USGS ComCat via its FDSN event service; at most 20,000 events per request.
Earthquakes (USGS)
Volcanoes
Smithsonian GVP Holocene volcanoes, with live US alert levels from the USGS Volcano Hazards Program.
Volcanoes
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OPERA UNR Grid Viewer
OPERA gridded GPS time series for the Vertical Land Motion (VLM)
product line. Gridding solution by Dr. William C. Hammond,
Nevada Geodetic Laboratory (UNR),
developed under OPERA in coordination with the OPERA ADT.
Viewer: JPL.
Display
Reference
Record
Analysis
km
yr to
d, ΔAIC
>σ noise
Data
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Disclaimer
This viewer and the underlying gridded GPS products are research
tools provided “as is”, without warranty of any kind, express or
implied. Displacements, uncertainties, and derived velocities are
experimental and may contain errors or artifacts. Use of this
tool does not imply endorsement by JPL/Caltech, NASA, or the
University of Nevada, Reno.
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Up (mm)
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Drag = box zoom · wheel = zoom time · double-click = reset · click = jump to date ·
drag bottom-right corner to resize.Tap = jump to date.
Dashed line = current date; dashed curves = fit.
Shift+click another map point to compare it in a second chart.