Data Services Products: MEQL - OBS microseism - Axial Volcano Microseism Energy Quick Look (MEQL) Highlight - ocean-bottom seismic and hydroacoustic data at the secondary microseism band of 0.1-0.35 Hz for the Axial Volcano eruption, 2015-04-24


The underwater Axial volcano (see Figure 1) erupted on April 24, 2015. The OO – Ocean Observatories Initiative network of Ocean-Bottom Seismometer (OBS) stations, equipped with hydrophones sensors, have been deployed in that area since 2014 and provide excellent opportunity to correlate microseism noise variations with changes in water pressure and ocean wave activities due to this eruption. This microseism energy quick look (MEQL) highlight provides a sample of such comparison utilizing seismic and hydroacoustic data from the AXBA1 and HYS14 stations of this network as well as standard meteorological data from the National Data Buoy Center.


The Secondary microseisms (SM) with periods between 2.86s and 10s are thought to be induced by pressure perturbations on the ocean bottom (Longuet-Higgins, 1950). This highlight looks at the SM variations and hydroacoustic pressure changes at two of the OO – Ocean Observatories Initiative (OBS) network stations deployed near this volcano (see Figure 1). The meteorological data collected by the buoy network of the National Data Buoy Center (NDBC) are also presented. These data cover April 20, 2015 through April 30, 2015 that encompasses the underwater Axial volcano eruption on April 24, 2015. The SM computations are performed using the IRIS noise Toolkit.

Citations and DOIs

  • Trabant, C., A. R. Hutko, M. Bahavar, R. Karstens, T. Ahern and R. Aster (2012), Data products at the IRIS DMC: stepping-stones for research and other application, Seismological Research Letters, 83(6), 846:854.


  • Longuet-Higgins, M. S. (1950), A theory of the origin of microseisms, Philos. Trans. R. Soc. London, Ser. A, 243, 1–35.


  • IRIS DMC Data Products Team




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