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Joint Inversion of High-Rate GPS and Teleseismic Observations for Rupture Process of the 23 June 2014 (M_w 7.9) Rat Islands Archipelago, Alaska, Intermediate Depth Earthquake

Ye, Lingling and Lay, Thorne and Kanamori, Hiroo and Freymueller, Jeffrey T. and Rivera, Luis (2016) Joint Inversion of High-Rate GPS and Teleseismic Observations for Rupture Process of the 23 June 2014 (M_w 7.9) Rat Islands Archipelago, Alaska, Intermediate Depth Earthquake. In: Plate Boundaries and Natural Hazards. Geophysical Monograph Series. No.219. Wiley , Hoboken, NJ, pp. 149-166. ISBN 9781119053972. https://resolver.caltech.edu/CaltechAUTHORS:20181127-080527318

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Abstract

On 23 June 2014, a large (M_W 7.9) earthquake ruptured within the subducting Pacific plate ~100 km below the Rat Islands archipelago, Alaska. The focal mechanism indicates two possible rupture orientations: on a shallowly dipping fault plane striking perpendicular to the trench, possibly related to curvature of the underthrust slab or; on a steeply dipping fault plane striking parallel to the trench, possibly associated with a slab detachment process. Joint inversion of teleseismic body waves and regional high‐rate (1Hz) GPS recordings indicate a slip zone spanning 50 km × 30 km with a maximum slip of ~11 m on the shallowly dipping plane, or a more distributed slip pattern extending upward to ~70 km, with maximum slip of ~14 m on the steeply dipping plane. The finite‐fault models and aftershocks do not indicate a preferred fault plane. This type of intermediate‐depth intraslab faulting can be very damaging for populated regions above subduction zones such as Japan, Taiwan, Chile, Peru, and Indonesia.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1002/9781119054146.ch7DOIArticle
ORCID:
AuthorORCID
Ye, Lingling0000-0002-8739-2072
Lay, Thorne0000-0003-2360-4213
Kanamori, Hiroo0000-0001-8219-9428
Additional Information:© 2016 American Geophysical Union. Published Online: 18 October 2016; Published Print: 09 August 2016.
Group:Seismological Laboratory
Subject Keywords:Alaska; GPS recordings; joint inversion; Rat Islands earthquake; rupture orientations; teleseismic body waves
Series Name:Geophysical Monograph Series
Issue or Number:219
Record Number:CaltechAUTHORS:20181127-080527318
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20181127-080527318
Official Citation:Ye, L. , Lay, T. , Kanamori, H. , Freymueller, J. T. and Rivera, L. (2016). Joint Inversion of High‐Rate GPS and Teleseismic Observations for Rupture Process of the 23 June 2014 (Mw 7.9) Rat Islands Archipelago, Alaska, Intermediate Depth Earthquake. In Plate Boundaries and Natural Hazards (eds J. C. Duarte and W. P. Schellart). doi:10.1002/9781119054146.ch7
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91205
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:27 Nov 2018 17:28
Last Modified:03 Oct 2019 20:32

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