PAGER - M 7.0 - SOUTH ISLAND OF NEW ZEALAND

Alert Version: 7Friday, September 3rd, 2010 at 16:35:46 GMTLocation: 43.5° S, 172.1° EDepth: 5kmEvent Id: US2010ATBJCreated: 1 day, 22 hours after earthquake.
Overall, the population in this region resides in structures that are vulnerable to earthquake shaking, though some resistant structures exist. A magnitude 6.1 earthquake 237 km Northeast of this one struck Cape Campbell, New Zealand on January 18, 1977 (UTC), with estimated population exposures of 59,000 at intensity VI and 258,000 at intensity V, with no reported fatalities. On November 24, 1995 (UTC), a magnitude 6.1 earthquake 62 km Northwest of this one struck Cass, New Zealand, with estimated population exposures of 380,000 at intensity V and 223,000 at intensity IV, with no reported fatalities.

Exposure Summary

Estimated Population Exposed to Earthquake Shaking

Est. Modified Mercalli IntensityEst. Population ExposurePerceived ShakingPotential Structure Damage
ResistantVulnerable
X0ExtremeV. HeavyV. Heavy
IX0ViolentHeavyV. Heavy
VIII6kSevereModerate/HeavyHeavy
VII16kVery StrongModerateModerate/Heavy
VI344kStrongLightModerate
V147kModerateV. LightLight
IV76kLightnonenone
II-III68k*Weaknonenone
I--*Not Feltnonenone
*Estimated exposure only includes population within calculated shake map area
Population Exposure
Population per ~1 sq. km. from LandScan
Population Exposure Map
Selected Cities Exposed
MMICityPop.
VIIBurnham1k
VIIRolleston3k
VIIDarfield2k
VILincoln2k
VIRakaia1k
VLeeston1k
VChristchurch364k
IVOamaru13k
IVTimaru28k
IVGreymouth9k
IIIBlenheim27k
Shaking Intensity
Shake Map

Full City Exposure List

MMICityPopulation
VIIBurnham1k
VIIRolleston3k
VIIDarfield2k
VILincoln2k
VIRakaia1k
VLeeston1k
VChristchurch364k
VMethven1k
VOxford2k
VWoodend3k
VAmberley1k
IVOamaru13k
IVPleasant Point1k
IVTimaru28k
IVGreymouth9k
IVWestport4k
IVHokitika3k
IIIBlenheim27k
IIIBrightwater2k
IIIWakefield2k
IIWanaka4k

PAGER results are generally available on the Internet within 30 minutes of the earthquake’s occurrence. However, information on the extent of shaking will be uncertain in the minutes and hours following and earthquake and typically improves as additional sensor data and reported intensities are acquired and incorporated into models of the earthquake's source. Users of PAGER estimates should account for uncertainty and always seek the most current PAGER release for any earthquake.

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