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Data Event Response to the April 5, 2018 M5.3 Earthquake 29km SW of Santa Cruz Is. (E end), California

Written by David Phillips & Beth Bartel
6 April 2018

Event Summary

A Mw 5.3 earthquake occurred at 19:29:16 UTC on April 5, 2018, 29km SW of Santa Cruz Is. (E end), California. For more information, see the USGS Earthquake Hazards Program event page.

UNAVCO Response

GPS/GNSS Data - Custom Downloads for Post Processing
UNAVCO downloaded high-rate 1-sps (1 Hz) and 5-sps (5 Hz) data from 12 GPS/GNSS stations operated by UNAVCO within 75 km of the epicenter for a 6-hour time window around the event (± 3 hours). A map of downloaded stations is shown in Figure 2. These data are available from the UNAVCO high rate data ftp site.

GPS/GNSS Displacements
The GAGE GPS Analysis Center Coordinator (ACC) will estimate preliminary coseismic offsets associated with this earthquake. When analyses are complete, any observed offsets will be tabulated and published in an event (*.EVT) file available from the UNAVCO event products ftp site. As more data become available, the ACC will also produce a “final” offset solution as well as offsets estimated from Kalman filter time series analyses. All GPS station offsets estimated by Kalman filter time series analyses are included in the offset (*.OFF) file, updated monthly, from the offset products ftp site.

Borehole Strainmeter Data
UNAVCO has produced a fully processed 1-sps borehole strainmeter (BSM) dataset spanning the time period of this event, available from the PBO borehole strainmeter event response page.

UNAVCO Data and Support

  • Please contact archive-gpsunavco.org for information on data availability.
  • To request access to these and other RT-GPS stations operated by UNAVCO please send an email request to rtgpsunavco.org.
  • For information on past event responses, see the UNAVCO Geophysical Event Response page.

Related Links

Map Center:
Santa Cruz Island, California


Last modified: 2020-01-28  22:54:39  America/Denver