Open Access. Powered by Scholars. Published by Universities.®

Geomorphology Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 5 of 5

Full-Text Articles in Geomorphology

Mapping The Surface Characteristics Of The Mojave With Remote Sensing For Terrestrial Habitat Modeling, Scott A. Nowicki Dec 2012

Mapping The Surface Characteristics Of The Mojave With Remote Sensing For Terrestrial Habitat Modeling, Scott A. Nowicki

Scott A Nowicki

High-resolution ecological and climate modeling requires quantification of surface characteristics such as rock abundance, soil induration and surface roughness at fine-scale, since these features can affect the micro and macro habitat of a given area and ultimately determine the assemblage of plant and animal species that may occur there. Our objective is to develop quantitative data layers of thermophysical properties of the entire Mojave Desert Ecoregion for applications to habitat modeling being conducted by the USGS Western Ecological Research Center. These research efforts are focused on developing habitat models and a better physical understanding of the Mojave Desert, which have …


Sediment Geochemistry Of River Okura: Implication To Weathering And Transport, Y B. Gideon, F B. Fatoye Aug 2012

Sediment Geochemistry Of River Okura: Implication To Weathering And Transport, Y B. Gideon, F B. Fatoye

Confluence Journal Environmental Studies (CJES), Kogi State University, Nigeria

Rocks, soils and bed sediments of River Okura catchment area in Anambra basin have been analysed for major oxides using minipal 4 ED version of XRF machine. A total number of five (5) rocks and twenty (20) samples of soil, river bed sediments for each were collected from the study area. These results have been used to characterize and deduce the effect of weathering and transport in the study area. Chemical composition and field studies assessment of the rock(s) in the study area indicated lithic arenite type of sandstone. Results of soils analyses shows a compositional enrichment of Fe2O3 (12.54%) …


A Comparison Of Three Terrain Parameters That May Be Used To Identify Denudation Surfaces Within A Gis: A Case Study From Wales, United Kingdom., Matt D. Rowberry Jan 2012

A Comparison Of Three Terrain Parameters That May Be Used To Identify Denudation Surfaces Within A Gis: A Case Study From Wales, United Kingdom., Matt D. Rowberry

Matt D Rowberry

The study of denudation surfaces has long formed a major theme within geomorphic and tectonic research. This paper describes the computational methods used to identify these surfaces through three terrain parameters within a GIS. The investigated parameters are slope angle, relative relief, and the elevation-relief ratio. The study area under consideration is that of Wales, United Kingdom. The SRTM DEM forms the basis of this investigation, with all data interrogation undertaken in ArcMap 9.3. The computational methods are described in detail and then the results relating to each terrain parameter are compared. The denudation surface maps based on slope angle …


The Monitoring Of Slow Moving Landslides And Assessment Of Stabilisation Measures Using An Optical-Mechanical Crack Gauge, Jan Klimeš, Matt D. Rowberry, Jan Blahůt, Miloš Briestenský, Filip Hartvich, Blahoslav Košťák, Jan Rybář, Josef Stemberk, Petra Štěpančíková Jan 2012

The Monitoring Of Slow Moving Landslides And Assessment Of Stabilisation Measures Using An Optical-Mechanical Crack Gauge, Jan Klimeš, Matt D. Rowberry, Jan Blahůt, Miloš Briestenský, Filip Hartvich, Blahoslav Košťák, Jan Rybář, Josef Stemberk, Petra Štěpančíková

Matt D Rowberry

It is possible to monitor slow moving landslides and assess landslide stabilisation measures over protracted periods using an optical-mechanical crack gauge, called a TM-71. This technical note outlines the theoretical background to the gauge and illustrates its practical application through a number of case studies. These studies are drawn from a range of landslide types and stabilisation measures. In terms of monitoring slow moving landslides, three studies of deep-seated deformations are presented. The Taukliman coastal landslide on the Black Sea Coast is characterised by vertical and horizontal displacements of up to 0.2 mm.yr-1 and sudden earthquake-induced dilations of up to …


Determination Of Paleoearthquake Timing And Magnitudes On The Southern Segment Of The East Cache Fault, Utah, James P. Mccalpin Jan 2012

Determination Of Paleoearthquake Timing And Magnitudes On The Southern Segment Of The East Cache Fault, Utah, James P. Mccalpin

James P. McCalpin

We investigated the late Quaternary rupture history of the southern East Cache Fault zone [ECFZ], northern Utah with geologic mapping, paleoseismic logging of fault trenches, ground-penetrating radar, and optically stimulated luminescence dating. McCalpin (1989) indicated that the southern segment of the ECFZ consisted of three strands. We excavated four trenches across these strands, and evaluate the stratigraphy and structure of the sites. We conclude that the western fault strand of the ECFZ has had no late Quaternary displacement or does not exist; the central strand has not had any late Quaternary movement and may be a drape fold; and the …