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Earthquake Cluster Zone Closing in on New Zealand

Posted by feww on October 6, 2008

Another Powerful Quake Hits Kermadec Isles Region

A magnitude 6.5 earthquake followed by two strong aftershocks hit the Kermadec Islands region in line with FEWW forecast.


10-degree Map Centered at 30°S,175°W


Raoul Island, Kermadec Islands, Global Reference Map. USGS


FEWW Comments:

  • The center of earthquake cluster incidence within the epicentral region of the  Kermadec Trench appears to be shifting south-southwest of its historical position, and closer to New Zealand North Island.
  • According to FEWW analysis a magnitude 8+ earthquake would likely strike the Kermadec Isles epicentral region centered in an area about 285km SSE of Raoul Island [~900km NE of Auckland, New Zealand] before the New Year. Since 1900 only one other earthquake with a magnitude of 8 has struck the region. [1917 May 1 18:26 UTC, Depth: 60 km – USGS data]

Tectonic Setting

Kermadec Trench – Epicentral Region. Image Credit: USGS

Related Links:

Main Shock

Magnitude: 6.5
Date-Time: Sunday, October 05, 2008 at 09:12:40 PM at epicenter
Location: 30.327°S, 177.195°W
Depth: 35 km (21.7 miles) set by location program
Region: KERMADEC ISLANDS, NEW ZEALAND
Distances:

  • 135 km (85 miles) SSE of Raoul Island, Kermadec Islands
    205 km (125 miles) NE of L’Esperance Rock, Kermadec Islands
    1035 km (650 miles) NE of Auckland, New Zealand
    1410 km (880 miles) NNE of WELLINGTON, New Zealand

Location Uncertainty: horizontal +/- 11.3 km (7.0 miles); depth fixed by location program
Source: USGS NEIC
Event ID    us2008xuan

Aftershocks

1. Magnitude:    5.2
Date-Time: Sunday, October 05, 2008 at 10:45:00 UTC [ October 05, 2008 at 10:45:00 PM at epicenter]
Location:    30.856°S, 176.659°W
Source:    USGS NEIC (WDCS-D)
Event ID: us2008xuas

2. Magnitude:    5.2
Date-Time:  Sunday, October 05, 2008 at 14:09:50 UTC [October 06, 2008 at 02:09:50 AM at epicenter]
Location: 31.156°S, 177.721°W
Source: USGS NEIC
Event ID:  us2008xua8

6 Responses to “Earthquake Cluster Zone Closing in on New Zealand”

  1. feww said

    USGS Report
    Magnitude 5.9
    Date-Time Friday, December 23, 2011 at 02:18:02 UTC [Friday, December 23, 2011 at 03:18:02 PM at epicenter]
    Location 43.491°S, 172.844°E
    Depth 4.9 km (3.0 miles)
    Distances 15 km (9 miles) ENE of Christchurch, New Zealand

    Magnitude 5.3
    Date-Time Friday, December 23, 2011 at 01:06:25 UTC [Friday, December 23, 2011 at 02:06:25 PM at epicenter]
    Location 43.456°S, 172.899°E
    Depth 3.7 km (2.3 miles) (poorly constrained)
    Distances 21 km (13 miles) ENE of Christchurch, New Zealand

    Magnitude 5.8
    Date-Time Friday, December 23, 2011 at 00:58:36 UTC [Friday, December 23, 2011 at 01:58:36 PM at epicenter]
    Location 43.489°S, 172.977°E
    Depth 4.7 km (2.9 miles)
    Distances 26 km (16 miles) ENE of Christchurch, New Zealand

    Geonet NZ
    Reference Number 3631432
    Universal Time December 23 2011 at 3:50
    NZ Daylight Time Friday, December 23 2011 at 4:50 pm
    Latitude, Longitude 43.52°S, 172.92°E
    Focal Depth 10 km
    Richter magnitude 5.0

    Reference Number 3631380
    Universal Time December 23 2011 at 2:18
    NZ Daylight Time Friday, December 23 2011 at 3:18 pm
    Latitude, Longitude 43.53°S, 172.74°E
    Focal Depth 6 km
    Richter magnitude 6.0

    Reference Number 3631363
    Universal Time December 23 2011 at 1:06
    NZ Daylight Time Friday, December 23 2011 at 2:06 pm
    Latitude, Longitude 43.47°S, 172.84°E
    Focal Depth 10 km
    Richter magnitude 5.3

    Reference Number 3631359
    Universal Time December 23 2011 at 0:58
    NZ Daylight Time Friday, December 23 2011 at 1:58 pm
    Latitude, Longitude 43.49°S, 172.90°E
    Focal Depth 8 km
    Richter magnitude 5.8

    See also
    https://feww.wordpress.com/2008/10/06/earthquake-cluster-closes-in-on-new-zealand/

    https://feww.wordpress.com/2011/02/23/christchurch-could-vanish-from-google-map/

    https://feww.wordpress.com/2008/09/30/a-magnitude-7-earthquake-hits-kermadec-islands/

  2. feww said

    https://feww.wordpress.com/2011/04/15/navy-vessel-used-against-deep-sea-drilling-protesters/#comment-17035

  3. feww said

    Magnitude 6.4 Strikes KERMADEC ISLANDS REGION
    2009 May 16 00:53:46 UTC
    Magnitude: 6.4
    Date-Time
    – Saturday, May 16, 2009 at 00:53:46 UTC
    – Saturday, May 16, 2009 at 12:53:46 PM at epicenter
    Location: 31.522°S, 178.887°W
    Depth: 10 km (6.2 miles) set by location program
    Region: KERMADEC ISLANDS REGION
    Distances: 10 km (5 miles) S of L’Esperance Rock, Kermadec Islands
    – 270 km (170 miles) SSW of Raoul Island, Kermadec Islands
    – 825 km (520 miles) NE of Auckland, New Zealand
    – 1215 km (760 miles) NNE of WELLINGTON, New Zealand
    Location Uncertainty: horizontal +/- 5.8 km (3.6 miles); depth fixed by location program
    Parameters: NST=289, Nph=289, Dmin=268.6 km, Rmss=0.96 sec, Gp= 22°,
    M-type=teleseismic moment magnitude (Mw), Version=7
    Source:
    – USGS NEIC (WDCS-D)
    Event ID: us2009gsad

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