Browsing Department of Geography by Title
Now showing items 5-24 of 32
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Calibrations of phase abundance, composition, and particle size distribution for olivine-orthopyroxene mixtures from reflectance spectra
(American Geophysical Union, 1986-10-10)Spectral reflectance measurements of characterized (phase abundance, particle size) mixtures of olivine and orthopyroxene were utilized to define the correlations between spectral and albedo parameters of such assemblages ... -
Composition of Jupiter irregular satellites sheds light on their origin
(EDP Sciences, 2017)Context. Irregular satellites of Jupiter with their highly eccentric, inclined and distant orbits suggest that their capture took place after the giant planet migration. Aims. We aim to improve our understanding of the ... -
Compositional homogeneity of CM parent bodies.
(The Astronomical Journal, 2016-08-10)CM chondrites are the most common type of hydrated meteorites, making up ∼1.5% of all falls. Whereas most CM chondrites experienced only low-temperature (∼0°C–120°C) aqueous alteration, the existence of a small fraction ... -
Diaspores and related hydroxides' Spectral-compositional properties and implications for Mars
(Journal of Geophysical Research, 2000-03-25)Differences in spectral reflectance properties (0.3-26 μm) of a suite of metal hydroxides (gibbsite, böhmite, diaspore, goethite, and manganite) have been found to be a function of both structural and compositional differences ... -
Distribution of hydrated minerals in the north polar region of Mars
(Journal of Geophysical Research, 2009-01-28)The previous discovery of extensive deposits of hydrated minerals in Olympia Planum in the north polar region of Mars by the Mars Express OMEGA instrument raises important questions about the origin and subsequent ... -
The ecology of methane in streams and rivers: patterns, controls, and global significance
(Ecological Society of America, 2015-12-07)Streams and rivers can substantially modify organic carbon (OC) inputs from terrestrial landscapes, and much of this processing is the result of microbial respiration. While carbon dioxide (CO₂) is the major end‐product ... -
Empowering Churchill: Exploring energy security in northern Manitoba
(Arctic Institute of North America, 2022-06-11)To those living in Churchill, Manitoba, having power means much more than being able to turn on the lights. Using Churchill as a case study, we examine how local context can improve the suitability of energy security ... -
Evolution of Occator Crater on (1) Ceres
(The Astronomical Journal, 2017-02-17)The dwarf planet Ceres (diameter 939 km) is the largest object in the main asteroid belt. Recent investigations suggest that Ceres is a thermally evolved, volatile-rich body with potential geological activity, a body which ... -
Forestry and Kaiñgining in the Philippines: A Selected Bibliography
(1980)An annotated bibliography on forests and forestry in the Philippines. Table of contents: 1. Aforestation - Reforestation; 2. Deforestation; 3. Forest Laws/Agencies; 4. Vegetation Cover of R.P.; 5. Parang - Fallow; 6. ... -
Intra-urban analysis of commercial locations: A GIS-based approach
(2013)The urban landscape is an interspersed mixing of residences, shops, theatres, parks, natural areas, and a multitude of other uses. From the early days of the central markets, to the planned downtown, to the heavily planned ... -
Lake Manitoba and its Watershed: Knowledge Gaps & Next Steps
(2016)Lake Manitoba is a large, shallow prairie lake located in central Manitoba. The lake and watershed are subject to numerous environmental pressures including climate change, land use change, and regulation of water levels, ... -
Linking dominant rainfall-runoff event hydrologic response dynamics with nitrate and chloride load estimates of three boreal Shield catchments
(American Geophysical Union, 2021-08-21)Understanding hydrological dynamics in boreal Shield catchments is critical for projecting changes in stream runoff and chemistry in a region that is sensitive to climate change. Previous work has mostly focused on a limited ... -
Manganese-rich olivines: Identification from spectral reflectance properties
(Journal of Geophysical Research, 1997-11-25)Reflectance spectra of manganese-rich olivines were examined to determine which spectral features allow these minerals to be distinguished from forsteritic-fayalitic olivines. The results indicate that manganese-rich ... -
Mineralogic constraints on sulfur-rich soils from Pancam spectra at Gusev crater, Mars
(Geophysical Research Letters, 2007-07-06)The Mars Exploration Rover (MER) Spirit excavated sulfur-rich soils exhibiting high albedo and relatively white to yellow colors at three main locations on and south of Husband Hill in Gusev crater, Mars. The multispectral ... -
A model for training undergraduate students in collaborative science
(American Geophysical Union, 2018-08-16)Engagement of undergraduate students in research has been demonstrated to correlate with improved academic performance and retention. Research experience confers many benefits on participants, particularly foundational ... -
More than Talking Heads?!? How do administrative tribunals hear from the public? A report prepared for the Consumers’ Association of Canada – Manitoba Branch
(2021-04-30)Consumers and the general public want a say in the decisions which affect them. However, access to meaningful engagement in regulatory decisions is uneven across jurisdictions, as well as across types of tribunals. Scholarship ... -
A new staples industry? Complexity, governance and Canada's diamond mines
(Oxford University Press, 2007)The discovery of indicator minerals in the Slave geological province began a staking and development rush that, in a little over a decade, saw Canada becoming one of the world’s largest producers of diamonds. An examination ... -
Optical and radiometric models of the NOMAD instrument part I: the UVIS channel
(Optics Express, 2015-11-09)The NOMAD instrument has been designed to best fulfil the science objectives of the ExoMars Trace Gas Orbiter mission that will be launched in 2016. The instrument is a combination of three channels that cover the UV, ... -
Optical and radiometric models of the NOMAD instrument part II: the infrared channels - SO and LNO
(Optics Express, 2016-02-16)NOMAD is a suite of three spectrometers that will be launched in 2016 as part of the joint ESA-Roscosmos ExoMars Trace Gas Orbiter mission. The instrument contains three channels that cover the IR and UV spectral ranges ... -
Pyroxene reflectance spectra: Minor absorption bands and effects of elemental substitutions
(Journal of Geophysical Research, 2002-06-13)Reflectance spectra of a suite of compositionally diverse pyroxenes exhibit variable spectral properties which are associated with various elemental substitutions. Those associated with transition series elements, such as ...
