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Full-Text Articles in Geography

Classification System For The Natural Vegetation Of Arkansas, Thomas L. Foti, Martin Blaney, Xiaojun Li, Kimberly G. Smith Jan 1994

Classification System For The Natural Vegetation Of Arkansas, Thomas L. Foti, Martin Blaney, Xiaojun Li, Kimberly G. Smith

Journal of the Arkansas Academy of Science

We present a hierarchical classification system for existing natural vegetation of Arkansas based on the United Nations Educational, Scientific and Cultural Organization (UNESCO) system. It incorporates aspects of systems in use by the Nature Conservancy, Arkansas Natural Heritage Commission, Arkansas Game and Fish Commission, Society of American Foresters, and United States Forest Service, as well as data on potential vegetation from maps by E.E. Dale and A.W. Kuchler. A total of 18 physiognomic cover types are recognized for natural terrestrial cover, 6 for palustrine cover, and 4 each for lacustrine cover and riverine cover. Over 200 community types are recognized, …


A Test Of The Multiquadric Method Of Interpolation Using Drumlin Data From The Lunenburg, Nova Scotia And Peterborough, Ontario, Fields, Catherine Treena Conrad Jan 1994

A Test Of The Multiquadric Method Of Interpolation Using Drumlin Data From The Lunenburg, Nova Scotia And Peterborough, Ontario, Fields, Catherine Treena Conrad

Theses and Dissertations (Comprehensive)

The multiquadric method of interpolation has been used to generate surfaces from irregularly distributed points of geophysical data, and has proven to be a successful means of mapping such data. There are four stages involved in the implementation of the method (Saunderson, 1994): (1) solution of a system of simultaneous, linear equations; (2) interpolation of new z values, for a number of locations within the x,y area of an initial sample space of points; (3) plots of all the z values at their respective locations, using colour graphics instead of contouring; and (4) plots of the partial derivatives of z …


A Test Of The Multiquadric Technique Of Interpolation With An Application To Fluid Speeds In A River (Ontario), James Patrick Dozois Jan 1994

A Test Of The Multiquadric Technique Of Interpolation With An Application To Fluid Speeds In A River (Ontario), James Patrick Dozois

Theses and Dissertations (Comprehensive)

Hardy's (1971) technique of interpolation was tested using fluid speed data from Big Otter Creek, a gravel bed stream, in South-Western Ontario. Fourteen cross-sections were selected from a 500 m-long reach of the river. Each cross-section was divided into 10 verticals. Fluid speed was sampled as different positions in these verticals starting at 0.025 m off the channel bed using an electromagnetic current metre. Bed roughness at each cross-section was determined by collecting samples of the bed material and by measuring the long, intermediate and short axes of particles at the 10 verticals. To test the multiquadric technique of interpolation, …