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Iceberg Harmonic Tremor, seismometer data
Entry ID: MacAyealseismo_tremor_0229546

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Abstract: Iceberg harmonic tremor (IHT) emanating from tabular icebergs in the Southern Ocean and around the coast of Antarctica is observed as seismoacoustic signals on islands in the equatorial Pacific, as hydro-acoustic signals in the Indian Ocean, and in local and regional Antarctic seismograms. To identify the IHT source mechanism and to understand the relevance of IHT to iceberg calving, drift and ... View entire text
Related URL
Description: This site mirrors the NSIDC website archive.
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Geographic Coverage
Spatial coordinates   
  N: -77.0   S: -77.0   E: 168.0   W: 168.0
Min Altitude: 10 M

Data Set Citation
Dataset Originator/Creator: Douglas R. MacAyeal
Dataset Title: Iceberg Harmonic Tremor, seismometer data
Temporal Coverage
Start Date: 2003-12-27
Stop Date: 2003-12-28
Data Resolution
Temporal Resolution: 1/100 sec
Temporal Resolution Range: < 1 second
SEISMOMETERS Ancillary Description
Quality Sensor (Guralp 40T) parameters can be found at:

and at,

Counts to ground velocity conversion can be found at this site:

The seismometer was placed in a shallow snow pit on iceberg C16 near its northeast corner. Operation was powered by a solar-charged 12-volt battery.
Access Constraints none
Use Constraints none
Data Set Progress
Data Center
National Snow and Ice Data Center Supplemental Info
Data Center URL:

Data Center Personnel
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at
Contact Address:
National Snow and Ice Data Center
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
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Distribution Media: ftp or internet
Distribution Size: 150 mbytes
Distribution Format: space delimited ascii, one header line
Fees: none
Phone: 773-702-8027
Fax: 773-702-9505
Email: drm7 at
Contact Address:
Department of Geophysical Sciences
University of Chicago
5734 S. Ellis Ave
City: Chicago
Province or State: IL
Postal Code: 60637
Country: USA
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MacAyeal, D. R., E. A. Okal, R. C. Aster, and J. N. Bassis (2008), Seismic and hydroacoustic tremor generated by colliding icebergs, J. Geophys. Res., 113, F03011, doi:10.1029/2008JF001005.
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2008-09-19
Last DIF Revision Date: 2017-08-23
Future DIF Review Date: 2009-01-01