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Explore Search: signal-to-noise ratio

Filter Total Items: 26
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Assessment of the impacts of image signal-to-noise ratios in impervious surface mapping

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Geostatistical estimation of signal-to-noise ratios for spectral vegetation indices

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Optimization of wide-angle seismic signal-to-noise ratios and P-wave transmission in Kenya

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Effects of spectrometer band pass, sampling, and signal‐to‐noise ratio on spectral identification using the Tetracorder algorithm

Featured Films and Shorts

Image of the Week - RBV and Alaska Glaciers

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High-pass corner frequency selection for implementation in the USGS automated ground motion processing tool

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Self-similar rupture implied by scaling properties of volcanic earthquakes occurring during the 2004-2008 eruption of Mount St. Helens, Washington

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Study on geophone coupling and attenuating compensatory of low-depression velocity layer in desert area

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The Moon Mineralogy Mapper (M3) imaging spectrometer for lunar science: Instrument description, calibration, on‐orbit measurements, science data calibration and on‐orbit validation

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High-resolution imaging of hydrothermal heat flux using optical and thermal Structure-from-Motion photogrammetry

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A comparative ground response study near Los Angeles using recordings of Nevada nuclear tests and the 1971 San Fernando earthquake

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Improved phase-ellipse method for in-situ geophone calibration

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Long period seismic source characterization at Popocatépetl volcano, Mexico

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Investigation of detection limits for solutes in water measured by laser raman spectrometry

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Design and application of an electromagnetic vibrator seismic source

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Classification of MEC with the ALLTEM at Camp Stanley, Texas

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3-D P- and S-wave velocity structure and low-frequency earthquake locations in the Parkfield, California region

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ALLTEM UXO detection and discrimination

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Enzyme-linked immunosorbent assay for a soluble antigen of Renibacterium salmoninarum, the causative agent for salmonid bacterial kidney disease

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Advantages of wet work for near-surface seismic reflection

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Swept Impact Seismic Technique (SIST)

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Improved resolution across the Global Seismographic Network: A new era in low-frequency seismology

Photography
Satellite differences in imagery.

The Progress of Landsat Sensor Technology

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Assessing the likely value of gravity and drawdown measurements to constrain estimates of hydraulic conductivity and specific yield during unconfined aquifer testing

Research
Black & white photo of two USGS scientists conducting spirit leveling in the field

Spirit Leveling

Featured Films and Shorts

2013 LDCM Mission J Irons and Others