Published February 27, 2023 | Version v1
Dataset Open

Earthquake catalogs for: A specific earthquake processing workflow for studying long-lived explosive volcanic eruptions with application to the 2008 Okmok eruption

Creators

  • 1. Department of Earth and Planetary Sciences, University of California, Santa Cruz, Santa Cruz
  • 2. Department of Earth and Environmental Sciences, University of Michigan
  • 3. Alaska Volcano Observatory, USGS Alaska Science Center
  • 4. Geophysical Institute, University of Alaska Fairbanks

Contributors

  • 1. Department of Earth and Planetary Sciences, University of California, Santa Cruz, Santa Cruz
  • 2. Department of Earth and Environmental Sciences, University of Michigan
  • 3. Alaska Volcano Observatory, USGS Alaska Science Center
  • 4. Geophysical Institute, University of Alaska Fairbanks

Description

Repository for the seismic catalogs from Garza-Giron et al. (2023a,b). These include the catalog with absolute locations using NonLinLoc (Lomax et al., 2001; Lomax and Curtis, 2001), and the relocated catalogs using hypoDD (Waldhauser and Ellsworth, 2000) and GrowClust (Trugman and Shearer, 2017).

The header of the CSV files is as follows:

Date (year/month/day), Time (hr:min:sec:msec), Latitude (decimal degrees), Longitude (decimal degrees), Depth (km), Magnitude (Ml calculated for this study), Event_type (VT:vulcano-tectonic;LP:long-period), Number of stations where the event was detected, ID

References:

Garza‐Giron, R., Brodsky, E. E., Spica, Z. J., Haney, M. M., & Webley, P. W. (2023a). A specific earthquake processing workflow for studying long‐lived, explosive volcanic eruptions with application to the 2008 Okmok Volcano, Alaska, eruption. Journal of Geophysical Research: Solid Earth, e2022JB025882.
 
Garza‐Girón, R., Brodsky, E. E., Spica, Z. J., Haney, M. M., & Webley, P. W. (2023b). Earthquakes record cycles of opening and closing in the enhanced seismic catalog of the 2008 Okmok Volcano, Alaska, eruption. Journal of Geophysical Research: Solid Earth, 128(7), e2023JB026893.
 

Lomax A, Curtis A (2001) Fast, probabilistic earthquake location in 3-D models using oct-tree importance sampling. Geophys Res Abstracts, 3:955.

Lomax, A., Zollo, A., Capuano, P., and Virieux, J. (2001). Precise, absolute earthquake location under Somma‐Vesuvius volcano using a new 3D velocity model.Geophysical Journal International,146, 313–331.

Trugman, D. T., and Shearer, P. M. (2017). GrowClust: A hierarchical clustering algorithm for relative earthquake relocation, with application to the Spanish Springs and Sheldon, Nevada, earthquake sequences. Seismological Research Letters, 88(2A), 379-391.

Waldhauser, F., and Ellsworth, W. L. (2000). A double-difference earthquake location algorithm: Method and application to the northern Hayward fault, California. Bulletin of the Seismological Society of America, 90(6), 1353-1368.

Notes

Acknowledgments We are grateful to the staff of the Alaska Volcano Observatory for their heroic work in collecting the key data of this paper and their insightful feedback throughout this project. We are also grateful to Heather Crume (Shaddox) who provided thoughtful suggestions for the writing of this manuscript and to the participants of the UCSC Seismo Lab coffee hours for discussion of this work. This work was partially supported by the Mexican National Council for Science and Technology (CONACYT) Doctoral Scholarship to Garza-Giron and in part by NSF EAR-2102069. The maps shown in this work were made using The Generic Mapping Tools (GMT)(Wessel et al., 2019). The majority of the seismological signal processing performed in this work was done using the Obspy Python package (Beyreuther et al., 2010). For the quality control process of this work we made use of the Pyrocko library (Heimann et al., 2019) and the Kurtosis picker from the PhasePApy package (Chen and Holland, 2016). Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

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