eprintid: 1483 rev_number: 12 eprint_status: archive userid: 2 dir: disk0/00/00/14/83 datestamp: 2015-02-20 11:32:00 lastmod: 2017-02-08 12:21:42 status_changed: 2015-04-27 12:10:59 type: article metadata_visibility: show creators_name: Stock, Christian creators_name: Smith, Euan corp_creators: School of Earth Sciences P.O. Box 600 Victoria University of Wellington Wellington, New Zealand corp_creators: School of Earth Sciences P.O. Box 600 Victoria University of Wellington Wellington, New Zealand title: Comparison of Seismicity Models Generated by Different Kernel Estimations ispublished: pub subjects: SS divisions: EPOS-P full_text_status: none abstract: Different forms of kernel estimation have been used for the construction of spatially continuous earthquake occurrence representations. A method has been developed to quantify the difference between such representations. The method compares seismicity models generated by kernel estimation for an earlier and a later time period to measure the ability of the models to forecast the locations of future earthquakes. Further, the (earlier) models are compared to the distribution of the original earthquake catalog to measure the closeness of representation and data. The method has been applied to historical earthquake catalogs of New Zealand and Australia. We found that kernel estimations with spatially varying bandwidths performed better than kernel estimations with spatially constant bandwidths. The use of a temporal sequence filter improved the match between the earlier and later models. The Gaussian kernel provided better results than the inverse-biquadratic kernel, due to the longer tails of the inverse-biquadratic kernel, which did not describe the distribution of earthquakes in space accurately. A bandwidth of about 1.0 (in area units) for the Gaussian kernel provided the best results, whereas a bandwidth of about 0.4 provided the best results for the inverse-biquadratic kernel. date: 2002-04 date_type: published publication: Bulletin of the Seismological Society of America volume: 92 number: 3 publisher: Seismological Society of America pagerange: 913-922 id_number: doi:10.1785/0120000069 refereed: TRUE issn: 0037-1106 official_url: http://dx.doi.org/10.1785/0120000069 access_IS-EPOS: limited owner: Publisher citation: Stock, Christian and Smith, Euan (2002) Comparison of Seismicity Models Generated by Different Kernel Estimations. Bulletin of the Seismological Society of America, 92 (3). pp. 913-922. DOI: https://doi.org/10.1785/0120000069