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Filtering by: Creator Parker, Andrew M. Remove constraint Creator: Parker, Andrew M. Committee Member Meigs, Andrew Remove constraint Committee Member: Meigs, Andrew

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  • Heat Flow along the Southern Costa Rica Margin : Insights on the Updip Limit of Seismicity

    Creator:
    Hass, Bridget M.
    Abstract:
    Heat flow analysis of the Costa Rica convergent margin is carried out for seven core sites drilled during Integrated Ocean Drilling Program (IODP) Expeditions 334 and 344 as part of the Costa Rica Seismogenesis Project (CRISP). These expeditions were designed to develop a better understanding of erosional subduction zones. Heat...
    Resource Type:
    Masters Thesis
    Full Text:
    OF THE THESIS OF Bridget M. Hass for the degree of Master of Science in Ocean, Earth, and

  • Distinguishing between live and dead standing tree biomass on the North Rim of Grand Canyon National Park, USA using small-footprint lidar data

    Creator:
    Kim, YunSuk
    Abstract:
    Accurate estimation of live and dead biomass in forested ecosystems is important for studies of carbon dynamics, biodiversity, and wildfire behavior, and for forest management. Lidar remote sensing has been used successfully to estimate live biomass, but studies focusing on dead biomass are rare. We used lidar data, in conjunction...
    Resource Type:
    Masters Thesis
    Full Text:
    distribution for live trees, and for dead trees (height ≥ 3 m). ...................10 3. Example of plot

  • Groundwater Flow Modeling at Santa Susana Field Laboratory

    Creator:
    Gardner, Gerrit T.
    Abstract:
    Understanding groundwater flow in faulted and fractured rock is an important frontier in the field of environmental remediation and in the management of water resources. One example of a site where this is particularly evident is the Santa Susana Field Laboratory (SSFL) in Ventura County, CA where environmental remediation activities...
    Resource Type:
    Masters Thesis
    Full Text:
    province. The area has high relief with a maximum elevation of ~2,000 ft (~600 m) asl, and ~1,100 ft (330

  • Low-frequency Teleseismic and Infrasound Arrivals along the Dense Corvallis Nodal Array

    Creator:
    Way, Rachel
    Abstract:
    The dense Corvallis array deployed in January of 2022 aided in the high-resolution study of local geology. This array was made of 177 SmartSolo 3-component 5 Hz geophones around Corvallis, with a 93 geophone profile going west towards Bald Hill for approximately 5 km at an average of 64 m...
    Resource Type:
    Honors College Thesis
    Full Text:
    at an average of 64 m apart. The Western Profile of the array crossed the inferred location of the

  • Seismotectonics of the Himalayas and the Tibetan Plateau : moment tensoranalysis of regional seismograms

    Creator:
    Baur, Jan R.
    Abstract:
    This thesis presents a detailed seismotectonic investigation of the Himalayan region and the Tibetan plateau as part of project HiCLIMB to explore the state of stress and the kinematics of the world’s largest continental collision zone. Using full regional waveforms for moment tensor inversion, source parameters for 107 earthquakes were...
    Resource Type:
    Masters Thesis
    Full Text:
    closely coincide with the 3500 m topography contour. These earthquakes can be associated with elastic

  • Lidar-based Post-earthquake Pavement Damage Classification System

    Creator:
    Shakya, Suzanna
    Abstract:
    3D laser scanning has been used extensively in engineering reconnaissance surveys to capture perishable data in an efficient, reliable, and precise manner. Many insights on damage can be obtained from the data through various methods of post-processing; however, many of these techniques are often labor intensive. This delay reduces the...
    Resource Type:
    Masters Thesis
    Full Text:
    and Dr. Andrew Meigs for always providing me with valuable advice, support and taking the time to

  • Olivine and plagioclase-hosted melt inclusions and their application to determining parental arc magmas

    Creator:
    Kohut, Edward John
    Abstract:
    Three broadly interrelated problems of critical significance to the proper interpretation of melt inclusion (MI) data are addressed in this thesis. The first issue, the petrogenesis of anorthitic plagioclase phenocrysts in MORB lavas, has relevance due to the presence of numerous MI in many high-An feldspars. This problem was addressed...
    Resource Type:
    Dissertation
    Full Text:
    thank Anita Grunder and Andrew Meigs for serving on my committee and providing outstanding courses and

  • Dam removals and downstream bar-pool morphology

    Creator:
    Zunka, John Page Purnell
    Abstract:
    Bar-pool morphology in rivers can provide vital habitat to aquatic species, notably salmonids, which require gravel riffles to bury eggs and pools for hydraulic and cold-water refuge. In some cases, the erosion and subsequent deposition of coarse sediment downstream of a dam removal can modify habitat by inundating bar-pool structure,...
    Resource Type:
    Masters Thesis
    Full Text:
    ). In the United States, it is estimated that over 70% of the 77,000 big dams (over 7.6 m in height

  • Patterns and processes of sediment transport following sediment-filled dam removal in gravel bed rivers

    Creator:
    Stewart, Gregory B.
    Abstract:
    Dam removal is increasingly viewed as a river restoration tool because dams affect so many aspects of river hydrology, geomorphology, and ecology; but removal also has impacts. When a dam is removed, sediment accumulated over a dam’s lifetime may be transported downstream; and the timing, fate and consequences of this...
    Resource Type:
    Dissertation
    Full Text:
    , with size classes ranging from silt and clay to large boulders (10-6-100 m), and the release of stored

  • Heat flow results from plate boundary observatory boreholes in California

    Creator:
    McDonald, Kyle Joseph
    Abstract:
    An integral component to understanding lithospheric rheology, fault mechanics, and geodynamic processes is knowledge of the subsurface thermal regime. This study presents thermal data from 26 new borehole sites drilled during the installation of borehole strain meters as part of the Plate Boundary Observatory (PBO). These data extends existing coverage...
    Resource Type:
    Masters Thesis
    Full Text:
    from 97 to 245 m. Measured temperatures were corrected for the 3- dimensional effects of terrain and