◽  
River System ◽  
Western United States ◽  
Collaborative Modeling ◽  
Carson River

Fragility curves for toppling of railroad locomotives

2020 ◽  
Vol 36 (4) ◽  
pp. 1623-1644
Author(s):  
Bruce F Maison
Keyword(s):  
United States ◽  
Size Effect ◽  
Case Studies ◽  
Fragility Curves ◽  
Western United States ◽  
Passenger Cars ◽  
Strong Earthquakes ◽  
Ground Shaking ◽  
Seismic Regions

Three locomotives that overturned (toppled) during strong earthquakes (>6.5M) are used as computer analytical case studies. The locomotives were at rest or traveling very slowly at the time of the earthquakes. Fragility curves are presented relating ground shaking intensity to likelihood of toppling. Supplemental studies determine the influence of various parameters, including track gauge, damping, sway-roll period, and size effect. The shaking intensities necessary for standard gauge (56.5 in) locomotives to topple are much greater than the median intensities of 2475-year earthquakes representative of those in high seismic regions of the western United States. A general conclusion is that standard gauge locomotives at rest are not susceptible to toppling in such earthquakes (≪50% chance). This can be expected to be the case as well for freight and passenger cars having sizes and slenderness similar to the case study locomotives. The study also provides insights about the toppling fragility of other large unanchored objects having similar proportions.

Water and Food in the American West

2018 ◽  
pp. 320-343
Author(s):  
Josué Medellín-Azuara ◽  
Jay Lund ◽  
Daniel A. Sumner
Keyword(s):  
United States ◽  
Global Economy ◽  
American West ◽  
Short Review ◽  
The United States ◽  
Western United States ◽  
Water Shortages ◽  
Groundwater Overdraft ◽  
Wide Range

The American West, the last region in the continental United States to be developed for extensive agriculture, is characterized by a wide range of biomes including arid, and semiarid regions, forest, and coastline. In its less water-rich places, this has forced the development of water supply infrastructure for agriculture and cities. The American West rapidly became an agricultural powerhouse to the United States and a major exporter of agricultural commodities in global economy. This chapter reviews agriculture in the western United States, followed by a short review of major western water issues for agriculture, including surface water shortages from drought and persistent groundwater overdraft. The California 2012–2016 drought is used as a case study to identify lessons for future food and fiber production in California, the western United States, and globally.

Social Media in Crisis

2019 ◽  
pp. 808-825
Author(s):  
Lauren Bacon Brengarth ◽  
Edin Mujkic ◽  
Meg A. Millar
Keyword(s):  
United States ◽  
Social Media ◽  
Social System ◽  
Opinion Leaders ◽  
Western United States ◽  
Traditional Media ◽  
Fire Event ◽  
The Social ◽  
Social Media Tools

This case study examines how social media tools were used by a Nonprofit Organization (NPO) to raise money during a catastrophic fire in the Western United States. The fire claimed over 18,000 acres of forestland, nearly 350 homes, and 2 human lives. When it occurred, it was the most catastrophic fire event to hit this community. This case illuminates specific ways in which social media provided the key tools that enabled the creation of this NPO, the sale of hundreds of thousands of tee shirts in one month, and ultimately dollars donated to aid the victims of the fire. This case is unique because it is the story of an organization that was created overnight because individuals in the organization's social system rapidly evaluated and adopted their innovation. Additionally, opinion leaders (particularly those in traditional media) within the social system aided the NPO in rapidly establishing legitimacy with its followers.

Social Media in Crisis

2015 ◽  
pp. 1-23 ◽  
Author(s):  
Lauren Bacon Brengarth ◽  
Edin Mujkic ◽  
Meg A. Millar
Keyword(s):  
United States ◽  
Social Media ◽  
Social System ◽  
Opinion Leaders ◽  
Western United States ◽  
Traditional Media ◽  
Fire Event ◽  
The Social ◽  
Social Media Tools

This case study examines how social media tools were used by a Nonprofit Organization (NPO) to raise money during a catastrophic fire in the Western United States. The fire claimed over 18,000 acres of forestland, nearly 350 homes, and 2 human lives. When it occurred, it was the most catastrophic fire event to hit this community. This case illuminates specific ways in which social media provided the key tools that enabled the creation of this NPO, the sale of hundreds of thousands of tee shirts in one month, and ultimately dollars donated to aid the victims of the fire. This case is unique because it is the story of an organization that was created overnight because individuals in the organization's social system rapidly evaluated and adopted their innovation. Additionally, opinion leaders (particularly those in traditional media) within the social system aided the NPO in rapidly establishing legitimacy with its followers.

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