Waveform Quality Control for the GLISN Network
GLISN:
The GreenLand Ice Sheet monitoring Network (GLISN) is an
international cooperative effort to provide high-quality,
broadband seismological data from Greenland and immediately
surrounding regions. The GLISN effort also provides more
limited related geophysical data where appropriate (e.g., GPS data from
several sites on the Greenland Ice Sheet). The GLISN project
is described further on the
GLISN web site.
WQC effort for GLISN seismic data:
The Waveform Quality Center, associated with the
Global CMT Project
at the Lamont-Doherty Earth Observatory of Columbia University,
has begun to apply to the GLISN data many of the QA/QC tools that
we use for data from global seismograph networks.
Here, we provide links to the results of systematic processing
of the GLISN data.
GLISN (2009/01/01 - present):
Noise:
GLISN RMS noise values, monthly by station
GLISN RMS noise values, monthly ranked list
Note: The RMS values reported in the tables linked above
reflect both ground noise at each site and the reported response information for the site. If the response information reported is incorrect, the noise estimates will not reflect true noise conditions at the site!
Station (mis)orientation:
GLISN orientation estimates
Scaling factors:
GLISN scaling factors
Current through:
| last data processed | metadata updated | channels |
| 2013/06/30 | 2013/08/20 | 40 sps and lower (LH, BH) |
These results do not yet include stations for which the lowest
sampling rate is >40 sps. These channels will be included in future
analysis.
GLISN auxiliary stations (pre-GLISN and current temporary
stations):
GLISN auxiliary stations, RMS noise values, monthly by station
GLISN auxiliary stations, RMS noise values, ranked list
Meredith Nettles,
Lamont-Doherty Earth
Observatory,
Columbia University