Quake Watch 2011

reply to post by muzzy


No doubt the Darfield quake aftershocks are pushing up the figures somewhat

reply to post by MoorfNZ

Yep that would be true.
Thats why you can't compare a month of one year to a month of another year

say we compared August 2010 with August 2009 then August 2009 would be way higher because of the July Dusky Sound 7.3ML (7.6Mw) aftershocks

maybe I should compare Oct 2010 (the month after Darfield) with August 2009 (the month after Dusky)

but even that might be slanted too, seeing as Dusky would be 10 days ahead of Darfield down the track (Dusky on the 15th July Darfield on the 3rd Sept ...... UTC)

Blowing a Gale here 90kmph

reply to post by muzzy


The best way of looking at quakes is a rolling 12 month figure for energy but that is a massive amount of work. When I get a chance I am going to automate some of these things. It would be great to get rolling 12 month energy figures by just clicking a button!

Bit of a Swarm going on offshore south of Gisborne/Poverty Bay, NZ

3457590, -38.90516, 177.99452, 2011/1/30 17:49:18, 27, 3.761 www.geonet.org.nz...
3457734, -38.93242, 178.05959, 2011/1/30 23:39:31, 26, 4.221 www.geonet.org.nz...
3457741, -38.93055, 177.99268, 2011/1/30 23:53:29, 27, 4.151 www.geonet.org.nz...
3457746, -38.91673, 177.99336, 2011/1/31 0:1:47, 26, 3.262 www.geonet.org.nz...
3457772, -38.91109, 178.01517, 2011/1/31 1:0:40, 28, 4.069 www.geonet.org.nz...

last one was 2 hrs ago

I probably should have said something was going to happen, yesterday. The last 2 days the number of quakes around the country dropped to very low levels, 7 on St and 8 on Sunday, a sign something ain't right

Trouble is you are never sure if its due to there being no quakes or the geonet peeps are just having a lazy weekend and hadn't bothered to put the events up on the data base

This short lull in activity has happened enough in the past to be almost a gauranteed portent of something about to snap, the closest you'll ever get to predicting significant events I think.

this might be old news but i just found out about it yesterday
www.t-a.no...

Strong earthquake off Jan Mayen
Jan Mayen / Oslo (NTB-Ole-Tommy Pedersen): An earthquake measured at 6.1 on the Richter scale struck an area off Jan Mayen Saturday morning. The quake caused no damage or tsunami warning.

The quake occurred at 7-time east of the volcanic island, the news agency said such BNO News Channel 6 News. Centre was of 9.5 km depth, which is considered shallow. According to the United States Geological Survey (USGS) is Saturday's quake of 6.1 the most powerful since 2004,but it is is not initiated tsunami warning . Station manager Erik Hanevold says to VG Nett that the jingle was awakened by violent shaking and the house Saturday morning, but that the destruction was the only things that fell down from shelves. - I have never experienced such a violent earthquake, and I'm here on the third year. We often notice a hint of an earthquake once a week, but not so powerful, "he said.

Magnitude 6.0 TONGA

Date-Time

* Monday, January 31, 2011 at 06:03:26 UTC
* Monday, January 31, 2011 at 07:03:26 PM at epicenter

Location 21.943°S, 175.510°W
Depth 68.6 km (42.6 miles)
Region TONGA
Distances

* 93 km (58 miles) SSW (198°) from NUKU'ALOFA, Tonga
* 399 km (248 miles) SSW (203°) from Neiafu, Tonga
* 2756 km (1712 miles) WSW (255°) from PAPEETE, Tahiti, French Polynesia

earthquake.usgs.gov...

What do you make of the wee swarm of quakes up nr Gisborne, Muzzy?

#

* Reference Number: 3458005
* NZDT: Mon, Jan 31 2011 11:33 pm
* Magnitude: 3.8
* Depth: 25 km
* Details: 30 km south of Gisborne [View event in Google Earth]

#

* Interactive earthquake shaking map. Report this quake. Map of New Zealand showing earthquake location.
* Reference Number: 3457772
* NZDT: Mon, Jan 31 2011 2:00 pm
* Magnitude: 4.1
* Depth: 30 km
* Details: 30 km south of Gisborne [View event in Google Earth]

#

* Interactive earthquake shaking map. Report this quake. Map of New Zealand showing earthquake location.
* Reference Number: 3457746
* NZDT: Mon, Jan 31 2011 1:01 pm
* Magnitude: 3.3
* Depth: 25 km
* Details: 30 km south of Gisborne [View event in Google Earth]

#

* Interactive earthquake shaking map. Report this quake. Map of New Zealand showing earthquake location.
* Reference Number: 3457741
* NZDT: Mon, Jan 31 2011 12:53 pm
* Magnitude: 4.2
* Depth: 25 km
* Details: 30 km south of Gisborne [View event in Google Earth]

#

* Interactive earthquake shaking map. Report this quake. Map of New Zealand showing earthquake location.
* Reference Number: 3457734
* NZDT: Mon, Jan 31 2011 12:39 pm
* Magnitude: 4.2
* Depth: 25 km
* Details: 30 km south of Gisborne [View event in Google Earth]

#

* Interactive earthquake shaking map. Report this quake. Map of New Zealand showing earthquake location.
* Reference Number: 3457590
* NZDT: Mon, Jan 31 2011 6:49 am
* Magnitude: 3.8
* Depth: 25 km
* Details: 30 km south of Gisborne


www.geonet.org.nz...

Don't know if any of you folks are still following the aftermath of the 6.0 in south eastern Iran recently. Currently, including the three or so fore-shocks, the total number of quakes is 53 and it is still rolling on.

Google Earth KMZ file of the current quakes.

That small earthquake swarm in southern Iran... check the area just northwest of the swarm:

Ancient Volcano in Iran awakening?


GPS can be off as we know with the actual locations, BUT... this ancient volcano crater looks very old.. (say, over 80,000 years). And just like Yellowstone, the plate moves, and craters follow a path (This is one way they date the eruptions, based on plate movement, etc)

These quakes could be the magma coming up again.. Very interesting stuff.

reply to post by MoorfNZ


Definitely Subduction going on.
May be related to this about Gisborne moving west, but rather in this case a release of the stress buildup in a short space of time
www.geonet.org.nz...
www.geonet.org.nz...



While things were quiet over the weekend I started a new project, Cross Sections of NZ showing the earthquake depth vs longitude relationship, in latitudial sections of 5 degrees, which shows "the angle of dip" of the Plates.
I only got as far south as Taupo/Wairoa level so far.

No new quakes on the Geonet Database for 24hrs

Not sure whats up, the graphs are showing activty e.g. www.geonet.org.nz...

The Recent Quakes page shows two new quakes,but there are no Felt Reports on them and they are not on the Search database

I've been advised that the COBRA servers are back up and running so GEE should be working - I can't check it from my current location.

further to post by muzzy


Still nothing

I sent them an e-mail " whats going on, the people want to know"

maybe they contract this out to some outfit in Cairo, Egypt and they can't do anything right now, like NZ Vodaphones call centre situation

"Thanks to the troubleshooting effort and early morning network changes of our system administrators, DHI connectivity problems appear to have been remedied. This means that you can connect to IRIS DHI using the dmc or dhiserv nameserver addresses. Thanks for your patience as we worked to sort out what was happening to the connection attempts. You should be able to resume normal use of your DHI tools."

This ended up in my junk folder. Basically GEE should be back on line.

@anmarie - sorry I banged the post in before I read the thread. I have checked and it is working OK now.

Magnitude 5.9 ALASKA PENINSULA

Date-Time

* Wednesday, February 02, 2011 at 00:38:17 UTC
* Tuesday, February 01, 2011 at 03:38:17 PM at epicenter

Location 54.979°N, 160.433°W
Depth 35 km (21.7 miles)

Region ALASKA PENINSULA
Distances

* 40 km (25 miles) S (174°) from Sand Point, AK
* 119 km (74 miles) SSW (210°) from Ivanof Bay, AK
* 121 km (75 miles) E (94°) from King Cove, AK
* 931 km (578 miles) SW (227°) from Anchorage, AK

Something I've been meaning to add here for a couple of months is a link to the Aussie Natural Hazards Map. I've been watching the site for a number of years so I'm used to the occasional small quake here.. and I do mean occasional with maybe one or two each month.

But, from midway through 2010 things started to get more active and I noted the magnitudes also slowly and steadily rising until we are seeing many quakes around the country now.

Oz EQ Map

reply to post by Tayesin

Them Geoscience Australia are a funny bunch, they never reply to queries, I've sent 2 over the last year, just basic stuff like "what type of Magnitude do you fellas use?" and :why do you blokes never upgrade or downgrade event magnitudes like the other Networks do"
Govt Dept
That map is hard to read yellow on white.
I prefer the list page myself.www.ga.gov.au...
as long as you know what WA and NSW stand for

Geonet database still down 7:27 PM

Got this reply to my query at 7 AM;

Wed, 2 February, 2011 10:22:45 AM
"Yes, there clearly appears to be a problem with locations reaching the catalogue from our earthquake hypocentre derivation application. Thank you for letting us know. We will be looking into this right away. "

Must be a major glitch

reply to post by muzzy


As of now 12:00 UTC this is all that has come in since the last one that you flagged.

Date/Time UTC,Latitude,Longitude,Magnitude,Depth(Km),Location
2011-01-31T04:01:17.082Z,-38.98662,176.20802,3.4410,94.4219,Iwitahi
2011-01-31T05:36:43.215Z,-45.11689,167.32858,3.1620,78.6855,Cavellia Head
2011-01-31T06:45:01.146Z,-39.82690,175.58698,2.8950,48.4742,Poukiore
2011-01-31T08:04:11.053Z,-38.90918,178.00148,2.7430,26.8494,Te Rerengaotukiriahi
2011-01-31T09:14:17.820Z,-38.90747,178.02167,3.1380,27.3317,Otirangi
2011-01-31T09:32:27.926Z,-43.44120,172.60057,2.9010,5.0000,Belfast
2011-01-31T10:33:36.591Z,-38.94580,178.06459,3.8380,25.2794,Pariokena
2011-01-31T10:52:20.106Z,-39.05830,174.84991,4.3690,210.7602,Tahora
2011-01-31T19:23:02.754Z,-39.65452,175.47565,2.8730,63.5575,Kakatahi
2011-02-01T03:39:14.855Z,-39.24923,173.86447,3.5880,12.4571,Tumahu
2011-02-01T07:26:17.289Z,-38.91740,178.02116,3.4260,26.6733,Otirangi

Certainly is still way behind.

Magnitude 5.2
Date-Time Wednesday, February 02, 2011 at 12:40:58 UTC
Wednesday, February 02, 2011 at 08:40:58 AM at epicenter
Time of Earthquake in other Time Zones

Location 17.342°N, 63.453°W
Depth 156.9 km (97.5 miles)
Region SAINT KITTS AND NEVIS REG., LEEWARD ISL.
Distances 50 km (30 miles) WSW of Oranjestad, Sint Eustatius, Neth. Ant.
80 km (50 miles) W of BASSETERRE, St. Kitts and Nevis
310 km (195 miles) ESE of SAN JUAN, Puerto Rico
825 km (510 miles) NE of WILLEMSTAD, Curacao, Neth. Antilles

Location Uncertainty horizontal +/- 4.5 km (2.8 miles); depth +/- 2.4 km (1.5 miles)
Parameters NST=201, Nph=201, Dmin=38.1 km, Rmss=0.73 sec, Gp= 58°,
M-type=body wave magnitude (Mb), Version=7
Source USGS NEIC (WDCS-D)


Event ID usb0001829