Index Catalog // ScholarsArchive@OSU

Debris flows and flood disturbance in small, mountain watersheds

Creator:: Snyder, Kai U.
Abstract:: This study examined debris flows occurring in a 125 km² study area in the Blue River watershed in the western Cascade Mountains of Oregon over a 50-year period. Debris flow occurrence was found to be concentrated in a distinct zone of high activity occupying approximately half of the study area,...
Resource Type:: Masters Thesis
Full Text:: River watershed in the western Cascade Mountains of Oregon over a 50-year period. Debris flow

Sediment storage in a headwater valley of the Oregon Coast Range : erosion rates and styles and valley-floor capacitance

Creator:: Casebeer, Nathan E.
Abstract:: This study is part of the effort to quantify sediment budgets and understand the geomorphic evolution of steep mountains where debris flows are the dominant agent of upland erosion. Observations indicate that headwater basins in the Oregon Coast Range (OCR) can store a large amount of sediment, mostly from debris...
Resource Type:: Masters Thesis
Full Text:: Storage in a Headwater Valley of the Oregon Coast Range: Erosion Rates and Styles and Valley-Floor

Distribution of juvenile salmonids and stream habitat relative to 15-year-old debris-flow deposits in the Oregon Coast Range

Creator:: Kirkby, Kristen-Marie S.
Abstract:: Debris flows, common disturbances in many mountainous areas, initially scour or bury stream habitats; however, debris flows deliver vast amounts of wood, boulders, and gravel that may ultimately form complex stream habitat to potentially support a diverse salmonid assemblage. The materials deposited by debris flows would otherwise be inaccessible to...
Resource Type:: Masters Thesis
Full Text:: Relative to 15-year-old Debris-flow Deposits in the Oregon Coast Range

Debris flow characteristics associated with forest practices in the central Oregon Coast Range

Creator:: May, Christine L.
Abstract:: Debris flows in the Pacific Northwest play a major role in routing wood and sediment stored on hillslopes and in first- through third-order channels to higher order channels and valley floors. Forest practices on steep, unstable slopes and removal of riparian trees along low-order streams can affect the frequency, magnitude,...
Resource Type:: Masters Thesis
Full Text:: Associated with Forest Practices in the Central Oregon Coast Range. Abstract approved: Ame E. Skaugset

The changing glaciers of Mt. Hood, Oregon and Mt. Rainier, Washington : implications for periglacial debris flows

Creator:: Ellinger, Jonathan R.
Abstract:: Mountain glaciers are receding worldwide with numerous consequences including changing hydrology and geomorphology. This study focuses on changes in glacier area on Mt. Hood, Oregon and Mt. Rainier, Washington where damaging debris flows have occurred in glaciated basins. Landsat imagery is used to map debris-free ice on a decadal time...
Resource Type:: Masters Thesis
Full Text:: : The Changing Glaciers of Mt. Hood, Oregon and Mt. Rainier, Washington: Implications for Periglacial

Meteorological conditions associated with rain-related periglacial debris flows on Mount Hood, Oregon and Mount Rainier, Washington

Creator:: Parker, Lauren E.
Abstract:: In November of 2006 an intense rainstorm of tropical origin, known colloquially as the "Pineapple Express," inundated the Pacific Northwest region of the United States, initiating numerous periglacial debris flows on several of the stratovolcanoes in the Cascade Range of Oregon and Washington. These debris flows rapidly aggrade channels, deposit...
Resource Type:: Masters Thesis
Full Text:: Flows on Mount Hood, Oregon and Mount Rainier, Washington Abstract approved

Role of Extreme Events on Sedimentation in Loon Lake, Oregon Coast Range, USA

Creator:: Richardson, Kristin Noel Duckworth
Abstract:: Sediment cores were retrieved from a landslide-dammed lake, recording events back to the 5th century AD in a forested, mountainous catchment. These cores provide an opportunity to compare the impacts of known recent perturbations, including floods and timber harvesting with those of the early period of the core, flood, fire,...
Resource Type:: Masters Thesis
Full Text:: Sedimentation in Loon Lake, Oregon Coast Range, USA. Abstract approved

Recent periglacial debris flows from Mount Rainier, Washington

Creator:: Copeland, Elizabeth A.
Abstract:: Debris flow initiation is controlled by a complex interaction of geology, geomorphology, climate, and weather. In the Cascade Range of Pacific Northwest and mountainous areas globally, patterns of temperature and precipitation are being altered by climate change, which may in turn impact debris flow initiation. Temperature has increased and patterns...
Resource Type:: Masters Thesis
Full Text:: A THESIS Submitted to Oregon State University in partial fulfillment of the

Debris flows in glaciated catchments : a case study on Mount Rainier, Washington

Creator:: Legg, Nicholas T.
Abstract:: Debris flows, which occur in mountain settings worldwide, have been particularly damaging in the glaciated basins flanking the stratovolcanoes in the Cascade Range of the northwestern United States. This thesis contains two manuscripts that respectively investigate the (1) initiation processes of debris flows in these glaciated catchments, and (2) debris...
Resource Type:: Masters Thesis
Full Text:: A THESIS submitted to Oregon State University in partial fulfillment of the

The imprint of coarse woody debris on soil biological and chemical properties in the western Oregon Cascades

Creator:: Spears, Julie D. H.
Abstract:: The abundance and spatial heterogeneity of coarse woody debris (CWD) on the forest floor is a prominent feature of Pacific Northwest (PNW) forest ecosystems. The effect of CWD on soil solution chemistry, nutrient cycling and availability, soil physical structure and formation of soil organic matter, however, remains unknown. Therefore, studies...
Resource Type:: Dissertation
Full Text:: Coarse Woody Debris on Soil Biological and Chemical Properties in the Western Oregon Cascades Abstract

ScholarsArchive@OSU

Debris flows and flood disturbance in small, mountain watersheds

Sediment storage in a headwater valley of the Oregon Coast Range : erosion rates and styles and valley-floor capacitance

Distribution of juvenile salmonids and stream habitat relative to 15-year-old debris-flow deposits in the Oregon Coast Range

Debris flow characteristics associated with forest practices in the central Oregon Coast Range

The changing glaciers of Mt. Hood, Oregon and Mt. Rainier, Washington : implications for periglacial debris flows

Meteorological conditions associated with rain-related periglacial debris flows on Mount Hood, Oregon and Mount Rainier, Washington

Role of Extreme Events on Sedimentation in Loon Lake, Oregon Coast Range, USA

Recent periglacial debris flows from Mount Rainier, Washington

Debris flows in glaciated catchments : a case study on Mount Rainier, Washington

The imprint of coarse woody debris on soil biological and chemical properties in the western Oregon Cascades

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