Assessing Occurrence Patterns of Shallow Hikurangi Slow Slip Events Using Renewal Processes
Abstract We investigate the occurrence patterns of SSEs along the shallow (<15 km) portion of the Hikurangi subduction zone. First, we build a manual catalog constraining timing and length of 92 SSEs between 2006 and 2024. Then, we investigate SSE occurrence patterns by fitting a renewal process,...
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| Format: | Article |
| Language: | English |
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Wiley
2025-07-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2025GL116605 |
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| author | Andrea Perez‐Silva Ting Wang Laura Wallace Mark Bebbington Paul Denys |
| author_facet | Andrea Perez‐Silva Ting Wang Laura Wallace Mark Bebbington Paul Denys |
| author_sort | Andrea Perez‐Silva |
| collection | DOAJ |
| description | Abstract We investigate the occurrence patterns of SSEs along the shallow (<15 km) portion of the Hikurangi subduction zone. First, we build a manual catalog constraining timing and length of 92 SSEs between 2006 and 2024. Then, we investigate SSE occurrence patterns by fitting a renewal process, using Bayesian inference to obtain the posterior distribution of model parameters. Our results show that SSE recurrence intervals vary along the Hikurangi margin; less frequent SSEs occur in the southern part of the margin. The periodicity of SSEs also changes along strike. SSEs in the northern part of the margin occur more regularly than those at the central part. Finally, we do not find conclusive evidence that 2016 Mw7.8 Kaikōura earthquake had a lasting effect on SSE occurrence patterns. |
| format | Article |
| id | doaj-art-1d53de93e75e4ee799e45007acf5c8ef |
| institution | DOAJ |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-1d53de93e75e4ee799e45007acf5c8ef2025-08-20T02:56:24ZengWileyGeophysical Research Letters0094-82761944-80072025-07-015213n/an/a10.1029/2025GL116605Assessing Occurrence Patterns of Shallow Hikurangi Slow Slip Events Using Renewal ProcessesAndrea Perez‐Silva0Ting Wang1Laura Wallace2Mark Bebbington3Paul Denys4University of Otago Dunedin New ZealandUniversity of Otago Dunedin New ZealandGEOMAR Helmholtz Center for Ocean Research Kiel Kiel GermanySchool of Mathematical and Computational Sciences, and School of Agriculture and Environment Massey University Palmerston North New ZealandUniversity of Otago Dunedin New ZealandAbstract We investigate the occurrence patterns of SSEs along the shallow (<15 km) portion of the Hikurangi subduction zone. First, we build a manual catalog constraining timing and length of 92 SSEs between 2006 and 2024. Then, we investigate SSE occurrence patterns by fitting a renewal process, using Bayesian inference to obtain the posterior distribution of model parameters. Our results show that SSE recurrence intervals vary along the Hikurangi margin; less frequent SSEs occur in the southern part of the margin. The periodicity of SSEs also changes along strike. SSEs in the northern part of the margin occur more regularly than those at the central part. Finally, we do not find conclusive evidence that 2016 Mw7.8 Kaikōura earthquake had a lasting effect on SSE occurrence patterns.https://doi.org/10.1029/2025GL116605slow slip eventsrenewal processessubduction zonesHikurangi |
| spellingShingle | Andrea Perez‐Silva Ting Wang Laura Wallace Mark Bebbington Paul Denys Assessing Occurrence Patterns of Shallow Hikurangi Slow Slip Events Using Renewal Processes Geophysical Research Letters slow slip events renewal processes subduction zones Hikurangi |
| title | Assessing Occurrence Patterns of Shallow Hikurangi Slow Slip Events Using Renewal Processes |
| title_full | Assessing Occurrence Patterns of Shallow Hikurangi Slow Slip Events Using Renewal Processes |
| title_fullStr | Assessing Occurrence Patterns of Shallow Hikurangi Slow Slip Events Using Renewal Processes |
| title_full_unstemmed | Assessing Occurrence Patterns of Shallow Hikurangi Slow Slip Events Using Renewal Processes |
| title_short | Assessing Occurrence Patterns of Shallow Hikurangi Slow Slip Events Using Renewal Processes |
| title_sort | assessing occurrence patterns of shallow hikurangi slow slip events using renewal processes |
| topic | slow slip events renewal processes subduction zones Hikurangi |
| url | https://doi.org/10.1029/2025GL116605 |
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