MOBSI: Ambient Seismic Noise Data from Arctic Rivers, Lakes, and Seas

Arctic seismic data from seven survey lines in the Russian and Canadian Arctic, including the Lena Delta and Beaufort Sea. The dataset was collected using a portable Mobile Ocean Bottom Seismic Instrument (MOBSI) deployed from small boats to record ambient noise. It was created by Michael Angelopoulos of the Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung.

Use Cases

• Analyze ambient seismic noise characteristics based on three-component broadband sensor recordings.
• Map subsurface structures in Arctic aquatic environments based on seismic soundings from lakes, rivers, and seas.
• Develop or validate methods for portable ocean-bottom seismometer deployments based on the described MOBSI system and deployment protocol.
• Study the seismic signature of different Arctic water bodies (lakes, rivers, lagoons) based on data from distinct geographic profiles.

Strengths

• Data includes precise location and depth for each sounding, with latitude, longitude, and water depth provided.
• Collection followed a quality control protocol using live data analysis to ensure instrument tilt was less than 5 degrees.
• Sampling frequency was consistently set to 100 samples per second for all soundings.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung

Collection Method

Collected using a portable Mobile Ocean Bottom Seismic Instrument (MOBSI) deployed from a small boat or zodiac.

Geography

Russian Arctic (Lena Delta, Bykovsky Peninsula) and Canadian Arctic (Beaufort Sea near Tuktoyaktuk Island)