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  • Evaluating the effectiveness of illuminated and shadowed contour lines

    Creator:
    Eynard, James D.
    Abstract:
    Illuminated contour lines, where line width and color are varied based on an angle of illumination, date back to the mid-nineteenth century, but their effectiveness compared to conventional contour lines has not been fully examined. Currently, illuminated contour lines are not widely used in computer-based cartography because they are not...
    Resource Type:
    Masters Thesis
    Full Text:
    lines are not widely used in computer-based cartography because they are not included in most GIS and

  • Automated Layout of Origin-destination Flow Maps : U.S. County-to-county Migration 2009-2013

    Creator:
    Stephen, Daniel M.
    Abstract:
    Visualizing large movement datasets with flow maps is difficult because overlapping flows create significant graphical conflicts that make accurate interpretation difficult or impossible. Interactive flow mapping applications allow users to explore large movement datasets by automatically generating flow maps from subsets of the data in response to queries by the...
    Resource Type:
    Masters Thesis
    Full Text:
    OSU Cartography and Geovisualization group for their support and friendship throughout this process

  • A three-dimensional mapping of the ocean based on environmental data

    Creator:
    Wright, Dawn J.
    Abstract:
    The existence, sources, distribution, circulation, and physicochemical nature of macroscale oceanic water bodies have long been a focus of oceanographic inquiry. Building on that work, this paper describes an objectively derived and globally comprehensive set of 37 distinct volumetric region units, called ecological marine units (EMUs). They are constructed on...
    Resource Type:
    Article
    Full Text:
    geographic and vertical separation 38 was observed. Twenty two of the 37 EMUs are globally or regionally

  • Swells, soundings, and sustainability, but... here be monsters

    Creator:
    Wright, Dawn J.
    Abstract:
    The Roger Revelle Commemorative Lecture Series was created by the Ocean Studies Board of the National Academies in honor of Roger Revelle to highlight the important links between ocean sciences and public policy. Dawn J. Wright, the eighteenth annual lecturer, spoke on April 28, 2017, at the Smithsonian National Museum...
    Resource Type:
    Article
    Full Text:
    information science, geospatial data science, image science, analytical cartography, and other fields that

  • Automated web-based analysis and visualization of spatiotemporal data

    Creator:
    Keon, Dylan B.
    Abstract:
    Most data are associated with a place, and many are also associated with a moment in time, a time interval, or another linked temporal component. Spatiotemporal data (i.e., data with elements of both space and time) can be used to assess movement or change over time in a particular location,...
    Resource Type:
    Dissertation
    Full Text:
    Geographic Information Science UNIX Uniplexed Information and Computing System USGS United States

  • Improving the representation of large landforms in analytical relief shading

    Creator:
    Marston, Brooke E.
    Abstract:
    Relief shading is the most common type of cartographic relief representation for print and digital maps. Manual relief shading results in informative and visually pleasing representations of terrain, but it is time consuming and expensive to produce. Current analytical relief shading can be created quickly, but the resulting maps are...
    Resource Type:
    Masters Thesis
    Full Text:
     used  in   geographic  information  systems  and  computer  graphics,  determines

  • Tillamook Bay national estuary project watershed information system

    Creator:
    Busse, Katherine M.
    Abstract:
    This report is organized into four chapters that provide background on watershed topics, GIS applications, and methodology related to development of the TBNEP Watershed Information System. The need for this product is established in Chapter two. First, the role of ecosystem management and the Tillamook Bay watershed is presented before...
    Resource Type:
    Capstone Project

  • Spatio-Temporal Analysis and Modeling in the Marine Environment : Humpback Whale Genetic Variability and Seabird Distributions in the Northeastern Pacific Ocean

    Creator:
    Dick, Dorothy Marie
    Abstract:
    The rapid decline of marine ecosystems worldwide and the failure of traditional single species management pushed for the development of ecosystem-based conservation measures such as marine protected areas (MPA) to slow the loss of marine biodiversity. One approach to MPA creation advocates targeting marine megafauna (e.g., marine mammals, seabirds, sharks,...
    Resource Type:
    Dissertation
    Full Text:
    ensure adequate protection will be in place now and as climate change progresses. This information can

  • 3D vs. conventional volcanic hazard maps : a user study at Mount Hood

    Creator:
    Preppernau, Charles A.
    Abstract:
    Volcanic hazard maps inform the public on the nature and extent of the hazards that threaten them, but these maps are often challenging for those who are not trained in map use or geology. The maps in this study focus on lahars, a dangerous, fast, and far-reaching volcanic hazard that...
    Resource Type:
    Masters Thesis
    Full Text:
    all times is a geographic and economic impossibility, volcanologists working in crisis management

  • Spatial distribution and the probability of occurrence of beluga whales (Delphinapterus leucas) in Alaskan Arctic

    Creator:
    Romeo, Lucy F.
    Abstract:
    The known distribution of beluga whales ranges from sub-Arctic to Arctic waters where they migrate in pods in response to environmental factors such as the presence of sea ice and prey. This study uses bivariate and multivariate analysis techniques to measure how environmental covariates are associated with the spatial-temporal distribution...
    Resource Type:
    Masters Thesis
    Full Text:
    global geographic range extends from arctic to subarctic waters (Shirihai and Jarrett 2006). Belugas