Data Services Newsletter

Volume 16 : No 3 : Winter 2014

Data from the OOI Cabled Array Seismic Network in Cascadia is now available

IRIS has been working with the Ocean Leadership Consortium (OL) to make data from the cabled array component of the OOI project deployed off the coast of Washington and Oregon available to the scientific community. We are happy to announce that the data are now openly available through the IRIS DMC. The seismic network code for these data is OO.

Read the Ocean Leadership announcement »

Figure 1 - Cabled Array map
Figure 1: Credit: OOI Cabled Array program and the Center for Environmental Visualization, University of Washington (Disclaimer: Graphics are conceptual designs and are not yet finalized. All data are subject to revision without notice.)

IRIS wishes to thank the OL team led by Mike Kelly as well as John Delaney’s group at the University of Washington that made this all possible.
Thanks especially to Deb Kelley, Brian Ittig, Dana Manalag, and Chuck McGuire at the University of Washington for their efforts on the OOI side of the collaboration.

IRIS provides a metadata aggregator the allows users to see details about the data, types of seismometers, locations, etc.
The following map shows the locations of the various 13 stations and is also available online.

Figure 2 - Network map for OO
Figure 2: Screenshot of the IRIS Google Map Service map of the OO network

These data can be accessed through all tools at the DMC that our community is used to using including:

The timeseries tool at the web services URL allows users to select specific instruments and parameter ranges and generate a plot. The following link is to a plot of an event recorded by one of the OOI stations on Axial Seamount during a 1 minute interval on December 12, 2014, from the mid-period channel, high pass filtered at 10 Hz, and converted to units of ground motion (meters per second).

http://service.iris.edu/irisws/timeseries/1/query?net=OO&sta=AXAS1&cha=MHZ&start=2014-12-12T19:30:00&end=2014-12-12T19:31:00&scale=AUTO&hp=1.0&output=plot&width=900&height=400&antialias=true&loc=—

Figure 3 - Timeseries Web Service plot example for OO data
Figure 3: Timeseries plot of an event recorded by one of the OOI stations on Axial Seamount during a 1 minute interval on December 12, 2014, from the mid-period channel (MHZ), high pass filtered at 10 Hz, and converted to units of ground motion (meters per second).

These data are generated as part of a project funded by the NSF through an MREFC grant that funds the Ocean Observatories Initiative. IRIS efforts are supported by the NSF funding of the SAGE proposal to IRIS provided by the GEO Directorate of NSF.

by Tim Ahern (IRIS Data Management Center)