Portable Array Seismic Studies of Continental Lithosphere

Multiple studies from 1998-2000 used portable arrays of seismic receivers to analyze the continental lithosphere. The IRIS PASSCAL program organized these experiments, which utilized both earthquake and explosive synthetic sources. Data is available in IRIS SEGY format for synthetic sources and in tar files with AH traces and SEED format for earthquake data.

Use Cases

• Analyze seismic reflection/refraction profiles from the northern Brooks Range experiment to model subsurface geology.
• Study discontinuities beneath Mauna Loa using earthquake data traces to understand volcanic structure.
• Model crustal structure along the transect from western Ontario to Wyoming using assembled SEGY data sets.
• Investigate high-frequency seismic signals from the Pinyon Flats study for wave propagation analysis.
• Examine multiple data sets on the Loma Prieta earthquake for event characterization and aftershock studies.

Strengths

• Includes data from multiple distinct experiments across varied geological settings.
• Provides data in standardized formats (SEGY and SEED) for seismic analysis.
• Temporal coverage for experiments is documented for years 1998-2000.

Limitations

• Specific row counts, file sizes, and complete column details are unknown.
• Data availability and formats differ between earthquake and synthetic source studies, complicating unified access.
• Geographic coverage is specific to listed experiments (e.g., Brooks Range, Hawaii), not globally comprehensive.

Provenance

Source

IRIS PASSCAL program organized by SCIOPS.

Collection Method

Data gathered from portable arrays of seismic receivers using earthquake and explosive sources.

Time Range

Experiments beginning in years 1998-2000.

Freshness

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Geography

Includes specific regions: northern Brooks Range, Mauna Loa, western Ontario to Wyoming, Pinyon Flats, Loma Prieta area, Ouachita, Basin and Range province, Hawaii (ALOHA), and Iceland.