8 research outputs found

    Probing the in situ Elastic Nonlinearity of Rocks with Earth Tides and Seismic Noise

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    Heterogeneous materials such as rocks, concrete, and granular materials exhibit a strong elastic nonlinearity. The sensitivity of the elastic nonlinearity to the applied stress and pore pressure in principle allows the use of seismic waves for remote observations of stress or pore pressure changes. Yet the nonlinearity of rocks is difficult to quantify in situ as active deformation tests are not possible in the field. We investigate the elastic nonlinearity in a fully natural experiment using the ambient seismic noise of a single seismic station to sense changes of the seismic velocity in the subsurface reaching 0.026% in response to the minute deformation caused by various constituents of the tidal forces exerted by the Sun and Moon

    Creating a Vision for Mount St. Joseph University’s Next Generation Library

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    Creating a Vision for Mount St. Joseph University’s Next Generation Library A. Foundation for MSJU’s Next Generation Library: A person’s value will be not only be what one knows, but whether one knows where to find the information one needs, and how one connects to solve society’s problems. B. Articulating the Vision: 1. Sketches & Stories: How successful informational networks in other organizations may be applied. 2. Culture Today/Culture Tomorrow: Defining today’s culture, ideal future culture and gap analysis to initiate cultural change. 3. Success Measures: What does success look like and how can it be measured? 4. Guiding Principles: Defining the five most critical attributes to achieve the next generation library. 5. What is the next generation library? “How will the next generation library need to evolve to support the constantly changing needs of its users? C. Translating the Vision: Collaborating to translate the vision to physical space

    Probing the in situ

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    SLAVERY: ANNUAL BIBLIOGRAPHICAL SUPPLEMENT (2005)

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