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- Bioswales (1)
- Ephemeral streams -- Greece -- Kalymnos -- Case studies (1)
- Ephemeral streams -- Oregon -- Salmon-Huckleberry Wilderness -- Case studies (1)
- Fluvial geomorphology (1)
- Landsat satellites (1)
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- Mycorrhizal fungi (1)
- Runoff -- Purification -- Heavy metals removal (1)
- Slopes (Soil mechanics) (1)
- Soil moisture -- Measurement (1)
- Soil moisture -- Remote sensing (1)
- Soil remediation (1)
- Urban runoff -- Management (1)
- Water temperature -- Environmental conditions (1)
- Water temperature -- Measurement -- Mathematical models (1)
- Watersheds -- Pacific Northwest -- Case studies (1)
- Wetland hydrology -- Oregon -- Tualatin River National Wildlife Refuge -- Case studies (1)
Articles 1 - 4 of 4
Full-Text Articles in Physical Sciences and Mathematics
Use Of Water Indices Derived From Landsat Oli Imagery And Gis To Estimate The Hydrologic Connectivity Of Wetlands In The Tualatin River National Wildlife Refuge, Debra Sue Blackmore
Use Of Water Indices Derived From Landsat Oli Imagery And Gis To Estimate The Hydrologic Connectivity Of Wetlands In The Tualatin River National Wildlife Refuge, Debra Sue Blackmore
Dissertations and Theses
This study compared two remote sensing water indices: the Normalized Difference Water Index (NDWI) and the Modified NDWI (MNDWI). Both indices were calculated using publically-available data from the Landsat 8 Operational Land Imager (OLI). The research goal was to determine whether the indices are effective in locating open water and measuring surface soil moisture. To demonstrate the application of water indices, analysis was conducted for freshwater wetlands in the Tualatin River Basin in northwestern Oregon to estimate hydrologic connectivity and hydrological permanence between these wetlands and nearby water bodies. Remote sensing techniques have been used to study wetlands in recent …
Use Of Distance Weighted Metrics To Investigate Landscape-Stream Temperature Relationships Across Different Temporal Scales, Eric Craig Watson
Use Of Distance Weighted Metrics To Investigate Landscape-Stream Temperature Relationships Across Different Temporal Scales, Eric Craig Watson
Dissertations and Theses
Stream ecosystems have experienced significant negative impacts from land use, resource exploitation, and urban development. Statistical models allow researchers to explore the relationships between these landscape variables and stream conditions. Weighting the relevant landscape variables based on hydrologically defined distances offers a potential method of increasing the predictive capacity of statistical models. Using observations from three grouped watersheds in the Portland Metro Area (n=66), I have explored the use of three different weighting schemes against the standard method of taking an areal average. These four different model groups were applied to four stream temperature metrics: mean seven-day moving average maximum …
Assessment Of A Mycorrhizal Fungi Application To Treat Stormwater In An Urban Bioswale, Alaina Diane Melville
Assessment Of A Mycorrhizal Fungi Application To Treat Stormwater In An Urban Bioswale, Alaina Diane Melville
Dissertations and Theses
This study assessed the effect of an application of mycorrhizal fungi to stormwater filter media on urban bioswale soil and stormwater in an infiltration-based bioswale aged 20 years with established vegetation. The study tested the use of commercially available general purpose biotic soil blend PermaMatrix® BSP Foundation as a treatment to enhance Earthlite™ stormwater filter media amelioration of zinc, copper, and phosphorus in an ecologically engineered structure designed to collect and infiltrate urban stormwater runoff before it entered the nearby Willamette River.
These results show that the application of PermaMatrix® BSP Foundation biotic soil amendment to Earthlite …
Factors Driving The Concentration Of Ephemeral Flow, Gretchen Anne Guyer
Factors Driving The Concentration Of Ephemeral Flow, Gretchen Anne Guyer
Dissertations and Theses
In spite of decades of related research, stream channel initiation is still not well understood. Current theories of channel initiation are grounded in research conducted by Montgomery and Dietrich, largely in the transport limited, temperate, humid climate of the Pacific Northwest, USA. This field data driven work concluded that the drainage area required for channel initiation is directly correlated to the slope of the contributing area. However, there are a host of related variables that have yet to be examined in the field. This study revisits the slope-area relationship focusing on ephemeral overland flow in headwaters of both the Pacific …