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New Zealand seismological report 1990

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SR_1992_11-pdf
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    1992 New Zealand seismological report 1990. Lower Hutt: Institute of Geological & Nuclear Sciences. Institute of Geological & Nuclear Sciences science report 92/11. 172 p.

    Abstract: The form of this report follows lines established in recent years. The main list of regional shocks contains only earthquakes of magnitudes 3.5 or greater located with 10 o of Wellington, and smaller earthquakes known to have however been assigned serial numbers, so the serials of the shocks listed are often not consecutive. Phase data are not published here, but are instead sent to the International Seismological Centre, and appear in their bulletins, which constitute the only medium now in use for routine reporting of arrival time observations made in New Zealand. The lists of origin coordinates and magnitudes include sufficient supplementary information for assessment of the quality of the data on which they are based. There is also a list of origins of earthquakes in the Wellington area with magnitudes of 2.0 or more. This list gives less information on the quality of individual determinations, but the density of recording stations in the area, and their easy accessibility for maintenance ensure that errors are small. Seismologists urgently requiring unpublished New Zealand data may apply to the Observatory. Historic data are also available but unless a two way information exchange is involved it is the Observatory's practice to make a charge for the recovery of this material. Definitive origins for local earthquakes are usually available within a few months of their occurrence. During 1990, the Seismological Observatory was part of the Department of Scientific and Industrial Research (DSIR). On 1 July 1992 the DSIR ceased to exist and the Seismological Observatory is now part of the Institute of Geological and Nuclear Sciences Limited. Observatory practices remain unchanged (ed)

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