Seismology

Atlas

Atlas was developed as an interactive data processing package for extracting, locating, and organizing digital seismograph data from Earthworm databases, SEED files, Nanometrics Data Server and Nanometrics Stores.

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Generate trace data packages events using data from Nanometrics data servers, Nanometrics Stores, picks, and analysis results

• Access data from Earth worm databases; Nanometrics data servers; and Nanometrics Stores over any network or Internet connection
• Import/export SEED files
• Merge traces from events in other databases

View and Pick events using the intuitive interface

• Sort traces by first phase time or by channel name
• View multiple events simultaneously from several data sources
• Edit event and solution names

Edit existing events create phase, duration, and amplitude picks,create multiple solutions, and manipulate trace data

• Load and add trace data to events
• Correct for instrument response
• Do magnitude estimations:
• Based on corrected signal amplitude
• Based on duration
• Calculated using Hypo inverse
• Calculate event location solutions, using Hypo inverse
• Edit the Hypo inverse phase input file
• Add comments to solutions and events
• Recalculate individual or all amplitude picks

Create digital filters and apply them individually or as a group to trace data

• Instrument deconvolution
• Instrument simulation
• Trend removal
• Ground motion conversion
• S-plane and Z-plane filters,using either poles and zeroes or coefficients for the transfer function
• Butterworth filters

Work with fully interactive maps that combine a geographical display of stations and epicentres with various attributes of the event, see which stations contributed to the solution, make adjustments, calculate a new solution, and compare with another solution

Load and display maps that use any of several file formats:

• ArcInfo
• ESRIshape files
• DTED
• Raster files JPEG and GIF

Apply various projections:

• Mercator
• Lambert Conformal Conic
• Stereographic
• Identity projection (no projection)

Customize map data settings?almost any aspect of an event can be shown:be it a P-pick residual or a magnitude, using a variety of widgets
Do a spectral analysis of any trace or trace segment
Easily create HTML bulletins to view and distribute summaries of events
Easily post bulletins to Athena