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This USGS data release represents field surveyed elevation points and source lidar points used to develop an objective method for estimating boundary roughness from publicly available elevation data. Also included is the Python script written to execute a routine to convert a 1 meter digital elevation model into a 1 meter boundary roughness raster. This data set has two separate items: 1. The Supplemental Information used to validate the bare earth surface within a forested floodplain. 2. The Python script and associated ArcGIS toolbox
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Abstract The isotopic composition of Pb in fugitive dust suspended by a vehicle from 13 unsurfaced roads in Missouri was measured to identify the source of Pb within an established long-term mining area. A three end member model using 207Pb/206Pb and concentration as tracers resulted in fugitive dust samples plotting in the mixing field of well characterized heterogeneous end members. End members selected for this investigation include the 207Pb/206Pb for 1) a Pb-mixture representing mine tailings, 2) aerosol Pb impacted soils within close proximity to the Buick secondary recycling smelter, and 3) an average of soils, rock cores and drill cuttings representing the background characteristics. Aqua regia total concentrations...
Categories: Data;
Types: Citation,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Iron, Reynolds, Dent, Washington, and Crawford Counties,
Iron, Reynolds, Dent, Washington, and Crawford Counties,
Pb apportionment,
Pb apportionment,
Pb isotopic ratios, All tags...
Pb isotopic ratios,
Road Dust,
Road Dust,
Sequential extraction,
Sequential extraction,
USGS Science Data Catalog (SDC),
Unsurfaced roads,
Unsurfaced roads,
Viburnum Trend Mining District,
Viburnum Trend Mining District, Fewer tags
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