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Social and Behavioral Sciences Commons

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Geography

2005

Doctoral Dissertations

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Full-Text Articles in Social and Behavioral Sciences

Spatio-Temporal Patterns Of Geomorphic Adjustment In Channelized Tributary Streams Of The Lower Hatchie River Basin, West Tennessee, Mary A. Boulton Dec 2005

Spatio-Temporal Patterns Of Geomorphic Adjustment In Channelized Tributary Streams Of The Lower Hatchie River Basin, West Tennessee, Mary A. Boulton

Doctoral Dissertations

The processes involved in fluvial geomorphic adjustment to human-induced change are not well understood, despite an increasing and global prevalence of human disturbance to rivers. This doctoral dissertation research examines spatial and temporal patterns of geomorphic adjustment processes in three tributary streams of the Lower Hatchie River Basin, in west Tennessee, which are adjusting to historic land clearance and channelization. This dissertation examines (1) the types and spatial pattern of geomorphic adjustment processes in a total of 34 tributary reaches located in Richland, Jeffers, and Dry Creeks, (2) the applicability of an existing model of geomorphic adjustment for use in …


A Watershed Classification System Based On Headwater Catchments In Great Smoky Mountains National Park, Tennessee-North Carolina, Martin Dietrich Lafrenz Dec 2005

A Watershed Classification System Based On Headwater Catchments In Great Smoky Mountains National Park, Tennessee-North Carolina, Martin Dietrich Lafrenz

Doctoral Dissertations

Headwater areas in the southeastern U.S., as well as elsewhere, have received little attention from researchers, even though headwater catchments comprise over 70% of the land area in the southeastern highlands. The small, low-order streams that drain these catchments are greatly affected by hillslope processes within their watersheds. As such, there exists a strong link between upland landscape history and a headwater stream’s condition, including its channel morphology, habitat, and water quality. I employ this tight connection between landscape-scale attributes and reach-scale morphology in order to develop a headwater catchment classification system for Great Smoky Mountains National Park that describes …


Temporal Gis Design Of An Extended Time-Geographic Framework For Physical And Virtual Activities, Hongbo Yu Aug 2005

Temporal Gis Design Of An Extended Time-Geographic Framework For Physical And Virtual Activities, Hongbo Yu

Doctoral Dissertations

Recent rapid developments of information and communication technologies (ICT) enable a virtual space, which allows people to conduct activities remotely through tele-presence rather than through conventional physical presence in physical space. ICT offer people additional freedom in space and time to carry out their activities; this freedom leads to changes in the spatio-temporal distributions of activities. Given that activities are the reasons for travel, these changes will impact transportation systems. Therefore, a better understanding of the spatial and temporal characteristics of human activities in today’s society will help researchers study the impact of ICT on transportation. Using an integrated space-time …