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New Macroseismic Intensity Assessment Method for New Zealand Web Questionnaires

2018; Seismological Society of America; Volume: 89; Issue: 2A Linguagem: Inglês

10.1785/0220170163

1938-2057

Tatiana Goded, Nick Horspool, Silvia Canessa, Adam Lewis, Krystal Geraghty, Amy Jeffrey, Matt Gerstenberger,

Emergency and Acute Care Studies

Research Article| January 24, 2018 New Macroseismic Intensity Assessment Method for New Zealand Web Questionnaires Tatiana Goded; Tatiana Goded aGNS Science, 1, Fairway Drive, Avalon, Lower Hutt 5010, New Zealand, t.goded@gns.cri.nz Search for other works by this author on: GSW Google Scholar Nick Horspool; Nick Horspool aGNS Science, 1, Fairway Drive, Avalon, Lower Hutt 5010, New Zealand, t.goded@gns.cri.nz Search for other works by this author on: GSW Google Scholar Silvia Canessa; Silvia Canessa aGNS Science, 1, Fairway Drive, Avalon, Lower Hutt 5010, New Zealand, t.goded@gns.cri.nz Search for other works by this author on: GSW Google Scholar Adam Lewis; Adam Lewis aGNS Science, 1, Fairway Drive, Avalon, Lower Hutt 5010, New Zealand, t.goded@gns.cri.nz Search for other works by this author on: GSW Google Scholar Krystal Geraghty; Krystal Geraghty aGNS Science, 1, Fairway Drive, Avalon, Lower Hutt 5010, New Zealand, t.goded@gns.cri.nzbAlso at Waikato University, Gate 1 Knighton Road, Private Bag 3105, Hamilton 3240, New Zealand. Search for other works by this author on: GSW Google Scholar Amy Jeffrey; Amy Jeffrey aGNS Science, 1, Fairway Drive, Avalon, Lower Hutt 5010, New Zealand, t.goded@gns.cri.nzbAlso at Waikato University, Gate 1 Knighton Road, Private Bag 3105, Hamilton 3240, New Zealand. Search for other works by this author on: GSW Google Scholar Matt Gerstenberger Matt Gerstenberger aGNS Science, 1, Fairway Drive, Avalon, Lower Hutt 5010, New Zealand, t.goded@gns.cri.nz Search for other works by this author on: GSW Google Scholar Author and Article Information Tatiana Goded aGNS Science, 1, Fairway Drive, Avalon, Lower Hutt 5010, New Zealand, t.goded@gns.cri.nz Nick Horspool aGNS Science, 1, Fairway Drive, Avalon, Lower Hutt 5010, New Zealand, t.goded@gns.cri.nz Silvia Canessa aGNS Science, 1, Fairway Drive, Avalon, Lower Hutt 5010, New Zealand, t.goded@gns.cri.nz Adam Lewis aGNS Science, 1, Fairway Drive, Avalon, Lower Hutt 5010, New Zealand, t.goded@gns.cri.nz Krystal Geraghty aGNS Science, 1, Fairway Drive, Avalon, Lower Hutt 5010, New Zealand, t.goded@gns.cri.nzbAlso at Waikato University, Gate 1 Knighton Road, Private Bag 3105, Hamilton 3240, New Zealand. Amy Jeffrey aGNS Science, 1, Fairway Drive, Avalon, Lower Hutt 5010, New Zealand, t.goded@gns.cri.nzbAlso at Waikato University, Gate 1 Knighton Road, Private Bag 3105, Hamilton 3240, New Zealand. Matt Gerstenberger aGNS Science, 1, Fairway Drive, Avalon, Lower Hutt 5010, New Zealand, t.goded@gns.cri.nz Publisher: Seismological Society of America First Online: 24 Jan 2018 Online Issn: 1938-2057 Print Issn: 0895-0695 © Seismological Society of America Seismological Research Letters (2018) 89 (2A): 640–652. https://doi.org/10.1785/0220170163 Article history First Online: 24 Jan 2018 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Tatiana Goded, Nick Horspool, Silvia Canessa, Adam Lewis, Krystal Geraghty, Amy Jeffrey, Matt Gerstenberger; New Macroseismic Intensity Assessment Method for New Zealand Web Questionnaires. Seismological Research Letters 2018;; 89 (2A): 640–652. doi: https://doi.org/10.1785/0220170163 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietySeismological Research Letters Search Advanced Search ABSTRACT This article presents the implementation of an expert‐based method to calculate community intensities (community modified Mercalli intensity [CMMI]) for New Zealand earthquakes, using GeoNet’s “Felt Classic” (2004–2016) online felt reports. The method has been implemented and tested for about 43,000 felt reports from nine recent moderate‐to‐large (⁠Mw 5.7–7.8) New Zealand earthquakes, including the damaging 4 September 2010 Mw 7.1 Darfield, 22 February 2011 Mw 6.2 Christchurch, and 14 November 2016 Mw 7.8 Kaikoura earthquakes. Results from this method (matrix method) have been compared for the 14 February 2016 Mw 5.7 Christchurch earthquake using three independent approaches: (1) postal traditional method, (2) community intensities from New Zealand’s latest ground‐motion intensity conversion equation (GMICE), and (3) community intensities from a recent GMICE using California data. Results show a good consistency in community intensities between the matrix, postal traditional, and California GMICE methods. However, CMMI derived using the New Zealand GMICE shows a tendency to overestimate the intensities by about 2–3 intensity levels in comparison with the CMMI and traditional MMI, showing the need to review the current New Zealand GMICE.The first database of CMMI for New Zealand felt reports has been generated, comprising 914,000 felt reports from 27,688 different earthquakes during the 2004–2016 period. The database has generated more than 57,000 community intensity values for communities with five or more felt reports. Further quality testing is currently being carried out to improve the quality and robustness of the CMMI method. This method provides a useful way to obtain geographical damage distribution following an earthquake, being the first of its kind using New Zealand felt report data. Its future use in ShakeMapNZ and the GeoNet website will provide local authorities, emergency planners, decision makers, and the public with a fast and easy tool for understanding the damage distribution following an earthquake. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.