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
Fire Earth 
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
feww said
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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