Many studies have looked at human settlements around individual volcanoes for
volcanic risk analyses, but few have done a comparative study to identify possible global
patterns. With the use of Landsat ETM+ data, this study identifies and compares urban
proximity to the Decade Volcanoes to identify volcanic settlement patterns. These...
The density at which urban areas are developed has become a contentious issue, with
advocates for compact cities in conflict with advocates for larger lots and suburban
development. This research paper examines the associated impact of population density
(grouped by residential zones) as measured by vegetation (Normalized Difference Vegetation
Index)...
A Digital Earth is a visualization tool that uses the latest technologies to embed vast
quantities of geographic data into easily understood information. By creating three-dimensional
landscape visualizations that look as photorealistic as current technology
allows, it becomes possible to see, explore, and spatially understand parts of the Earth as...
Spatialization is an innovative way to expand searching capabilities for a
marine/coastal reference database by using a metaphorical map framework to establish
a sense of place for non-spatial information. Spatializing the Catalogue of Oregon
Marine and Coastal Information (COMC1), a coastal reference database, enables the
marine and coastal resource community...
An Internet Map Server (IMS) web site was constructed with the goal of
helping middle- through high-school students learn about ocean processes. This IMS was
developed in conjunction with the activities of the Science & Math Investigative
Learning Experience (SMILE) program, and for eventual use with the Oregon Coastal
Atlas,...
Hawaiian streams are valued for environmental, cultural, and aesthetic
qualities. Windward streams in East Maui, Hawaii are diverted to irrigate crops in
central portions of the island. Diversions typically remove 100% of the base flow and
leave downstream reaches dry most of the year. Ground water seeps and springs
contribute...
The Central Oregon High Cascade Range is an anomalously mafic segment of the Cascade Arc due to ongoing intra-arc extension, which allows most magmas to traverse the crust without stalling and evolving to more evolved compositions. North Sister, a composite volcano in this arc segment, has produced a seemingly monotonous...
Volcan Aucanquilcha, a Pleistocene to Recent composite volcano in northern Chile, is the youngest and center-most member of the 11 m.y.-old Aucanquilcha Volcanic Cluster (AVC). The AVC has produced [approximately]350 km³ of lava over its history. Magmatism started slowly and was punctuated by high rates of eruption between 4.5 and...
Numerous studies have demonstrated that vegetation canopies affect snow
accumulation and ablation processes. In addition, estimates of remotely sensed snow
covered area can be biased by the presence of an overlying vegetation canopy.
Consequently, any attempts to measure, model, or map the distribution of snow in a
region with heterogeneous...
Several state and federal agencies have identified Oregon's coastal wetlands as
priority areas for conservation, and in some cases have specifically singled out
nontidal (mostly palustrine) wetlands as a major concern. Recent research has
highlighted the need to study and manage wetlands from a regional perspective that
considers the distribution...