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Data Event Response to the 24 January 2016 Mw 7.1 Earthquake 83km E of Old Iliamna, Alaska

Written by David Phillips & Beth Bartel
25 January 2016

Tectonic Summary

From the USGS Event Page:
The January 24, 2016 M 7.1 earthquake southwest of Anchorage, Alaska, occurred as the result of strike-slip faulting at intermediate depths, within the subducted lithosphere of the Pacific plate.

For more information, see the USGS Earthquake Hazards Program event page.

UNAVCO Response

High Rate GPS Data
In response to the Mw 7.1 earthquake 83 km east of Old Iliamna, Alaska on January 24, 2016, also known as the Iniskin earthquake, high-rate one-sample-per-second (1-sps or 1 Hz) GPS data are being collected from PBO stations within 400 km of the epicenter for a 7-day period around the event (day of event ± 3 days). Higher rate 5-sps (5 Hz) data are also being downloaded from four stations within the greater Anchorage area for a 24 hour period around the event (± 12 hours). A map of GPS stations being downloaded is shown in Figure 2. These data will be available from ftp://data-out.unavco.org/pub/highrate/.

GPS Velocities
The GAGE GPS Analysis Center Coordinator estimates coseismic offsets for any stations that experience horizontal displacements of > 1mm. If such offsets are observed, station offset files will be made available from ftp://data-out.unavco.org/pub/products/event/.

Borehole Strainmeter Data
A fully processed 1-sps borehole strainmeter (BSM) dataset spanning the time period of this event is now available at ftp://borehole.unavco.org/pub/bsm/earthquakes/

UNAVCO Data and Support

  • Please contact archive-gpsunavco.org for information on data availability

Related Links

Map Center:
Iniskin Bay, Alaska


Last modified: 2020-02-06  00:23:17  America/Denver