Following my alert at the start of this week, that preceded GNS Science’s quick explanation of last weekend’s shallow quake swarm beneath Lake Taupo, further Kermadec Islands magnitude 5 earthquakes are passing ‘unnoticed’ in New Zealand seismic records, though not overseas:

020611 magnitude 5.1 Kermadec Islands

020611 magnitude 5.1 Kermadec Islands

020611 Pacific Rim - morning

020611 Pacific Rim - morning

Why is that the case, when again the Kermadec Trench effect can apparently be found on our coastal seismograph records? Here we see the above event at Kaikoura, at the eight-hour mark:

020511 Kaikoura seismometer

020611 Kaikoura seismometer


Time approx 8am NZST; further, long and steady tectonic grinding is evident. (Hawaii had two small quakes.)

And this too is probably today’s Kermadec quake – the odd-looking shape above ’12 hours ago’ – picked up from Christchurch vicinity, which is why I’m documenting concern..

020611 seismometer Banks Peninsula

020611 seismometer Banks Peninsula

With this onshore linked precedent?:
Magnitude 4.4, Wednesday, June 1 2011 at 11:45 am (NZST), 30 km north-east of Opotiki

I urge Kiwi north-east coast readers to keep good watch on quakes.globalincidentmap.com for signs of a Kermadec Islands fore-shock quake swarm, like the magnitude 5 swarm which preceded March 2011’s Sendai offshore magnitude 9.1 earthquake. This may prove to be your best warning, with possible ground-shaking, of devastating north-east coastal tsunami risk. Service is not in place to watch this hazard for you.

~ Kia ora

020611 Pacific Rim - evening

020511 Pacific Rim - evening


Revisiting, the Australian Plate seems to be showing increased activity north of Australia and New Zealand – with a Solomon Islands 5.4 (after yesterday’s offshore Chile 6.2). This may have seismic implications for both countries…

020611 seismometer Northland

020611 seismometer Northland


And something big – over 15 minutes of motion – was picked up around Northland, before mid-day NZST.

Another day later (“I told you so”) 4.6 & 4.9 new Kermadec quakes, and a 6.3 near Honshu, Japan:

Pacific Rim quakes June 3, 2011

Pacific Rim quakes June 3, 2011


..looking like the northern Australian Plate shock sequence is coming our way?..

A better view of the north Australian Plate shock sequence – with Kermadec Trench – from NASA/Australia :

northern Australian Plate shock sequence with Kermadec Trench 030611

northern Australian Plate shock sequence with Kermadec Trench 030611

Australia’s Kermadec region data comes from (?) the US Geological Survey USGS National Earthquake Information Center NEIC World Data Center for Seismology in Denver / World Data Center Strain Database / WDCS-D:

030611 USGS Kermadecs quake cluster magnitude 5.5

030611 USGS Kermadecs quake cluster magnitude 5.5


– an increasingly active period here
030611-USGS-Pacific 11pm

030611 USGS Pacific 11pm

The Kermadec Trench activity impacts around the Bay of Plenty – Urewera – East Cape area, North Island NZ:

030611 NZ recent Quakes - Urewera / East Cape

030611 NZ recent Quakes - Urewera / East Cape

030611 seismograph drums - magnitude 4.4 near Whakatane

030611 seismograph drums - magnitude 4.4 near Whakatane

Urewera seismograph 040611 - magnitude 4.4 quake near Whakatane

Urewera seismograph 040611 - magnitude 4.4 quake near Whakatane

Tsunami alert in Northland a false alarm – really? Or has it picked up on something seismically significant? …

And is all this southward-trending movement of shocks building up sheer force on the Southern Alps? …

030611 Kaikoura seismograph

030611 Kaikoura seismograph

030611 Wanaka seismograph

030611 Wanaka seismograph

030611 Otago seismograph

030611 Otago seismograph

Apocalypse believers shocked after appointed hour passes 22 May 2011 “Marie Exley..’Some people were saying it was going to be an earthquake at that specific time in New Zealand and be a rolling judgment, but God is keeping us in our place and saying you may know the day but you don’t know the hour,’ she said Saturday, speaking from Bozeman, Mont. ‘The day is not over, it’s just the morning, and we have to endure until the end.’ On Sunday, a magnitude-6.1 earthquake struck near a group of South Pacific islands about 600 miles off New Zealand, but there were no reports of damage or a risk of a tsunami. The temblor struck under the Kermadec Islands, which has no permanent population…” usatoday.com/news/religion

7.3 quake strikes outer New Zealand islands 29/9/2008 “A 7.3-magnitude earthquake struck near New Zealand’s remote and largely uninhabited Kermadec Islands early Tuesday, New Zealand’s GNS Science geological agency said. New Zealand’s Ministry of Civil Defense issued no tsunami warning following the quake, while the Pacific Tsunami Warning Center said in a bulletin on its Web site that ‘no destructive widespread tsunami threat exists based on historical earthquake and tsunami data’ for the Kermadec area. Only the Kermadec’s Raoul Island is inhabited, with up to six New Zealand Department of Conservation workers living there at any time. The Hong Kong Observatory said the quake was centered about 630 miles south-southwest of Nuku’alofa, Tonga and was recorded in Hong Kong at 4:19 a.m. Tuesday, New Zealand time. The U.S. Geological Survey put the magnitude of the quake at 7.0 and said its depth was 12.5 miles.” + Strong quake near Tonga prompts tsunami warning 19/3/2009 usatoday.com/news/world

Kermadec Expedition Auckland Museum May 2011 blog & Earthquake: ground report from the Kermadecs “bubbles rising out of the sand in places around here, a sure sign of something happening underground” + Magnitude 6.1 22 May 2011 The Real Signs blog + Kermadec Mission Auckland Herald blog + Greg O’Brien: the Kermadecs “Poet, painter, writer and curator at large who was one of nine artists from the South Pacific region who travelled to the Kermadec Islands, the most remote part of New Zealand. (19′13″)” Kim Hill radionz.co.nz/sat-20110604 podcast Kermadecs “the second-most deep body of water in the world” … [meaning subduction fault-slip could generate enormous tsunami waves?] …

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