Filters: Tags: volcanic landforms (X) > partyWithName: Natural Hazards (X) > partyWithName: U.S. Geological Survey (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Adam Mosbrucker Volcano Science Center U.S. Geological Survey - ScienceBase Matthew C Gyves Jon J Major More... Tag Types USGS Scientific Topic Keyword (2) Theme (2) Place (2) Harvest Set (2) Tag Schemes None (2) ISO 19115 Topic Category (2) View Results as: JSON ATOM CSV

SedCam Model Calibration Imagery Acquired June 2020 to September 2021 at East Branch Brandywine Creek (USGS 01480870) Two empirical simple linear regression models were developed from SedCam imagery and concurrent physical sediment samples over a 20-month period at the East Branch Brandywine Creek gage (USGS 01480870). The image files included here are a subset, used in the calibration dataset for these regression models. Models relate the explanatory variable, Rmax (maximum digital number of the red band, which peaks at a wavelength of 590 nanometers) to point and cross-sectional mean sample response variables (milligrams per liter). These regression models predict suspended-sediment concentration from a non-contact sediment surrogate technique to improve surface water monitoring operations. Files include Nikon Electronic Format... Tags: Climatology, DEM, Delaware River, East Branch Brandywine Creek, Ecology, All tags... Environmental Health, Geography, Geomorphology, Hydrology, Information Sciences, Land Use Change, PA, Remote Sensing, Sedimentology, Soil Sciences, USA, USGS Science Data Catalog (SDC), Water Quality, Water Resources, digital elevation model, elevation data, geomorphology, hydrology, inlandWaters, photogrammetry, sediment, topography, volcanic landforms, volcano, Fewer tags Digital elevation model of South Fork Toutle River, Mount St. Helens, based on June–July 1980 airborne photogrammetry The lateral blast, debris avalanche, and lahars of the May 18th, 1980, eruption of Mount St. Helens, Washington, dramatically altered the surrounding landscape. The eruption produced mudflows in the South Fork Toutle River basin, which drains the western slopes of the volcano. Orthophotography was acquired shortly after the eruption (June 19 and July 1). Survey extent includes South Fork Toutle River, from its headwaters at Talas and Toutle Glaciers to its mouth at the confluence with North Fork Toutle River near Toutle, Washington. In 2004, Photo Sciences, Inc., under contract to the U.S. Geological Survey (USGS), used softcopy photogrammetry techniques to produce a contour map, breaklines, and masspoints. A USGS... Tags: Cascade Range, Cowlitz County, DEM, Ecology, Forestry, All tags... Geography, Geomorphology, Glaciology, Hydrology, Land Use Change, Loowit, Mount St. Helens, Remote Sensing, Sedimentology, South Fork Toutle River, Toutle River, USA, USGS Science Data Catalog (SDC), Volcanology, WA, Water Quality, Water Resources, biota, digital elevation model, elevation data, geomorphology, hydrology, photogrammetry, sediment, topography, volcanic landforms, volcano, Fewer tags