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Radioactivity From Oil And Gas Wastewater Persists In Pennsylvania Stream Sediments（图）
Radioactivity Oil And Gas Wastewater Pennsylvania Stream Sediments
2018/1/19
More than seven years after Pennsylvania officials requested that the disposal of radium-laden fracking wastewater into surface waters be restricted, a new Duke University study finds that high levels...
Multivariate analysis for geochemical process identification using stream sediment geochemical data: A perspective from compositional data
geochemical process identification k-means robust factor analysis Nanling belt log ratio transformation
2016/4/10
Identification of underlying geochemical processes based on samples of different types such as stream sediments,
soils, and water is important for a range of applications including mineral exploratio...
Paleoseismology and slip rate of the Conway Segment of the Hope Faultat Greenburn Stream,South Island,New Zealand
Hope Fault paleoseismicity ConwaySegment Kaikoura neotectonics slip rate recurrence NZMS 260 sheet 031
2015/9/16
The Conway Segment of the dextral-slip Hope Fault is one of the fastest slipping fault segments along New Zealand s plate boundary, but has not ruptured co-seismically in the historic period and littl...
MIVIS image geocoding experience on merging position attitude system data and public domain GPS stream (ASI-GeoDAF)
MIVIS geocoding geometric correction GPS
2015/9/7
The use of airborne scanners involves geo-referencing problems, which are difficult because of the need to know the exact platform position and attitude for each scan line. The errors of the onboard n...
A Method for Extracting Stream Channel Flow Paths from LiDAR Point Cloud Data
LiDAR Point Cloud Streams
2015/8/14
Traditional methods of delineating stream channel networks use gridded raster elevation data. Direct use of LiDAR point clouds, without first creating a raster or grid, could improve efficiency and ac...
Accounting for instream lakes when interpolating stream water chemistry observations
geostatistics kriging stream water chemistry
2015/8/14
Direct monitoring of stream water chemistry is an increasingly important tool for securing stream water quality and assessing stream ecological functioning as it relates to overall ecosystem health. S...
A Method for Quantifying Stream Network Topology over Large Geographic Extents
stream network topology upstream cell count landscape ecology digital elevation models
2015/8/14
An understanding of stream network topology is necessary for a landscape-level perspective of stream hydrology and ecology. We present a method for quantifying stream network topology that overcomes c...
Annual changes in the chemical composition of stream water in small catchments with different land-use (Carpathian Foothills, Poland)
river water chemistry water pollution nutrient compounds flow tendency
2015/2/4
The aim of the study was to identify the factors that influence annual changes in the chemical composition of stream waters. The research area was located in the marginal zone of the Carpathian Foothi...
Researchers introduce a macrosystems approach to study stream ecology
Researchers macrosystems approach study stream ecology
2015/2/2
Kansas State University scientists and collaborators have developed a new method for studying a variety of streams—including tropical, prairie or forested streams—across continents.Walter Dodds, unive...
Researchers introduce macrosystems approach to study stream ecology
Researchers macrosystems approach study stream ecology
2015/1/21
Kansas State University scientists and collaborators have developed a new method for studying a variety of streams — including tropical, prairie or forested streams — across continents.Walter Dodds, u...
MERCURY DISTRIBUTION IN SOILS AND STREAM SEDIMENTS OF CENTRAL INDIANA, USA
Mercury Soil Sediment Emissions
2015/1/16
An investigation of mercury (Hg) in soils and stream sediments was conducted to understand the impact of urbanization on Hg deposition and accumulation on the upper west fork of the White River waters...
Provenance Study of Reedy Glacier and West Antarctic Ice Stream Tills
Antarctica Ice Stream Till Reedy Glacier
2015/1/16
InJanuary2007,26samplesoftillfrom6differentmorainesalongtheReedy
Glacier,EastAntarcticawerecollectedwiththegoalofdifferentiatingbetweenthese
samplesandtillcollectedfromthebaseoftheWhillans,Kamb,andB...
A Method for Extracting Stream Channel Flow Paths from LiDAR Point Cloud Data
Streams Channels Delineation
2015/1/9
Traditional methods of delineating stream channel networks use gridded raster elevation data. Direct use of LiDAR point clouds, without first creating a raster or grid, could improve efficiency and ac...
Accounting for instream lakes when interpolating stream water chemistry observations
geostatistics kriging stream water chemistry
2015/1/9
Direct monitoring of stream water chemistry is an increasingly important tool for securing stream water quality and assessing stream ecological functioning as it relates to overall ecosystem health. S...
A Method for Quantifying Stream Network Topology over Large Geographic Extents
stream network topology upstream cell count
2015/1/8
An understanding of stream network topology is necessary for a landscape-level perspective of stream hydrology and ecology. We present a method for quantifying stream network topology that overcomes c...