Geography Commons^™

Environmental Influences On Forest Fire Regime In The Greater Hinggan Mountains, Northeast China, Qian Fan, Cuizhen Wang, Dongyou Zhang, Shuying Zang

Faculty Publications

Fires are the major disturbances in the Greater Hinggan Mountains, the only boreal forest in Northeast China. A comprehensive understanding of the fire regimes and influencing environmental parameters driving them from small to large fires is critical for effective forest fire prevention and management. Assisted with satellite imagery, topographic data, and climatic records in this region, this study examines its fire regimes in terms of ignition causes, frequencies, seasonality, and burned sizes in the period of 1980–2005. We found an upward trend for fire occurrences and burned areas and an elongated fire season over the three decades. The dates of …

Spatiotemporal Identification Of Anomalies In A Wildlife Preserve, Bharadwaj Kishan, Jason Guan Jie Ong, Yanrong Zhang, Tin Seong Kam

Research Collection School Of Computing and Information Systems

The datasets released for the VAST Challenge 2017 comprise vehicle movement data captured with RFID sensors, chemical emission data from factories captured by gas sensors, and image attributes of the wildlife plant health obtained from satellites, all pertaining to a fictional wildlife preserve. Using visual analytics, a compelling hypothesis is established to link the spatiotemporal datasets to the phenomenon, where the count of a bird specimen is found to decline over a given year. Anomalies in vehicle traffic patterns are linked to proximal factory emissions, and further associated with satellite imagery that show proof of degradation in plant quality in …

The Political Cost? Religious Segregation, Peace Walls, And House Prices, John A. Mccord, Michael J. Mccord, Peadar T. Davis, Martin E. Haran, Sean Macintyre

Peace and Conflict Studies

The longstanding issue of discrimination and segregation in housing markets has enveloped housing market analysis and particularly the understanding of house price determination. Whilst the relationship of segregation in residential space is diverse and encompasses numerous taxonomies, in Northern Ireland, the high level of market segregation is compounded by the addition of tactile barriers such as Peace walls. The existence of these tactile barriers serves to physically segregate communities and have the capacity to prevent the restoration of normal community interactions and market processes. This paper attempts to quantify and measure the disamenity implications and costs of these hard structures …

Finding Water Scarcity Amid Abundance Using Human–Natural System Models, William K. Jaeger, Adell Amos, Daniel P. Bigelow, Heejun Chang, David R. Conklin, Roy Haggerty, Christian Langpap, Kathleen Moore, Philip Mote, Anne W. Nolin, Andrew J. Plantinga, Cynthia L. Schwartz, Desiree Tullos, David P. Turner

Geography Faculty Publications and Presentations

Water scarcity afflicts societies worldwide. Anticipating water shortages is vital because of water’s indispensable role in social-ecological systems. But the challenge is daunting due to heterogeneity, feedbacks, and water’s spatial-temporal sequencing throughout such systems. Regional system models with sufficient detail can help address this challenge. In our study, a detailed coupled human–natural system model of one such region identifies how climate change and socioeconomic growth will alter the availability and use of water in coming decades. Results demonstrate how water scarcity varies greatly across small distances and brief time periods, even in basins where water may be relatively abundant overall. …

Quantifying Resilience Of Multiple Ecosystem Services And Biodiversity In A Temperate Forest Landscape, Elena Cantarello, Adrian C. Newton, Phillip A. Martin, Paul M. Evans, Arjan Gosal, Melissa S. Lucash

Geography Faculty Publications and Presentations

Resilience is increasingly being considered as a new paradigm of forest management among scientists, practitioners, and policymakers. However, metrics of resilience to environmental change are lacking. Faced with novel disturbances, forests may be able to sustain existing ecosystem services and biodiversity by exhibiting resilience, or alternatively these attributes may undergo either a linear or nonlinear decline. Here we provide a novel quantitative approach for assessing forest resilience that focuses on three components of resilience, namely resistance, recovery, and net change, using a spatially explicit model of forest dynamics. Under the pulse set scenarios, we explored the resilience of nine ecosystem …

Values Mapping And Counter-Mapping In Contested Landscapes: An Olympic Peninsula (Usa) Case Study, Rebecca J. Mclain, Lee Cerveny, Kelly Biedenweg, David Banis

Geography Faculty Publications and Presentations

Indigenous peoples, local communities, and other groups can use counter-mapping to make land claims, identify areas of desired access, or convey cultural values that diverge from the dominant paradigm. While sometimes created independently, counter-maps also can be formulated during public participation mapping events sponsored by natural resource planning agencies. Public participation mapping elicits values, uses, and meanings of landscapes from diverse stakeholders, yet individuals and advocacy groups can use the mapping process as an opportunity to make visible strongly held values and viewpoints. We present three cases from the Olympic Peninsula in Washington State to illustrate how stakeholders intentionally used …

Public Transportation In The Middle East: A Study On The Sustainability And Efficacy Of Taxis In Amman And The Future Of Public Transportation, Henry Nieberg

Independent Study Project (ISP) Collection

This research aims to explore the current public transportation status in the city of Amman, Jordan. Many Middle Eastern cities in the Levant are under critical urban transformations. This is due to both the increasing investment in infrastructure from countries located mostly in the Gulf States and through the mass destruction and neglect from internal conflicts. Amman is the only city in the Levant Region that is growing, and with a population of roughly 4 million, there is no adequate public transportation system in the city. This research includes a review of literature in urban studies and transportation, drawing on …

Land Insecurity In Gulu, Uganda: A Clash Between Culture And Capitalism, Zachary Slotkin

Independent Study Project (ISP) Collection

This paper presents the causes and consequences of land insecurity in Gulu, Uganda. In order to address this important and often sensitive issue, the paper analyzes the role of the Lord’s Resistance Army (LRA) insurgency and the government’s policy of forced encampment during the insurgency in contributing to land insecurity, causing widespread displacement among former internally displaced persons (IDPs). It further explores the importance of land ownership in providing economic productivity to rural landowners, as well as the nature of customary land tenure in Acholi culture and the government’s efforts to privatize communal land, to give a background on the …

Making A Case For Social Innovation As A Structural Counterpart To Public Participation In Regional Planning, Manju A. Adikesavan

Dissertations, Theses, and Capstone Projects

Multi-locational living – working, shopping, playing, learning and commuting across administrative and, sometimes even political boundaries is an essential aspect of metropolitan living. Although it is anticipated that everyday experiences of the physical, social and economic inter-connectedness between urban communities and peri-urban hinterlands would automatically engender a regional outlook in planning and governance, it is currently not the case. In the New York City region, a lived regional experience does not translate into support for a regional governance structure.

While strong legislative support has ensured the public its rightful place within metropolitan regional planning, it has regrettably bred a procedural …

A Modified Normalized Difference Impervious Surface Index (Mndisi) For Automatic Urban Mapping From Landsat Imagery, Zhongchang Sun, Cuizhen Wang, Huadong Guo, Ranran Shang

Faculty Publications

Impervious surface area (ISA) is a key factor for monitoring urban environment and land development. Automatic mapping of impervious surfaces has attracted growing attention in recent years. Spectral built-up indices are considered promising to map ISA distributions due to their easy, parameter-free implementations. This study explores the potentials of impervious surface indices for ISA mapping from Landsat imagery using a case study area in Boston, USA. A modified normalized difference impervious surface index (MNDISI) is proposed, and a Gaussian-based automatic threshold selection method is used to identify the optimal MNDISI threshold for delineating impervious surfaces from background features. To evaluate …

Making Software, Making Regions: Labor Market Dualization, Segmentation, And Feminization In Austin, Portland And Seattle, Dillon Mahmoudi

Dissertations and Theses

Through mixed-methods research, this dissertation details the regionally variegated and place-specific software production processes in three second-tier US software regions. I focus on the relationship between different industrial, firm, and worker production configurations and broad-based economic development, prosperity, and inequality. I develop four main empirical findings.

First, I argue for a periodization of software production that tracks with changes in software laboring activity, software technologies, and wage-employment relationships. Through a GIS-based method, I use the IPUMS-USA to extensively measure the amount and type of software labor in industries across the US between 1970 and 2015. I map the uneven geography …

Detecting Change In Rainstorm Properties From 1977-2016 And Associated Future Flood Risks In Portland, Oregon, Alexis Kirsten Cooley

Dissertations and Theses

In response to increased greenhouse gases and global temperatures, changes to the hydrologic cycle are projected to occur and new precipitation characteristics are expected to emerge. The study of these characteristics is facilitated by common indices to measure precipitation and temperature developed by the Expert Team on Climate Change Detection and Indices (ETCCDI). These indices can be used to describe the likely consequences of climate change such as increased daily precipitation intensity (SDII) and heavier rainfall events (R95p). This study calculates a subset of these indices from observed and modelled precipitation data in Portland, Oregon. Five rainfall gages from a …

Landsat Sentinel Registration Source Codes: Linux, Lin Yan, David P. Roy

Landsat Sentinel Registration Source Codes

• SSReg is open-source software (coded in C) for precise automatic registration of two Sentinel-2 L1C acquisitions including all 10 m, 20 m and 60 m bands.
• Version 1.1 is a Linux version and includes source codes, manual and test data.
• Major functionalities of the software:
  • Image registration supporting translation, affine and 2^nd order polynomial transformations.
  • Classic implementation of least-squares matching (LSM) with up to 0.02 pixel matching accuracy on medium-spatial-resolution optical-wavelength remote sensing images, including Landsat and Sentinel 2.
  • Implementation of the LSM-based depth-first mismatch detection.
• The development and release of this open-source software is funded by NASA grant …

Desert Pool {If Every Desert Was Once A Sea}, Karen Miranda Abel

The Goose

Desert Pool {If every desert was once a sea} is a site-specific art project by Canadian artist Karen Miranda Abel completed in 2016 while artist-in-residence at Joya: arte + ecología, an arts-led research centre situated in an alpine desert within a national park in southern Spain. The elemental installation represents an envisioning of the ancient sea that occupied the Sierra de María-Los Vélez Natural Park millions of years before the current desert ecology, a time when its highest mountain peaks may have been islands.

Wilderness On The Page, John Steffler

The Goose

This essay explores the role that literature can play in a rethinking of Western culture's relationship with the natural environment.

Gis Spatial Analysis Of Arctic Settlement Patterns: A Case Study In Northwest Alaska, Justin Andrew Junge

Dissertations and Theses

In northwest Alaska, archaeologists hypothesize that environmental variability was a major factor in both growing coastal population density, with large aggregated villages and large houses, between 1000 and 500 years ago (ya), and subsequent decreasing population density between 500 ya and the contact era. After 500 ya people are thought to have dispersed to smaller settlements with smaller house sizes in coastal areas, and perhaps, upriver. This settlement pattern was identified through research at four site locations over 30 years ago. The changing geographic distribution of sites, associated settlement size, and house size has not been examined in detail. A …

Southern Annular Mode Drives Multicentury Wildfire Activity In Southern South America, Andrés Holz, Juan Paritsis, Ignacio A. Mundo, Thomas T. Veblen, Thomas Kitzberger, Grant J. Williamson, Ezequiel Aráoz, Carlos Bustos-Schindler, Mauro E. González, H. Ricardo Grau, Juan M. Quezada

Geography Faculty Publications and Presentations

The Southern Annular Mode (SAM) is the main driver of climate variability at mid to high latitudes in the Southern Hemisphere, affecting wildfire activity, which in turn pollutes the air and contributes to human health problems and mortality, and potentially provides strong feedback to the climate system through emissions and land cover changes. Here we report the largest Southern Hemisphere network of annually resolved tree ring fire histories, consisting of 1,767 fire-scarred trees from 97 sites (from 22 °S to 54 °S) in southern South America (SAS), to quantify the coupling of SAM and regional wildfire variability using recently created …

Review Of A Companion To The Works Of Kim Scott By Belinda Wheeler (Ed.), Jose-Carlos Redondo-Olmedilla

The Goose

A review on the book A Companion to the Works of Kim Scott edited by Belinda Wheeler.

Examination Of Sentinel-2a Multi-Spectral Instrument (Msi) Reflectance Anisotropy And The Suitability Of A General Method To Normalize Msi Reflectance To Nadir Brdf Adjusted Reflectance, David P. Roy, Jian Li, Hankui Zhang, Lin Yan Dr., Haiyan Huang, Zhongbin Li

GSCE Faculty Publications

The Sentinel-2A multi-spectral instrument (MSI) acquires multi-spectral reflective wavelength observations with directional effects due to surface reflectance anisotropy and changes in the solar and viewing geometry. Directional effects were examined by considering two ten day periods of Sentinel-2A data acquired close to the solar principal and orthogonal planes over approximately 20° × 10° of southern Africa. More than 6.6 million (January 2016) and 10.6 million (April 2016) pairs of reflectance observations sensed 3 or 7 days apart in the forward and backscatter directions in overlapping Sentinel-2A orbit swaths were considered. The Sentinel-2A data were projected into the MODIS sinusoidal projection …

Methods For Real-Time Prediction Of The Mode Of Travel Using Smartphone-Based Gps And Accelerometer Data, Bryan D. Martin, Vittorio Addona, Julian Wolfson, Gediminas Adomavicius, Yingling Fan

Faculty Publications

We propose and compare combinations of several methods for classifying transportation activity data from smartphone GPS and accelerometer sensors. We have two main objectives. First, we aim to classify our data as accurately as possible. Second, we aim to reduce the dimensionality of the data as much as possible in order to reduce the computational burden of the classification. We combine dimension reduction and classification algorithms and compare them with a metric that balances accuracy and dimensionality. In doing so, we develop a classification algorithm that accurately classifies five different modes of transportation (i.e., walking, biking, car, bus and rail) …

Land Surface Phenology And Seasonality Using Cool Earthlight In Croplands Of Eastern Africa And The Linkages To Crop Production, Woubet G. Alemu, Geoffrey M. Henebry

GSCE Faculty Publications

Across Eastern Africa, croplands cover 45 million ha. The regional economy is heavily dependent on small holder traditional rain-fed peasant agriculture (up to 90%), which is vulnerable to extreme weather events such as drought and floods that leads to food insecurity. Agricultural production in the region is moisture limited. Weather station data are scarce and access is limited, while optical satellite data are obscured by heavy clouds limiting their value to study cropland dynamics. Here, we characterized cropland dynamics in Eastern Africa for 2003–2015 using precipitation data from Tropical Rainfall Measuring Mission (TRMM) and a passive microwave dataset of land …

No. 11: Urban Food Security, Rural Bias And The Global Development Agenda, Jonathan Crush, Liam Riley

Hungry Cities Partnership

This discussion paper sets out the global, African, and South African contexts within which both urban development and food security agendas in Africa are framed. It argues that the pervasive rural bias and anti-urbanism identified in the international and regional food security agendas in the first decade of the 21st century have persisted into the second. In examining whether the last decade has brought any significant changes to the dominant discourse and its accompanying sidelining of urbanization and urban food security in policy debate and formulation, the authors find that there are promising signs for cracks in the edifice but …

Thule Iron Use In The Pre-Contact Arctic, Eileen Colligan

Dissertations, Theses, and Capstone Projects

This thesis examines the use of iron by the Thule people, a Neoeskimo culture that lived in the North American Arctic between approximately 1000 AD and 1400 ̶ 1500 AD. The study takes a pan-Arctic perspective to bring together research that has usually been done on a more-limited geographical scale. This viewpoint shows the Thule culture from a view that corresponds to their world.

The study focuses on: (1) revisions in the accepted chronology of the Thule and how these have affected the explanations for the Thule Migration from Alaska to Greenland; (2) new understandings about the iron that was …

Capture And Abandon: Social Reproduction And Informal Land Tenure In Jamaica, Rachel Goffe

Dissertations, Theses, and Capstone Projects

Capture and Abandon: Social Reproduction and Informal Land Tenure in Jamaica examines how ongoing policy development to curtail squatting is shifting state capacity away from a project of land reform and towards one of land management. Scholarship about informal settlements elsewhere tends to understand dispossession as a project of the neoliberal state. I argue that it is strategically necessary to elucidate the ways in which the production of durable but insecure access to land is not novel, but is imbricated in the historical production of a Black labor force that is self-sufficient and yet ready at hand, reproducing themselves through …

Thermal Radiation Anomalies Associated With Major Earthquakes, Dimitar Ouzounov, Sergey Pulinets, Menas Kafatos, Patrick Taylor

Mathematics, Physics, and Computer Science Faculty Articles and Research

Recent developments of remote sensing methods for Earth satellite data analysis contribute to our understanding of earthquake related thermal anomalies. It was realized that the thermal heat fluxes over areas of earthquake preparation is a result of air ionization by radon (and other gases) and consequent water vapor condensation on newly formed ions. Latent heat (LH) is released as a result of this process and leads to the formation of local thermal radiation anomalies (TRA) known as OLR (outgoing Longwave radiation, Ouzounov et al, 2007). We compare the LH energy, obtained by integrating surface latent heat flux (SLHF) over the …

Yellowing The Logarithm: How Money Solved The Problem Of Freedom, Neil S. Agarwal

Dissertations, Theses, and Capstone Projects

This dissertation is on the historical development of a co-constitutive relationship between money as the form of appearance of value and race as the form of appearance of human difference. It demonstrates this relationship through a study of experiments with monetary value in eighteenth-century British America. At a time when Bank of England notes circulated primarily among merchants and within London, colonial freeholders issued paper currencies through representative assemblies and posited a link between this enterprise and the well-being of a larger provincial community within which their bills would circulate. I show how their experiments provided a means for creole …

Walking As Ontological Shifter: Thoughts In The Key Of Life, Bibi (Silvina) Calderaro

Dissertations, Theses, and Capstone Projects

With walking as ontological shifter I pursue an alternative to the dominant modernist episteme that offers either/or onto-epistemologies of opposition and their reifying engagements. I propose this type of walking is an intentional turning towards a set of radical positions that, as integrative aesthetic and therapeutic practice, brings multiplicity and synchronicity to experience and being in an expanded sociality. This practice facilitates the conditions of possibility for recurring points of contact between the interiority perceived as ‘body’ and the exteriority perceived as ‘world.’ While making evident the self’s at once incoherence with it-self, it opens to a space beyond the …

Mapping How Culture In New York City And London Influences Respectively The Iconic Fashion Brands Of Kors And Mcqueen: A Case Study, Carol Brathwaite

Dissertations, Theses, and Capstone Projects

This thesis is an explanatory case study that applies geographic information systems (GIS) data, biographical data, and other secondary data. It includes mainly qualitative data collection and analysis; furthermore, the study examines quantitative data on the cultural events offered within each city. Overall, this case study adopts a theoretical perspective. The two individual cases (based on a multiple, holistic case-study design framework) of fashion culture in New York City and London, as per Michael Kors and Alexander McQueen respectively, represent ‘confirmatory cases or presumed replications of the same phenomenon’ (Yin 2014:59). Each describes the house’s fashion aesthetics as well as …

Aesthetic Geographies: Art, Crises, Urban Imaginaries, Erin Siodmak

Dissertations, Theses, and Capstone Projects

Performance art, with its origins in Dada, Futurism, and Surrealism, has long been a political, politicized, and transgressive form of art, posing challenges to art world institutions, political and social norms, and the nature of art itself through practitioners’ unconventional uses of the body, space, and audience/viewer participation. Much of the power of performed art comes from its performative and transitory nature: it does not simply express, represent, or communicate information. Rather, performative art forms such as installation or performance are productive of political aesthetics. Art may not necessarily intervene directly with political, legal, and legislative decisions or acts, but …

Continental-Scale Homogenization Of Residential Lawn Plant Communities, Megan M. Wheeler, Christopher Neill, Peter M. Groffman, Meghan Avolio, Neil Bettez, Jeannine Cavender-Bares, Rinku Roy Chowdhury, Lindsay Darling, J. Morgan Grove, Sharon J. Hall, James B. Heffernan, Sarah E. Hobbie, Kelli L. Larson, Jennifer L. Morse, Kristen C. Nelson, Laura A. Ogden, Jarlath O'Neil-Dunne, Diane E. Pataki, Colin Polsky, Meredith Steele, Tara L.E. Trammell

Geography

Residential lawns are highly managed ecosystems that occur in urbanized landscapes across the United States. Because they are ubiquitous, lawns are good systems in which to study the potential homogenizing effects of urban land use and management together with the continental-scale effects of climate on ecosystem structure and functioning. We hypothesized that similar homeowner preferences and management in residential areas across the United States would lead to low plant species diversity in lawns and relatively homogeneous vegetation across broad geographical regions. We also hypothesized that lawn plant species richness would increase with regional temperature and precipitation due to the presence …